CN116868635A

CN116868635A - Method, device and storage medium for transmitting power margin

Info

Publication number: CN116868635A
Application number: CN202380009518.9A
Authority: CN
Inventors: 胡子泉; 陶旭华
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2023-05-23
Filing date: 2023-05-23
Publication date: 2023-10-10

Abstract

The disclosure provides a method, a device and a storage medium for transmitting power headroom. The method comprises the following steps: transmitting first information to second user equipment, wherein the first information comprises a power headroom SL-PH of the first user equipment for side uplink communication; wherein the second user equipment communicates with a network device through the first user equipment. In the method disclosed by the disclosure, the first user equipment can send first information to the second user equipment so as to report the SL-PH of the second user equipment in SL communication, thereby providing the second user equipment with power reference in the process of side uplink communication.

Description

Method, device and storage medium for transmitting power margin

Technical Field

The disclosure relates to the technical field of wireless communication, and in particular relates to a method, a device and a storage medium for transmitting power headroom.

Background

In the internet of vehicles scenario, in order to support direct communication between a User Equipment (UE) and a UE, a side link or direct link (SL) communication mode is introduced, and a communication interface between the UE and the UE is a PC5 port. The user equipment may be directly connected to the base station, or may communicate with the base station through another user equipment acting as a relay node, and the communication interface between the user equipment and the base station is a Uu interface.

Disclosure of Invention

The disclosure provides a method, a device and a storage medium for transmitting power headroom.

In a first aspect, the present disclosure provides a method for transmitting a power headroom, performed by a first user equipment, the method comprising:

transmitting first information to second user equipment, wherein the first information comprises a power headroom SL-PH of the first user equipment for side uplink communication;

wherein the second user equipment communicates with a network device through the first user equipment.

In a second aspect, the present disclosure provides a method of receiving a power headroom, performed by a second user equipment, the method comprising:

receiving first information sent by second user equipment, wherein the first information comprises SL-PH of the first user equipment;

In a third aspect, the present disclosure provides a method of transmitting information, performed by a network device, the method comprising:

transmitting third information to the first user equipment, wherein the third information is used for configuring parameters of a power headroom report PHR;

the second user equipment communicates with the network equipment through the first user equipment, and the first user equipment is used for sending information containing SL-PH to the second user equipment.

In a fourth aspect, the present disclosure provides a first communication apparatus comprising:

a transceiver module, configured to send first information to a second user equipment, where the first information includes a power headroom SL-PH for performing side uplink communication by the first user equipment;

In a fifth aspect, the present disclosure provides a second communication apparatus comprising:

a transceiver module, configured to receive first information sent by a second user equipment, where the first information includes SL-PH of the first user equipment;

In a sixth aspect, the present disclosure provides a third communication apparatus comprising:

the receiving and transmitting module is used for sending third information to the first user equipment, wherein the third information is used for configuring parameters of the PHR;

In a seventh aspect, the present disclosure provides a communication device comprising:

One or more processors;

wherein the processor is configured to invoke instructions to cause the communication device to perform the method of the first aspect or to perform the method of the second aspect.

In an eighth aspect, the present disclosure provides a communication system, a first user equipment, a second user equipment, and a network device; wherein,

the first user equipment is configured to perform the method of the first aspect;

the second user equipment is configured to perform the method of the second aspect;

the network device is configured to perform the method of the third aspect.

In a ninth aspect, the present disclosure provides a storage medium storing instructions that,

the instructions, when executed on a communication device, cause the communication device to perform the method as described in the first aspect, or to perform the method as described in the second aspect.

Drawings

The accompanying drawings, which are included to provide a further understanding of embodiments of the disclosure, illustrate and explain the exemplary embodiments of the disclosure and together with the description serve to explain the disclosure, and do not constitute an undue limitation on the embodiments of the disclosure. In the drawings:

the accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the embodiments of the disclosure.

Fig. 1 is a schematic diagram of a wireless communication system architecture according to an embodiment of the present disclosure;

fig. 2 is an interactive schematic diagram of a method for transmitting power headroom according to an embodiment of the present disclosure;

fig. 3 is a flowchart of a method for transmitting a power headroom according to an embodiment of the present disclosure;

fig. 4 is a flowchart of a method of receiving a power headroom provided by an embodiment of the present disclosure;

fig. 5 is a flowchart of a method for transmitting power headroom provided by an embodiment of the present disclosure;

fig. 6a is a schematic diagram of a first communication device shown in accordance with an embodiment of the present disclosure;

fig. 6b is a schematic diagram of a second communication device shown in accordance with an embodiment of the present disclosure;

FIG. 6c is a schematic diagram of a third communication device shown according to an embodiment of the present disclosure;

fig. 7a is a schematic diagram of a communication device shown in accordance with an embodiment of the present disclosure;

fig. 7b is a schematic diagram of a communication device shown in accordance with an embodiment of the present disclosure.

Detailed Description

The embodiment of the disclosure provides a method, a device and a storage medium for transmitting power headroom.

The embodiments of the present disclosure are not intended to be exhaustive, but rather are exemplary of some embodiments and are not intended to limit the scope of the disclosure. In the case of no contradiction, each step in a certain embodiment may be implemented as an independent embodiment, and the steps may be arbitrarily combined, for example, a scheme in which part of the steps are removed in a certain embodiment may also be implemented as an independent embodiment, the order of the steps in a certain embodiment may be arbitrarily exchanged, and further, alternative implementations in a certain embodiment may be arbitrarily combined; furthermore, various embodiments may be arbitrarily combined, for example, some or all steps of different embodiments may be arbitrarily combined, and an embodiment may be arbitrarily combined with alternative implementations of other embodiments.

In the various embodiments of the disclosure, terms and/or descriptions of the various embodiments are consistent throughout the various embodiments and may be referenced to each other in the absence of any particular explanation or logic conflict, and features from different embodiments may be combined to form new embodiments in accordance with their inherent logic relationships.

The terminology used in the embodiments of the disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure.

In the presently disclosed embodiments, elements that are referred to in the singular, such as "a," "an," "the," "said," etc., may mean "one and only one," or "one or more," "at least one," etc., unless otherwise indicated. For example, where an article (article) is used in translation, such as "a," "an," "the," etc., in english, a noun following the article may be understood as a singular expression or as a plural expression.

