CN115801212A - Uplink and downlink time slot ratio indication method and device applied to carrier aggregation - Google Patents
Uplink and downlink time slot ratio indication method and device applied to carrier aggregation Download PDFInfo
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- CN115801212A CN115801212A CN202211438212.9A CN202211438212A CN115801212A CN 115801212 A CN115801212 A CN 115801212A CN 202211438212 A CN202211438212 A CN 202211438212A CN 115801212 A CN115801212 A CN 115801212A
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Abstract
The application discloses a method for indicating uplink and downlink time slot ratio in a wireless communication system, which comprises the following steps: the base station dynamically selects the carrier for sending the uplink and downlink time slot proportioning signaling according to the service quality requirement of the sending service, the user priority and the carrier load, and implicitly indicates the uplink and downlink time slot proportioning of other carriers through a demodulation reference signal in a physical downlink shared channel; the terminal blindly detects the carrier sending the uplink and downlink time slot matching signaling, and determines the uplink and downlink time slot matching of other carriers according to the demodulation reference signal in the physical downlink shared channel.
Description
Technical Field
The present invention relates to a wireless signal processing technology, and more particularly, to a method and an apparatus for indicating uplink and downlink (hereinafter referred to as uplink and downlink) timeslot proportion applied to carrier aggregation in a 5G system.
Background
Carrier Aggregation (CA) is defined by the third Generation Partnership Project (3 GPP), and a User Equipment (UE) may simultaneously connect multiple carriers for uplink and downlink transmission, so as to improve throughput.
In the 5G New Radio (NR) standard, three indication forms of the uplink and downlink timeslot ratios are defined: 1) Configuring through a Radio Resource Control (RRC) message; 2) Configuring by a Media Access Control (MAC); 3) The configuration is performed through Downlink Control Information (DCI). The slot (timeslot) level uplink and downlink timeslot proportion adjustment can be realized through DCI configuration. The uplink and downlink time slot ratio indication is sent independently on each carrier, and the uplink and downlink time slot ratio of the carrier is indicated. The user terminal detects the up and down time slot ratio indication information on each carrier, if the detection is successful, the corresponding up and down time slot ratio adjustment and data transmission are carried out.
Disclosure of Invention
In view of this, the present invention provides the following technical solutions:
1. a signal processing method in a wireless communication system is applied to the transmission of uplink and downlink time slot ratio indication, and is characterized in that:
the base station dynamically selects the carrier for sending the uplink and downlink time slot proportioning signaling according to the service quality requirement of the sending service, the user priority and the carrier load, and implicitly indicates the uplink and downlink time slot proportioning of other carriers through a demodulation reference signal in a physical downlink shared channel;
the terminal determines the carrier sending the uplink and downlink time slot ratio signaling through blind detection, and determines the uplink and downlink time slot ratio of other carriers according to the demodulation reference signal in the physical downlink shared channel.
2. The base station of claim 1 dynamically selects the carrier for sending the uplink and downlink timeslot configuration signaling according to the qos requirement of the service, the user priority and the carrier load, wherein the base station dynamically selects the carrier for sending the uplink and downlink timeslot configuration signaling according to the weighted sum of the qos requirement of the service, the user priority and the carrier load.
3. The quality of service requirement of claim 1, comprising: latency, throughput and reliability.
4. The demodulation reference signal in the physical downlink shared channel according to claim 1, comprising: the time-frequency domain position and sequence of the reference signal are demodulated.
5. The terminal according to claim 1, wherein the terminal determines the carrier for sending the uplink and downlink timeslot configuration signaling through blind detection, and is characterized in that the terminal determines the carrier for sending the uplink and downlink timeslot configuration signaling according to a control channel blind detection rule.
6. A signal processing system in wireless communication system is applied to the transmission of the ratio indication of uplink and downlink time slots, the system at least comprises a base station and a terminal, and is characterized in that:
the base station dynamically selects the carrier for sending the uplink and downlink time slot proportioning signaling according to the service quality requirement of the sending service, the user priority and the carrier load, and implicitly indicates the uplink and downlink time slot proportioning of other carriers through a demodulation reference signal in a physical downlink shared channel;
the terminal determines the carrier sending the uplink and downlink time slot ratio signaling through blind detection, and determines the uplink and downlink time slot ratio of other carriers according to the demodulation reference signal in the physical downlink shared channel.
