WO2023241647A1 - 一种波束选择的方法、终端及网络侧设备 - Google Patents

一种波束选择的方法、终端及网络侧设备 Download PDF

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Publication number
WO2023241647A1
WO2023241647A1 PCT/CN2023/100378 CN2023100378W WO2023241647A1 WO 2023241647 A1 WO2023241647 A1 WO 2023241647A1 CN 2023100378 W CN2023100378 W CN 2023100378W WO 2023241647 A1 WO2023241647 A1 WO 2023241647A1
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Prior art keywords
cell
preambles
information
network side
preamble
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PCT/CN2023/100378
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English (en)
French (fr)
Inventor
洪琪
王臣玺
李�根
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维沃移动通信有限公司
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Publication of WO2023241647A1 publication Critical patent/WO2023241647A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0617Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal for beam forming
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0837Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using pre-detection combining
    • H04B7/0842Weighted combining
    • H04B7/086Weighted combining using weights depending on external parameters, e.g. direction of arrival [DOA], predetermined weights or beamforming
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048Allocation of pilot signals, i.e. of signals known to the receiver
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W16/00Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/24Cell structures
    • H04W16/28Cell structures using beam steering
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02Power saving arrangements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02Power saving arrangements
    • H04W52/0203Power saving arrangements in the radio access network or backbone network of wireless communication networks
    • H04W52/0206Power saving arrangements in the radio access network or backbone network of wireless communication networks in access points, e.g. base stations

Definitions

  • This application belongs to the field of communication technology, and specifically relates to a beam selection method, terminal and network side equipment.
  • a closed base station is generally awakened by a UE in the current serving cell sending a wake-up signal.
  • a beam selection device in a second aspect, includes: a sending module, a processing module and a transmission module; the sending module is configured to send a signal to the first cell when the first cell is a cell to be awakened. N preambles; the first cell is different from the serving cell of the UE; the processing module is used to determine the first beam according to the first information; the first information is related to the above N preambles; the transmission module is used to Data is transmitted on the determined first beam.
  • a beam selection method is provided, which is applied to network side equipment.
  • the method includes: a first network side equipment receives N preambles sent by the UE; the first network side equipment based on the above N preambles, Determine the first beam; the above-mentioned first network side device sends the first information to the second network side device; wherein the first information is used to indicate the above-mentioned first beam and the first network side device is in the energy saving mode; the second network side device corresponds to The cell includes the serving cell of the UE.
  • a device for beam selection is provided.
  • the above-mentioned receiving module is used to receive N preambles sent by the UE;
  • the above-mentioned processing module is used to determine the first beam based on the above-mentioned N preambles;
  • the above-mentioned sending module is, Used to send the first information to the second network side device; wherein the first information is used to indicate the above-mentioned first beam; the cell corresponding to the second network side device includes the serving cell of the UE.
  • a network side device in a seventh aspect, includes a processor and a memory.
  • the memory stores programs or instructions that can be run on the processor.
  • the program or instructions are executed by the processor. hour Implement the steps of the method described in the first aspect.
  • a network side device is provided.
  • the network side device is a first network side device and includes a processor and a communication interface, wherein the communication interface is used to receive N preambles sent by the UE; the processing The device is configured to determine the first beam based on the above-mentioned N preambles; the communication interface is also used to send first information to the second network side device; wherein the first information is used to indicate the above-mentioned first beam, the first network side The device is in energy-saving mode; the cell corresponding to the second network side device includes the serving cell of the UE.
  • a ninth aspect provides a communication system, including: a terminal and a network side device.
  • the terminal can be used to perform the steps of the beam selection method as described in the first aspect.
  • the network side device can be used to perform the steps of the third aspect. The steps of the beam selection method described in this aspect.
  • a readable storage medium is provided. Programs or instructions are stored on the readable storage medium. When the programs or instructions are executed by a processor, the steps of the method described in the first aspect are implemented, or the steps of the method are implemented as described in the first aspect. The steps of the method described in the third aspect.
  • a computer program/program product is provided, the computer program/program product is stored in a storage medium, and the computer program/program product is executed by at least one processor to implement as described in the first aspect
  • Figure 1 is a possible structural schematic diagram of a communication system involved in an embodiment of the present invention
  • Figure 3 is a second schematic diagram of time-frequency resource mapping provided by an embodiment of the present application.
  • Figure 4 is a third schematic diagram of time-frequency resource mapping provided by an embodiment of the present application.
  • Figure 5 is the fourth schematic diagram of time-frequency resource mapping provided by the embodiment of the present application.
  • Figure 7 is a fifth schematic diagram of time-frequency resource mapping provided by an embodiment of the present application.
  • Figure 8 is a second schematic flowchart of a beam selection method provided by an embodiment of the present application.
  • Figure 9 is one of the structural schematic diagrams of a beam selection device provided by an embodiment of the present application.
  • Figure 10 is the second structural schematic diagram of a beam selection device provided by an embodiment of the present application.
  • Figure 11 is the third structural schematic diagram of a beam selection device provided by an embodiment of the present application.
  • Figure 12 is the fourth structural schematic diagram of a beam selection device provided by an embodiment of the present application.
  • Figure 14 is a schematic diagram of the hardware structure of a communication device provided by an embodiment of the present application.
  • Figure 15 is a schematic diagram of the hardware structure of an electronic device provided by an embodiment of the present application.
  • Figure 16 is a schematic diagram of the hardware structure of a network-side device provided by an embodiment of the present application.
  • first, second, etc. in the description and claims of this application are used to distinguish similar objects rather than describing a specific order or sequence. It is to be understood that the terms so used are interchangeable under appropriate circumstances so that the embodiments of the present application can be practiced in sequences other than those illustrated or described herein, and that "first” and “second” are distinguished objects It is usually one type, and the number of objects is not limited.
  • the first object can be one or multiple.
  • “and/or” in the description and claims indicates at least one of the connected objects, and the character “/" generally indicates that the related objects are in an "or” relationship.
  • SSB Time Division Duplex
  • the base station sends multiple SSBs (corresponding to different SSB subscripts) covering different directions.
  • the UE receives multiple SSBs with different signal strengths and selects the strongest one as its own SSB beam.
  • the process of selecting and determining the downlink beam includes the following steps P1 to P3 (base station transmits, UE receives):
  • Step P1 The transmitting antenna (Tx) transmits SSB signals for beam scanning (one SSB corresponds to one transmit beam (Tx beam)).
  • the beams on both the base station side and the UE side are traversing, and the UE side needs to automatically find a suitable signal for each SSB signal.
  • the receiving beam (Rx beam) (because SSB is the top layer of QCL, it needs to ensure that it corresponds to a suitable receiving beam);
  • the first step of the random access process is that the UE sends a random access preamble (Random Access Preamble).
  • the main function of the preamble is to tell the 5G base station (g-node-B, gNB) that there is a random access request, and enable gNB to estimate the transmission delay between it and the UE, so that gNB can calibrate the uplink timing (Uplink Timing) and Pass calibration information through Random Access Response (Random Access Response,
  • the timing advance command in RAR informs the UE.
  • the preamble sequence is generated by cyclically shifting the root ZC sequence (root Zadoff-Chu sequence).
  • Each PRACH time-frequency opportunity has 64 preambles defined. These 64 preambles will first be numbered in the order of increasing cyclic shift N_cs of the logical root sequence, and then in the order of increasing different logical root sequences. If 64 preambles cannot be obtained by cyclic shifting based on a single root sequence, then the remaining preamble sequences will be generated through the root sequences corresponding to the subsequent indexes until all 64 preambles are generated.
  • the NR random access process uses beams, in which the SSB has multiple transmission opportunities within the time domain period, and has corresponding numbers, which can correspond to different beams respectively.
  • the UE only when the SSB's beam scanning signal covers When it reaches the UE, the UE has the opportunity to send the preamble.
  • the network side receives the UE's preamble, it knows the best downlink beam. Therefore, the SSB needs to be associated with the preamble, and the preamble can only be sent at the PRACH transmission opportunity, so the SSB and PRACH transmission opportunities are separated. association.