In the presently disclosed embodiments, "plurality" refers to two or more.

In some embodiments, terms such as "at least one of", "one or more of", "multiple of" and the like may be substituted for each other.

Description modes such as at least one of A, B, C … …, A and/or B and/or C … … include any single case of A, B, C … … and any combination case of any plurality of A, B, C … …, and each case may exist independently; for example, "at least one of A, B, C" includes the cases of a alone, B alone, C, A and B in combination, a and C in combination, B and C in combination, a and B and C in combination; for example, a and/or B includes the case of a alone, a combination of a alone B, A and B.

In some embodiments, "in a case a, in another case B", "in response to a case a", "in response to another case B", and the like, the following technical solutions may be included according to the circumstances: executing a independently of B, i.e., a in some embodiments; b is performed independently of a, i.e., in some embodiments B; a and B are selectively performed, i.e., in some embodiments selected from a and B; both a and B are performed, i.e., a and B in some embodiments. Similar to that described above when there are more branches such as A, B, C.

The prefix words "first", "second", etc. in the embodiments of the present disclosure are only for distinguishing different description objects, and do not limit the location, order, priority, number, content, etc. of the description objects, and the statement of the description object refers to the claims or the description of the embodiment context, and should not constitute unnecessary limitations due to the use of the prefix words. For example, if the description object is a "field", the ordinal words before the "field" in the "first field" and the "second field" do not limit the position or the order between the "fields", and the "first" and the "second" do not limit whether the "fields" modified by the "first" and the "second" are in the same message or not. For another example, describing an object as "level", ordinal words preceding "level" in "first level" and "second level" do not limit priority between "levels". As another example, the number of descriptive objects is not limited by ordinal words, and may be one or more, taking "first device" as an example, where the number of "devices" may be one or more. Furthermore, objects modified by different prefix words may be the same or different, e.g., the description object is "a device", then "a first device" and "a second device" may be the same device or different devices, and the types may be the same or different; for another example, the description object is "information", and the "first information" and the "second information" may be the same information or different information, and the contents thereof may be the same or different.

In some embodiments, "comprising a", "containing a", "for indicating a", "carrying a", may be interpreted as carrying a directly, or as indicating a indirectly.

In some embodiments, terms "responsive to … …", "responsive to determination … …", "in the case of … …", "at … …", "when … …", "if … …", "if … …", and the like may be interchanged.

In some embodiments, terms "greater than", "greater than or equal to", "not less than", "more than or equal to", "not less than", "above" and the like may be interchanged, and terms "less than", "less than or equal to", "not greater than", "less than or equal to", "not more than", "below", "lower than or equal to", "no higher than", "below" and the like may be interchanged.

In some embodiments, an apparatus or the like may be interpreted as an entity, or may be interpreted as a virtual, and the names thereof are not limited to the names described in the embodiments, "apparatus," "device," "circuit," "network element," "node," "function," "unit," "section," "system," "network," "chip system," "entity," "body," and the like may be replaced with each other.

In some embodiments, "access network device (access network device, AN device)", "radio access network device (radio access network device, RAN device)", "Base Station (BS)", "radio base station (radio base station)", "fixed station (fixed station)", "node (node)", "access point (access point)", "transmit point (transmission point, TP)", "Receive Point (RP)", "transmit receive point (transmit/receive point), the terms TRP), panel, antenna array, cell, macrocell, microcell, femtocell, sector, cell group, carrier, component carrier, bandwidth part, BWP, etc. may be replaced with each other.

In some embodiments, "terminal," terminal device, "" user equipment, "" user terminal, "" mobile station, "" mobile terminal, MT) ", subscriber station (subscriber station), mobile unit (mobile unit), subscriber unit (subscriber unit), wireless unit (wireless unit), remote unit (remote unit), mobile device (mobile device), wireless device (wireless device), wireless communication device (wireless communication device), remote device (remote device), mobile subscriber station (mobile subscriber station), access terminal (access terminal), mobile terminal (mobile terminal), wireless terminal (wireless terminal), remote terminal (remote terminal), handheld device (handset), user agent (user agent), mobile client (mobile client), client (client), and the like may be substituted for each other.

In some embodiments, the access network device, core network device, or network device may be replaced with a terminal. For example, the embodiments of the present disclosure may be applied to a configuration in which communication between an access network device, a core network device, or a network device and a terminal is replaced with communication between a plurality of terminals (for example, may also be referred to as device-to-device (D2D), vehicle-to-device (V2X), or the like). In this case, the terminal may have all or part of the functions of the access network device. Further, the language such as "uplink" and "downlink" may be replaced with a language (for example, "side") corresponding to the communication between terminals. For example, uplink channels, downlink channels, etc. may be replaced with side-uplink channels, uplink, downlink, etc. may be replaced with side-downlink channels.

In some embodiments, the terminal may be replaced with an access network device, a core network device, or a network device. In this case, the access network device, the core network device, or the network device may have all or part of the functions of the terminal.

In some embodiments, "acquire," "obtain," "receive," "transmit," "send and/or receive" may be interchangeable, which may be construed as receiving from other principals, acquiring from protocols, processing itself, autonomous implementation, etc. in various meanings.

In some embodiments, terms such as "send," "transmit," "report," "send," "transmit," "send and/or receive," and the like may be used interchangeably.

In some embodiments, "predetermined", "preset" may be interpreted as being predefined in a protocol or the like, or as a preset action by a device or the like.

In some embodiments, determining (determining) may be interpreted as determining, deciding (determining), calculating (calculating), calculating (computing), processing (processing), deriving (determining), investigating (investigating), searching, looking up (locating), retrieving (searching), querying (query), confirming (confirming), receiving (receiving), transmitting (transmitting), inputting (input), outputting (output), accessing (processing), solving (determining), selecting (selecting), selecting (calculating), establishing (determining), comparing (determining), predicting (predicting), expecting (viewing), treating (consider), notifying (communicating), communicating (communicating), forwarding (configuring), reconfiguring (distributing (mapping), assigning (mapping), etc.

