CN118042562A - Wake-up signal processing method and device and network equipment - Google Patents
Wake-up signal processing method and device and network equipment Download PDFInfo
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- H04W52/02—Power saving arrangements
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Abstract
The application discloses a wake-up signal processing method and device and network equipment, and relates to the technical field of communication; the method comprises the following steps: and processing the first sequence, and outputting a second sequence, wherein the sequence length of the second sequence is greater than that of the first sequence. Because the sequence length of the wake-up signal is shorter, the transmission process of the wake-up signal can not ensure the inter-cell interference randomization under the condition of more cell identifications, so the application increases the sequence length of the first sequence through processing, namely increases the bit number of the first sequence, and realizes the processing of the wake-up signal so as to reduce the relativity/relativity between the first sequences as much as possible and ensure the inter-cell interference randomization.
Description
Technical Field
The present application relates to the field of communications technologies, and in particular, to a wake-up signal processing method and apparatus, and a network device.
Background
In order to reduce the power consumption of the terminal device, a low power wake-up signal (LP-WUS) mechanism may be introduced.
In some scenarios or moments, the terminal device may simply turn on a low power wake-up SIGNAL RECEIVER receiver (LP-WUS receiver, LP-WUR or LR) independent of the Main Radio (MR). Therefore, the terminal equipment can not only turn off the main radio to achieve the purpose of saving energy (reducing power consumption), but also monitor the low-power consumption wake-up signal through the low-power consumption wake-up signal receiver to wait to be woken up by the network, thereby achieving the purpose of network accessibility. The signal receiver is awakened through the main radio and low power consumption, and the purposes of energy saving and network accessibility are simultaneously achieved.
Communication procedures in communication systems often require consideration of inter-cell interference (inter-CELL INTERFERENCE), and inter-cell interference randomization is highly advantageous for communication systems. For the purpose of inter-cell interference randomization, it is generally necessary to ensure that the sequences (channels/signals) to be transmitted have a longer sequence length (e.g., a larger number of bits in the sequence), and that the longer the sequence length, the lower the correlation between the sequences (channels/signals), so that inter-cell interference randomization is ensured as much as possible by reducing the correlation.
However, since the sequence length of the wake-up signal is shorter (e.g. the number of bits carried by the sequence of the wake-up signal is smaller), in the case of more cell identities (cell IDs), the transmission process of the wake-up signal may not guarantee inter-cell interference randomization, so how to optimize the sequence of the wake-up signal to guarantee inter-cell interference randomization needs further research.
Disclosure of Invention
The application provides a wake-up signal processing method, a wake-up signal processing device and network equipment, which aim to solve the problem of how to optimize a wake-up signal sequence so as to ensure inter-cell interference randomization.
In a first aspect, the present application is a wake-up signal processing method, including:
The first sequence is processed and the second sequence is output.
Therefore, the application increases the sequence length of the first sequences, namely increases the bit number of the first sequences, and realizes the processing of the wake-up signals so as to reduce the correlation/association among the first sequences as much as possible and ensure the randomization of the inter-cell interference.
In a second aspect, the application is a wake-up signal processing method, including:
Modulating the first sequence and outputting an eighth sequence;
And pre-encoding the eighth sequence and outputting a ninth sequence.
It can be seen that the present application converts the first sequence into "time domain" symbols or modulation symbols by modulation, then converts the "time domain" symbols or modulation symbols into "frequency domain" symbols by precoding, and maps onto subcarriers for frequency division multiplexing with other OFDM-based signals/channels. Meanwhile, the sequence length of the first sequences is increased through modulation and/or precoding, namely the bit number of the first sequences is increased, so that the wake-up signals are processed, the correlation/association among the first sequences is reduced as much as possible, and the inter-cell interference randomization is ensured.
In a third aspect, the present application is a wake-up signal processing method, including:
The first sequence is subjected to a first process, and an eleventh sequence is output.
Therefore, the application increases the sequence length of the first sequence through the first processing, namely increases the bit number of the first sequence, and realizes the processing of the wake-up signal so as to reduce the relativity/relevance among the first sequences as much as possible and ensure the randomization of the inter-cell interference.
A fourth aspect is a wake-up signal processing apparatus of the present application, including:
and the processing unit is used for processing the first sequence and outputting a second sequence.
A fifth aspect is a wake-up signal processing apparatus of the present application, including:
A processing unit for modulating the first sequence and outputting an eighth sequence; and pre-encoding the eighth sequence to output a ninth sequence.
A sixth aspect is a wake-up signal processing apparatus of the present application, including:
and the processing unit is used for performing first processing on the first sequence and outputting an eleventh sequence.
A seventh aspect, the steps in the method as set forth in the first aspect, the second aspect or the third aspect are applied in a network device.
An eighth aspect is a network device according to the present application, comprising a processor, a memory and a computer program or instructions stored on the memory, wherein the processor executes the computer program or instructions to implement the steps in the method designed in the first aspect.
A ninth aspect is a chip of the present application, which includes a processor and a communication interface, where the processor performs the steps in the method designed in the first aspect, the second aspect or the third aspect.
A tenth aspect is a chip module of the present application, including a transceiver component and a chip, where the chip includes a processor, and the processor executes the steps in the method designed in the first aspect, the second aspect, or the third aspect.
An eleventh aspect is a computer readable storage medium of the present application, in which a computer program or instructions are stored, which when executed, implement the steps in the method devised in the first, second or third aspects above. For example, the computer program or instructions are executed by a processor.
A twelfth aspect is a computer program product according to the application, comprising a computer program or instructions which, when executed, implement the steps of the method according to the first, second or third aspects. For example, the computer program or instructions are executed by a processor.
The technical effects of the second aspect to the twelfth aspect may be referred to as the technical effects of the first aspect, the second aspect, or the third aspect, and are not described herein.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings used in the description of the embodiments or the prior art will be briefly described below.
FIG. 1 is a schematic diagram of a communication system architecture according to an embodiment of the present application;
FIG. 2 is a flow chart of a wake-up signal processing method according to an embodiment of the present application;
FIG. 3 is a flow chart of a wake-up signal processing method according to an embodiment of the present application;
FIG. 4 is a flow chart of a wake-up signal processing method according to an embodiment of the present application;
FIG. 5 is a block diagram showing functional units of a wake-up signal processing apparatus according to an embodiment of the present application;
FIG. 6 is a block diagram showing the functional units of a wake-up signal processing apparatus according to another embodiment of the present application;
FIG. 7 is a block diagram showing the functional units of a wake-up signal processing apparatus according to another embodiment of the present application;
fig. 8 is a schematic structural diagram of a network device according to an embodiment of the present application;
fig. 9 is a schematic structural diagram of still another network device according to an embodiment of the present application;
Fig. 10 is a schematic structural diagram of still another network device according to an embodiment of the present application.
Detailed Description
It should be understood that the terms "first," "second," and the like, as used in embodiments of the present application, are used for distinguishing between different objects and not for describing a particular sequential order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, software, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus.
Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.
In the embodiment of the application, "and/or" describes the association relation of the association objects, which means that three relations can exist. For example, a and/or B may represent three cases: a alone; both A and B are present; b alone. Wherein A, B may be singular or plural.
In the embodiment of the present application, the symbol "/" may indicate that the associated object is an or relationship. In addition, the symbol "/" may also denote a divisor, i.e. performing a division operation. For example, A/B may represent A divided by B.
"At least one" or the like in the embodiments of the present application means any combination of these items, including any combination of single item(s) or plural items(s), meaning one or more, and plural means two or more. For example, at least one (one) of a, b or c may represent the following seven cases: a, b, c, a and b, a and c, b and c, a, b and c. Wherein each of a, b, c may be an element or a set comprising one or more elements.
The 'equal' in the embodiment of the application can be used with the greater than the adopted technical scheme, can also be used with the lesser than the adopted technical scheme. When the combination is equal to or greater than the combination, the combination is not less than the combination; when the value is equal to or smaller than that used together, the value is not larger than that used together.
"Of", "corresponding (corresponding/relevant)", "corresponding (corresponding)", and "indicated (indicated)" referred to in the embodiments of the present application may be sometimes used in combination. It should be noted that the meaning of what is meant is consistent when de-emphasizing the differences.
The "connection" in the embodiments of the present application refers to various connection modes such as direct connection or indirect connection, so as to implement communication between devices, which is not limited in any way.
The "network" in the embodiment of the present application may be expressed as the same concept as the "system", i.e. the communication system is a communication network.
The following describes related content, concepts, meanings, technical problems, technical schemes, beneficial effects and the like related to the embodiment of the application.
1. Communication system, terminal device and network device
1. Communication system
The technical scheme of the embodiment of the application can be applied to various communication systems, such as: general Packet Radio Service (GPRS), long term evolution (Long Term Evolution, LTE) system, long term evolution advanced (Advanced Long Term Evolution, LTE-a) system, new Radio (NR) system, evolved system of NR system, LTE-based Access to Unlicensed Spectrum on unlicensed spectrum (LTE-U) system, NR-based Access to Unlicensed Spectrum on unlicensed spectrum (NR-U) system, non-terrestrial communication network (Non-TERRESTRIAL NETWORKS, NTN) system, universal mobile communication system (Universal Mobile Telecommunication System, UMTS), wireless local area network (Wireless Local Area Networks, WLAN), wireless fidelity (WIRELESS FIDELITY, wi-Fi), 6th Generation (6 th-Generation, 6G) communication system, or other communication system, etc.
It should be noted that, the number of connections supported by the conventional communication system is limited and easy to implement. However, with the development of communication technology, the communication system may support not only a conventional communication system, but also, for example, a device-to-device (D2D) communication, a machine-to-machine (machine to machine, M2M) communication, a machine type communication (MACHINE TYPE communication, MTC), an inter-vehicle (vehicle to vehicle, V2V) communication, an internet of vehicles (vehicle to everything, V2X) communication, a narrowband internet of things (narrow band internet of things, NB-IoT) communication, and the like, so the technical scheme of the embodiment of the present application may be applied to the above communication system.
In addition, the technical scheme of the embodiment of the application can be applied to beamforming (beamforming), carrier aggregation (carrier aggregation, CA), dual-connection (dual connectivity, DC) or independent (standalone, SA) deployment scenarios and the like.
In the embodiment of the present application, the frequency spectrum used for communication between the terminal device and the network device, or the frequency spectrum used for communication between the terminal device and the terminal device may be an authorized frequency spectrum or an unauthorized frequency spectrum, which is not limited. In addition, unlicensed spectrum may be understood as shared spectrum, and licensed spectrum may be understood as unshared spectrum.
Since the embodiments of the present application are described in connection with terminal devices and network devices, the terminal devices and network devices involved will be specifically described below.
2. Terminal equipment
The terminal device may be a device having a transceiving function, and may also be referred to as a terminal, a User Equipment (UE), a remote terminal device (remote UE), a relay UE, an access terminal device, a subscriber unit, a subscriber station, a mobile station, a remote station, a mobile device, a user terminal device, an intelligent terminal device, a wireless communication device, a user agent, or a user equipment. The relay device is a terminal device capable of providing a relay service to other terminal devices (including a remote terminal device).
For example, the terminal device may be a mobile phone (mobile phone), a tablet (Pad), a computer with wireless transceiving function, a Virtual Reality (VR) terminal device, an augmented reality (augmented reality, AR) terminal device, a wireless terminal device in industrial control (industrial control), a wireless terminal device in unmanned automatic driving, a wireless terminal device in remote medical (remote medical), a wireless terminal device in smart grid (SMART GRID), a wireless terminal device in transportation security (transportation safety), a wireless terminal device in smart city (SMART CITY) or a wireless terminal device in smart home (smart home), or the like.
As another example, the terminal device may also be a cellular phone, a cordless phone, a session initiation protocol (session initiation protocol, SIP) phone, a wireless local loop (wireless local loop, WLL) station, a personal digital assistant (personal DIGITAL ASSISTANT, PDA), a handheld device with wireless communication functionality, a computing device or other processing device connected to a wireless modem, a car-mounted device, a wearable device, a terminal device in a next generation communication system (e.g. NR communication system, 6G communication system) or a terminal device in a future evolved public land mobile communication network (public land mobile network, PLMN), etc., without being limited in particular.
In some possible implementations, the terminal device may be deployed on land, including indoors or outdoors, hand-held, wearable, or vehicle-mounted; can be deployed on the water surface (such as ships, etc.); may be deployed in the air (e.g., aircraft, balloons, satellites, etc.).
In some possible implementations, the terminal device may include means for wireless communication functions, such as a chip system, a chip module. By way of example, the system-on-chip may include a chip, and may include other discrete devices.
3. Network equipment
The network device may be a device with a transceiver function, and is configured to communicate with the terminal device.