  • the upper layer configures the number of SSBs associated with each PRACH transmission opportunity N (ssb-perRACH-Occasion) through the parameters The number of SSBs associated with each PRACH transmission opportunity and the number of contention-based preambles associated with each SSB, and the number N (ssb-perRACH-Occasion) associated with each SSB.
  • the total Number Of RA-Preambles defines the total number of preambles used for contention and non-contention random access on a PRACH resource, but does not include preambles used for other purposes, such as for system information (System Information, SI) requests. preamble. Therefore, it can be understood here that the preambles on a PRACH transmission opportunity are evenly divided into N parts, and the first R consecutive preambles of each part are used for contention-based random access and are related to a specific SS/PBCH block. Union. At this time, the number of contention-based preamble codes on a PRACH transmission opportunity is R*N.
  • a wake-up signal based on the physical downlink control channel (PDCCH) is introduced.
  • the function of the wake-up signal is to inform the UE whether it needs to monitor the PDCCH during the on duration of a specific discontinuous reception (DRX).
  • DRX discontinuous reception
  • the wake-up signal is a kind of downlink control information (DCI), referred to as DCP (DCI with CRC scrambled by PS-RNTI), where PS-RNTI is an RNTI allocated by the network to the UE specifically for power saving features.
  • DCI downlink control information
  • PS-RNTI is an RNTI allocated by the network to the UE specifically for power saving features.
  • the RNTI scrambled DCI carries the network’s wakeup/sleep instructions to the UE. Based on this indication, the UE decides whether to start the on Duration timer in the next DRX cycle, and whether Perform PDCCH monitoring.
  • LTE Long Term Evolution
  • LTE-Advanced, LTE-A Long Term Evolution
  • LTE-A Long Term Evolution
  • CDMA Code Division Multiple Access
  • TDMA Time Division Multiple Access
  • FDMA Frequency Division Multiple Access
  • OFDMA Orthogonal Frequency Division Multiple Access
  • SC-FDMA Single-carrier Frequency Division Multiple Access
  • NR New Radio
  • FIG. 1 shows a block diagram of a wireless communication system to which embodiments of the present application are applicable.
  • the wireless communication system includes a terminal 11 and a network side device 12.
  • the terminal 11 can be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer), or a notebook computer, a personal digital assistant (Personal Digital Assistant, PDA), a handheld computer, a netbook, or a super mobile personal computer.
  • Tablet Personal Computer Tablet Personal Computer
  • laptop computer laptop computer
  • PDA Personal Digital Assistant
  • PDA Personal Digital Assistant
  • UMPC ultra-mobile personal computer
  • UMPC mobile Internet device
  • Mobile Internet Device MID
  • AR augmented reality
  • VR virtual reality
  • robots wearable devices
  • VUE vehicle-mounted equipment
  • PUE pedestrian terminal
  • smart home home equipment with wireless communication functions, such as refrigerators, TVs, washing machines or furniture, etc.
  • game consoles personal computers (personal computers, PC), teller machines or self-service Terminal devices
  • wearable devices include: smart watches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart anklets, etc.), Smart wristbands, smart clothing, etc.
  • the network side equipment 12 may include access network equipment or core network equipment, where the access network equipment 12 may also be called wireless access network equipment, radio access network (Radio Access Network, RAN), radio access network function or Wireless access network unit.
  • the access network device 12 may include a base station, a WLAN access point or a WiFi node, etc.
  • the base station may be called a Node B, an evolved Node B (eNB), an access point, a Base Transceiver Station (BTS), a radio Base station, radio transceiver, Basic Service Set (BSS), Extended Service Set (ESS), Home B-Node, Home Evolved B-Node, Transmitting Receiving Point (TRP) or all
  • eNB evolved Node B
  • BTS Base Transceiver Station
  • BSS Basic Service Set
  • ESS Extended Service Set
  • Home B-Node Home Evolved B-Node
  • TRP Transmitting Receiving Point
  • FIG. 6 shows a schematic flowchart of a beam selection method provided by an embodiment of the present application.
  • the beam selection method may include the following steps 201 to 203:
  • Step 201 When the first cell is the cell to be awakened, the UE sends N preambles to the first cell.
  • the above-mentioned first cell is different from the serving cell where the UE is located.
  • Step 202 The UE determines the first beam according to the first information.
  • the first information is related to the N preambles sent by the UE.
  • the above-mentioned first information may be configured through radio resource control or system messages, or may be configured in the corresponding indication field in the downlink signal.
  • the first preamble is: the preamble corresponding to the first SSB among the N preambles; the timing calibration information is used to calibrate the time of the first network side device corresponding to the first cell. information.
  • the first network side device is in the energy saving mode.
  • the first cell of the first network side device can be considered as the cell to be awakened.
  • Step 203 The UE transmits data on the above-mentioned first beam.
  • the first beam is used to transmit and receive data of the first cell.
  • the above-mentioned first PDCCH includes: PDCCH of scheduling system information corresponding to the first SSB.
  • the UE when the first cell is a cell to be awakened, the UE sends N preambles to the first cell; the first cell is different from the UE's serving cell; the UE determines the first cell based on the first information.
  • the UE can obtain the first information by sending N preambles to the first cell to be awakened, thereby determining the first beam, and then can transmit data on the first beam, so that the UE and the first cell to be awakened can communicate with each other. Quickly and establishes beam connections.
  • the beam selection method provided by the embodiment of the present application also includes the following steps 301 and 302:
  • Step 301 The UE obtains second information.
  • the above-mentioned second information is configured through the above-mentioned first cell.
  • the above-mentioned second information may include preconfiguration information of the first cell, and the preconfiguration information of the first cell includes at least one of the following: SSB configuration, mapping relationship between SSB and preamble, Prach occasion, etc.
  • the UE when the second information includes at least one of the following: the SSB configuration of the first cell, the mapping relationship between the SSB of the first cell and the above-mentioned N preambles, and the PRACH transmission opportunity , the UE can indirectly determine the time-frequency resources of N preambles to be sent based on this information, and then can send N preambles to the first cell based on these time-frequency resources.
  • the above-mentioned step 302 may include the following steps 302a and 302b:
  • Step 302a The UE determines the time-frequency resources of N preambles based on the above-mentioned second information.
  • Step 302b The UE sends N preambles to the first cell based on the determined time-frequency resources of the N preambles.
  • the UE determines the time-frequency resources of N preambles based on the above-mentioned second information may include the following steps 302a1 and 302a2:
  • Step 302a1 The UE determines time-frequency resources of N preambles based on the second information and the first rule.
  • the first rule includes at least one of the following:
  • Rule 2 The location of the time-frequency resource of the preamble to be sent is determined based on the following:
  • the number of preambles to be sent may be equal to the number of SSBs corresponding to the first cell, or may be a multiple of the number of SSBs corresponding to the first cell.
  • the UE when sending N preambles to the first cell, the UE may use at least one of the following sending methods to send:
  • Method 1 TDM method.
  • preambles may be sent in time domain order. Specifically, multiple preambles are sent sequentially from T0 to T3. For example, referring to (a) in Figure 7 , it is assumed that the preamble sequence received by the base station at time T1 is the strongest, or the base station determines that the preamble sequence received at this time is the best. Then the base station can select SSB1 as the downlink beam.
  • each block in Figure 7 corresponds to a time-frequency position
  • the SSB number in each time-frequency position represents the downlink SSB beam sent by the corresponding base station at that time-frequency position.
  • the preambles can be sent in frequency domain order.
  • SSB0/1-SSB2/3 in the dotted box transmit the downlink SSB beam of the corresponding base station in the four frequency domains from bottom to top at the corresponding time and frequency positions.
  • the base station receives the strongest preamble sequence in the F3 frequency domain, or the base station determines that the preamble sequence received in this F3 frequency domain is the best. Then the base station selects SSB0 or SSB1 as the downlink beam. Furthermore, which beam to select is determined based on the preamble sequence (for example, preamble 0-31 represents SSB0, preamble 32-63 represents SSB1).
  • the preamble may be sent in the order of frequency domain first and then time domain.