In some embodiments, the determination or judgment may be performed by a value (0 or 1) expressed in 1 bit, may be performed by a true-false value (boolean) expressed in true (true) or false (false), or may be performed by a comparison of values (e.g., a comparison with a predetermined value), but is not limited thereto.

In some embodiments, a "network" may be interpreted as an apparatus (e.g., access network device, core network device, etc.) contained in a network.

In some embodiments, "not expected to receive" may be interpreted as not receiving on time domain resources and/or frequency domain resources, or as not performing subsequent processing on data or the like after the data or the like is received; "not expected to transmit" may be interpreted as not transmitting, or may be interpreted as transmitting but not expecting the receiver to respond to the transmitted content.

In some embodiments, the acquisition of data, information, etc. may comply with laws and regulations of the country of locale.

In some embodiments, data, information, etc. may be obtained after user consent is obtained.

Furthermore, each element, each row, or each column in the tables of the embodiments of the present disclosure may be implemented as a separate embodiment, and any combination of elements, any rows, or any columns may also be implemented as a separate embodiment.

Fig. 1 is a schematic architecture diagram of a communication system shown in accordance with an embodiment of the present disclosure.

As shown in fig. 1, the communication system 100 comprises a first user device 101, a second user device 102 and a network device 103.

In some embodiments, the first user device 101 or the second user device 102 comprises, for example: including, but not limited to, at least one of a mobile phone, a wearable device, an internet of things device, an automobile with communication function, a smart car, a tablet computer (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-driving (self-driving), a wireless terminal device in teleoperation (remote medical surgery), a wireless terminal device in smart grid (smart grid), a wireless terminal device in transportation safety (transportation safety), a wireless terminal device in smart city (smart city), a wireless terminal device in smart home (smart home).

In some embodiments, the network device 103 is, for example, a node or a device that accesses a terminal to a wireless network, and the access network device may include at least one of an evolved NodeB (eNB), a next generation evolved NodeB (next generationeNB, ng-eNB), a next generation NodeB (next generation NodeB, gNB), a NodeB (node B, NB), a Home NodeB (HNB), a home NodeB (home evolved nodeB, heNB), a wireless backhaul device, a radio network controller (radio network controller, RNC), a base station controller (base station controller, BSC), a base transceiver station (base transceiver station, BTS), a baseband unit (BBU), a mobile switching center, a base station in a 6G communication system, an Open base station (Open RAN), a Cloud base station (Cloud RAN), a base station in other communication systems, an access node in a Wi-Fi system, but is not limited thereto.

In some embodiments, the technical solutions of the present disclosure may be applied to an Open RAN architecture, where an access network device or an interface in an access network device according to the embodiments of the present disclosure may become an internal interface of the Open RAN, and flow and information interaction between these internal interfaces may be implemented by using software or a program.

In some embodiments, the access network device may be composed of a Central Unit (CU) and a Distributed Unit (DU), where the CU may also be referred to as a control unit (control unit), and the structure of the CU-DU may be used to split the protocol layers of the access network device, where functions of part of the protocol layers are centrally controlled by the CU, and functions of the rest of all the protocol layers are distributed in the DU, and the DU is centrally controlled by the CU, but is not limited thereto.

In some embodiments, the network device 103 may also comprise a core network device or a core network element.

It may be understood that, the communication system described in the embodiments of the present disclosure is for more clearly describing the technical solutions of the embodiments of the present disclosure, and is not limited to the technical solutions provided in the embodiments of the present disclosure, and those skilled in the art may know that, with the evolution of the system architecture and the appearance of new service scenarios, the technical solutions provided in the embodiments of the present disclosure are applicable to similar technical problems.

The embodiments of the present disclosure described below may be applied to the communication system 100 shown in fig. 1, or a part of the main body, but are not limited thereto. The respective bodies shown in fig. 1 are examples, and the communication system may include all or part of the bodies in fig. 1, or may include other bodies than fig. 1, and the number and form of the respective bodies are arbitrary, and the connection relationship between the respective bodies is examples, and the respective bodies may be not connected or may be connected, and the connection may be arbitrary, direct connection or indirect connection, or wired connection or wireless connection.

The embodiments of the present disclosure may be applied to long term evolution (Long Term Evolution, LTE), LTE-Advanced (LTE-a), LTE-Beyond (LTE-B), upper 3G, IMT-Advanced, fourth generation mobile communication system (4th generation mobile communication system,4G)), fifth generation mobile communication system (5th generation mobile communication system,5G), 5G New air (New Radio, NR), future wireless access (Future Radio Access, FRA), new wireless access technology (New-Radio Access Technology, RAT), new wireless (New Radio, NR), new wireless access (New Radio access, NX), future generation wireless access (Future generation Radio access, FX), global System for Mobile communications (GSM (registered trademark)), CDMA2000, ultra mobile broadband (Ultra Mobile Broadband, UMB), IEEE 802.11 (registered trademark), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, ultra WideBand (Ultra-wide bandwidth, UWB), bluetooth (Bluetooth) mobile communication network (Public Land Mobile Network, PLMN, device-D-Device, device-M, device-M, internet of things system, internet of things (internet of things), machine-2, device-M, device-M, internet of things (internet of things), system (internet of things), internet of things 2, device (internet of things), machine (internet of things), etc. In addition, a plurality of system combinations (e.g., LTE or a combination of LTE-a and 5G, etc.) may be applied.

In some embodiments, reporting of power headroom reports (Power Headroom Report, PHR) is supported in the Uu interface, e.g., reporting PHR is supported in a wireless communication link between the UE and the network device 103, i.e., uu link. And a reasonable reporting mode of PHR is also lacking in a communication link based on a PC5 interface, namely, power related information on the PC5 link is lacking, which is not beneficial to limiting the UE behaviors on the PC5 link.

Fig. 2 is an interactive schematic diagram illustrating a method of transmitting power headroom according to an embodiment of the present disclosure. As shown in fig. 2, an embodiment of the present disclosure relates to a method for transmitting a power headroom, for a communication system 100, the method comprising:

in step S2101, the network device 103 transmits third information to the first user device 101.

In some embodiments, the first user equipment 101 receives the third information.