In some possible implementations, the network device may be responsible for air-side radio resource management (radio resource management, RRM), quality of service (quality of service, qoS) management, data compression and encryption, data transceiving, and so on.
In some possible implementations, the network device may be a Base Station (BS) in a communication system or a device deployed in a radio access network (radio access network, RAN) for providing wireless communication functions.
For example, the network device may be an evolved node B (evolutional node B, eNB or eNodeB) in the LTE communication system, a next generation evolved node B (next generation evolved node B, ng-eNB) in the NR communication system, a next generation node B (next generation node B, gNB) in the NR communication system, a Master Node (MN) in the dual connectivity architecture, a second node or Secondary Node (SN) in the dual connectivity architecture, or the like, without particular limitation.
In some possible implementations, the network device may also be a device in a Core Network (CN), such as an access and mobility management function (ACCESS AND mobility management function, AMF), a user plane function (user plane function, UPF), etc.; but also Access Points (APs) in WLAN, relay stations, communication devices in future evolved PLMN networks, communication devices in NTN networks, etc.
In some possible implementations, the network device may include a device, such as a system-on-chip, a chip module, having means to provide wireless communication functionality for the terminal device. The chip system may include a chip, or may include other discrete devices, for example.
In some possible implementations, the network device may communicate with an internet protocol (Internet Protocol, IP) network. Such as the internet, a private IP network or other data network, etc.
In some possible implementations, the network device may be one independent node to implement the functionality of the base station or the network device may include two or more independent nodes to implement the functionality of the base station. For example, network devices include centralized units (centralized unit, CUs) and Distributed Units (DUs), such as gNB-CUs and gNB-DUs. Further, in other embodiments of the present application, the network device may further include an active antenna unit (ACTIVE ANTENNA unit, AAU). Wherein a CU implements a portion of the functions of the network device and a DU implements another portion of the functions of the network device. For example, a CU is responsible for handling non-real-time protocols and services, implementing the functions of a radio resource control (radio resource control, RRC) layer, a service data adaptation (SERVICE DATA adaptation protocol, SDAP) layer, and a packet data convergence (PACKET DATA convergence protocol, PDCP) layer. The DUs are responsible for handling physical layer protocols and real-time services, implementing the functions of the radio link control (radio link control, RLC), medium access control (medium access control, MAC) and Physical (PHY) layers. In addition, the AAU can realize partial physical layer processing function, radio frequency processing and related functions of the active antenna. Since the information of the RRC layer may eventually become or be converted from the information of the PHY layer, in this network deployment, higher layer signaling (e.g., RRC signaling) may be considered to be generated by the CU, transmitted by the DU, or transmitted by both the DU and the AAU. It is understood that the network device may include at least one of CU, DU, AAU. In addition, the CU may be divided into network devices in the RAN, or may be divided into network devices in the core network, which is not particularly limited.
In some possible implementations, the network device may be any one of multiple sites that performs coherent cooperative transmission (coherent joint transmission, CJT) with the terminal device, or other sites outside the multiple sites, or other network devices that perform network communication with the terminal device, which is not particularly limited. The multi-station coherent cooperative transmission may be a joint coherent transmission of multiple stations, or different data belonging to the same physical downlink shared channel (Physical Downlink SHARED CHANNEL, PDSCH) are sent from different stations to the terminal device, or multiple stations are virtualized into one station for transmission, and names with the same meaning specified in other standards are also applicable to the present application, i.e. the present application is not limited by the names of these parameters. Stations in the multi-station coherent cooperative transmission may be remote radio heads (Remote Radio Head, RRH), transmission receiving points (transmission and reception point, TRP), network devices, and the like, which are not particularly limited.
In some possible implementations, the network device may be any one of multiple sites that perform incoherent cooperative transmission with the terminal device, or other sites outside the multiple sites, or other network devices that perform network communication with the terminal device, which is not limited specifically. The multi-station incoherent cooperative transmission may be a multi-station joint incoherent transmission, or different data belonging to the same PDSCH are sent from different stations to the terminal device, and names with the same meaning specified in other standards are also applicable to the present application, i.e. the present application is not limited to the names of these parameters. The stations in the multi-station incoherent cooperative transmission may be RRHs, TRPs, network devices, etc., which are not particularly limited.
In some possible implementations, the network device may have a mobile nature, e.g., the network device may be a mobile device. Alternatively, the network device may be a satellite, a balloon station. For example, the satellite may be a Low Earth Orbit (LEO) satellite, a medium earth orbit (medium earth orbit, MEO) satellite, a geosynchronous orbit (geostationary earth orbit, GEO) satellite, a high elliptical orbit (HIGH ELLIPTICAL orbit, HEO) satellite, or the like. Alternatively, the network device may be a base station disposed on land, in a water area, or the like.
In some possible implementations, the network device may serve a cell, and terminal devices in the cell may communicate with the network device over transmission resources (e.g., spectrum resources). The cell may be a macro cell (macro cell), a small cell (SMALL CELL), a urban cell (metro cell), a micro cell (micro cell), a pico cell (pico cell), a femto cell (femto cell), or the like.
4. Description of the examples
An exemplary description of a communication system according to an embodiment of the present application is provided below.
Exemplary, a network architecture of a communication system according to an embodiment of the present application may refer to fig. 1. As shown in fig. 1, communication system 10 may include a network device 110, a terminal device 120.
Fig. 1 is merely an illustration of a network architecture of a communication system, and the network architecture of the communication system according to the embodiment of the present application is not limited thereto. For example, a server or other device may also be included in communication system 10. As another example, multiple network devices and/or multiple terminal devices may be included in communication system 10.
2. Main radio
It should be noted that the main radio, which may also be referred to as a main transceiver (MAIN TRANCEIVER), an overall transceiver (overall tranceiver), or a conventional transceiver (regular tranceiver), has a complete radio frequency and baseband processing architecture. The primary radio may be seen as a module or the like for transceiving 5G NR signals/channels in addition to low power wake-up signals.
1. Paging (paging) related physical downlink control channel (physical downlink control channel, PDCCH)
In general, in a radio resource control idle state (rrc_ IDLE STATE) or a radio resource control inactive state (rrc_ INACTIVE STATE), a terminal device needs to monitor a paging-related PDCCH, also called a type2-PDCCH (type 2-PDCCH). The radio network temporary identity (radio network tempory identity, RNTI) of the paging-related PDCCH is a P-RNTI, and the downlink control information (downlink control information, DCI) format (format) used is DCI format 1-0.
After the terminal device detects the paging related PDCCH (the descrambling CRC with the P-RNTI is successful), the terminal device may parse the DCI. The DCI may include a short message (short message) to enable the terminal device to obtain alarm information or perform system information update. In addition, the DCI may also include scheduling information to enable the terminal device to receive a paging-related physical downlink shared channel (physical downlink SHARE CHANNEL, PDSCH) to acquire a paging message and further initiate a random access procedure into a CONNECTED state (rrc_connected state).
The paging message functions as follows:
(1) Sending a call request to a terminal device in an RRC_IDLE state;
(2) Notifying the terminal device in the rrc_idle state, the rrc_inactive state, or the rrc_connected state that system information has changed;
(3) Instructing the terminal device to start receiving a primary notification and/or an auxiliary notification of an ETWS (secondary) of an earthquake and tsunami warning system (Earthquake and Tsunami WARNING SYSTEM, ETWS); the terminal device is instructed to begin receiving commercial mobile pre-warning system (Commercial Mobile ALERT SYSTEM, CMAS) notifications.
In addition, the terminal device needs to complete time-frequency synchronization using a reference signal (e.g., SSB) and complete adjustment of automatic gain control (Automatic Gain Control, AGC) before acquiring the paging message.
The listening occasion of the paging related PDCCH may be configured by a set of search spaces (SEARCH SPACE SET, SSS).
A terminal device in an rrc_idle state or an rrc_inactive state may receive a paging message using a discontinuous reception (Discontinuous Reception, DRX) mechanism to reduce power consumption. One DRX cycle may contain at least one paging frame (PAGING FRAME, PF).
Wherein a PF may be a radio frame (radio frame) or a system frame (SYSTEM FRAME) that may contain one or more Paging Occasions (POs) or a PO start point.
Wherein the PO may be used to determine a start of a listening occasion within the PF, may represent a time domain position of a paging related PDCCH, may be used to transmit paging downlink control information (paging downlink control information, PAGING DCI), may be comprised of multiple subframes, multiple slots, or multiple OFDM symbols, may be comprised of a plurality of listening occasions of the paging related PDCCH. The listening occasion of the paging related PDCCH may also be referred to as a paging PDCCH listening occasion (PAGING PDCCH monitoring occasion, PMO). Thus, a PO may comprise a plurality of PMOs, or a PO may consist of a set of PMOs.
Where PMO is a number of listening occasions in sequence starting from the starting point, PMO is one-to-one associated with the truly transmitted SSB.
The terminal device may determine the location of the PF or PO to which the terminal device itself belongs according to its device identifier (ue_id).
In the embodiment of the present application, the PO may be understood as a paging occasion, or may be understood as a terminal group (UE subgroup) corresponding to the PO or a terminal group (UE group) corresponding to the PO. The terminal subset (terminal group) corresponding to the PO is understood as a set of terminals corresponding to/mapping/associating the same PO. Wherein one PO may correspond to one terminal sub-group (terminal group), which is not particularly limited.
2. Radio resource management (Radio Resource Management, RRM) measurements (measurement)
In the rrc_idle state or the rrc_inactive state, the terminal device also needs to perform periodic RRM measurements. Among other things, RRM measurements may include serving cell (SERVING CELL) measurements and neighbor cell (neighboring cell) measurements.
Neighbor cell (neighboring cell) measurements may include:
The network equipment gives a frequency point, and the terminal equipment can search and measure cells on the frequency point; or alternatively
The network device gives a frequency point and a physical cell identifier (PHYSICAL CELL ID, PCI), and the terminal device can use the PCI to search and measure cells on the frequency point; or alternatively
The network device does not give frequency point nor PCI, and the terminal device can search and measure the cell autonomously.
Neighbor cell measurements can be further divided into intra-frequency (intra-frequency) measurements and inter-frequency (inter-frequency) measurements.
For example, the SSB in the measurement object of the neighbor cell is the same as the center frequency point and subcarrier spacing of the SSB of the serving cell, and then the measurement is the same-frequency measurement.
For example, the SSB in the measurement object of the neighbor cell is different from the center frequency point or subcarrier spacing of the SSB of the serving cell, and the measurement is an inter-frequency measurement.
In the rrc_idle state or the rrc_inactive state, the terminal device generally needs to perform RRM measurement of the serving cell once in one paging cycle (PAGING CYCLE). The paging cycle is also referred to as a DRX cycle, or an idle-DRX (IDLE STATE DRX) cycle.
Therefore, in the rrc_idle state or the rrc_inactive state, it is a primary task of the terminal device to monitor the PDCCH related to paging and to perform RRM measurement.
3. Paging advance indication information (PAGING EARLY indication, PEI)
In order to monitor the PDCCH related to paging and perform RRM measurement, generally, the network device needs to wake up the paging terminal device from deep sleep (DEEP SLEEP) to process 3 synchronization signal block bursts (SSB bursts) in advance, achieve a certain time-frequency synchronization to monitor the PDCCH related to paging, and perform RRM measurement at the same time.
In order to avoid unnecessary interception during the process of monitoring the paging related PDCCH so as to save the power consumption of the terminal device, in the rrc_idle state or the rrc_inactive state, the network device may configure PEI, which may be used to indicate whether the terminal device needs to continue to monitor the paging related PDCCH, so as to achieve the purpose of saving the power consumption. The PEI may be downlink control information or a sequence, etc.
When configured with PEI, the terminal device may wake up from deep sleep to process 1 SSB burst in order to reach a certain time-frequency synchronization to detect PEI.
If PEI indicates a monitoring opportunity to continue monitoring the paging related PDCCH, the terminal device continues to process the remaining 2 SSB bursts and continues to monitor the paging related PDCCH.
If the PEI indicates that there is no need to continue listening to the paging related PDCCH for a listening occasion, the terminal device transitions back to deep sleep.
At a group paging rate (group PAGING RATE) of 10%, the probability that the terminal device needs to monitor the paging-related PDCCH is 10%. Therefore, at 10% probability, the terminal device needs to process 3 SSB bursts, monitor the PDCCH related to paging, and make RRM measurements. At 90% chance, the terminal device only needs to process 1 SSB burst and make RRM measurements. Thus, at 90% chance, the terminal device processes fewer signals/channels, wakes up for a shorter time (if no signals/channels are processed after waking up from deep sleep, then it is in light sleep (LIGHT SLEEP)), and power consumption is less.
In summary, by using PEI, the terminal device can achieve the purpose of power saving.