As can be seen from the foregoing technical solutions, compared with the prior art, an embodiment of the present invention discloses a method and an apparatus for processing a signal in a wireless communication system, where the method includes: the base station dynamically selects the carrier for sending the uplink and downlink time slot proportioning signaling according to the service quality requirement of the sending service, the user priority and the carrier load, and implicitly indicates the uplink and downlink time slot proportioning of other carriers through a demodulation reference signal in a physical downlink shared channel; the terminal blindly detects the carrier sending the uplink and downlink time slot matching signaling, and determines the uplink and downlink time slot matching of other carriers according to the demodulation reference signal in the physical downlink shared channel.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a flowchart of a processing method for indicating the ratio of uplink and downlink timeslots according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a base station implicitly indicating the uplink and downlink timeslot ratios of other carriers according to a demodulation reference signal in a physical downlink shared channel according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a base station implicitly indicating the uplink and downlink timeslot ratios of other carriers by using a demodulation reference signal mode according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a base station dynamically selecting a carrier for sending uplink and downlink timeslot ratios and implicitly indicating uplink and downlink timeslot ratios of other carriers by using a demodulation reference signal mode thereof, according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of an uplink and downlink timeslot matching processing unit (transmission) disclosed in the embodiment of the present invention;
fig. 6 is a schematic structural diagram of an uplink and downlink timeslot matching processing unit (receiving) according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Fig. 1 is a flowchart of a processing method for indicating uplink and downlink timeslot allocation according to an embodiment of the present invention. Referring to fig. 1, the method includes:
step 101: the base station dynamically selects the carrier for sending the uplink and downlink time slot ratio signaling according to the service quality requirement of the sending service, the user priority and the carrier load, and indicates the uplink and downlink time slot ratio of the selected carrier. The carrier may be selected according to a weighted sum of quality of service requirements, user priority and carrier load. The dynamic adjustment of the ratio of the uplink time slot and the downlink time slot (slot) can be realized. It is assumed that there are three carriers for carrier aggregation, carrier 1 (QoS =10, priority =10, carrier load = 30%), carrier 2 (QoS =20, priority =20, carrier load = 50%), and carrier 3 (QoS =100, priority =100, carrier load = 50%). Determining the carrier on which the uplink and downlink time slot matching signaling is sent according to the following weighted sum formula,
w = sum (QoS × conf1 + Prio × conf2 + Load × conf3 × 100) formula 1;
where W is the weight, qoS is the QoS requirement parameter (range 0-100), prio is the user priority parameter (range 0-100), load is the carrier Load parameter (range 0-100%), conf1, conf2 and conf3 are coefficients and are all equal to 1. And the base station selects the carrier with the maximum W value to send the uplink and downlink time slot proportioning signaling. According to the above assumption, the carrier 3 has the largest W value, so the selected carrier 3 is the carrier for sending the uplink and downlink timeslot configuration signaling.
Step 102: the base station sends uplink and downlink time slot matching signaling on the selected carrier, and implicitly indicates the uplink and downlink time slot matching of other carriers through a demodulation reference signal (DMRS) in a physical downlink shared channel. In the implicit indication process, DMRS patterns are different, and carriers implicitly indicated by demodulation reference signals are also different. If the base station sends the uplink and downlink time slot proportioning signaling on the carrier 1, the demodulation reference signal is used to implicitly indicate the carriers 2,3 and 4 or any combination thereof, as shown in the following table. If the base station sends the uplink and downlink time slot matching signaling on the carrier 2, the demodulation reference signal is used for implicitly indicating the carriers 1,3,4 or any combination thereof.