In some embodiments, the third information is used to configure parameters of the power headroom report PHR.

Alternatively, the parameters of the PHR may include: operating parameters of the PHR timer; for example, the period of the PHR timer, the running start time or the start condition.

Alternatively, the first ue 101 may report a Power Headroom (PH) each time the PHR timer times out or expires or ends running.

For example, the first user device 101 reports PHR to the network device 103,

alternatively, the first user equipment 101 performs step S2103 described below. For example, the first user equipment 101 is configured to send information comprising a power headroom (SL-PH) of the side uplink communication to the second user equipment 102. The description of the embodiments described below may be described in detail.

In some embodiments, the first user equipment 101 and the second user equipment 102 are SL UEs.

In some embodiments, the first user equipment 101 communicates with the network equipment 103 based on a Uu interface, and the second user equipment 102 communicates with the first user equipment 101 based on a side-link SL or PC5 interface.

The first user equipment 101, as a Relay node, may also be referred to as a Relay UE (Relay UE); the second user equipment 102 is not directly connected to the network equipment 103, but communicates with the network equipment 103 through the first user equipment 101, and the second user equipment 102 may also be called a Remote UE (Remote UE), and the communication manner may be called a relay communication (U2 Nrelay).

In step S2102, the first user equipment 101 sends second information to the second user equipment 102.

In some embodiments, the second user device 102 receives the second information.

In some embodiments, the second information is used to indicate whether the first user equipment 101 supports the first capability.

In some embodiments, the first capability is a capability to support reporting SL-PH.

In some embodiments, the second information may occupy 1 bit. When the value of the 1 bit is 1, the first user equipment 101 supports the first capability; when the value of 1 bit is 0, it indicates that the first user equipment 101 does not support the first capability.

In an example, when the first user equipment 101 supports the first capability, the following step S2103 is performed, which can be described in detail in the following embodiments.

In step S2103, the first user equipment 101 transmits first information to the second user equipment 102.

In some embodiments, the first information comprises a power headroom SL-PH for the side-uplink communication by the first user equipment 101.

In some embodiments, the first information includes at least one of:

SL-PH corresponding to each of the plurality of carriers;

SL-PH corresponding to each link in a plurality of links;

and each sub-band of the plurality of sub-bands corresponds to the SL-PH.

Optionally, in determining the SL-PH, the first user equipment 101 may determine, for each carrier, the SL-PH corresponding to the carrier; the SL-PH corresponding to each link can also be determined for each link; alternatively, for each sub-band, the SL-PH corresponding to that sub-band is determined.

In some embodiments, the SL-PH is the difference between the maximum transmit power of the first user equipment 101 and the first transmit power for the first duration; the first transmitting power is uplink transmitting power corresponding to the first time length.

Optionally, the maximum transmission power of the first user equipment 101 is a transmission power value related to the UE factory capability.

Optionally, the first transmission power is an existing transmission power or a current transmission power of the first user equipment 101 in the first duration. Wherein the first user equipment 101 may determine the current transmit power in the first duration according to a protocol defined manner.

In an example, in SL communication, the SL-PH is the difference between the maximum transmit power of the first user equipment 101 and the current transmit power over 1 subframe. The first ue 101 may report the difference between the estimated current transmit power and the maximum transmit power to report how much transmit power is left available for the first ue 101.

In this example, the first transmission power may be, for example: the first user equipment 101 transmits the current transmit power of the physical side uplink shared channel (Physical Sidelink Control Channel, PSSCH) for a first duration.

In some embodiments, the first duration is protocol defined, or network device 103 configured.

In some embodiments, the first duration is a set point. The set point is configured, for example, by a protocol definition or by the network device 103.

Optionally, the first duration is one slot (slot), or the first duration is one subframe (subframe).

In some embodiments, the start time of the first duration is aligned with a boundary of a symbol (symbol).

Alternatively, the symbol may be any symbol. Or, the start time of the first duration is located at the start boundary or the end boundary of any symbol.

In some embodiments, the first information further comprises at least one of:

a first duration;

maximum transmit power.

Optionally, the first information includes a first duration, which may include at least one of:

a start time of the first duration, an end time of the first duration, and a duration of the first duration.

For example, the first information includes a start time of a first duration.

The duration of the first duration may be: the number of time slots for which the first time duration is continuous, or the number of symbols for which the first time duration is continuous, or the period for which the first time duration is continuous.

In some embodiments, the second user device 102 receives the first information.

Optionally, after receiving the first information, the second ue 101 may learn at least one of the SL PH, the starting time of the first duration, and the maximum transmit power reported by the first ue 101.

In some embodiments, the first user equipment 101 may report the first information by multicast or unicast.

In an example, step S2103 may employ step S2103-1:

in step S2103-1, the first user equipment 101 multicasts the first information to the plurality of second user equipment 102.

In this example, in the multicast mode, the first user equipment 101 may send the first information to the plurality of second user equipments 102 at a time, for example, the plurality of second user equipments 102 may be a group of user equipments having the same service characteristics.

In another example, step S2103 may employ step S2103-2:

in step S2103-2, the first user equipment 101 unicasts the first information to the second user equipment 102.

In this example, in the unicast mode, the first user equipment 101 may send the first information to the specific second user equipment 102 at a time.

In some embodiments, the first user equipment 101 may retransmit the first information when a certain condition is met. For example, the first user equipment 101 supports the first capability.

In an example, the method includes step S2102, where step S2103, S2103-1 or S2103-2 is performed when the first user equipment 101 supports the first capability. The first capability is a capability for supporting reporting SL-PH.

In some embodiments, the method comprises step S2101, the first user equipment 101 after receiving the third information, performing step S2103, S2103-1 or S2103-2.

In step S2104, the second user equipment 102 performs selection and reselection of the first user equipment 101 according to the first information.

In some embodiments, the second ue 102 may learn the SL PH of the first ue 101 according to the received first information.

In some embodiments, during the selection and reselection of the first user equipment 101 by the second user equipment 102, i.e. during the selection and reselection of the relay UE, the second user equipment 102 needs to measure the reference signal of a different first user equipment 101.

Optionally, the second user equipment 102 measures the reference signal broadcasted by the first user equipment 101 and/or measures the reference signal unicast or multicast by the first user equipment 101.