3. Low power consumption wake-up signal and low power consumption wake-up signal receiver
The low power wake-up signal receiver may also be referred to as a low power receiver, a wake-up signal receiver (WUS receiver), or the like. The low power wake-up signal receiver may be seen as a module or the like mainly for receiving signals/channels related to the low power wake-up signal. 1. Low power wake-up signal (LP-WUS)
The network device may wake the terminal device out of a deep sleep state, such as a power save mode (power saving mode, PSM), by sending a low power wake-up signal. Accordingly, the terminal device determines whether it is necessary to exit the deep sleep state to enter the rrc_idle state, the rrc_inactive state, or the rrc_connected state by listening/detecting a low power wake-up signal. In this way, the terminal device can enter a deep sleep state while being awakened by the network.
For simplicity of description, the low power wake-up signal may also be referred to herein simply as wake-up signal (WUS). That is, the "low power consumption wake-up signal" mentioned in the present application may be collectively referred to as "wake-up signal".
2. Low power consumption wake-up signal receiver
In some scenarios, the terminal device may simply turn on the low power wake-up signal receiver independent of the primary radio. Therefore, the terminal equipment can not only turn off the main radio to achieve the purpose of saving energy (reducing power consumption), but also monitor the low-power consumption wake-up signal through the low-power consumption wake-up signal receiver to wait to be woken up by the network, thereby achieving the purpose of network accessibility. The signal receiver is awakened through the main radio and low power consumption, and the purposes of energy saving and network accessibility are simultaneously achieved. In some scenarios, the low-power wake-up signal receiver may monitor the low-power wake-up signal according to a denser frequency, so that the terminal device is awakened with a lower time delay, and thus the low-power wake-up signal receiver also potentially has the benefit of reducing the time delay.
For simplicity of description, the low power wake-up signal receiver may also be referred to herein simply as a low power receiver (low power receiver, LPR). That is, the "low power consumption wake-up signal receiver" mentioned in the present application may be collectively referred to simply as "low power consumption receiver".
3. Receiving method of low-power consumption receiver
In the embodiment of the application, the low-power consumption receiver can have the following two receiving methods:
First class receiving method
The first type of receiving method may be that the low power consumption receiver periodically detects a wake-up signal.
In this method, the power consumption of detecting the wake-up signal once is large, but the average power consumption is low due to the long period (the low power consumption receiver only needs to wake up once every long period to detect). Since it is necessary to wake up periodically for detection, a low power receiver requires accurate time synchronization.
In addition, under this method, the low power consumption receiver generates a deviation (erro) in timing (timing) due to frequency drift (frequency drift). When the period is too large, the accumulated timing deviation will be too large; when the timing deviation exceeds a certain degree (such as exceeds a fraction or one modulation symbol), the demodulation decoding performance is drastically reduced, which is represented by a large miss rate (miss detection rate, MDR) and/or false alarm rate (FALSE ALARM RATE, FAR).
Second class receiving method
The second type of receiving method may be that the low power consumption receiver may be in a state of detecting a wake-up signal (also referred to as a stand-by state) all the time.
In this way, the power consumption for detecting the wake-up signal once is low, and the average power consumption is low although the detection is always performed. Low power receivers do not require very accurate time synchronization because of the constant detection.
Under this approach, when the network device does not transmit a wake-up signal for a long time, the accumulated timing offset will also be excessive. When the timing deviation exceeds a certain degree (for example, exceeds a fraction or one modulation symbol), although the low power consumption receiver may assume that a plurality of time points are detected as the starting points of the wake-up signals (demodulation decoding is performed if the wake-up signals are channels, and sequence correlation operation is performed if the wake-up signals are signals), the influence of the timing deviation may be reduced, but if the network device is not synchronized for a long time, the time interval between the transmission of the wake-up signals by the network device and the detection of the wake-up signals by the low power consumption receiver is too large, resulting in too large delay.
Thus, the wake-up signal may also comprise a synchronization signal for low power consumption reception synchronization (at least correcting timing deviations, for envelope detection). The synchronization signal may not employ OOK modulation. The synchronization signal may be transmitted in the form of a frequency domain sequence. Since the frequency domain sequence behaves in the time domain as a filtered time domain sequence receiver may employ a time domain correlation approach (i.e., the received time domain signal is correlated with a time domain version of the local sequence or portion of the sequence). In practice, the time domain correlation approach is equivalent to the frequency domain point multiplication approach (i.e., the received frequency domain signal is point multiplied with a frequency domain version of the local sequence or portion of the sequence).
4. Architecture for low power consumption receiver
In the embodiment of the application, the low-power consumption receiver can have the following three architectures:
The first architecture is an envelope detection (envelop detection) architecture based on zero intermediate frequency (zero IF), which can be done in baseband.
The second architecture is a low IF (low IF) based envelope detection architecture, which can be done in the IF.
A third architecture is an rf-based envelope detection architecture, which can be implemented in rf.
Both of the above three architectures can implement the two types of receiver modes described above.
5. Modulation of wake-up signals (modulation)
In the embodiment of the application, in order to reduce the complexity of the low-power consumption receiver, the wake-up signal can be modulated by on-off keying (OOK).
This is because OOK modulation has only amplitude information, and no frequency or phase information, and the amplitude has only two amplitudes, high and low (or zero). For OOK, the receiving method may be envelope detection (envelope detection) which directly accumulates the amplitude of the received signal, which requires less power consumption due to its simplicity. In this way, the low power consumption receiver in the terminal device can be reduced to detect the energy of the modulation symbol (instead of the amplitude/phase of the modulation symbol), and can be determined to be on (on) as long as the energy of the modulation symbol is detected to exceed a certain threshold, and off (off) otherwise.
In addition, since the processing is performed at radio frequency or intermediate frequency, an envelope detection manner can be adopted.
6. Waveform of wake-up signal
The wake-up signal may be a single tone (single tone) waveform or a single carrier (SINGLE CARRIER) waveform, or a multi-tone (multi tone) waveform or a multi carrier (multi carrier) waveform.
For OOK in a single tone waveform or a single carrier waveform, an OOK modulation symbol may be a single tone or single carrier time domain symbol.
For OOK in a multi-tone or multi-carrier waveform, an OOK modulation symbol may be a multi-tone or multi-carrier time domain symbol, such as an orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplexing, OFDM) time domain symbol.
For OOK under a multitone or multi-carrier waveform, at a transmitting end (such as a network device), the values of a plurality of subcarriers of one modulation symbol may be random or preset.
In order to map multiple OOK modulation symbols to one OFDM symbol, waveform shaping (shaping) is often required, such as re-mapping OOK modulation symbol sequences into corresponding subcarriers through precoding (e.g., DFT precoding, quasi-inverse based precoding). This has the further advantage that one OFDM symbol has both OOK modulation symbols for low power wake-up signals and modulation symbols for other signal channels.
For OOK under a multitone or multi-carrier waveform, at a receiving end (such as a low-power receiver in a terminal device), one way is envelope detection, which has lower complexity, lower power consumption at the receiving end, but poorer detection performance; another way is sequence detection, in which the OOK sequence is detected by correlating the received sequence with the local sequence, where the detection performance is better, but the complexity is higher, the power consumption at the receiving end is higher, and the number of bits carried in the sequence is generally smaller.
4. Optimized processing of sequences of wake-up signals
1. Description of the invention
Inter-cell interference randomization is very advantageous for the communication process in a communication system, and for the purpose of inter-cell interference randomization, it is generally necessary to ensure that sequences (channels/signals) to be transmitted have a longer sequence length in order to reduce correlation/association between the respective sequences (channels/signals).
However, since the sequence length of the wake-up signal is shorter, under the condition that the cell identifier (cell ID) is more, the inter-cell interference randomization may not be ensured by the wake-up signal, so that the embodiment of the application considers the optimization processing of the sequence of the wake-up signal, and increases the sequence length of the wake-up signal or the data length of the wake-up signal by the optimization processing, so as to reduce the correlation/association between the wake-up signals as much as possible and ensure the inter-cell interference randomization.
2. Sequence of wake-up signals
It should be noted that, for understanding the sequence of the wake-up signal, the wake-up signal may be represented by a sequence at a higher layer (such as an RRC layer or a MAC layer) or a physical layer, and the sequence may represent a bit sequence or a combination of bits (bits), so that the sequence may be processed (such as channel coding, bit level processing, etc.) accordingly.
For a bit sequence, the bit sequence may be composed of a plurality of bits, so that embodiments of the present application may process the bits accordingly.
In addition, since each bit in the bit sequence may be arranged in order from low to high, a plurality of most significant bits and a plurality of least significant bits may be included in all bits of the bit sequence.
For example, a bit sequence consists of 8 bits, the 8 bits being "hgfedcba". Where 'a' is the 0 th bit, "b" is the 1 st bit, "c" is the 2 nd bit, …, and "h" is the 7 th bit.
For a plurality of least significant bits, bit 0 (i.e., "a") can be considered to be the 1 least significant bit; bit 0 and bit 1 (i.e., "ba") can be regarded as the 2 least significant bits; bit 0, bit 1 and bit 2 (i.e. "cba") can be considered the 3 least significant bits, and so on.
For a plurality of the most significant bits, the 7 th bit (i.e., "h") can be considered as the 1 most significant bit; bits 7 and 6 (i.e., "hg") may be considered the 2 most significant bits; the 7 th bit, 6 th bit, and 5 th bit (i.e., "hgf") can be considered the 3 most significant bits, and so on.
3. Detailed description of the preferred embodiments
The following examples of the application will illustrate from various embodiments how to optimize the sequence of wake-up signals. Any combination of the embodiments may be used to form a new embodiment, and the new embodiment is also within the scope of the present application, which is not described herein.
Embodiment 1:
① Description of the invention
In "embodiment 1", the embodiment of the present application needs to increase the sequence length, i.e., increase the number of bits of the sequence.
For convenience of description and distinction, the embodiment of the present application introduces a first sequence and a second sequence, and outputs the second sequence by processing the first sequence. Wherein the sequence length (i.e., number of bits) of the second sequence is greater than the sequence length (i.e., number of bits) of the first sequence.
In particular, the processing may include repetition, upsampling, or bit stuffing, among others.
It should be noted that, repeating or upsampling, it is understood that the original bits of the first sequence are used to perform repeated padding or upsampling of the bits, so as to increase the number of bits of the first sequence, thereby outputting/obtaining the second sequence.
For example, if the first sequence includes 32 bits, the transmitter of the network device may repeat or upsample the 32 bits, which is to fill the 32 bits 36 times repeatedly, resulting in 1152 bits.
The padding bits may be repeated multiple times by using original bits of the first sequence, or repeated multiple times by using preset bits (e.g., null bits), etc., so as to increase the number of bits of the first sequence, thereby outputting/obtaining the second sequence.
In this way, the sequence length of the first sequences is increased by processing, that is, the number of bits of the first sequences is increased, so as to reduce the correlation between the first sequences as much as possible, and ensure inter-cell interference randomization.
② First sequence
In some possible implementations, the first sequence may represent a sequence of wake-up signals, may be a coded bit sequence of wake-up signals, such as a coded codeword (coded), or the like. Correspondingly, the second sequence may be a bit sequence after processing (e.g., repetition or upsampling) the first sequence.
For example, the transmitter of the network device may encode a portion of the UE ID having 16 bits in the wake-up signal to obtain a bit sequence (i.e., a first sequence) having 32 bits.
Also for example, the first sequence q is a bit sequenceAnd/>Is the total number of bits in the first sequence q. After processing (e.g., repeating or upsampling) the first sequence q, a second sequence is output as a bit sequence
Specifically, the Coding may be Channel Coding (Channel Coding), cyclic redundancy check (Cyclic Redundant Check, CRC) adding, channel Coding, CRC adding, code block segmentation (Code Block Segmentation) and code block CRC adding, channel Coding, rate adaptation (RATE MATCHING), and code block connection (Code Block Concatenation). The channel coding may be a forward error correction coding (Forward Error Correcting Coding).
③ Carrying a first sequence within one or more OFDM symbols
In some possible implementations, the first sequence may be carried within one or more OFDM symbols.
It should be noted that, since the sequence length of the wake-up signal is shorter, and the sequence length of the first sequence obtained by encoding the sequence of the wake-up signal may still be shorter, this may result in that the number of bits to be carried may be much smaller than the number of bits that can be carried by the number of subcarriers allocated in one or more OFDM symbols, so that the number of bits to be carried matches the number of bits that can be carried by the number of subcarriers allocated in one or more OFDM symbols by processing (such as repetition or up-sampling).
Thus, the embodiment of the present application may increase the sequence length of the first sequence (i.e. increase the number of bits of the first sequence) through the above-mentioned process (such as repetition or upsampling) so as to be as identical as possible to the number of subcarriers to be finally mapped.