Step 103: and the terminal blindly detects the carrier wave for sending the uplink and downlink time slot matching signaling. The blind detection rule is performed according to the blind detection rule defined by 3GPP TS 38.211/213, for example, the terminal can acquire information such as time-frequency resource information, a scheduling period, CCE aggregation degrees possibly sent by the PDCCH, the number of times of blind detection required by each aggregation degree and the like of the PDCCH according to the search space and CORESET associated with the search space, and detect corresponding uplink and downlink time slot proportioning signaling.
Step 104: after detecting the carrier sending the uplink and downlink time slot matching signaling, the terminal determines the uplink and downlink time slot matching of other carriers according to the demodulation reference signal in the physical downlink shared channel.
In the same frequency band (frequency band), if the uplink and downlink timeslot ratios on different carriers are different, the uplink and downlink signal transmission between different carriers will have interference. In addition, although it is more flexible to send separate uplink and downlink timeslot configuration signaling on different carriers, it is difficult to implement on a base station product, and at the same time, a large signaling overhead is caused. Through the uplink and downlink time slot matching signaling and the demodulation reference signal mode of one carrier, the uplink and downlink time slot matching of other carriers is implicitly indicated, so that the signaling overhead can be saved, and the detection complexity of the terminal can be reduced.
Fig. 2 is a schematic diagram of a base station implicitly indicating the ratio of uplink and downlink timeslots of other carriers by using a demodulation reference signal in a physical downlink shared channel according to an embodiment of the present invention. The base station sends the uplink and downlink time slot ratio of the carrier on the carrier 1, and implicitly indicates the uplink and downlink time slot ratio of the carrier 2 and the carrier 3 by using a demodulation reference signal mode in a physical downlink shared channel.
Fig. 3 is a schematic diagram of a base station implicitly indicating the uplink and downlink timeslot ratios of other carriers by using a demodulation reference signal mode according to an embodiment of the present invention. Suppose that a base station sends uplink and downlink time slot matching signaling on a carrier 1, and implicitly indicates uplink and downlink time slot matching of other carriers according to the mode of the DMRS. For example, DMRS pattern 1 indicates the uplink and downlink slot allocation of carriers 2,3 (same as carrier 1), DMRS pattern 2 indicates the uplink and downlink slot allocation of carrier 2 (same as carrier 1), DMRS pattern 3 indicates the uplink and downlink slot allocation of carrier 3 (same as carrier 1), and DMRS pattern 4 indicates the uplink and downlink slot allocation of carriers 3,4 (same as carrier 1). However, according to the service quality requirement of the transmission service, the user priority and the weighted sum of the carrier load, the base station can dynamically select the carrier for transmitting the uplink and downlink time slot matching signaling from the carriers 1,2 and 3, and implicitly indicate the uplink and downlink time slot matching of other carriers by using the demodulation reference signal mode.
Fig. 4 is a schematic diagram of a base station dynamically selecting a carrier for sending uplink and downlink timeslot ratios and implicitly indicating uplink and downlink timeslot ratios of other carriers by using a demodulation reference signal mode, according to an embodiment of the present invention. In this embodiment, it is assumed that four carriers can perform carrier aggregation, i.e., carrier 1 (10 MHz, frequency point is 3.50 GHz), carrier 2 (20 MHz, frequency point is 3.51 GHz), carrier 3 (50 MHz, frequency point is 3.56 GHz), and carrier 4 (20 MHz, frequency point is 4 GHz). In fig. 4, since only carrier 1 and carrier 2 participate in the indication of the uplink and downlink timeslot allocation, the description of carrier 3 and carrier 4 is omitted. In slot 1 (slot # 1), the base station transmits uplink and downlink slot allocation on carrier 1, and indicates that the uplink and downlink slot allocation of carriers 2 and 3 is the same as that of carrier 1 by using DMRS pattern 1. In slot 2 (slot # 2), the base station transmits uplink and downlink slot allocation on carrier 2, and indicates that the uplink and downlink slot allocation of carrier 1 is the same as that of carrier 2 by using DMRS pattern 2. In slot 3 (slot # 3), the base station transmits uplink and downlink slot allocation on carrier 1, and indicates that the uplink and downlink slot allocation of carrier 2 is the same as that of carrier 1 by using DMRS pattern 2. In slot 4 (slot # 4), the base station transmits uplink and downlink slot allocation on carrier 1, and indicates that the uplink and downlink slot allocation of carriers 3 and 4 is the same as that of carrier 1 by using DMRS pattern 4.