  • SSB0-SSB3 in the dotted box first send the downlink SSB beam of the corresponding base station at the corresponding time and frequency position from bottom to top and then from left to right.
  • Method 4 TDM first and then FDM.
  • the UE receives the second information in the above step 301 may include the following step 301a:
  • Step 301a The UE obtains the second information sent by the first network side device.
  • the above-mentioned first network side device is in energy saving mode.
  • the first network side device may be an energy-saving state base station corresponding to the first cell to be awakened.
  • the above-mentioned second information is sent by the first network side device to the second network side device corresponding to the serving cell where the UE is located, and then the second network side device sends it to the UE.
  • the first network side device can determine the first beam based on the N preambles, and then use the second network side device to indicate The first information of the first beam is sent to the UE, so that the UE can directly determine the first beam based on the first information.
  • the UE determines the first beam by itself according to specific rules.
  • the beam selection method provided by the embodiment of the present application also includes the following step 401:
  • Step A1 The UE detects the downlink signal after sending each preamble.
  • the UE after each time the UE completes sending the preamble, it will detect the downlink signal within the first predetermined time.
  • the UE may also select a beam based on the beam corresponding to the current best signal quality and the previous beam history information used. For example, the beam 1 was used before, and the UE currently receives multiple beams, namely beam 1, beam 2, and beam 3. The signal quality is beam 2 > beam 1 > beam 3. At this time, the UE will choose Beam 1 serves as the receive beam.
  • the beam selection method provided by the embodiment of the present application also includes the following step A1:
  • the above first condition includes any of the following:
  • Condition 1 The UE does not detect the downlink signal within the first predetermined time after sending the above preamble;
  • Condition 2 The signal quality of the downlink signal detected by the UE does not meet the predetermined condition.
  • the above-mentioned first predetermined time is configured by the serving cell to the UE through RRC or system messages, or the relevant indication field of the downlink signal.
  • the above predetermined condition is that the RSRP/SINR/SNR of the detected downlink signal is lower than a predetermined threshold.
  • the above-mentioned predetermined threshold is pre-configured by the protocol.
  • the beam selection method provided by the embodiment of the present application further includes the following step B1:
  • the UE can select the beam with the best signal quality detected by itself as the first beam, and transmit data on this beam.
  • Step 502 The first network side device determines the first beam based on the N preambles.
  • Step 503 The first network side device sends the first information to the second network side device.
  • Step 505 The UE determines the first beam based on the first information.
  • Step 506 The UE transmits data on the first beam.
  • the above-mentioned first information is used to indicate the above-mentioned first beam and the above-mentioned first network side device is in the energy-saving mode.
  • the cell corresponding to the second network side device includes the serving cell where the UE is located, that is, the second network side device is the base station corresponding to the serving cell where the UE is located.
  • the beam selection method provided by the embodiment of the present application may include the following step 502a:
  • Step 502a The first network side device determines the first beam based on the channel quality of the transmission channels of the N preambles.
  • the first network-side device may also select a preamble based on the preamble with the best current channel quality and the previously received preambles and historical information used.
  • This preamble determines the first beam.
  • the preamble 1 used before, and the preambles currently received by the UE for multiple channels are channel 1, channel 2, and channel 3.
  • the signal quality is channel 2 > channel 1 > channel 3.
  • the UE will select the preamble corresponding to channel 1 and use the beam corresponding to the preamble as the receiving beam.
  • the beam selection method provided by the embodiment of the present application further includes the following step C1:
  • Step C1 The first network side device configures the second information for the UE.
  • the above-mentioned second information includes at least one of the following:
  • Step D1 The first network side device receives the wake-up signal sent by the UE on the time-frequency resource corresponding to the first beam.
  • This embodiment mainly considers the case where the wake-up signal sent by the UE to the first network side device is a preamble.
  • the beam selection method provided by the embodiment of the present application specifically includes the following steps S1 to step S6:
  • Step S1 The serving cell (i.e., the second network side device) determines the number of SSBs of the base station (i.e., the first network side device) in energy-saving mode, the mapping relationship between SSBs and preambles, PRACH transmission timing, etc., through RRC or downlink.
  • the signal is configured to the UE.
  • the above-mentioned downlink signals include: SSB, SIB1, PDCCH, PDSCH, CSI-RS, etc.
  • the serving cell does not need to additionally configure the mapping relationship between the SSB and the preamble of the energy-saving base station (ie, the first network side device), the PRACH transmission timing, and so on. It is only necessary to configure the consistent information to the UE through RRC or downlink signals.
  • Step S2 The UE sends N preambles at corresponding positions according to the above-mentioned base station configuration information in the energy-saving mode and the first rule.
  • the first rule is as follows:
  • Rule 1 The number of preambles to be sent is determined according to the number of SSBs of the energy-saving base station: it can be equal or a multiple of it.
  • the UE When the UE sends N preambles to the first cell, it may use at least one of the following sending methods to send:
  • Method 3 FDM first and then TDM
  • Step S5 The serving cell configures the beam information, timing calibration and other information to the UE.
  • This configuration method can be configured through RRC or the corresponding indication field in the downlink signal.
  • Step S3 The energy-saving base station receives N preambles at corresponding locations and selects a preamble with the best channel quality. That is, select a preamble whose RSRP/SINR is higher than a certain threshold/threshold.
  • the first beam is quickly determined through N preambles, so that the UE and the first cell to be awakened can quickly establish a beam connection.
  • the execution subject may be a beam selection device.
  • the method of performing beam selection by a beam selection device is used as an example to illustrate the beam selection provided by the embodiments of the present application. Selected device.
  • the beam selection device 600 includes: a sending module 601, a processing module 602 and a transmission module 603, wherein: the sending module 601 is used to perform the first When the cell is a cell to be awakened, N preambles are sent to the first cell; the first cell is different from the serving cell of the UE; the processing module 602 is used to determine the first beam according to the first information; the first The information is related to the N preambles sent above; the transmission module 603 is used to transmit data on the first beam.
  • the above-mentioned processing module 602 is also configured to determine the time-frequency resources of the above-mentioned N preambles based on the above-mentioned second information; the above-mentioned sending module 601 is specifically configured to determine the time-frequency resources based on the determined above-mentioned N preambles.
  • the time-frequency resource of the preamble is used to send N preambles to the above-mentioned first cell.
  • the beam selection device 7 also includes: a detection module 605; the detection module 605 is used to detect the downlink after sending each of the above preambles. Signal; the above-mentioned processing module 602 is specifically configured to determine the first beam based on the detected signal quality of the above-mentioned downlink signal; wherein the first information includes the signal quality of the downlink signal.
  • the above-mentioned sending module 601 is also configured to stop sending the above-mentioned N preambles if the downlink signal fails to be detected after repeatedly sending the above-mentioned N preambles.
  • RACH or PUCCH is sent on the time-frequency resource corresponding to the above-mentioned first beam.
  • the first PDCCH includes: a PDCCH of scheduling system information corresponding to the first SSB.
  • the device when the first cell is the cell to be awakened, the device sends N preambles to the first cell; the first cell is different from the serving cell of the UE; and According to the first information, the first beam is determined; the first information is related to the above-mentioned N preambles; data is transmitted on the above-mentioned first beam.
  • the UE can obtain the first information by sending N preambles to the first cell to be awakened, thereby determining the first beam, and then can transmit data on the first beam, so that the UE and the first cell to be awakened can communicate with each other. Quickly and establishes beam connections.
  • the beam selection device 700 It includes: a receiving module 701, a processing module 702 and a sending module 703, wherein: the receiving module 701 is used to receive N preambles sent by the UE; the processing module 702 is used to determine the Nth preamble based on the received N preambles. A beam; the sending module 703 is used to send the first information to the second network side device; wherein the first information is used to indicate the above-mentioned first beam and the first network side device is in the energy saving mode; the second network side device corresponds to The cell includes the serving cell of the UE.
  • the above-mentioned processing module 702 is specifically configured to determine the first beam based on the channel quality of the transmission channel of the above-mentioned N preambles.