④ Subsequent processing of the second sequence
A. Description of the invention
It should be noted that, in the embodiment of the present application, the second sequence may be modulated to output a third sequence, and then the third sequence may be precoded to output a fourth sequence. The following is a detailed description.
B. Modulation of
The modulation may be a keying (SHIFTING KEYING) or constellation (constellation) generation process. In particular, the modulation may be OOK modulation, phase keying (PHASE SHIFT KEYING, PSK) modulation, frequency keying (Frequency SHIFT KEYING, FSK) modulation, amplitude keying (Amplitude SHIFT KEYING, ASK) modulation or quadrature Amplitude modulation (Quadrature Amplitude Modulation, QAM). The third sequence may be regarded as a "time domain" symbol or a modulation symbol.
For example, the second sequence is a bit sequenceIn modulating the second sequence, outputting a third sequence as modulation symbol/>
That is, the transmitter of the network device may modulate the second sequence output by the process (e.g., repetition or up-sampling) to convert the second sequence into modulation symbols. The modulation symbols may also be referred to as "time domain" symbols because OOK modulation is typically time domain modulation and their corresponding waveforms are typically single carrier waveforms.
For example, if the second sequence has 1152 bits and the 1152 bits require 8 OFDM symbol bearers, then each OFDM symbol bearer is 114 bits. Then, the 114 bits on each OFDM symbol are modulated to obtain 144 modulation symbols.
It should be noted that, in combination with the content of "8, modulation of wake-up signal" described above, the network device may perform modulation through OOK, and the low power consumption receiver in the terminal device may perform demodulation through OOK. Due to the simplicity of OOK, a low power receiver in a terminal device can be simplified to detect the energy of a modulation symbol, as long as the energy of a modulation symbol is detected to exceed a certain threshold, thereby simplifying the low power receiver.
C. Precoding
Specifically, precoding may be used to "domain convert" the third sequence (e.g., "time domain" to "frequency domain") to obtain a fourth sequence, and map the fourth sequence onto subcarriers. The fourth sequence may be considered a "frequency domain" symbol because it is mapped onto frequency domain subcarriers.
That is, the network device may convert the modulation symbols into "frequency domain" symbols through precoding and map onto subcarriers for frequency division multiplexing with other OFDM-based signals/channels.
For example, if the second sequence has 1152 bits and the 1152 bits require 8 OFDM symbol bearers, then each OFDM symbol bearer is 114 bits. Then, the 114 bits on each OFDM symbol are modulated to obtain 144 modulation symbols. Finally, the 144 modulation symbols are precoded to obtain 144 "frequency domain" symbols for mapping onto 144 subcarriers.
It should be noted that, in combination with the content of the "9" and the waveform of the wake-up signal ", waveform shaping is implemented by precoding, so that one OFDM symbol has both OOK modulation symbols for the low-power wake-up signal and modulation symbols for other signal channels.
In particular, precoding may include discrete fourier transform (Discrete Fourier Transform, DFT) precoding or quasi-inverse based precoding.
Therefore, by DFT precoding or quasi-inverse precoding, the low-power-consumption receiver of the terminal equipment can detect the OOK symbol through IDFT (inverse discrete Fourier transform) precoding or without precoding, and the power consumption of the low-power-consumption receiver is reduced.
Embodiment 2:
① Description of the invention
Based on the content in "embodiment 1" described above, in "embodiment 2", the embodiment of the present application outputs the second sequence by processing (e.g., repeating or upsampling) the first sequence as well. Here, the above-described "embodiment 1" is different in that scrambling (scrambling) of the second sequence is additionally considered in the subsequent processing of the second sequence, and is described in detail below.
② Subsequent processing of the second sequence
A. Description of the invention
It should be noted that, in the embodiment of the present application, the second sequence may be scrambled to output a fifth sequence, the fifth sequence may be modulated to output a sixth sequence, and finally the sixth sequence may be precoded to output a seventh sequence.
B. scrambling
In particular, scrambling may be used to multiply the second sequence with a scrambling sequence (scrambling sequence) to output a fifth sequence. In this way, inter-cell interference randomization can be ensured as much as possible by scrambling, thereby mitigating inter-cell interference.
For example, the second sequence is a bit sequenceAfter scrambling the second sequence, the fifth sequence is output as bit sequence/> Wherein the ithIndividual bits/>The definition is as follows:
wherein c (q) (i) represents a scrambling sequence, is a pseudo-random sequence c (n), c (n) has a length of M PN, and n=0, 1, M PN -1, and is defined as follows:
c(n)＝(x1(n+NC)+x2(n+NC))mod2
x1(n+31)＝(x1(n+3)+x1(n))mod2
x2(n+31)＝(x2(n+3)+x2(n+2)+x2(n+1)+x2(n))mod2
Where N C = 1600, the first m-sequence x 1 (N) is initialized to:
x1(0)＝1,x1(n)＝0,n＝1,2,...,30；
The initialization of the second m-sequence x 2 (n) is determined by the following formula:
c init denotes a scrambling initialization sequence (scramlbing initialization sequence), and c init can be used for initialization of x 2 (n), and c init can carry up to 31 bits of information.
Here, c init may be an initial value of a scrambling sequence generator (scrambling sequence generator) that may be used to generate a scrambling sequence and may be defined as follows:
Or alternatively
Or alternatively
Wherein f () represents a generating function;
part or all of the bits representing the Identity (ID) of a cell, and 1008 unique cell identities, are defined as follows:
Wherein, And may be determined from the primary synchronization signal (primary synchronization signal, PSS); /(I)And may be determined from the secondary synchronization signal (secondary synchronization signal, SSS).
N ID e {0,1, …,1023} represents a data scrambling identity (data scrambling identity);
n RNTI corresponds to a transmission related radio network temporary identity (Radio Network Temporary Identity, RNTI).
In summary, in some possible implementations, the initial value c init of the scrambling sequence or scrambling sequence generator used for scrambling may include the cell identityIn this way, the fifth sequence output by scrambling may carry the cell identity, so that the wake-up signal may carry the cell identity.
Alternatively, the cell identity may be part or all of the bits of the cell identity. That is, the wake-up signal may carry some or all of the bits of the cell identity. While when the wake-up signal carries part of the bits of the cell identity, the remaining bits of the cell identity need to be carried by other signals.
Optionally, in combination with the content in the "2, sequence of wake-up signals" above, the partial bits of the cell identifier may include a plurality of most significant bits or a plurality of least significant bits of the cell identifier.
C. Modulation of
The modulation may be a keying or constellation generation process. In particular, the modulation may be OOK modulation, PSK modulation, FSK, ASK modulation or QAM. The sixth sequence may be regarded as a modulation symbol. The modulation symbols may also be referred to as "time domain" symbols because OOK modulation is typically time domain modulation and their corresponding waveforms are typically single carrier waveforms.
That is, the network device may scramble the second sequence after processing (e.g., repetition or up-sampling), and then modulate the fifth sequence output by the scrambling to output the sixth sequence.
For example, if the second sequence has 1152 bits, then the 1152 bits are scrambled, resulting in scrambled 1152 bits. If the scrambled 1152 bits require 8 OFDM symbol bearers, each OFDM symbol bearer is scrambled 114 bits. The scrambled 114 bits on each OFDM symbol are then modulated to yield 144 "time domain" symbols or modulation symbols.
It should be noted that, in combination with the content of "8, modulation of wake-up signal" described above, the network device may perform modulation through OOK, and the low power consumption receiver in the terminal device may perform demodulation through OOK. Due to the simplicity of OOK, a low power receiver in a terminal device can be simplified to detect the energy of a modulation symbol, as long as the energy of a modulation symbol is detected to exceed a certain threshold, thereby simplifying the low power receiver.
D. Precoding
Specifically, precoding may be used to "domain convert" (e.g., "time domain" to "frequency domain") the sixth sequence to obtain the seventh sequence, and map the seventh sequence onto subcarriers. The seventh sequence may be regarded as a "frequency domain" symbol because it is mapped onto frequency domain subcarriers.
That is, the network device may convert the modulation symbols into "frequency domain" symbols through precoding and map onto subcarriers for frequency division multiplexing with other OFDM-based signals/channels.
For example, if the second sequence has 1152 bits, then the 1152 bits are scrambled, resulting in scrambled 1152 bits. If the scrambled 1152 bits require 8 OFDM symbol bearers, each OFDM symbol bearer is scrambled 114 bits. The scrambled 114 bits on each OFDM symbol are then modulated to yield 144 modulation symbols. Finally, the 144 modulation symbols are precoded to obtain 144 "frequency domain" symbols for mapping onto 144 subcarriers.
It should be noted that, in combination with the content of the "9" and the waveform of the wake-up signal ", waveform shaping is implemented by precoding, so that one OFDM symbol has both OOK modulation symbols for the low-power wake-up signal and modulation symbols for other signal channels.
Specifically, precoding may include DFT precoding or quasi-inverse based precoding.
Therefore, by DFT precoding or quasi-inverse precoding, the low-power-consumption receiver of the terminal equipment can detect the OOK symbol through IDFT (inverse discrete Fourier transform) precoding or without precoding, and the power consumption of the low-power-consumption receiver is reduced.
Embodiment 3:
① Description of the invention
In "embodiment 3", the embodiment of the present application still needs to increase the sequence length, i.e., increase the number of bits of the sequence.
The difference from the above-described "embodiment 1" and "embodiment 2" is that in "embodiment 3", the embodiment of the present application outputs the eighth sequence by modulating the first sequence, and then precodes the eighth sequence to output the ninth sequence. Wherein the sequence length (i.e., number of bits) of the ninth sequence is greater than the sequence length (i.e., number of bits) of the first sequence.
It should be noted that, in the embodiment of the present application, the original bits of the first sequence may be padded (the padding may be repeated multiple times by using the original bits, may be repeated multiple times by using preset bits (such as null bits) and so on) through modulation and/or precoding, so as to increase the number of bits of the first sequence, thereby outputting/obtaining the ninth sequence.
In this way, the sequence length of the first sequences is increased by modulation and precoding, i.e. the number of bits of the first sequences is increased, so as to reduce the correlation/association between the first sequences as much as possible, and ensure inter-cell interference randomization.
A. Modulation of
Modulation is a keying or constellation generation process. In particular, the modulation may be OOK modulation, PSK modulation, FSK modulation, ASK modulation or QAM. The eighth sequence may be regarded as a modulation symbol. The modulation symbols may also be referred to as "time domain" symbols because OOK modulation is typically time domain modulation and their corresponding waveforms are typically single carrier waveforms.
For example, the first sequence q is a bit sequenceAnd/>Is the total number of bits in the first sequence q. The first sequence q is modulated to output an eighth sequence as a modulation symbol
That is, the network device may modulate the first bit sequence to output an eighth sequence.
It should be noted that, in combination with the content of "8, modulation of wake-up signal" described above, the network device may perform modulation through OOK, and the low power consumption receiver in the terminal device may perform demodulation through OOK. Due to the simplicity of OOK, a low power receiver in a terminal device can be simplified to detect the energy of a modulation symbol, as long as the energy of a modulation symbol is detected to exceed a certain threshold, thereby simplifying the low power receiver.
In some possible implementations, the eighth sequence may be carried within one or more OFDM symbols.
It should be noted that, since the sequence length of the first sequence is shorter, and the sequence length of the eighth sequence obtained by modulating the first sequence may still be shorter, this may result in that the number of bits to be carried may be much smaller than the number of bits that can be carried by the number of subcarriers allocated in one or more OFDM symbols, so the number of bits to be carried matches the number of bits that can be carried by the number of subcarriers allocated in one or more OFDM symbols through processing (such as repetition or upsampling).
In this way, the embodiment of the present application can increase the sequence length of the eighth sequence (i.e. increase the number of symbols of the eighth sequence) through the above-mentioned precoding, so that the number of subcarriers of the eighth sequence is as same as the number of subcarriers of the final mapping as possible.
Specifically, the number of precoded symbols of the eighth sequence input is N, and the number of symbols of the ninth sequence output is n×x, where X is an integer greater than or equal to 1. That is, the number of symbols in the eighth sequence is increased by the above-described precoding.
For example, if the first sequence includes 32 bits and the 32 bits require 8 OFDM symbol bearers, each OFDM symbol carries 4 bits. The network device may then modulate the 4 bits resulting in 4 modulation symbols. Finally, the 4 modulation symbols are precoded to obtain 144 "frequency domain" symbols for mapping onto 144 subcarriers. It can be seen that the number of precoded input symbols is 4 and the number of output symbols is 144. At this time, n=4, and x=36, which corresponds to 36 times of processing (such as repetition or up-sampling).