For example, the first user equipment 101 unicasts a PSSCH-demodulation reference signal (Demodulation Reference Signal, DMRS) and/or a physical side-link control channel (Physical Sidelink Control Channel, PSCCH) -DMRS, and the second user equipment 102 performs measurement on the unicast PSSCH-DMRS and/or PSCCH-DMRS to obtain a first measurement result. The first measurement result may include a reference signal received power (Reference Signal Received Power, RSRP) of the unicast PSSCH-DMRS and/or PSCCH-DMRS, and may be denoted as SL-RSRP.

For another example, the first ue 101 broadcasts the PSSCH-DMRS and/or PSCCH-DMRS, and the second ue 102 measures the broadcasted PSSCH-DMRS and/or PSCCH-DMRS to obtain a second measurement result. Wherein the second measurement result may include an RSRP of the broadcasted PSSCH-DMRS and/or PSCCH-DMRS, and the second measurement result may be denoted as SD-RSRP.

It can be understood that the power control between unicast or multicast and broadcast is different, or the resource pools corresponding to the reference signals in the first measurement result and the reference signals in the second measurement result are different, so in relay communication of the related protocol, the transmission power of the reference signals transmitted by the first user equipment 102 in two ways is different, and the second user equipment 102 cannot select and reselect the relay UE based on the comparison between the SL-RSRP and the SD-RSRP, which limits the communication of the second user equipment 102 in the relay scenario.

In some embodiments, during the measurement, the second ue 102 may learn the SL PH of the different first ues 101, so that the transmit power used by each first ue 101 in transmitting the reference signal may be learned. Therefore, the second UE 102 may reasonably select and reselect the relay UE according to the measurement result and the transmission power of the first UE 101, for example, select the first UE 101 with better transmission quality, compared with different measurement results.

In some embodiments, steps S2101, S2102, and S2104 are optional.

In some embodiments, the method includes step S2103.

In some embodiments, the method includes steps S2103 and S2104.

In some embodiments, the method includes steps S2101 and S2103.

In some embodiments, the method includes steps S2102 and S2103.

In some embodiments, the method includes steps S2101, S2102, and S2103.

In some embodiments, the method includes steps S2101, S2103, and S2104.

In some embodiments, the method includes steps S2102, S2103, and S2104.

In some embodiments, the method includes steps S2101, S2102, S2103, and S2104.

In some embodiments, the order of steps S2101 and S2102 is merely illustrative and may be interchanged.

In some embodiments, step S2103 in the above embodiments may also be replaced with step S2103-1 or S2103-2.

In the embodiment of the present disclosure, the first ue 101 may report its SL-PH in SL communication to the second ue 102, so as to provide a reference for side uplink power adjustment in the internet of vehicles environment, so as to perform reasonable power control in the internet of vehicles environment. After knowing the SL-PH, the second UE 102 is beneficial to more accurately perform the relay UE selection and reselection process, so as to select an appropriate relay UE to perform relay communication, thereby improving the quality of relay communication.

Illustratively, in SL communication, SL communication resources between UEs may be determined by themselves between UEs.

Fig. 3 is a flow chart illustrating a method of transmitting power headroom according to an embodiment of the present disclosure. As shown in fig. 3, an embodiment of the present disclosure relates to a method for transmitting a power headroom, for a first user equipment 101, the method comprising:

in step S3101, the first user device 101 receives the third information sent by the network device 103.

In some embodiments, the implementation of step S3101 may refer to the related implementation of step S2101, which is not described herein.

In step S3102, the first user equipment 101 transmits the second information to the second user equipment 102.

In some embodiments, the implementation of step S3102 may refer to the related implementation of step S2102, which is not described herein.

In step S3103, the first user equipment 101 transmits the first information to the second user equipment 102.

In some embodiments, the implementation of step S3103 may refer to the related implementation of step S2103, which is not described herein.

In some embodiments, the first information comprises a power headroom SL-PH for the first user equipment 101 for side-uplink communication; wherein the second user device 102 communicates with the network device through the first user device 101.

In some embodiments, the first user device 101 sends the first information to the second user device 102 when the first user device 101 supports the first capability.

In some embodiments, after the first user device 101 receives the third information, the first user device 101 sends the first information to the second user device 102.

In some embodiments, the first information includes at least one of:

SL-PH corresponding to each of the plurality of carriers;

SL-PH corresponding to each link in a plurality of links;

and each sub-band of the plurality of sub-bands corresponds to the SL-PH.

Optionally, the first duration is protocol defined, or network device configured.

Optionally, the first duration is a set value.

In some embodiments, the start time of the first duration is aligned with a boundary of the symbol.

In some embodiments, the first information further comprises at least one of:

a first duration;

maximum transmit power.

Optionally, the first information includes: start time of the first duration.

In some embodiments, step S3103 may employ step S3103-1 or step S3103-2, wherein:

in step S3103-1, the first user equipment 101 multicasts the first information to the plurality of second user equipments 102.

Optionally, the embodiment of step S3103-1 may refer to the related embodiment of step S2103-1, which is not described herein.

In step S3103-2, the first user equipment 101 unicasts the first information to the second user equipment 102.

Optionally, the embodiment of step S3103-2 may refer to the related embodiment of step S2103-2, which is not described herein.

In some embodiments, steps S3101 and S3102 are optional.

In some embodiments, the method includes step S3103.

In some embodiments, the method includes steps S3101 and S3103.

In some embodiments, the method includes steps S3102 and S3103.

In some embodiments, the method includes steps S3101, S3102, and S3103.

In some embodiments, the order of steps S3101 and S3102 is merely illustrative and may be exchanged.

In the embodiment of the present disclosure, the first ue 101 may send first information to the second ue 102 to report the SL-PH of itself in the SL communication to the second ue 102, so as to provide the power reference in the side uplink communication procedure for the second ue 102.

Fig. 4 is a flow chart illustrating a method of receiving a power headroom according to an embodiment of the present disclosure. As shown in fig. 4, an embodiment of the present disclosure relates to a method for receiving a power headroom, for a second user equipment 102, the method comprising:

in step S4101, the second user equipment 102 receives the second information sent by the first user equipment 101.