  • the first information includes at least one of the following: first SSB; first preamble; timing calibration information; cell identity of the first cell; wherein the first cell is the first network side The cell where the UE is to be awakened in the cell corresponding to the device; the first preamble is: the preamble corresponding to the first SSB among the above N preambles; the timing calibration information is used to calibrate the first network side device corresponding to the first cell. time information.
  • the above-mentioned receiving module 701 is also used to receive a wake-up signal sent by the UE on the time-frequency resource corresponding to the above-mentioned first beam; wherein the wake-up signal includes at least one of the following: first beam The preamble; the PUCCH of the first beam.
  • the device receives N preambles sent by the UE; thereby, determines the first beam based on the N preambles sent by the UE; and then sends the username to the second network side device.
  • the first network side device is in an energy saving mode; the cell corresponding to the second network side device includes the serving cell of the UE.
  • the first network side device can determine the first beam by receiving N preambles sent by the UE, thereby sending the first information indicating the first beam to the second network side device, thereby enabling the network side device to Data is transmitted on the first beam so that the UE and the first cell to be awakened can quickly establish a beam connection.
  • the beam selection device in the embodiment of the present application may be an electronic device, such as an electronic device with an operating system, or may be a component in the electronic device, such as an integrated circuit or chip.
  • the electronic device may be a terminal or other devices other than the terminal.
  • terminals may include but are not limited to the types of terminals 11 listed above, and other devices may be servers, network attached storage (Network Attached Storage, NAS), etc., which are not specifically limited in the embodiment of this application.
  • NAS Network Attached Storage
  • the beam selection device provided by the embodiment of the present application can implement each process implemented by the method embodiments of Figures 9 to 13, and achieve the same technical effect. To avoid duplication, the details will not be described here.
  • this embodiment of the present application also provides a communication device 800, which includes a processor 801 and a memory 802.
  • the memory 802 stores programs or instructions that can be run on the processor 801, for example.
  • the communication device 800 is a terminal, when the program or instruction is executed by the processor 801, each step of the above beam selection method embodiment is implemented, and the same technical effect can be achieved.
  • the communication device 800 is a network-side device, when the program or instruction is executed by the processor 801, each step of the above-mentioned beam selection method embodiment is implemented, and the same technical effect can be achieved. To avoid duplication, the details are not repeated here.
  • An embodiment of the present application also provides a terminal, including a processor and a communication interface, wherein the communication interface is used to send N preamble codes to the first cell when the first cell is a cell to be awakened; the first cell One cell is different from the serving cell of the UE; the processor is configured to determine the first beam according to the first information; the first information is related to the N preambles; the UE transmits data on the first beam.
  • This terminal embodiment corresponds to the above-mentioned terminal-side method embodiment.
  • Each implementation process and implementation manner of the above-mentioned method embodiment can be applied to this terminal embodiment, and can achieve the same technical effect.
  • FIG. 15 is a schematic diagram of the hardware structure of a terminal that implements an embodiment of the present application.
  • the terminal 100 includes but is not limited to: a radio frequency unit 101, a network module 102, an audio output unit 103, an input unit 104, a sensor 105, a display unit 106, a user input unit 107, an interface unit 108, a memory 109, a processor 110, etc. At least some parts.
  • the terminal 100 may also include a power supply (such as a battery) that supplies power to various components.
  • the power supply may be logically connected to the processor 110 through a power management system, thereby managing charging, discharging, and power consumption through the power management system. Management and other functions.
  • the terminal structure shown in Figure 15 does not constitute a requirement for the terminal , the terminal may include more or fewer components than shown in the figure, or may combine certain components, or arrange different components, which will not be described again here.
  • the input unit 104 may include a graphics processing unit (Graphics Processing Unit, GPU) 1041 and a microphone 1042.
  • the graphics processor 1041 is responsible for the image capture device in the video capture mode or the image capture mode. (such as a camera) to process the image data of still pictures or videos.
  • the display unit 106 may include a display panel 1061, which may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like.
  • the user input unit 107 includes a touch panel 1071 and at least one of other input devices 1072 .
  • Touch panel 1071 is also called a touch screen.
  • the touch panel 1071 may include two parts: a touch detection device and a touch controller.
  • Other input devices 1072 may include, but are not limited to, physical keyboards, function keys (such as volume control keys, switch keys, etc.), trackballs, mice, and joysticks, which will not be described again here.
  • the radio frequency unit 101 after receiving downlink data from the network side device, the radio frequency unit 101 can transmit it to the processor 110 for processing; in addition, the radio frequency unit 101 can send uplink data to the network side device.
  • the radio frequency unit 101 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc.
  • Memory 109 may be used to store software programs or instructions as well as various data.
  • the memory 109 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data, wherein the first storage area may store an operating system, an application program or instructions required for at least one function (such as a sound playback function, Image playback function, etc.) etc.
  • memory 109 may include volatile memory or nonvolatile memory, or memory 109 may include both volatile and nonvolatile memory.
  • non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electrically removable memory.
  • Volatile memory can be random access memory (Random Access Memory, RAM), static random access memory (Static RAM, SRAM), dynamic random access memory (Dynamic RAM, DRAM), synchronous dynamic random access memory (Synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (Double Data Rate SDRAM, DDRSDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (Synch link DRAM) , SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DRRAM).
  • RAM Random Access Memory
  • SRAM static random access memory
  • DRAM dynamic random access memory
  • DRAM synchronous dynamic random access memory
  • SDRAM double data rate synchronous dynamic random access memory
  • Double Data Rate SDRAM Double Data Rate SDRAM
  • DDRSDRAM double data rate synchronous dynamic random access memory
  • Enhanced SDRAM, ESDRAM synchronous dynamic random access memory
  • Synch link DRAM synchronous link dynamic random access memory
  • SLDRAM direct memory
  • the processor 110 may include one or more processing units; optionally, the processor 110 integrates an application processor and a modem processor, where the application processor mainly handles operations related to the operating system, user interface, application programs, etc., Modem processors mainly process wireless communication signals, such as baseband processors. It can be understood that the above modem processor may not be integrated into the processor 110 .
  • the radio frequency unit 101 is used to send N preambles to the first cell when the first cell is a cell to be awakened; the first cell is different from the serving cell of the UE; the processor 110 is used to send N preambles to the first cell according to the first cell. information to determine the first beam; the first information is related to the N preambles sent; the processor 110 is used to transmit data on the first beam.
  • the first information includes at least one of the following: a first SSB; a first preamble; timing calibration information; the cell identity of the above-mentioned first cell; wherein the first preamble is: the above-mentioned The preamble corresponding to the first SSB among the N preambles; the timing calibration information is used to calibrate the time information of the first network side device corresponding to the first cell, and the first network side device is in the energy saving mode.
  • the second information includes at least one of the following: the SSB configuration of the first cell; the mapping relationship between the SSB of the first cell and the above-mentioned N preambles; the PRACH transmission opportunity; the above-mentioned N Time-frequency resources of the preamble.
  • the processor 110 is further configured to determine the time-frequency resources of the N preambles based on the second information; the radio frequency unit 101 is specifically configured to determine the time-frequency resources of the N preambles based on the determined N The time-frequency resource of the preamble is used to send N preambles to the above-mentioned first cell.
  • the above-mentioned processor 110 is specifically configured to determine the time-frequency resources of the above-mentioned N preambles based on the above-mentioned second information and the first rule; wherein the first rule includes at least one of the following: : The number of preambles to be sent is determined based on the number of SSBs corresponding to the above-mentioned first cell; the location of the time-frequency resource of the preamble to be sent is determined based on the number of SSBs corresponding to the above-mentioned first cell, PRACH transmission timing , the RACH transmission opportunity of each SSB corresponding to the above-mentioned first cell, msg1-FDM.
  • the above-mentioned radio frequency unit 101 is specifically used to obtain the second information sent by the first network side device; wherein the first network side device is in the energy saving mode.
  • the above-mentioned processor 110 is configured to detect a downlink signal after sending each of the above-mentioned preambles; the above-mentioned processor 110 is specifically configured to determine based on the detected signal quality of the above-mentioned downlink signal.
  • the first beam wherein the first information includes the signal quality of the downlink signal.