B. Precoding
Specifically, precoding may be used to "domain convert" (e.g., "time domain" to "frequency domain") the eighth sequence to a ninth sequence and map the ninth sequence onto subcarriers. The ninth sequence may be regarded as a "frequency domain" symbol because it is mapped onto frequency domain subcarriers.
That is, the network device may convert the modulation symbols into "frequency domain" symbols through precoding and map onto subcarriers for frequency division multiplexing with other OFDM-based signals/channels.
For example, the eighth sequence isPrecoding the eighth sequence to output a ninth sequence as:
Wherein, Represents the total number of symbols in the ninth sequence, and/>W represents a precoding matrix.
It should be noted that, in combination with the content of the "9" and the waveform of the wake-up signal ", waveform shaping is implemented by precoding, so that one OFDM symbol has both OOK modulation symbols for the low-power wake-up signal and modulation symbols for other signal channels.
Specifically, precoding may include DFT precoding or quasi-inverse based precoding.
Therefore, by DFT precoding or quasi-inverse precoding, the low-power-consumption receiver of the terminal equipment can detect the OOK symbol through IDFT (inverse discrete Fourier transform) precoding or without precoding, and the power consumption of the low-power-consumption receiver is reduced.
Embodiment 4:
① Description of the invention
Based on the content in the foregoing "embodiment 3", in "embodiment 4", the embodiment of the present application also outputs the eighth sequence by modulating the first sequence, and then precodes the eighth sequence to output the ninth sequence. Here, the difference between the above "embodiment 3" is that the embodiment of the present application further requires the subsequent processing of the ninth sequence, which will be described in detail below.
② Subsequent processing of the ninth sequence
A. Description of the invention
It should be noted that, the embodiment of the present application may scramble the ninth sequence to output the tenth sequence.
B. scrambling
In particular, scrambling may be used to multiply the ninth sequence with the scrambling sequence to output a tenth sequence. In this way, inter-cell interference randomization can be ensured as much as possible by scrambling, thereby mitigating inter-cell interference. The scrambling sequence may be a dual-polarized scrambling sequence, i.e., a sequence that is converted from a single-polarized scrambling sequence (e.g., a value of 0 or 1) to dual-polarized (e.g., a value of 1 or-1).
For example, the ninth sequence isIn scrambling the ninth sequence, the tenth sequence is output as/>Wherein j/>Individual symbols/>The definition is as follows:
where g () represents a symbol scrambling function;
c (q) (j) represents the scrambling sequence, which is a pseudo-random sequence c (n). c (n) has a length of M PN and n=0, 1,..m PN -1 and is defined as follows:
c(n)＝(x1(n+NC)+x2(n+NC))mod2
x1(n+31)＝(x1(n+3)+x1(n))mod2
x2(n+31)＝(x2(n+3)+x2(n+2)+x2(n+1)+x2(n))mod2
Where N C = 1600, the first m-sequence x 1 (N) is initialized to:
x1(0)＝1,x1(n)＝0,n＝1,2,...,30；
The initialization of the second m-sequence x 2 (n) is determined by the following formula:
c init denotes a scrambling initialization sequence, and c init may be used for initialization of x 2 (n), and c init may carry up to 31 bits of information.
Here, c init may be an initial value of a scrambling sequence generator that may be used to generate a scrambling sequence (a single-polarized scrambling sequence), and may be defined as follows:
Or alternatively
Or alternatively
Where h () represents a generating function.
In summary, in some possible implementations, the initial value c init of the scrambling sequence or scrambling sequence generator used for scrambling may include the cell identityIn this way, the tenth sequence output by scrambling may carry the cell identity, so that the wake-up signal may carry the cell identity.
Alternatively, the cell identity may be part or all of the bits of the cell identity. That is, the wake-up signal may carry some or all of the bits of the cell identity. While when the wake-up signal carries part of the bits of the cell identity, the remaining bits of the cell identity need to be carried by other signals.
Optionally, in combination with the content in the "2, sequence of wake-up signals" above, the partial bits of the cell identifier may include a plurality of most significant bits or a plurality of least significant bits of the cell identifier.
Embodiment 5:
① Description of the invention
In the above-described "embodiment 1" or "embodiment 2", the transmitter of the network device increases the sequence length by processing (such as repetition or up-sampling). However, the sampling rate of the low-power-consumption receiver of the terminal device is lower than that of the transmitter of the network device, so that the network device performs only one processing, and descrambling of the low-power-consumption receiver of the terminal device may not be guaranteed.
For example, if the second sequence output by the transmitter of the network device for one processing has 1152 bits, and the 1152 bits require 8 OFDM symbol bearers, then each OFDM symbol bearer is 114 bits. Then, the 114 bits on each OFDM symbol are modulated to obtain 144 modulation symbols. Finally, the 144 modulation symbols are precoded to obtain 144 "frequency domain" symbols for mapping onto 144 subcarriers.
At this time, for a 15kHz subcarrier, the sampling rate of the transmitter of the network device is at least 15kHz 144=2.16M (sample/second). But since the sampling rate of the analog-to-digital converter (analog digital convertor, ADC) of the low-power receiver of the terminal device is often lower than the sampling rate of the ADC of the main radio, and also lower than the sampling rate of the transmitter of the network device, the sampling rate of the low-power receiver of the terminal device is at least 15kHz x 16 = 240k (sample/second) for 15kHz subcarriers. Because the sampling rate 240k (sample/second) of the low power consumption receiver of the terminal device is lower than the sampling rate 2.16M (sample/second) of the transmitter of the network device, the network device performs only one process, and thus the descrambling of the low power consumption receiver of the terminal device may not be guaranteed.
Based on this, in "embodiment 5", the embodiment of the present application may perform the first processing on the first sequence to output the eleventh sequence, and then perform the second processing, so as to ensure descrambling of the low power consumption receiver of the terminal device. Wherein the sequence length (i.e., number of bits) of the eleventh sequence is greater than the sequence length (i.e., number of bits) of the first sequence.
Specifically, the first processing may include a first repetition, a first upsampling, a first bit filling, or the like.
It should be noted that, the first repetition or the first upsampling may be understood that the original bits of the first sequence are used to perform the repeated filling or upsampling of the bits of the first sequence, so as to increase the number of bits of the first sequence, thereby outputting/obtaining the eleventh sequence.
For example, if the first sequence includes 32 bits, the transmitter of the network device may repeat or upsample the 32 bits for the first time, e.g., repeat or upsample the 32 bits 4 times, to finally obtain 128 bits in the eleventh sequence.
The first padding may be a first repeated padding using original bits of the first sequence, or a first repeated padding using preset bits (e.g., null bits), etc., so as to increase the number of bits of the first sequence, thereby outputting/obtaining the second sequence.
In this way, the sequence length of the first sequences is increased by the first processing, that is, the number of bits of the first sequences is increased, so as to reduce the correlation between the first sequences as much as possible, and ensure the inter-cell interference randomization.
② Subsequent processing of the eleventh sequence
A. Description of the invention
It should be noted that, in the embodiment of the present application, the eleventh sequence may be scrambled to output the twelfth sequence, then the twelfth sequence may be repeated for the second time or up-sampled for the second time to output the thirteenth sequence, and finally the thirteenth sequence may be modulated to output the fourteenth sequence, and the fourteenth sequence may be precoded to output the fifteenth sequence.
In addition, the first processing may not be adopted, and in this case, the first sequence may be scrambled to output a twelfth sequence, the twelfth sequence may be repeated for the second time or up-sampled for the second time to output a thirteenth sequence, the thirteenth sequence may be modulated to output a fourteenth sequence, and the fourteenth sequence may be precoded to output a fifteenth sequence.
B. scrambling
In particular, scrambling may be used to multiply the eleventh sequence with the scrambling sequence to output a twelfth sequence. In this way, inter-cell interference randomization can be ensured as much as possible by scrambling, thereby mitigating inter-cell interference.
For example, if the eleventh sequence includes 128 bits, the 128 bits are scrambled to obtain the scrambled 128 bits in the twelfth sequence.
In some possible implementations, the initial value c init of the scrambling sequence or scrambling sequence generator used for scrambling may contain the cell identityIn this way, the twelfth sequence output by scrambling may carry the cell identity, so that the wake-up signal may carry the cell identity.
Alternatively, the cell identity may be part or all of the bits of the cell identity. That is, the wake-up signal may carry some or all of the bits of the cell identity. While when the wake-up signal carries part of the bits of the cell identity, the remaining bits of the cell identity need to be carried by other signals.
Optionally, in combination with the content in the "2, sequence of wake-up signals" above, the partial bits of the cell identifier may include a plurality of most significant bits or a plurality of least significant bits of the cell identifier.
C. Second treatment
Specifically, the first processing may include a second repetition, a second upsampling, a second bit filling, or the like. It should be noted that, the second repetition or second upsampling may be understood that the original bits of the twelfth sequence are used to perform repeated padding or upsampling of the bits of the second time, so as to increase the number of bits of the twelfth sequence, thereby outputting/obtaining the thirteenth sequence.
For example, if the twelfth sequence includes 128 bits, the transmitter of the network device may perform a second repetition or second upsampling on the 32 bits, e.g., repeat or upsample the 32 bits 9 times, to finally obtain 1152 bits in the thirteenth sequence.
The second padding may be a second repeated padding using the original bits of the twelfth sequence, or a second repeated padding using preset bits (e.g., null bits), etc., so as to increase the number of bits of the twelfth sequence, thereby outputting/obtaining the thirteenth sequence.
In this way, the sequence length of the twelfth sequence (which can be understood as further increasing the sequence length of the first sequence) is increased by the second process, that is, the number of bits of the twelfth sequence is increased, so that the correlation/association between the first sequences is reduced as much as possible, and the interference randomization between cells is ensured, and at the same time, the descrambling of the low power consumption receiver of the terminal device is ensured.
D. Modulation of
The modulation may be a key or constellation (the generation process, in particular, the modulation may be OOK modulation, PSK modulation, FSK modulation, ASK modulation or qam. The fourteenth sequence may be considered as a modulation symbol.
That is, the network device may modulate the thirteenth sequence output after the second repetition or the second upsampling to output the fourteenth sequence.
It should be noted that, in combination with the content of "8, modulation of wake-up signal" described above, the network device may perform modulation through OOK, and the low power consumption receiver in the terminal device may perform demodulation through OOK. Due to the simplicity of OOK, a low power receiver in a terminal device can be simplified to detect the energy of a modulation symbol, as long as the energy of a modulation symbol is detected to exceed a certain threshold, thereby simplifying the low power receiver.
E. precoding
Specifically, precoding may be used to "domain convert" the fourteenth sequence (e.g., "time domain" to "frequency domain") to obtain the fifteenth sequence and map it onto the subcarriers. The fifteenth sequence may be considered a "frequency domain" symbol because it is mapped onto frequency domain subcarriers.
That is, the network device may convert the modulation symbols into "frequency domain" symbols through precoding and map onto subcarriers for frequency division multiplexing with other OFDM-based signals/channels.
It should be noted that, in combination with the content of the "9" and the waveform of the wake-up signal ", waveform shaping is implemented by precoding, so that one OFDM symbol has both OOK modulation symbols for the low-power wake-up signal and modulation symbols for other signal channels.
Specifically, precoding may include DFT precoding or quasi-inverse based precoding.
Therefore, by DFT precoding or quasi-inverse precoding, the low-power-consumption receiver of the terminal equipment can detect the OOK symbol through IDFT (inverse discrete Fourier transform) precoding or without precoding, and the power consumption of the low-power-consumption receiver is reduced.
4. An exemplary illustration of a wake-up signal processing method
1) Description of the invention
In combination with the content of "embodiment 1" and "embodiment 2" described above, an example of a wake-up signal processing method according to an embodiment of the present application is described below. It should be noted that the method may be applied to a network device. The network device may be a chip, a chip module, a communication module, or the like, which is not particularly limited.
Fig. 2 is a schematic flow chart of a wake-up signal processing method according to an embodiment of the present application, which specifically includes the following steps:
S210, processing the first sequence and outputting a second sequence.
It should be noted that, the details of the "first sequence", "process", and "second sequence" are described in the foregoing, and are not repeated.
Therefore, the application increases the sequence length of the first sequences, namely increases the bit number of the first sequences, and realizes the processing of the wake-up signals so as to reduce the correlation/association among the first sequences as much as possible and ensure the randomization of the inter-cell interference.
2) Some possible implementations
In combination with the foregoing, some possible implementations are described below, while others not described, which are detailed in the foregoing, and are not described herein.
In some possible implementations, processing the first sequence may include:
the first sequence is repeated or up-sampled.
In some possible implementations, the first sequence may be an encoded bit sequence.
In addition, in connection with the content of the "② first sequence" of the above "embodiment 1", the coding may include channel coding or may include channel coding plus CRC coding.