In some embodiments, the implementation of step S4101 may refer to the related implementation of steps S2102 and S3102, which are not described herein.

In step S4102, the second user equipment 102 receives the first information sent by the first user equipment 101.

In some embodiments, the implementation of step S4102 may refer to the related implementation of steps S2103 and S3103, which are not described herein.

In some embodiments, the first information comprises a SL-PH of the first user equipment; wherein the second user device communicates with the network device through the first user device.

In some embodiments, the second user device 102 receives the first information sent by the first user device 101 while the first user device 101 supports the first capability.

In some embodiments, the first information includes at least one of:

SL-PH corresponding to each of the plurality of carriers;

SL-PH corresponding to each link in a plurality of links;

and each sub-band of the plurality of sub-bands corresponds to the SL-PH.

Optionally, the first duration is a set value.

In some embodiments, the first information further comprises at least one of:

a first duration;

maximum transmit power.

Optionally, the first information includes: start time of the first duration.

In some embodiments, step S4102 may employ step S4102-1 or step S4102-2, wherein:

in step S4102-1, the second user equipment 102 receives first information multicast by the first user equipment 101.

Optionally, the embodiment of step S4102-1 can be referred to the related embodiments of steps S2103-1 and S3103-1, and will not be described here.

In step S4102-2, the second user equipment 102 receives first information unicast by the first user equipment 101.

Optionally, the embodiment of step S4102-2 can be referred to the related embodiments of steps S2103-2 and S3103-2, and will not be described here.

In step S4103, the second user equipment 102 performs selection and reselection of the first user equipment 101 according to the first information.

In some embodiments, the implementation of step S4103 may refer to the related implementation of step S2104, which is not described herein.

In some embodiments, steps S4101 and S4103 are optional.

In some embodiments, the method includes step S4102.

In some embodiments, the method includes steps S4101 and S4102.

In some embodiments, the method includes steps S4102 and S4103.

In some embodiments, the method includes steps S4101, S4102, and S4103.

In the embodiment of the present disclosure, the second ue 102 receives the first information sent by the first ue 101 to obtain the SL-PH corresponding to the first ue 101. After knowing the SL-PH, the second UE 102 is beneficial to more accurately perform the relay UE selection and reselection process, so as to select an appropriate relay UE to perform relay communication, thereby improving the quality of relay communication.

Fig. 5 is a flow chart illustrating a method of transmitting power headroom according to an embodiment of the present disclosure. As shown in fig. 5, an embodiment of the present disclosure relates to a method for transmitting a power headroom, for a network device 103, the method comprising:

in step S5101, the network device 103 transmits third information to the first user device 101.

In some embodiments, the implementation of step S5101 may refer to the related implementations of steps S2101 and S3101, which are not described herein.

In some embodiments, the second user equipment 102 communicates with the network equipment 103 through the first user equipment 101, the first user equipment 101 being configured to send information containing SL-PH to the second user equipment 102. Related embodiments may be found in the description of related embodiments in fig. 2-4.

In the embodiment of the present disclosure, the network device 103 sends third information to the first user device 101 to configure PHR reporting related parameters for the first user device 101, so that the first user device 101 may report the first information to the second user device 102 according to the configuration of the network device 103, and provide power references in a side uplink communication process for the second user device 102.

To facilitate an understanding of the disclosed embodiments, the following specific examples are set forth:

example one:

the embodiment of the disclosure provides a measurement method for a specific type of terminal.

Alternatively, the specific type of terminal may be a Relay UE;

alternatively, the specific type of terminal may be a Sidelink UE.

Example two:

the terminal determines a power headroom (SL-PH), which is defined as the difference between the maximum transmit power of the terminal and the existing transmit power, such as the transmit power of the PSSCH, within a specific time frame. The SL-PH determination may be per carrier, per link, or per subband.

In some embodiments, the particular time range corresponds to the first time period in the previous embodiments.

Example three:

on the basis of example two, the specific time range may be preconfigured by the network or may be agreed by a protocol.

Wherein the starting position moment of the specific time range should be aligned with the symbol boundary.

Alternatively, the specific time range may be a slot or a subframe.

Example four:

based on the second example, the reporting form for the SL-PH may be multicast or unicast, and the content may include at least one of the following:

SL-PH, a specific time range (which may include the start time position), maximum transmit power value.

In the embodiments of the present disclosure, some or all of the steps and alternative implementations thereof may be arbitrarily combined with some or all of the steps in other embodiments, and may also be arbitrarily combined with alternative implementations of other embodiments.

The embodiments of the present disclosure also provide an apparatus for implementing any of the above methods, for example, an apparatus is provided, where the apparatus includes a unit or a module configured to implement each step performed by the terminal in any of the above methods. As another example, another apparatus is provided that includes a unit or module configured to implement steps performed by a network device (e.g., an access network device, a core network function node, a core network device, etc.) in any of the above methods.

It should be understood that the division of each unit or module in the above apparatus is merely a division of a logic function, and may be fully or partially integrated into one physical entity or may be physically separated when actually implemented. Furthermore, units or modules in the apparatus may be implemented in the form of processor-invoked software: the device comprises, for example, a processor, which is connected to a memory, in which instructions are stored, the processor calling the instructions stored in the memory to implement any of the above methods or to implement the functions of the units or modules of the device, wherein the processor is, for example, a general-purpose processor, such as a central processing unit (Central Processing Unit, CPU) or microprocessor, and the memory is a memory within the device or a memory external to the device. Alternatively, the units or modules in the apparatus may be implemented in the form of hardware circuits, and part or all of the functions of the units or modules may be implemented by designing hardware circuits, which may be understood as one or more processors; for example, in one implementation, the hardware circuit is an application-specific integrated circuit (ASIC), and the functions of some or all of the units or modules are implemented by designing the logic relationships of elements in the circuit; for another example, in another implementation, the above hardware circuit may be implemented by a programmable logic device (programmable logic device, PLD), for example, a field programmable gate array (Field Programmable Gate Array, FPGA), which may include a large number of logic gates, and the connection relationship between the logic gates is configured by a configuration file, so as to implement the functions of some or all of the above units or modules. All units or modules of the above device may be realized in the form of invoking software by a processor, or in the form of hardware circuits, or in part in the form of invoking software by a processor, and in the rest in the form of hardware circuits.