Fig. 5 is a schematic structural diagram of an uplink and downlink timeslot matching processing unit (transmission) disclosed in the embodiment of the present invention, where the uplink and downlink timeslot matching processing unit (transmission) 20 includes:
an uplink and downlink time slot matching processing module 201, configured to process the DCI and the DMRS mode in uplink and downlink time slot matching;
and an uplink and downlink time slot ratio sending module 202, configured to send the DCI and the DMRS according to the uplink and downlink time slot ratio.
Fig. 6 is a schematic structural diagram of an uplink and downlink timeslot proportion processing unit (receiving) according to an embodiment of the present invention, where the uplink and downlink timeslot proportion processing unit (receiving) 30 includes:
an uplink and downlink time slot ratio detection module 301, configured to detect an uplink and downlink time slot ratio DCI and a DMRS mode;
an uplink and downlink timeslot configuration application module 302, configured to configure uplink and downlink timeslot configurations and transmission of related data.
The method and the device applied to the uplink and downlink time slot ratio indication processing in the embodiment comprise the following steps: the base station dynamically selects the carrier for sending the uplink and downlink time slot proportioning signaling according to the service quality requirement of the sending service, the user priority and the carrier load, and implicitly indicates the uplink and downlink time slot proportioning of other carriers through a demodulation reference signal in a physical downlink shared channel; the terminal blindly detects the carrier wave which sends the uplink and downlink time slot matching signaling, and determines the uplink and downlink time slot matching of other carrier waves according to the demodulation reference signal in the physical downlink shared channel. The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising one of 8230; \8230;" 8230; "does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module may reside in Random Access Memory (RAM), memory, read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. A signal processing method in a wireless communication system is applied to the transmission of uplink and downlink time slot ratio indication, and is characterized in that:
the base station dynamically selects the carrier for sending the uplink and downlink time slot proportioning signaling according to the service quality requirement of the sending service, the user priority and the carrier load, and implicitly indicates the uplink and downlink time slot proportioning of other carriers through a demodulation reference signal in a physical downlink shared channel;
the terminal determines the carrier sending the uplink and downlink time slot ratio signaling through blind detection, and determines the uplink and downlink time slot ratio of other carriers according to the demodulation reference signal in the physical downlink shared channel.
2. The base station of claim 1 dynamically selects the carrier for sending the uplink and downlink timeslot proportioning signaling according to the qos requirement of the sending service, the user priority and the carrier load, wherein the base station dynamically selects the carrier for sending the uplink and downlink timeslot proportioning signaling according to the weighted sum of the qos requirement of the sending service, the user priority and the carrier load.
3. The quality of service requirement of claim 1, comprising: latency, throughput and reliability.
4. The demodulation reference signal in the physical downlink shared channel according to claim 1, comprising: the time-frequency domain position and sequence of the reference signal are demodulated.
5. The terminal of claim 1, wherein the terminal determines the carrier for sending the uplink and downlink timeslot proportion signaling through blind detection, and wherein the terminal determines the carrier for sending the uplink and downlink timeslot proportion signaling according to a control channel blind detection rule.
6. A signal processing system in wireless communication system is applied to the transmission of the ratio indication of uplink and downlink time slots, the system at least comprises a base station and a terminal, and is characterized in that:
the base station dynamically selects the carrier for sending the uplink and downlink time slot proportioning signaling according to the service quality requirement of the sending service, the user priority and the carrier load, and implicitly indicates the uplink and downlink time slot proportioning of other carriers through a demodulation reference signal in a physical downlink shared channel;
the terminal determines the carrier sending the uplink and downlink time slot ratio signaling through blind detection, and determines the uplink and downlink time slot ratio of other carriers according to the demodulation reference signal in the physical downlink shared channel.
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