In some possible implementations, the method may further include:
Modulating the second sequence and outputting a third sequence;
And pre-encoding the third sequence and outputting a fourth sequence.
In addition, in combination with the content of "④ subsequent processing of the second sequence of" embodiment 1 "described above, the present application may modulate the second sequence output by the processing, so as to convert the second sequence into a" time domain "symbol or a modulation symbol, then convert the" time domain "symbol or the modulation symbol into a" frequency domain "symbol through precoding, and map the" frequency domain "symbol onto subcarriers, so as to perform frequency division multiplexing with other OFDM-based signals/channels.
In some possible implementations, the method may further include:
Scrambling the second sequence and outputting a fifth sequence.
In addition, in combination with the content of "② subsequent processing of the second sequence" in the above "embodiment 2", the present application may reduce inter-cell interference by scrambling the second sequence to ensure inter-cell interference randomization as much as possible.
In some possible implementations, the scrambling code sequence used for scrambling or the initial value of the scrambling code sequence generator may contain the cell identity.
It should be noted that, in combination with the content in the "subsequent processing of ② second sequence" in the foregoing "embodiment 2", the fifth sequence output by scrambling in the present application may carry the cell identifier, so that the wake-up signal may carry the cell identifier.
In some possible implementations, it may further include:
Modulating the fifth sequence and outputting a sixth sequence;
the sixth sequence is precoded, and a seventh sequence is output.
In addition, in combination with the content of the "subsequent processing of ② second sequences" in the foregoing "embodiment 2", the present application may modulate the fifth sequence output by scrambling, so as to convert the fifth sequence into a "time domain" symbol or a modulation symbol, and then convert the "time domain" symbol or the modulation symbol into a "frequency domain" symbol through precoding, and map the "frequency domain" symbol onto subcarriers, so as to perform frequency division multiplexing with other OFDM-based signals/channels.
In some possible implementations, precoding may include discrete fourier transform precoding or quasi-inverse based precoding.
In addition, in combination with the content of the foregoing "embodiment 1" and "embodiment 2", by DFT precoding or precoding based on quasi-inverse precoding, the low power consumption receiver of the terminal device may detect the OOK symbol by IDFT precoding or without precoding, thereby reducing the power consumption of the low power consumption receiver.
4. Yet another exemplary illustration of a wake-up signal processing method
1) Description of the invention
In combination with the content of "embodiment 3" and "embodiment 4" described above, a further wake-up signal processing method according to an embodiment of the present application will be described as an example. It should be noted that the method may be applied to a network device. The network device may be a chip, a chip module, a communication module, or the like, which is not particularly limited.
Fig. 3 is a schematic flow chart of another wake-up signal processing method according to an embodiment of the present application, which specifically includes the following steps:
s310, modulating the first sequence and outputting an eighth sequence.
S320, precoding the eighth sequence and outputting a ninth sequence.
It should be noted that, the details of the "first sequence", "modulation", "precoding", "eighth sequence", and "ninth sequence" are described in the foregoing, and are not repeated herein.
It can be seen that the present application converts the first sequence into "time domain" symbols or modulation symbols by modulation, then converts the "time domain" symbols or modulation symbols into "frequency domain" symbols by precoding, and maps onto subcarriers for frequency division multiplexing with other OFDM-based signals/channels. Meanwhile, the sequence length of the first sequences is increased through modulation and/or precoding, namely the bit number of the first sequences is increased, so that the wake-up signals are processed, the correlation/association among the first sequences is reduced as much as possible, and the inter-cell interference randomization is ensured.
2) Some possible implementations
In combination with the foregoing, some possible implementations are described below, while others not described, which are detailed in the foregoing, and are not described herein.
In some possible implementations, the first sequence may be an encoded bit sequence.
In addition, in connection with the content of the "② first sequence" of the above "embodiment 1", the coding may include channel coding or may include channel coding plus CRC coding.
In some possible implementations, precoding may include discrete fourier transform precoding or quasi-inverse based precoding.
It should be noted that, in combination with the content in the foregoing "embodiment 3", by DFT precoding or precoding based on quasi-inverse precoding, the low power consumption receiver of the terminal device may detect the OOK symbol by IDFT decoding precoding or without decoding precoding, thereby reducing power consumption of the low power consumption receiver.
In some possible implementations, the method may further include:
Scrambling the ninth sequence, outputting a tenth sequence.
In addition, in combination with the following processing of the ninth sequence of "②" in the above-described "embodiment 4", the present application may reduce inter-cell interference by scrambling the ninth sequence to ensure inter-cell interference randomization as much as possible.
In some possible implementations, the scrambling code sequence used for scrambling or the initial value of the scrambling code sequence generator contains the cell identity.
It should be noted that, in combination with the content of the "following processing of the ② ninth sequence" in the foregoing "embodiment 4", the fifth sequence output by scrambling in the present application may carry the cell identifier, so that the wake-up signal may carry the cell identifier.
5. Yet another exemplary illustration of a wake-up signal processing method
1) Description of the invention
In combination with the content of the foregoing "embodiment 5", a further wake-up signal processing method according to an embodiment of the present application will be described as an example. It should be noted that the method may be applied to a network device. The network device may be a chip, a chip module, a communication module, or the like, which is not particularly limited.
Fig. 4 is a schematic flow chart of another wake-up signal processing method according to an embodiment of the present application, which specifically includes the following steps:
S410, performing first processing on the first sequence, and outputting an eleventh sequence.
It should be noted that, the details of the "first sequence", "first repetition", "first upsampling", and "eleventh sequence" are described in the foregoing, and are not repeated.
Therefore, the application increases the sequence length of the first sequence through the first processing, namely increases the bit number of the first sequence, and realizes the processing of the wake-up signal so as to reduce the relativity/relevance among the first sequences as much as possible and ensure the randomization of the inter-cell interference.
2) Some possible implementations
In combination with the foregoing, some possible implementations are described below, while others not described, which are detailed in the foregoing, and are not described herein.
In some possible implementations, the first processing includes a first repetition or first employment.
In some possible implementations, the first sequence may be an encoded bit sequence.
In addition, in connection with the content of the "② first sequence" of the above "embodiment 1", the coding may include channel coding or may include channel coding plus CRC coding.
In some possible implementations, the method may further include:
scrambling the eleventh sequence, outputting the twelfth sequence.
In addition, in combination with the following processing of the eleventh sequence of "②" in the above-described "embodiment 5", the present application may reduce inter-cell interference by scrambling the eleventh sequence to ensure inter-cell interference randomization as much as possible.
In some possible implementations, the scrambling code sequence used for scrambling or the initial value of the scrambling code sequence generator may contain the cell identity.
It should be noted that, in combination with the content of the following processing of the eleventh sequence of "②" in the foregoing "embodiment 5", the twelfth sequence output by scrambling in the present application may carry the cell identifier, so that the wake-up signal may carry the cell identifier.
In some possible implementations, the method may further include:
The twelfth sequence is subjected to a second process, and a thirteenth sequence is output.
It should be noted that, in combination with the following processing of the eleventh sequence of "②" in the foregoing "embodiment 5", the present application may increase the sequence length of the twelfth sequence (which may be understood as further increasing the sequence length of the first sequence) through the second processing, that is, increase the number of bits of the twelfth sequence, and ensure the descrambling of the low power consumption receiver of the terminal device while reducing the correlation/association between the first sequences as much as possible, and ensuring the inter-cell interference randomization.
In some possible implementations, the second processing of the twelfth sequence includes:
The twelfth sequence is repeated a second time or upsampled a second time.
In some possible implementations, the method may further include:
Modulating the thirteenth sequence to output a fourteenth sequence;
The fourteenth sequence is precoded, and the fifteenth sequence is output.
In addition, in combination with the following processing of the eleventh sequence of ② in the foregoing "embodiment 5", the present application may modulate the thirteenth sequence output by the second repetition or the second upsampling, so as to convert the thirteenth sequence into a "time domain" symbol or a modulation symbol, and then convert the "time domain" symbol or the modulation symbol into a "frequency domain" symbol through precoding, and map the "frequency domain" symbol onto a subcarrier, so as to perform frequency division multiplexing with other OFDM-based signals/channels.
In some possible implementations, precoding includes discrete fourier transform precoding or quasi-inverse based precoding.
It should be noted that, in combination with the content of the following processing of the '② eleventh sequence' in the 'embodiment 5', the present application may enable the low power consumption receiver of the terminal device to detect the OOK symbol through IDFT precoding or without precoding by DFT precoding or precoding based on quasi-inverse precoding, thereby reducing the power consumption of the low power consumption receiver.
5. An illustration of wake-up signal processing apparatus
1. Description of the invention
The foregoing description of the embodiments of the present application has been presented primarily from a method-side perspective. It will be appreciated that the network device, in order to implement the above-described functions, includes corresponding hardware structures and/or software modules that perform the respective functions. Those of skill in the art will readily appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is implemented as hardware or computer software driven hardware depends upon the particular application and design constraints imposed on the solution. Those skilled in the art may implement the described functionality using different approaches for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
The embodiment of the application can divide the functional units of the network equipment according to the method example. For example, each functional unit may be divided corresponding to each function, or two or more functions may be integrated in one processing unit. The integrated units described above may be implemented either in hardware or in software program modules. It should be noted that, in the embodiment of the present application, the division of the units is schematic, but only one logic function is divided, and another division manner may be adopted in actual implementation.
In case of using integrated units, fig. 5 is a functional unit block diagram of a wake-up signal processing apparatus according to an embodiment of the present application. The wake-up signal processing apparatus 500 includes: a processing unit 501.
In some possible implementations, the processing unit 501 may be a module unit for processing signals, data, information, sequences, and the like, which is not particularly limited.
In some possible implementations, the processing unit 501 may be a processor or controller, which may be, for example, a baseband processor, a baseband chip, a central processing unit (central processing unit, CPU), a general purpose processor, a digital signal processor (DIGITAL SIGNAL processor, DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (field programmable GATE ARRAY, FPGA), or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. Which may implement or perform the various exemplary logical blocks, modules, and circuits described in connection with the present disclosure. The processing unit may also be a combination that implements computing functionality, e.g., comprising one or more microprocessor combinations, a combination of DSPs and microprocessors, etc.
In some possible implementations, the wake-up signal processing device 500 may further comprise a storage unit for storing computer program code or instructions executed by the wake-up signal processing device 500. The memory unit may be a memory.
In some possible implementations, the wake-up signal processing device 500 may be a chip or a chip module.
In some possible implementations, the processing unit 501 may be integrated in other units.
For example, the processing unit 501 may be integrated in a communication unit.
The communication unit may be a communication interface, a transceiver circuit, or the like.
In some possible implementations, the processing unit 501 is configured to perform any step performed by a network device/chip module/transmitter of a network device, etc. as in the above-described method embodiments. The following is a detailed description.
In particular implementation, the processing unit 501 is configured to perform any step in the method embodiments described above, and when performing an action such as sending, optionally invoke other units to complete the corresponding operation. The following is a detailed description.
The processing unit 501 is configured to process the first sequence and output a second sequence.
Therefore, the application increases the sequence length of the first sequences, namely increases the bit number of the first sequences, and realizes the processing of the wake-up signals so as to reduce the correlation/association among the first sequences as much as possible and ensure the randomization of the inter-cell interference.
It should be noted that, the specific implementation of each operation in the embodiment shown in fig. 5 may be described in detail in the above-shown method embodiment, and will not be described in detail herein.
2. Some possible implementations
Some possible implementations are described below. Some specific descriptions may be found in the foregoing, and will not be repeated here.
In some possible implementations, in terms of processing the first sequence, the processing unit 501 may be configured to:
the first sequence is repeated or up-sampled.
In some possible implementations, the first sequence may be an encoded bit sequence.
In addition, in connection with the content of the "② first sequence" of the above "embodiment 1", the coding may include channel coding or may include channel coding plus CRC coding.
In some possible implementations, the wake-up signal processing apparatus 500 may further include a modulation and precoding unit to:
Modulating the second sequence and outputting a third sequence;
And pre-encoding the third sequence and outputting a fourth sequence.
In addition, in combination with the content of "④ subsequent processing of the second sequence of" embodiment 1 "described above, the present application may modulate the second sequence output by the processing, so as to convert the second sequence into a" time domain "symbol or a modulation symbol, then convert the" time domain "symbol or the modulation symbol into a" frequency domain "symbol through precoding, and map the" frequency domain "symbol onto subcarriers, so as to perform frequency division multiplexing with other OFDM-based signals/channels.
In some possible implementations, the wake-up signal processing apparatus 500 may further comprise a scrambling unit for:
Scrambling the second sequence and outputting a fifth sequence.
In addition, in combination with the content of "② subsequent processing of the second sequence" in the above "embodiment 2", the present application may reduce inter-cell interference by scrambling the second sequence to ensure inter-cell interference randomization as much as possible.