In the disclosed embodiment, the processor is a circuit with signal processing capability, and in one implementation, the processor may be a circuit with instruction reading and running capability, such as a central processing unit (Central Processing Unit, CPU), microprocessor, graphics processor (graphics processing unit, GPU) (which may be understood as a microprocessor), or digital signal processor (digital signal processor, DSP), etc.; in another implementation, the processor may implement a function through a logical relationship of hardware circuits that are fixed or reconfigurable, e.g., a hardware circuit implemented as an application-specific integrated circuit (ASIC) or a programmable logic device (programmable logic device, PLD), such as an FPGA. In the reconfigurable hardware circuit, the processor loads the configuration document, and the process of implementing the configuration of the hardware circuit may be understood as a process of loading instructions by the processor to implement the functions of some or all of the above units or modules. Furthermore, a hardware circuit designed for artificial intelligence may be used, which may be understood as an ASIC, such as a neural network processing unit (Neural Network Processing Unit, NPU), tensor processing unit (Tensor Processing Unit, TPU), deep learning processing unit (Deep learning Processing Unit, DPU), etc.

Fig. 6a is a schematic structural diagram of a first communication device according to an embodiment of the present disclosure. As shown in fig. 6a, the first communication device includes: a transceiver module 6101, where the transceiver module 6101 is configured to send first information to the second ue, where the first information includes a power headroom SL-PH for the first ue to perform side uplink communication; wherein the second user device communicates with the network device through the first user device.

Optionally, the transceiver module 6101 is configured to perform steps related to message transmission and reception performed by the first user equipment 101 in any of the above methods, which are not described herein.

Optionally, the first communication device further comprises: the processing module 6102, where the processing module 6102 is configured to execute steps related to message processing executed by the first user equipment 101 in any of the above methods, which are not described herein.

Fig. 6b is a schematic structural diagram of a second communication device according to an embodiment of the present disclosure. As shown in fig. 6b, the second communication device includes: the transceiver module 6201 is configured to receive first information sent by a second user equipment, where the first information includes SL-PH of the first user equipment; wherein the second user device communicates with the network device through the first user device.

Optionally, the transceiver module 6201 is configured to perform steps related to message transceiving performed by the second user equipment 102 in any of the above methods, which are not described herein.

Optionally, the first communication device further comprises: the processing module 6202, the processing module 6202 is configured to perform the steps related to message processing performed by the second user equipment 102 in any of the above methods, which are not described herein.

Fig. 6c is a schematic structural diagram of a third communication device provided in an embodiment of the present disclosure. As shown in fig. 6c, the third communication device includes: the transceiver module 6301, the transceiver module 6301 is configured to send third information to the first user equipment, where the third information is used to configure parameters of the power headroom report PHR; the second user equipment communicates with the network equipment through the first user equipment, and the first user equipment is used for sending information containing SL-PH to the second user equipment.

Optionally, the transceiver module 6301 is configured to perform steps related to the transceiving performed by the network device 103 in any of the above methods, which are not described herein.

Optionally, the third communication device further includes: the processing module 6302, where the processing module 6302 is configured to perform steps related to message processing performed by the network device 103 in any one of the above methods, which are not described herein.

Fig. 7a is a schematic structural diagram of a communication device 7100 provided in an embodiment of the present disclosure. The communication device 7100 may be a network device (e.g., an access network device, a core network device, etc.), a terminal (e.g., a user device, etc.), a chip system, a processor, etc. that supports the network device to implement any of the above methods, or a chip, a chip system, a processor, etc. that supports the terminal to implement any of the above methods. The communication device 7100 may be used to implement the methods described in the above method embodiments, and may be referred to in particular in the description of the above method embodiments.

As shown in fig. 7a, the communication device 7100 includes one or more processors 7101. The processor 7101 may be a general-purpose processor or a special-purpose processor, etc., and may be, for example, a baseband processor or a central processing unit. The baseband processor may be used to process communication protocols and communication data, and the central processor may be used to control communication devices (e.g., base stations, baseband chips, terminal devices, terminal device chips, DUs or CUs, etc.), execute programs, and process data for the programs. The processor 7101 is operable to invoke instructions to cause the communication device 7100 to perform any of the above methods.

In some embodiments, the communication device 7100 also includes one or more memories 7102 for storing instructions. Alternatively, all or part of the memory 7102 may be external to the communication device 7100.

In some embodiments, the communication device 7100 also includes one or more transceivers 7103. When the communication device 7100 includes one or more transceivers 7103, communication steps such as transmission and reception in the above method are performed by the transceivers 7103, and other steps are performed by the processor 7101.

In some embodiments, the transceiver may include a receiver and a transmitter, which may be separate or integrated. Alternatively, terms such as transceiver, transceiver unit, transceiver circuit, etc. may be replaced with each other, terms such as transmitter, transmitter circuit, etc. may be replaced with each other, and terms such as receiver, receiving unit, receiver, receiving circuit, etc. may be replaced with each other.

Optionally, the communication device 7100 further comprises one or more interface circuits 7104, the interface circuits 7104 being connected to the memory 7102, the interface circuits 7104 being operable to receive signals from the memory 7102 or other means, and being operable to transmit signals to the memory 7102 or other means. For example, the interface circuit 7104 may read an instruction stored in the memory 7102 and send the instruction to the processor 7101.

The communication device 7100 in the above embodiment description may be a network device or a terminal, but the scope of the communication device 7100 described in the present disclosure is not limited thereto, and the structure of the communication device 7100 may not be limited by fig. 7 a. The communication device may be a stand-alone device or may be part of a larger device. For example, the communication device may be: 1) A stand-alone integrated circuit IC, or chip, or a system-on-a-chip or subsystem; (2) A set of one or more ICs, optionally including storage means for storing data, programs; (3) an ASIC, such as a Modem (Modem); (4) modules that may be embedded within other devices; (5) A receiver, a terminal device, an intelligent terminal device, a cellular phone, a wireless device, a handset, a mobile unit, a vehicle-mounted device, a network device, a cloud device, an artificial intelligent device, and the like; (7) others, and so on.