  • the above-mentioned radio frequency unit 101 is also configured to resend the above-mentioned N preambles when the first condition is met; wherein the first condition includes any of the following: The UE is sending No downlink signal is detected within the first predetermined time after the above preamble; the signal quality of the downlink signal detected by the UE does not meet the predetermined condition.
  • the above-mentioned radio frequency unit 101 is also configured to stop sending the above-mentioned N preambles if the downlink signal fails to be detected after repeatedly sending the above-mentioned N preambles.
  • RACH or PUCCH is sent on the time-frequency resource corresponding to the above-mentioned first beam.
  • the first PDCCH includes: a PDCCH of scheduling system information corresponding to the first SSB.
  • the terminal when the first cell is the cell to be awakened, the terminal sends N preambles to the first cell; the first cell is different from the serving cell of the UE; and according to the first information to determine the first beam; the first information is related to the above-mentioned N preambles; data is transmitted on the above-mentioned first beam.
  • the UE can obtain the first information by sending N preambles to the first cell to be awakened, thereby determining the first beam, and then can transmit data on the first beam, so that the UE and the first cell to be awakened can communicate with each other. Quickly and establishes beam connections.
  • An embodiment of the present application also provides a network side device, including a processor and a communication interface.
  • the communication interface is configured to send N preamble codes to the first cell when the first cell is a cell to be awakened;
  • One cell is different from the serving cell of the UE;
  • the processor is configured to determine the first beam according to the first information;
  • the first information is related to the N preambles;
  • the UE transmits data on the first beam.
  • This network-side device embodiment corresponds to the above-mentioned network-side device method embodiment.
  • Each implementation process and implementation manner of the above-mentioned method embodiment can be applied to this network-side device embodiment, and can achieve the same technical effect.
  • the embodiment of the present application also provides a network side device.
  • the network side device 900 includes: an antenna 91 , a radio frequency device 92 , a baseband device 93 , a processor 94 and a memory 95 .
  • the antenna 91 is connected to the radio frequency device 92 .
  • the radio frequency device 92 receives information through the antenna 91 and sends the received information to the baseband device 93 for processing.
  • the baseband device 93 processes the information to be sent and sends it to the radio frequency device 92.
  • the radio frequency device 92 processes the received information and then sends it out through the antenna 91.
  • the method performed by the network side device in the above embodiment can be implemented in the baseband device 93, which includes a baseband processor.
  • the baseband device 93 may include, for example, at least one baseband board on which multiple chips are disposed, as shown in FIG. Program to perform the network device operations shown in the above method embodiments.
  • the network side device may also include a network interface 96, which is, for example, a common public radio interface (CPRI).
  • a network interface 96 which is, for example, a common public radio interface (CPRI).
  • CPRI common public radio interface
  • the network side device 900 in this embodiment of the present invention also includes: instructions or programs stored in the memory 95 and executable on the processor 94.
  • the processor 94 calls the instructions or programs in the memory 95 to execute each of the steps shown in Figure 7. The method of module execution and achieving the same technical effect will not be described in detail here to avoid duplication.
  • the processor is the processor in the terminal described in the above embodiment.
  • the readable storage medium includes computer readable storage media, such as computer read-only memory ROM, random access memory RAM, magnetic disk or optical disk, etc.
  • An embodiment of the present application further provides a chip.
  • the chip includes a processor and a communication interface.
  • the communication interface is coupled to the processor.