In some possible implementations, the scrambling code sequence used for scrambling or the initial value of the scrambling code sequence generator may contain the cell identity.
It should be noted that, in combination with the content in the "subsequent processing of ② second sequence" in the foregoing "embodiment 2", the fifth sequence output by scrambling in the present application may carry the cell identifier, so that the wake-up signal may carry the cell identifier.
In some possible implementations, the wake-up signal processing apparatus 500 may further include a modulation and precoding unit to:
Modulating the fifth sequence and outputting a sixth sequence;
the sixth sequence is precoded, and a seventh sequence is output.
In addition, in combination with the content of the "subsequent processing of ② second sequences" in the foregoing "embodiment 2", the present application may modulate the fifth sequence output by scrambling, so as to convert the fifth sequence into a "time domain" symbol or a modulation symbol, and then convert the "time domain" symbol or the modulation symbol into a "frequency domain" symbol through precoding, and map the "frequency domain" symbol onto subcarriers, so as to perform frequency division multiplexing with other OFDM-based signals/channels.
In some possible implementations, precoding may include discrete fourier transform precoding or quasi-inverse based precoding.
It should be noted that, in combination with the content in the foregoing "embodiment 1" and "embodiment 2", by DFT precoding or precoding based on quasi-inverse precoding, the low power consumption receiver of the terminal device may obtain the "time domain" symbol by IDFT precoding or without precoding, thereby simplifying the low power consumption receiver.
6. Yet another exemplary illustration of a wake-up signal processing apparatus
In case of using integrated units, fig. 6 is a block diagram showing functional units of a wake-up signal processing apparatus according to still another embodiment of the present application. The wake-up signal processing apparatus 600 includes: a processing unit 601.
In some possible implementations, the processing unit 601 may be a module unit for processing signals, data, information, and the like, which is not particularly limited.
In some possible implementations, the processing unit 601 may be a processor or controller, which may be, for example, a baseband processor, a baseband chip, a central processing unit (central processing unit, CPU), a general purpose processor, a digital signal processor (DIGITAL SIGNAL processor, DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (field programmable GATE ARRAY, FPGA), or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. Which may implement or perform the various exemplary logical blocks, modules, and circuits described in connection with the present disclosure. The processing unit may also be a combination that implements computing functionality, e.g., comprising one or more microprocessor combinations, a combination of DSPs and microprocessors, etc.
In some possible implementations, the wake-up signal processing apparatus 600 may further comprise a storage unit for storing computer program code or instructions executed by the wake-up signal processing apparatus 600. The memory unit may be a memory.
In some possible implementations, the wake-up signal processing device 600 may be a chip or a chip module.
In some possible implementations, the processing unit 601 may be integrated in other units.
For example, the processing unit 601 may be integrated in a communication unit. The communication unit may be a communication interface, a transceiver circuit, or the like.
In some possible implementations, the processing unit 601 is configured to perform any of the steps performed by the network device/chip module/transmitter of the network device, etc. as in the method embodiments described above. The following is a detailed description.
In particular implementations, the processing unit 601 is configured to perform any of the steps of the method embodiments described above, and when performing an action such as sending, optionally invoke other units to complete the corresponding operations. The following is a detailed description.
A processing unit 601, configured to modulate the first sequence and output an eighth sequence; and precoding the eighth sequence, and outputting a ninth sequence.
It can be seen that the present application converts the first sequence into "time domain" symbols or modulation symbols by modulation, then converts the "time domain" symbols or modulation symbols into "frequency domain" symbols by precoding, and maps onto subcarriers for frequency division multiplexing with other OFDM-based signals/channels. Meanwhile, the sequence length of the first sequences is increased through modulation and/or precoding, namely the bit number of the first sequences is increased, so that the wake-up signals are processed, the correlation/association among the first sequences is reduced as much as possible, and the inter-cell interference randomization is ensured.
It should be noted that, the specific implementation of each operation in the embodiment shown in fig. 6 may be described in detail in the above-shown method embodiment, and will not be described in detail herein.
2. Some possible implementations
Some possible implementations are described below. Some specific descriptions may be found in the foregoing, and will not be repeated here.
In some possible implementations, the first sequence may be an encoded bit sequence.
In addition, in connection with the content of the "② first sequence" of the above "embodiment 1", the coding may include channel coding or may include channel coding plus CRC coding.
In some possible implementations, precoding may include discrete fourier transform precoding or quasi-inverse based precoding.
It should be noted that, in combination with the content in the foregoing "embodiment 3", by DFT precoding or precoding based on quasi-inverse precoding, the low power consumption receiver of the terminal device may detect the OOK symbol by IDFT decoding precoding or without decoding precoding, thereby reducing power consumption of the low power consumption receiver.
In some possible implementations, the wake-up signal processing apparatus 600 may further comprise a scrambling unit for:
Scrambling the ninth sequence, outputting a tenth sequence.
In addition, in combination with the following processing of the ninth sequence of "②" in the above-described "embodiment 4", the present application may reduce inter-cell interference by scrambling the ninth sequence to ensure inter-cell interference randomization as much as possible.
In some possible implementations, the scrambling code sequence used for scrambling or the initial value of the scrambling code sequence generator contains the cell identity.
It should be noted that, in combination with the content of the "following processing of the ② ninth sequence" in the foregoing "embodiment 4", the fifth sequence output by scrambling in the present application may carry the cell identifier, so that the wake-up signal may carry the cell identifier.
7. Yet another exemplary illustration of a wake-up signal processing apparatus
In case of using integrated units, fig. 7 is a block diagram showing functional units of a wake-up signal processing apparatus according to still another embodiment of the present application. The wake-up signal processing apparatus 700 includes: a processing unit 701.
In some possible implementations, the processing unit 701 may be a module unit for processing signals, data, information, and the like, which is not particularly limited.
In some possible implementations, the processing unit 701 may be a processor or controller, which may be, for example, a baseband processor, a baseband chip, a central processing unit (central processing unit, CPU), a general purpose processor, a digital signal processor (DIGITAL SIGNAL processor, DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (field programmable GATE ARRAY, FPGA), or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. Which may implement or perform the various exemplary logical blocks, modules, and circuits described in connection with the present disclosure. The processing unit may also be a combination that implements computing functionality, e.g., comprising one or more microprocessor combinations, a combination of DSPs and microprocessors, etc.
In some possible implementations, the wake-up signal processing apparatus 700 may further comprise a storage unit for storing computer program code or instructions executed by the sequence processing apparatus 700. The memory unit may be a memory.
In some possible implementations, the wake-up signal processing device 700 may be a chip or a chip module.
In some possible implementations, the processing unit 701 may be integrated in other units.
For example, the processing unit 701 may be integrated in a communication unit. The communication unit may be a communication interface, a transceiver circuit, or the like.
In some possible implementations, the processing unit 701 is configured to perform any of the steps performed by the network device/chip module/transmitter of the network device, etc. in the above-described method embodiments. The following is a detailed description.
In particular implementation, the processing unit 701 is configured to perform any of the steps in the method embodiments described above, and when performing an action such as sending, optionally invoke other units to complete the corresponding operation. The following is a detailed description.
A processing unit 701, configured to perform a first process on the first sequence, and output an eleventh sequence.
Therefore, the application increases the sequence length of the first sequence through the first processing, namely increases the bit number of the first sequence, and realizes the processing of the wake-up signal so as to reduce the relativity/relevance among the first sequences as much as possible and ensure the randomization of the inter-cell interference.
It should be noted that, the specific implementation of each operation in the embodiment shown in fig. 7 may be described in detail in the above-shown method embodiment, and will not be described in detail herein.
2. Some possible implementations
Some possible implementations are described below. Some specific descriptions may be found in the foregoing, and will not be repeated here.
In some possible implementations, in terms of first processing the first sequence, the processing unit 701 may be configured to:
The first sequence is repeated a first time or upsampled a first time.
In some possible implementations, the first sequence may be an encoded bit sequence.
In addition, in connection with the content of the "② first sequence" of the above "embodiment 1", the coding may include channel coding or may include channel coding plus CRC coding.
In some possible implementations, the wake-up signal processing apparatus 700 may further comprise a scrambling unit for:
scrambling the eleventh sequence, outputting the twelfth sequence.
In addition, in combination with the following processing of the eleventh sequence of "②" in the above-described "embodiment 5", the present application may reduce inter-cell interference by scrambling the eleventh sequence to ensure inter-cell interference randomization as much as possible.
In some possible implementations, the scrambling code sequence used for scrambling or the initial value of the scrambling code sequence generator may contain the cell identity.
It should be noted that, in combination with the content of the following processing of the eleventh sequence of "②" in the foregoing "embodiment 5", the twelfth sequence output by scrambling in the present application may carry the cell identifier, so that the wake-up signal may carry the cell identifier.
In some possible implementations, the processing unit 701 may also be configured to:
The twelfth sequence is subjected to a second process, and a thirteenth sequence is output.
It should be noted that, in combination with the following processing of the eleventh sequence of "②" in the foregoing "embodiment 5", the present application may increase the sequence length of the twelfth sequence (which may be understood as further increasing the sequence length of the first sequence) by repeating or upsampling for the second time, that is, increase the number of bits of the twelfth sequence, and ensure descrambling of the low power consumption receiver of the terminal device while reducing the correlation/association between the respective first sequences as much as possible, thereby ensuring randomization of inter-cell interference.
In some possible implementations, in performing the second processing on the twelfth sequence, the processing unit 701 may be configured to:
The twelfth sequence is repeated a second time or upsampled a second time.
In some possible implementations, the wake-up signal processing apparatus 700 may further include a modulation and precoding unit to:
Modulating the thirteenth sequence to output a fourteenth sequence;
The fourteenth sequence is precoded, and the fifteenth sequence is output.
In addition, in combination with the following processing of the eleventh sequence of ② in the foregoing "embodiment 5", the present application may modulate the thirteenth sequence output by the second repetition or the second upsampling, so as to convert the thirteenth sequence into a "time domain" symbol or a modulation symbol, and then convert the "time domain" symbol or the modulation symbol into a "frequency domain" symbol through precoding, and map the "frequency domain" symbol onto a subcarrier, so as to perform frequency division multiplexing with other OFDM-based signals/channels.
In some possible implementations, precoding may include discrete fourier transform precoding or quasi-inverse based precoding.
It should be noted that, in combination with the content of the following processing of the '② eleventh sequence' in the 'embodiment 5', the present application may enable the low power consumption receiver of the terminal device to detect the OOK symbol through IDFT precoding or without precoding by DFT precoding or precoding based on quasi-inverse precoding, thereby reducing the power consumption of the low power consumption receiver.
8. An illustration of a network device
Referring to fig. 8, fig. 8 is a schematic structural diagram of a network device according to an embodiment of the application. Wherein the network device 800 may include a processor 810, a memory 820, and a communication bus connecting the processor 810 and the memory 820.
In some possible implementations, memory 820 includes, but is not limited to, random access memory (random access memory, RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM), or portable read-only memory (compact disc read-only memory, CD-ROM), memory 820 for storing program code and transmitted data executed by network device 800.
In some possible implementations, the network device 800 also includes a communication interface for receiving and transmitting data.
In some possible implementations, the processor 810 may be one or more Central Processing Units (CPUs), which in the case where the processor 810 is one Central Processing Unit (CPU), may be a single-core Central Processing Unit (CPU) or a multi-core Central Processing Unit (CPU).
In some possible implementations, the processor 810 may be a baseband chip, a Central Processing Unit (CPU), a general purpose processor, DSP, ASIC, FPGA, or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof.
In particular implementations, the processor 810 in the network device 800 is configured to execute the computer program or instructions 821 stored in the memory 820 to perform the following operations:
The first sequence is processed and the second sequence is output.
Therefore, the application increases the sequence length of the first sequences, namely increases the bit number of the first sequences, and realizes the processing of the wake-up signals so as to reduce the correlation/association among the first sequences as much as possible and ensure the randomization of the inter-cell interference.
It should be noted that, the specific implementation of each operation may be described in the above-illustrated method embodiment, and the network device 800 may be used to execute the above-illustrated method embodiment of the present application, which is not described herein.
9. Yet another example illustration of a network device
Referring to fig. 9, fig. 9 is a schematic structural diagram of another network device according to an embodiment of the present application. The network device 900 may include a processor 910, a memory 920, and a communication bus connecting the processor 910 and the memory 920.
In some possible implementations, memory 920 includes, but is not limited to, random access memory (random access memory, RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM), or portable read-only memory (compact disc read-only memory, CD-ROM), memory 920 for storing program code and transmitted data for execution by network device 900.
In some possible implementations, the network device 900 also includes a communication interface for receiving and transmitting data.