Fig. 7b is a schematic structural diagram of a chip 7200 provided by an embodiment of the disclosure. For the case where the communication device 7100 may be a chip or a chip system, reference may be made to the schematic structural diagram of the chip 7200 shown in fig. 7b, but is not limited thereto. The chip 7200 includes one or more processors 7201, the processors 7201 for invoking instructions to cause the chip 7200 to perform any of the above methods.

In some embodiments, the chip 7200 further includes one or more interface circuits 7202, the interface circuits 7202 being coupled to the memory 7203, the interface circuits 7202 being operable to receive signals from the memory 7203 or other devices, the interface circuits 7202 being operable to transmit signals to the memory 7203 or other devices. For example, the interface circuit 7202 may read instructions stored in the memory 7203 and send the instructions to the processor 7201. Alternatively, the terms interface circuit, interface, transceiver pin, transceiver, etc. may be interchanged.

In some embodiments, the chip 7200 further includes one or more memories 7203 for storing instructions. Alternatively, all or a portion of memory 7203 may be external to chip 7200.

The present disclosure also provides a storage medium having instructions stored thereon that, when executed on a communication device 7100, cause the communication device 7100 to perform any of the methods described above. Optionally, the storage medium is an electronic storage medium. Alternatively, the storage medium described above is a computer-readable storage medium, but is not limited thereto, and it may be a storage medium readable by other devices. Alternatively, the above-described storage medium may be a non-transitory (non-transitory) storage medium, but is not limited thereto, and it may also be a transitory storage medium.

The present disclosure also provides a program product which, when executed by a communication device 7100, causes the communication device 7100 to perform any of the above methods. Optionally, the above-described program product is a computer program product.

The present disclosure also provides a computer program which, when run on a computer, causes the computer to perform any of the above methods.

Industrial applicability

In the method disclosed by the disclosure, the first user equipment can send first information to the second user equipment so as to report the SL-PH of the second user equipment in SL communication, thereby providing the second user equipment with power reference in the process of side uplink communication.

Claims

1. A method of transmitting a power headroom performed by a first user equipment, the method comprising:

2. The method of claim 1, wherein,

the SL-PH is the difference value between the maximum transmitting power and the first transmitting power of the first user equipment in the first duration;

The first transmitting power is uplink transmitting power corresponding to the first time length.

3. The method of claim 2, wherein,

the first duration is protocol defined or configured by the network device.

4. The method of claim 2, wherein,

the first duration is a set value.

5. The method of claim 2, wherein,

the start time of the first duration is aligned with a boundary of a symbol.

6. The method of claim 2, wherein the first information further comprises at least one of:

the first duration;

the maximum transmit power.

7. The method of claim 6, wherein the first information comprises:

the start time of the first duration.

8. The method according to any of claims 1 to 7, wherein the sending the first information to the second user equipment comprises:

multicasting the first information to a plurality of the second user equipments; or,

unicast the first information to the second user device.

9. The method of any of claims 1 to 7, wherein the first information comprises at least one of:

the SL-PH corresponding to each carrier in a plurality of carriers;

The SL-PH corresponding to each link in a plurality of links;

and the SL-PH corresponding to each sub-band in the plurality of sub-bands.

10. The method according to claim 1 to 7, wherein,

the first user equipment supports a first capability, wherein the first capability is a capability for supporting reporting the SL-PH.

11. The method of claim 10, wherein the method further comprises:

and sending second information to the second user equipment, wherein the second information is used for indicating whether the first user equipment supports the first capability.

12. The method according to any of claims 1 to 7, wherein the sending the first information to the second user equipment comprises:

receiving third information sent by network equipment, wherein the third information is used for configuring parameters of a Power Headroom Report (PHR);

and after receiving the third information, sending the first information to the second user equipment.

13. A method of receiving a power headroom performed by a second user equipment, the method comprising:

14. The method of claim 13, wherein,

the SL-PH is the difference value between the maximum transmitting power and the first transmitting power of the user equipment in the first duration;

15. The method of claim 14, wherein,

the first duration is protocol defined or configured by the network device.

16. The method of claim 14, wherein,

the first duration is a set value.

17. The method of claim 14, wherein,

the start time of the first duration is aligned with a boundary of a symbol.

18. The method of claim 14, wherein the first information further comprises at least one of:

the first duration;

the maximum transmit power.

19. The method of claim 18, wherein the first information comprises:

the start time of the first duration.

20. The method according to any of claims 13 to 19, wherein the receiving the first information sent by the second user equipment comprises:

receiving the first information multicast by the first user equipment; or,

and receiving the first information unicast by the first user equipment.

21. The method of any of claims 13 to 19, wherein the first information comprises at least one of:

the SL-PH corresponding to each carrier in a plurality of carriers;

the SL-PH corresponding to each link in a plurality of links;

and the SL-PH corresponding to each sub-band in the plurality of sub-bands.

22. The method of any one of claim 13 to 19, wherein,

23. The method of claim 22, wherein,

and receiving second information sent by the first user equipment, wherein the second information is used for indicating whether the first user equipment supports the first capability.

24. A method of transmitting a power headroom performed by a network device, the method comprising:

25. A first communication device, comprising:

26. A second communication device, comprising:

the receiving and transmitting module is used for receiving first information sent by the second user equipment, wherein the first information comprises SL-PH of the first user equipment;

27. A third communication device, comprising:

28. A communication device, comprising:

one or more processors;

wherein the processor is configured to invoke instructions to cause the communication device to perform the method of any of claims 1 to 12, or to perform the method of any of claims 13 to 23, or to perform the method of claim 24.

29. A communication system, comprising:

the system comprises first user equipment, second user equipment and network equipment; wherein,

The first user equipment being configured to perform the method of any one of claims 1 to 12;

the second user equipment being configured to perform the method of any of claims 13 to 23;

the network device configured to perform the method of claim 24.

30. A storage medium having instructions stored thereon,

the instructions, when executed on a communication device, cause the communication device to perform the method of any one of claims 1 to 12, or to perform the method of any one of claims 13 to 23, or to perform the method of claim 24.