  • the processor is used to run programs or instructions to implement the above-mentioned beam selection method embodiment. Each process can achieve the same technical effect. To avoid repetition, we will not go into details here.
  • chips mentioned in the embodiments of this application may also be called system-on-chip, system-on-a-chip, system-on-chip or system-on-chip, etc.
  • Embodiments of the present application further provide a computer program/program product.
  • the computer program/program product is stored in a storage medium.
  • the computer program/program product is executed by at least one processor to implement the above method of beam selection.
  • Each process in the example can achieve the same technical effect. To avoid repetition, we will not repeat it here.
  • the methods of the above embodiments can be implemented by means of software plus the necessary general hardware platform. Of course, it can also be implemented by hardware, but in many cases the former is better. implementation.
  • the technical solution of the present application can be embodied in the form of a computer software product that is essentially or contributes to the existing technology.
  • the computer software product is stored in a storage medium (such as ROM/RAM, disk , CD), including several instructions to cause a terminal (which can be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in various embodiments of this application.

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Abstract

本申请公开了一种波束选择的方法、终端及网络侧设备,属于通信技术领域,本申请实施例的波束选择的方法包括:在第一小区为待唤醒小区的情况下,用户设备UE向第一小区发送N个前导码;该第一小区与UE的服务小区不同;UE根据第一信息,确定第一波束;该第一信息与N个前导码相关;UE在上述第一波束上传输数据。

Description

一种波束选择的方法、终端及网络侧设备
相关申请的交叉引用
本申请主张在2022年06月15日在中国提交的中国专利申请号202210680851.X的优先权,其全部内容通过引用包含于此。
技术领域
本申请属于通信技术领域,具体涉及一种波束选择的方法、终端及网络侧设备。
背景技术
在网络节能技术中可能会存在这样一种可能:在网络部署中,有一些基站为了节能,处于关闭状态。此时,基于种种原因,如用户设备UE数据需求,网络侧需求等,需要将某个/些关闭的基站唤醒。在相关技术中,一般通过处于当前服务小区(serving cell)下的UE发送唤醒信号唤醒已关闭的基站。
然而,在唤醒基站的场景下,唤醒的基站与UE之间的波束(beam)连接需要被考虑。因此,如何在唤醒基站的场景下快速的选择并建立波束连接是亟待解决的问题。
发明内容
本申请实施例提供一种波束选择的方法,能够在唤醒基站的场景下快速的选择并建立波束连接。
第一方面,提供了一种波束选择的方法,应用于终端,该方法包括:在第一小区为待唤醒小区的情况下,用户设备UE向该第一小区发送N个前导码;该第一小区与UE的服务小区不同;UE根据第一信息,确定第一波束;该第一信息与上述N个前导码相关;上述UE在上述第一波束上传输数据。
第二方面,提供了一种波束选择的装置,该装置包括:发送模块、处理模块和传输模块;该发送模块,用于在第一小区为待唤醒小区的情况下,向该第一小区发送N个前导码;第一小区与UE的服务小区不同;该处理模块,用于根据第一信息,确定第一波束;该第一信息与上述N个前导码相关;该传输模块,用于在确定的上述第一波束上传输数据。
第三方面,提供了一种波束选择的方法,应用于网络侧设备,该方法包括:第一网络侧设备接收UE发送的N个前导码;该第一网络侧设备基于上述N个前导码,确定第一波束;上述第一网络侧设备向第二网络侧设备发送第一信息;其中,第一信息用于指示上述第一波束,第一网络侧设备处于节能模式;第二网络侧设备对应的小区包括该UE的服务小区。
第四方面,提供了一种波束选择的装置,上述接收模块,用于接收UE发送的N个前导码;上述处理模块,用于基于上述N个前导码,确定第一波束;上述发送模块,用于向第二网络侧设备发送第一信息;其中,第一信息用于指示上述第一波束;第二网络侧设备对应的小区包括该UE的服务小区。
第五方面,提供了一种终端,该终端包括处理器和存储器,所述存储器存储可在所述处理器上运行的程序或指令,所述程序或指令被所述处理器执行时实现如第一方面所述的方法的步骤。
第六方面,提供了一种终端,包括处理器及通信接口,其中,所述通信接口用于在第一小区为待唤醒小区的情况下,向该第一小区发送N个前导码;该第一小区与UE的服务小区不同;所述处理器用于根据第一信息,确定第一波束;该第一信息与上述N个前导码相关;UE在上述第一波束上传输数据。
第七方面,提供了一种网络侧设备,该网络侧设备包括处理器和存储器,所述存储器存储可在所述处理器上运行的程序或指令,所述程序或指令被所述处理器执行时 实现如第一方面所述的方法的步骤。
第八方面,提供了一种网络侧设备,该网络侧设备为第一网络侧设备,包括处理器及通信接口,其中,所述通信接口用于接收UE发送的N个前导码;所述处理器用于基于上述N个前导码,确定第一波束;所述通信接口还用于向第二网络侧设备发送第一信息;其中,该第一信息用于指示上述第一波束,第一网络侧设备处于节能模式;第二网络侧设备对应的小区包括该UE的服务小区。
第九方面,提供了一种通信系统,包括:终端及网络侧设备,所述终端可用于执行如第一方面所述的波束选择的方法的步骤,所述网络侧设备可用于执行如第三方面所述的波束选择的方法的步骤。
第十方面,提供了一种可读存储介质,所述可读存储介质上存储程序或指令,所述程序或指令被处理器执行时实现如第一方面所述的方法的步骤,或者实现如第三方面所述的方法的步骤。
第十一方面,提供了一种芯片,所述芯片包括处理器和通信接口,所述通信接口和所述处理器耦合,所述处理器用于运行程序或指令,实现如第一方面所述的方法,或实现如第三方面所述的方法。
第十二方面,提供了一种计算机程序/程序产品,所述计算机程序/程序产品被存储在存储介质中,所述计算机程序/程序产品被至少一个处理器执行以实现如第一方面所述的波束选择的方法的步骤,或如第三方面所述的波束选择的方法的步骤。
在本申请实施例中,在第一小区为待唤醒小区的情况下,UE向该第一小区发送N个前导码;该第一小区与UE的服务小区不同;UE根据第一信息,确定第一波束;该第一信息与上述N个前导码相关;上述UE在上述第一波束上传输数据。如此,UE可以通过向待唤醒的第一小区发送N个前导码,来得到第一信息,从而确定第一波束,进而可以在该第一波束上传输数据,使得UE与待唤醒第一小区可以快速并建立波束连接。
附图说明
图1为本发明实施例所涉及的通信系统的一种可能的结构示意图;
图2是本申请实施例提供的一种时频资源映射示意图之一;
图3是本申请实施例提供的一种时频资源映射示意图之二;
图4是本申请实施例提供的一种时频资源映射示意图之三;
图5是本申请实施例提供的一种时频资源映射示意图之四;
图6是本申请实施例提供的一种波束选择的方法的流程示意图之一;
图7是本申请实施例提供的一种时频资源映射示意图之五;
图8是本申请实施例提供的一种波束选择的方法的流程示意图之二;
图9是本申请实施例提供的一种波束选择的装置的结构示意图之一;
图10是本申请实施例提供的一种波束选择的装置的结构示意图之二;
图11是本申请实施例提供的一种波束选择的装置的结构示意图之三;
图12是本申请实施例提供的一种波束选择的装置的结构示意图之四;
图13是本申请实施例提供的一种波束选择的装置的结构示意图之五;
图14是本申请实施例提供的一种通信设备的硬件结构示意图;
图15是本申请实施例提供的一种电子设备的硬件结构示意图;
图16是本申请实施例提供的一种网络侧设备的硬件结构示意图。
具体实施方式
下面将结合本申请实施例中的附图,对本申请实施例中的技术方案进行清楚描述,显然,所描述的实施例是本申请一部分实施例,而不是全部的实施例。基于本申请中的实施例,本领域普通技术人员所获得的所有其他实施例,都属于本申请保护的范围。
本申请的说明书和权利要求书中的术语“第一”、“第二”等是用于区别类似的 对象,而不用于描述特定的顺序或先后次序。应该理解这样使用的术语在适当情况下可以互换,以便本申请的实施例能够以除了在这里图示或描述的那些以外的顺序实施,且“第一”、“第二”所区别的对象通常为一类,并不限定对象的个数,例如第一对象可以是一个,也可以是多个。此外,说明书以及权利要求中“和/或”表示所连接对象的至少其中之一,字符“/”一般表示前后关联对象是一种“或”的关系。
以下将对本申请实施例提供的技术方案中所涉及的技术术语进行说明:
1.波束(beam)
由于低频资源的匮乏,5G标准使用了高频段传播数据,如毫米波,因为高频段的传播损耗比低频段要大,所以其覆盖距离相比LTE要差。为了解决这个问题,5G通过多天线波束赋形(Beam Forming)方式来实现对信号的加强,进而实现覆盖的增强。目前,波束赋形是一种使用传感器阵列定向发送和接收信号的信号处理技术。波束赋形技术通过调整相位阵列的基本单元的参数,使得某些角度的信号获得相长干涉,而另一些角度的信号获得相消干涉,使天线波束指向某个特定的方向。下行的波束的建立一般通过同步信号块(Synchronization Signal Block,SSB)以及信道状态信息参考信号(Channel State Information-Reference Signal,CSI-RS)确定。
以SSB为例:由于波束较窄,所以在标准中按照时分复用(Time Division Duplex,TDD)的方式将相同的SSB通过波束的形式发送到不同方向,以使得各个方向的UE都可以收到SSB。在5ms的范围内,基站发送多个SSB(对应不同的SSB下标)分别覆盖不同的方向。UE接收到多个信号强度不一样的SSB,选择一个最强的作为自己的SSB波束。
NR随机接入过程使用了波束,其中SSB在时域周期内有多次发送机会,并且有相应的编号,其可分别对应不同的波束,而对于UE而言,只有当SSB的波束扫描信号覆盖到UE时,UE才有机会发送前导码。而当网络侧收到UE的前导码时,就知道下行最佳波束,因此SSB需要与前导码有一个关联,而前导码都是在物理随机接入信道(Physical Random Access Channel,PRACH)传输时机才能进行发送,则SSB与PRACH传输时机进行了关联。
2.波束的建立
下行链路波束的选择和确定的过程包括如下步骤P1至步骤P3(基站发送,UE接收):
步骤P1:发射天线(Tx)以发送SSB信号进行波束扫描(一个SSB对应一个发射波束(Tx beam)),基站侧和UE侧波束都在遍历,UE侧需自动为每个SSB信号找到一个合适的接收波束(Rx beam)(因为SSB作为QCL顶层,需要确保其都对应一个合适的接收波束);
步骤P2:发射天线在步骤P1结束后确定的发射宽波束(Tx wide beam)范围内,以发送CSI-RS(周期、半持续或者非周期)或SSB(只能是周期)信号进行波束细化扫描,接收波束不变,确定发射窄波束(Tx narrow beam);
步骤P3:发射波束固定为步骤P2结束后选定的发射窄波束,发送CSI-RS(重复(repetition)=“on”,即不配置QCL关系,UE自主实现接收,进行扫描)信号,接收天线进行波束扫描,确定接收波束。
3.前导码(preamble)
在小区搜索过程和获取系统信息之后,UE已经与小区取得了下行同步,此时UE能够接收下行数据。但UE只有与小区取得上行同步,才能进行上行传输。UE通过随机接入过程(Random Access Procedure)与小区建立连接并取得上行同步。随机接入过程成功之后,UE就处于无线资源控制(Radio Resource Control,RRC)连接态,并可以与网络进行正常的上下行传输了。随机接入的主要目的:(1)获得上行同步;(2)为UE分配一个唯一的标识小区无线网络临时标识(Cell-Radio Network Temporary Identifier,C-RNTI)。
随机接入过程的步骤一是UE发送随机接入前导码(Random Access Preamble)。前导码的主要作用是告诉5G基站(g-node-B,gNB)有一个随机接入请求,并使得gNB能估计其与UE之间的传输时延,以便gNB校准上行定时(Uplink Timing)并将校准信息通过随机接入响应(Random Access Response, RAR)中的定时提前(timing advance)命令告知UE。
其中,前导码序列是通过对根ZC序列(root Zadoff-Chu sequence)进行循环移位生成的。每个PRACH时频机会上定义了64个前导码,这64个前导码会先按照逻辑根序列的循环移位N_cs递增的顺序,后不同逻辑根序列递增的顺序进行编号。如果基于单一的根序列进行循环移位无法获得64个前导码,那么剩余的前导码序列会通过紧接着的索引对应的根序列来生成,直到64个前导码都生成了为止。
4.前导码与SSB的映射
NR随机接入过程使用了波束,其中SSB在时域周期内有多次发送机会,并且有相应的编号,其可分别对应不同的波束,而对于UE而言,只有当SSB的波束扫描信号覆盖到UE时,UE才有机会发送前导码。而当网络侧收到UE的前导码时,就知道下行最佳波束,因此SSB需要与前导码有一个关联,而前导码都是在PRACH传输时机才能进行发送,则SSB与PRACH传输时机进行了关联。
高层通过参数每个PRACH传输时机关联的SSB数和每个SSB关联的基于竞争的preamble数配置了与每个PRACH传输时机关联的SSB数N(ssb-perRACH-Occasion),以及与每个SSB关联的基于竞争的前导码数R(CB-PreamblesPerSSB)。其中,一个PRACH传输时机上基于竞争的前导码数为R*max(1,N)。
对于N的配置有如下两种:
a)当N<1时,则一个SSB映射到1/N个连续有效的PRACH传输时机(频域),例如:N=1/4,则一个SSB映射4个PRACH传输时机,如图2所示,且R个连续索引的前导码映射到SSBn,每个有效PRACH传输时机从前导码索引0开始。例:R=4,那么每个PRACH传输时机上,与其相关联的同步信号物理广播信道块(Synchronization Signal/Physical broadcast channel block,SS/PBCH block)对应的4个基于竞争的前导码索引为{0,1,2,3};其中,FDM=4表示一个时域PRACH传输时机上有4个PRACH传输时机。图中的每个方框是都是独立的随机接入信道(Random Access Channel,RACH)传输时机,通过时域的下标以及频域的下标标识每个RACH传输时机。
当N=1/2,FDM=4,具体的资源配置可以参照图3所示。
若N=1/4,FDM=8,具体的资源配置可以参照图4所示。
b)N≥1,则N个SSB映射到1个有效的PRACH传输时机频域,例如:N=2,则2个SSB映射1个PRACH传输时机,0≤n≤N-1,每个有效PRACH传输时机从前导码索引开始。例:如图5所示,N=2,则2个SSB映射1个PRACH传输时机,SSB n=0,1;当n=0时,SSB 0的preamble索引从0开始;当n=1时,SSB 1的preamble索引从32开始。其中通过total Number Of RA-Preambles配置,并且必须是N的整数倍。total Number Of RA-Preambles定义的是一个PRACH资源上用于竞争和非竞争随机接入的前导码总数,但不包含用于其它目的前导码,例如:用于系统信息(System Information,SI)请求的前导码。因此此处可以理解为,将一个PRACH传输时机上的个前导码平均分成N份,每份的前R个连续的前导码用于基于竞争的随机接入,并与特定的SS/PBCH block相关联。此时一个PRACH传输时机上基于竞争的前导码数为R*N。
5.下行唤醒信号(Downlink Wake-up signal,DL WUS)
在5G系统中,为了进一步提高UE的省电性能,引入了基于物理下行控制信道(Physical downlink control channel,PDCCH)的唤醒信号。唤醒信号的作用是告知UE在特定的非连续接收(Discontinuous Reception,DRX)的在持续(on Duration)期间,是否需要监听PDCCH。当没有数据的情况,UE可以不需要监听在持续(on Duration)期间的PDCCH,相当于UE在整个DRX长周期中都可以处于休眠状态,从而更进一步的省电。
唤醒信号是一种下行控制信息(Downlink Control Information,DCI),简称DCP(DCI with CRC scrambled by PS-RNTI),其中PS-RNTI是网络为UE分配的专门用于省电特性的RNTI,以该RNTI加扰的DCI,即携带了网络对UE的唤醒/休眠指示。UE根据该指示,决定下一个DRX周期是否启动on Duration定时器,以及是否 进行PDCCH监听。
值得指出的是,本申请实施例所描述的技术不限于长期演进型(Long Term Evolution,LTE)/LTE的演进(LTE-Advanced,LTE-A)系统,还可用于其他无线通信系统,诸如码分多址(Code Division Multiple Access,CDMA)、时分多址(Time Division Multiple Access,TDMA)、频分多址(Frequency Division Multiple Access,FDMA)、正交频分多址(Orthogonal Frequency Division Multiple Access,OFDMA)、单载波频分多址(Single-carrier Frequency Division Multiple Access,SC-FDMA)和其他系统。本申请实施例中的术语“系统”和“网络”常被可互换地使用,所描述的技术既可用于以上提及的系统和无线电技术,也可用于其他系统和无线电技术。以下描述出于示例目的描述了新空口(New Radio,NR)系统,并且在以下大部分描述中使用NR术语,但是这些技术也可应用于NR系统应用以外的应用,如第6代(6th Generation,6G)通信系统。