In some possible implementations, the processor 910 may be one or more Central Processing Units (CPUs), and in the case where the processor 910 is one Central Processing Unit (CPU), the Central Processing Unit (CPU) may be a single-core Central Processing Unit (CPU) or a multi-core Central Processing Unit (CPU).
In some possible implementations, the processor 910 may be a baseband chip, a Central Processing Unit (CPU), a general purpose processor, DSP, ASIC, FPGA, or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof.
In particular implementations, the processor 910 in the network device 900 is configured to execute the computer program or instructions 921 stored in the memory 920 to perform the following operations:
Modulating the first sequence and outputting an eighth sequence;
The eighth sequence is precoded, and a ninth sequence is output.
It can be seen that the present application converts the first sequence into "time domain" symbols or modulation symbols by modulation, then converts the "time domain" symbols or modulation symbols into "frequency domain" symbols by precoding, and maps onto subcarriers for frequency division multiplexing with other OFDM-based signals/channels. Meanwhile, the sequence length of the first sequences is increased through modulation and/or precoding, namely the bit number of the first sequences is increased, so that the wake-up signals are processed, the correlation/association among the first sequences is reduced as much as possible, and the inter-cell interference randomization is ensured.
It should be noted that, the specific implementation of each operation may be described in the foregoing method embodiment, and the network device 900 may be used to execute the foregoing method embodiment of the present application, which is not described herein.
10. Yet another example illustration of a network device
Referring to fig. 10, fig. 10 is a schematic structural diagram of another network device according to an embodiment of the present application. Wherein the network device 1000 may include a processor 1010, a memory 1020, and a communication bus for connecting the processor 1010 and the memory 1020.
In some possible implementations, memory 1020 includes, but is not limited to, random access memory (random access memory, RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM), or portable read-only memory (compact disc read-only memory, CD-ROM), memory 1020 for storing program code and data for execution by network device 1000.
In some possible implementations, the network device 1000 also includes a communication interface for receiving and transmitting data.
In some possible implementations, the processor 1010 may be one or more Central Processing Units (CPUs), which in the case where the processor 1010 is one Central Processing Unit (CPU), may be a single-core Central Processing Unit (CPU) or a multi-core Central Processing Unit (CPU).
In some possible implementations, the processor 1010 may be a baseband chip, a Central Processing Unit (CPU), a general purpose processor, DSP, ASIC, FPGA, or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof.
In particular implementations, the processor 1010 in the network device 1000 is configured to execute the computer program or instructions 1021 stored in the memory 1020 to perform the following operations:
The first sequence is subjected to a first process, and an eleventh sequence is output.
Therefore, the application increases the sequence length of the first sequence through the first processing, namely increases the bit number of the first sequence, and realizes the processing of the wake-up signal so as to reduce the relativity/relevance among the first sequences as much as possible and ensure the randomization of the inter-cell interference.
It should be noted that, the specific implementation of each operation may be described in the above-illustrated method embodiment, and the network device 1000 may be used to execute the above-illustrated method embodiment of the present application, which is not described herein.
11. Other related exemplary illustrations
In some possible implementations, the above-described method embodiments may be applied to or among network devices. That is, the execution body of the above-mentioned method embodiment may be a network device, and may be a chip, a chip module, a module, or a transmitter of the network device, which is not limited in particular.
The embodiment of the application also provides a chip which comprises a processor, a memory and a computer program or instructions stored on the memory, wherein the processor executes the computer program or instructions to realize the steps described in the embodiment of the method.
The embodiment of the application also provides a chip module, which comprises a receiving and transmitting assembly and a chip, wherein the chip comprises a processor, a memory and a computer program or instructions stored on the memory, and the processor executes the computer program or instructions to realize the steps described in the embodiment of the method.
The embodiments of the present application also provide a computer-readable storage medium storing a computer program or instructions which, when executed, implement the steps described in the method embodiments above.
Embodiments of the present application also provide a computer program product comprising a computer program or instructions which, when executed, implement the steps described in the method embodiments above.
The embodiment of the application also provides a communication system which comprises the network equipment and the terminal equipment.
For the above embodiments, for simplicity of description, the same is denoted as a series of combinations of actions. It will be appreciated by persons skilled in the art that the application is not limited by the order of acts described, as some steps in embodiments of the application may be performed in other orders or concurrently. In addition, those skilled in the art will appreciate that the embodiments described in the specification are presently preferred embodiments, and that the acts, steps, modules, or units, etc. that are described are not necessarily required by the embodiments of the application.
In the foregoing embodiments, the descriptions of the embodiments of the present application are emphasized, and in part, not described in detail in one embodiment, reference may be made to related descriptions of other embodiments.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied in hardware, or may be embodied in software instructions executed by a processor. The software instructions may be comprised of corresponding software modules that may be stored in RAM, flash memory, ROM, EPROM, electrically Erasable EPROM (EEPROM), registers, hard disk, a removable disk, a compact disk read-only (CD-ROM), or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. In the alternative, the storage medium may be integral to the processor. The processor and the storage medium may reside in an ASIC. In addition, the ASIC may be located in a terminal device or a management device. The processor and the storage medium may reside as discrete components in a terminal device or management device.
Those skilled in the art will appreciate that in one or more of the examples described above, the functions described in the embodiments of the present application may be implemented, in whole or in part, in software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, produces a flow or function in accordance with embodiments of the present application, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by a wired (e.g., coaxial cable, fiber optic, digital subscriber line (digital subscriber line, DSL)), or wireless (e.g., infrared, wireless, microwave, etc.). The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains an integration of one or more available media. The usable medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a digital video disc (digital video disc, DVD)), or a semiconductor medium (e.g., a Solid State Drive (SSD)), or the like.
The respective apparatuses and the respective modules/units included in the products described in the above embodiments may be software modules/units, may be hardware modules/units, or may be partly software modules/units, and partly hardware modules/units. For example, for each device or product applied to or integrated on a chip, each module/unit included in the device or product may be implemented in hardware such as a circuit, or at least some modules/units may be implemented in software program, where the software program runs on a processor integrated inside the chip, and the remaining (if any) part of modules/units may be implemented in hardware such as a circuit; for each device and product applied to or integrated in the chip module, each module/unit contained in the device and product can be realized in a hardware manner such as a circuit, different modules/units can be located in the same component (such as a chip, a circuit module and the like) or different components of the chip module, or at least part of the modules/units can be realized in a software program, the software program runs on a processor integrated in the chip module, and the rest (if any) of the modules/units can be realized in a hardware manner such as a circuit; for each device, product, or application to or integrated with the terminal device, each module/unit included in the device may be implemented in hardware such as a circuit, and different modules/units may be located in the same component (e.g., a chip, a circuit module, etc.) or different components in the terminal device, or at least some modules/units may be implemented in a software program, where the software program runs on a processor integrated within the terminal device, and the remaining (if any) some modules/units may be implemented in hardware such as a circuit.
The foregoing detailed description of the embodiments of the present application further illustrates the purposes, technical solutions and advantageous effects of the embodiments of the present application, and it should be understood that the foregoing description is only a specific implementation of the embodiments of the present application, and is not intended to limit the scope of the embodiments of the present application, and any modifications, equivalent substitutions, improvements, etc. made on the basis of the technical solutions of the embodiments of the present application should be included in the scope of the embodiments of the present application.
Claims (28)
1. A wake-up signal processing method, comprising:
And processing the first sequence, and outputting a second sequence, wherein the sequence length of the second sequence is larger than that of the first sequence.
2. The method of claim 1, wherein the processing the first sequence comprises:
the first sequence is repeated or up-sampled.
3. The method of claim 1, wherein the first sequence is a coded bit sequence.
4. The method as recited in claim 1, further comprising:
modulating the second sequence and outputting a third sequence;
and pre-coding the third sequence and outputting a fourth sequence.
5. The method as recited in claim 1, further comprising:
scrambling the second sequence, and outputting a fifth sequence.
6. The method of claim 5, wherein the scrambling code sequence or initial value of a scrambling code sequence generator used for scrambling comprises a cell identity.
7. The method as recited in claim 5, further comprising:
Modulating the fifth sequence and outputting a sixth sequence;
and pre-encoding the sixth sequence and outputting a seventh sequence.
8. The method according to claim 4 or 7, characterized in that the precoding comprises discrete fourier transform precoding or pseudo-inverse based precoding.
9. A wake-up signal processing method, comprising:
Modulating the first sequence and outputting an eighth sequence;
And pre-encoding the eighth sequence and outputting a ninth sequence.
10. The method of claim 9, wherein the first sequence is a coded bit sequence.
11. The method of claim 9, wherein the precoding comprises discrete fourier transform precoding or pseudo-inverse based precoding.
12. The method according to any one of claims 9-11, further comprising:
scrambling the ninth sequence, and outputting a tenth sequence.
13. The method of claim 12, wherein the scrambling code sequence or initial value of a scrambling code sequence generator used for scrambling comprises a cell identity.
14. A wake-up signal processing method, comprising:
and performing first processing on the first sequence, and outputting an eleventh sequence, wherein the sequence length of the eleventh sequence is greater than that of the first sequence.
15. The method of claim 14, wherein the first processing the first sequence comprises:
The first sequence is repeated a first time or upsampled a first time.
16. The method of claim 14, wherein the first sequence is a coded bit sequence.
17. The method as recited in claim 14, further comprising:
Scrambling the eleventh sequence, and outputting a twelfth sequence.
18. The method of claim 17, wherein the scrambling code sequence or initial value of a scrambling code sequence generator used for scrambling comprises a cell identity.
19. The method as recited in claim 17, further comprising:
And performing a second treatment on the twelfth sequence to output a thirteenth sequence, wherein the sequence length of the thirteenth sequence is greater than that of the twelfth sequence.
20. The method of claim 19, wherein said subjecting the twelfth sequence to a second treatment comprises:
and performing second repetition or second upsampling on the twelfth sequence.
21. The method as recited in claim 19, further comprising:
Modulating the thirteenth sequence to output a fourteenth sequence;
And pre-encoding the fourteenth sequence and outputting a fifteenth sequence.
22. The method of claim 21, wherein the precoding comprises discrete fourier transform precoding or quasi-inverse based precoding.
23. A wake-up signal processing apparatus, comprising:
and the processing unit is used for processing the first sequence and outputting a second sequence.
24. A wake-up signal processing apparatus, comprising:
A processing unit for modulating the first sequence and outputting an eighth sequence; and pre-encoding the eighth sequence to output a ninth sequence.
25. A wake-up signal processing apparatus, comprising:
and the processing unit is used for performing first processing on the first sequence and outputting an eleventh sequence.
26. A network device comprising a processor, a memory and a computer program or instructions stored on the memory, characterized in that the processor executes the computer program or instructions to implement the steps of the method of any one of claims 1-8, 9-13, 14-22.
27. A chip comprising a processor and a communication interface, wherein the processor performs the steps of the method of any of claims 1-8, 9-13, 14-22.
28. A computer readable storage medium, characterized in that it stores a computer program or instructions which, when executed, implement the steps of the method of any one of claims 1-8, 9-13, 14-22.
Priority Applications (2)
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| CN202211380605.9A CN118042562A (en) | 2022-11-04 | 2022-11-04 | Wake-up signal processing method and device and network equipment |
| PCT/CN2023/129672 WO2024094183A1 (en) | 2022-11-04 | 2023-11-03 | Wake-up signal processing method and apparatus, and network device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211380605.9A CN118042562A (en) | 2022-11-04 | 2022-11-04 | Wake-up signal processing method and device and network equipment |
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| WO (1) | WO2024094183A1 (en) |
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| WO2024169986A1 (en) * | 2023-02-17 | 2024-08-22 | 展讯通信（上海）有限公司 | Signal processing method and apparatus, and device |
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| US20160278013A1 (en) * | 2015-03-20 | 2016-09-22 | Qualcomm Incorporated | Phy for ultra-low power wireless receiver |
| US11076351B2 (en) * | 2016-12-14 | 2021-07-27 | Telefonaktiebolaget Lm Ericsson (Publ) | Wake-up signal construction |
| US10743257B2 (en) * | 2017-09-15 | 2020-08-11 | Qualcomm Incorporated | Techniques and apparatuses for wakeup signal transmission |
| CN111373806B (en) * | 2017-11-17 | 2023-09-22 | 上海诺基亚贝尔股份有限公司 | Paging |
| CN113366890B (en) * | 2019-03-29 | 2022-09-23 | 华为技术有限公司 | Wake-up signal sending method and device |
| WO2021031003A1 (en) * | 2019-08-16 | 2021-02-25 | 华为技术有限公司 | Signal transmission and receiving method and device |
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| WO2024169986A1 (en) * | 2023-02-17 | 2024-08-22 | 展讯通信（上海）有限公司 | Signal processing method and apparatus, and device |
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