图1示出本申请实施例可应用的一种无线通信系统的框图。无线通信系统包括终端11和网络侧设备12。其中,终端11可以是手机、平板电脑(Tablet Personal Computer)、膝上型电脑(Laptop Computer)或称为笔记本电脑、个人数字助理(Personal Digital Assistant,PDA)、掌上电脑、上网本、超级移动个人计算机(ultra-mobile personal computer,UMPC)、移动上网装置(Mobile Internet Device,MID)、增强现实(augmented reality,AR)/虚拟现实(virtual reality,VR)设备、机器人、可穿戴式设备(Wearable Device)、车载设备(VUE)、行人终端(PUE)、智能家居(具有无线通信功能的家居设备,如冰箱、电视、洗衣机或者家具等)、游戏机、个人计算机(personal computer,PC)、柜员机或者自助机等终端侧设备,可穿戴式设备包括:智能手表、智能手环、智能耳机、智能眼镜、智能首饰(智能手镯、智能手链、智能戒指、智能项链、智能脚镯、智能脚链等)、智能腕带、智能服装等。需要说明的是,在本申请实施例并不限定终端11的具体类型。网络侧设备12可以包括接入网设备或核心网设备,其中,接入网设备12也可以称为无线接入网设备、无线接入网(Radio Access Network,RAN)、无线接入网功能或无线接入网单元。接入网设备12可以包括基站、WLAN接入点或WiFi节点等,基站可被称为节点B、演进节点B(eNB)、接入点、基收发机站(Base Transceiver Station,BTS)、无线电基站、无线电收发机、基本服务集(Basic Service Set,BSS)、扩展服务集(Extended Service Set,ESS)、家用B节点、家用演进型B节点、发送接收点(Transmitting Receiving Point,TRP)或所述领域中其他某个合适的术语,只要达到相同的技术效果,所述基站不限于特定技术词汇,需要说明的是,在本申请实施例中仅以NR系统中的基站为例进行介绍,并不限定基站的具体类型。
下面结合附图,通过一些实施例及其应用场景对本申请实施例提供的波束选择的方法进行详细地说明。
图6示出了本申请实施例提供的一种波束选择的方法的流程示意图,如图6所示,该波束选择的方法可以包括如下步骤201至步骤203:
步骤201、在第一小区为待唤醒小区的情况下,UE向第一小区发送N个前导码。
在本申请实施例中,上述第一小区与UE所在的服务小区不同。
步骤202、UE根据第一信息,确定第一波束。
在本申请实施例中,上述第一信息与上述UE发送的N个前导码相关。
在本申请实施例中,上述第一信息可以为通过无线资源控制或系统消息配置,也可以是下行信号中的相应指示域配置。
在本申请实施例中,上述第一信息为待唤醒小区中的节能态基站传递给服务小区的。示例性地,上述传递过程通过高层接口实现,如,Xn接口。
在本申请实施例中,上述第一信息包括以下至少之一:
第一SSB;
第一前导码;
定时校准信息;
上述第一小区的小区标识。
在本申请实施例中,上述第一前导码为:上述N个前导码中与上述第一SSB对应的前导码;上述定时校准信息用于校准上述第一小区对应的第一网络侧设备的时间信息。
在本申请实施例中,第一网络侧设备处于节能模式。换句话说,UE在将处于节能模式的第一网络侧设备唤醒的情况下,该第一网络侧设备的第一小区可以认为是待唤醒小区。
步骤203、UE在上述第一波束上传输数据。
在本申请实施例中,第一波束用于收发第一小区的数据。
在本申请实施例中,UE在上述第一波束上传输数据包括以下至少一项:
监测上述第一波束对应的第一PDCCH;
测量上述第一波束对应的第一SSB或第一RS;
在上述第一波束对应的时频资源上发送RACH或PUCCH。
示例性地,上述第一PDCCH包括:第一SSB对应的调度系统信息的PDCCH。
在本申请实施例中,在第一小区为待唤醒小区的情况下,UE向该第一小区发送N个前导码;该第一小区与UE的服务小区不同;UE根据第一信息,确定第一波束;该第一信息与上述N个前导码相关;上述UE在上述第一波束上传输数据。如此,UE可以通过向待唤醒的第一小区发送N个前导码,来得到第一信息,从而确定第一波束,进而可以在该第一波束上传输数据,使得UE与待唤醒第一小区可以快速并建立波束连接。
可选地,在本申请实施例中,上述步骤201“UE向第一小区发送N个前导码”之前,本申请实施例提供的波束选择的方法还包括如下步骤301和步骤302:
步骤301、UE获取第二信息。
步骤302、UE基于上述第二信息,向上述第一小区发送N个前导码。
示例性地,上述第二信息是通过上述第一小区配置的。
示例性地,上述第二信息的配置可以在RRC或系统消息中,也可以在下行信号的指示域中,或者,可以是单独的指示域配置(在RRC中),或者,在已有指示域中添加相关指示域配置。
示例性地,上述第二信息包括以下至少之一:
第一小区的SSB配置;
第一小区的SSB与上述N个前导码间的映射关系;
PRACH传输时机;
上述N个前导码的时频资源。
可以理解的是,上述第二信息可以包括第一小区的预配置信息,该第一小区的预配置信息包括如下至少一项:SSB配置,SSB与preamble的映射关系,Prach occasion,等。
可选地,在本申请实施例中,在第二信息直接包含待发送的N个前导码的时频资源的情况下,UE可以直接基于该N个前导码的时频资源,来向第一小区发送N个前导码。
可选地,在本申请实施例中,在第二信息包含以下至少之一:第一小区的SSB配置、第一小区的SSB与上述N个前导码间的映射关系、PRACH传输时机的情况下,UE可以基于这些信息间接确定出待发送的N个前导码的时频资源,进而可以基于这些时频资源,向第一小区发送N个前导码。
示例性地,上述步骤302“UE基于上述第二信息,向上述第一小区发送N个前导码”,可以包括如下步骤302a和步骤302b:
步骤302a、UE基于上述第二信息,确定N个前导码的时频资源。
步骤302b、UE基于确定的N个前导码的时频资源,向上述第一小区发送N个前导码。
进一步可选地,在本申请实施例中,上述步骤302a中“UE基于上述第二信息,确定N个前导码的时频资源”,可以包括如下步骤302a1和步骤302a2:
步骤302a1、UE基于第二信息和第一规则,确定N个前导码的时频资源。
示例性地,第一规则包括以下至少之一:
规则1:待发送的前导码的数量是基于上述第一小区对应的SSB数量确定的;
规则2:待发送的前导码的时频资源的位置是基于以下内容确定的:
上述第一小区对应的SSB数量,
PRACH传输时机,
上述第一小区对应的每个SSB的RACH传输时机,
msg1-FDM。
示例性地,上述待发送的前导码的数量可以与上述第一小区对应的SSB数量相等,也可以是第一小区对应的SSB数量的倍数。
示例性地,UE在向第一小区发送N个前导码时,可以采用如下至少之一的发送方式进行发送:
方式1:TDM的方式。
例如,如图7中的(a)所示,可以按照时域顺序发送前导码。具体地,在T0至T3时刻依次发送多个前导码。示例地,参照图7中的(a)所示,假设基站在T1时刻收到的preamble序列最强,或者,基站判断在这个时刻收到的preamble最好。则基站可以选择SSB1作为下行beam。
应注意的是,图7中每个方块对应一个时频位置,每个时频位置中的SSB number代表的是在该时频位置下,对应基站发送下行的SSB beam。
方式2:FDM方式。
例如如图7中的(b)所示,可以按照频域顺序发送前导码。具体地,虚线框中的SSB0/1-SSB2/3从下到上的4个频域上,依次在对应的时频位置下,发送对应基站的下行的SSB beam。
示例地,参照图7中的(b)所示,假设基站在F3频域上收到的preamble序列最强,或者基站判断在这个F3频域收到的preamble最好。则基站选择SSB0或者SSB1作为下行beam。进一步地,具体选择哪个beam再根据preamble序列来确定(比如,preamble 0-31代表SSB0,preamble 32-63代表SSB1)。
方式3:先FDM后TDM的方式。
例如,如图7中的(c)所示,可以按照先频域后时域的顺序发送前导码。具体地,虚线框中的SSB0-SSB3先从下到上再从左到右,依次在对应的时频位置下,发送对应基站的下行的SSB beam。
方式4:先TDM后FDM的方式。
例如,如图7中的(d)所示,可以按照先时域后频域的顺序发送前导码。具体地,虚线框中的SSB0-SSB3先从左到右再从下到上,依次在对应的时频位置下,发送对应基站的下行的SSB波束。
可选地,在本申请实施例中,上述步骤301中“UE接收第二信息”,可以包括如下步骤301a:
步骤301a、UE获取第一网络侧设备发送的第二信息。
示例性地,上述第一网络侧设备处于节能模式。
示例性地,上述第一网络侧设备可以为待唤醒的第一小区对应的节能态基站。
示例性地,上述第二信息是第一网络侧设备发送至UE所在服务小区对应的第二网络侧设备,再由第二网络侧设备发送给UE。
可选地,在本申请实施例中,第一网络侧设备在接收到N个前导码后,可以基于该N个前导码确定出第一波束,然后,通过第二网络侧设备将用于指示第一波束的第一信息发送至UE,使得UE可以直接基于该第一信息,直接确定出第一波束。
可选地,在本申请实施例中,UE按照特定规则自行确定出第一波束。
示例性地,在上述步骤202“UE根据第一信息,确定第一波束”之前,本申请实施例提供的波束选择的方法还包括如下步骤401:
步骤A1、UE在发送每个前导码之后检测下行信号。
示例性地,UE在每次发送完前导码后,会在第一预定时间内检测下行信号。
示例性地,上述第一预定时间为服务小区通过RRC或系统消息,或者下行信号的相关指示域配置给UE。
步骤402、UE基于检测到的上述下行信号的信号质量,确定第一波束。
示例性地,上述第一信息包括下行信号的信号质量。换句话说,UE通过对发送完前导码后的预定时间段内的下行信号进行检测,从而自行确定出第一波束。
示例性地,上述下行信号的信号质量包括以下至少之一:参考信号接收功率(Reference Signal Received Power,RSRP),信号与干扰加噪声比(signal-to-noise and interference ratio,SINR),信噪比(signal-to-noise ratio,SNR)等。
在一种可能的示例中,UE可以从所检测到的下行信号中,选择一个信号质量最好的接收波束,来作为第一波束。
在另一种可能的示例中,UE也可以根据当前最好的信号质量对应的波束,以及之前的所使用的波束历史信息综合考虑,再选择一个波束。例如,之前所使用的波束1,而UE目前收到的多个波束,分别是波束1、波束2、波束3,其信号质量大小是波束2>波束1>波束3,此时,UE会选择波束1作为接收波束。
可选地,在本申请实施例中,上述步骤401的过程中,即在UE检测下行信号的过程中,本申请实施例提供的波束选择的方法还包括如下步骤A1:
步骤A1、在满足第一条件的情况下,上述UE重新发送上述N个前导码。
示例性地,上述第一条件包括以下任一项:
条件1:UE在发送上述前导码后的第一预定时间内未检测到下行信号;
条件2:UE检测到的下行信号的信号质量不满足预定条件。
示例性地,上述第一预定时间为服务小区通过RRC或系统消息,或者下行信号的相关指示域配置给UE。
示例性地,上述预定条件为检测到的下行信号的RSRP/SINR/SNR低于预定阈值。
示例性地,上述预定阈值由协议预配置。
可选地,在本申请实施例中,上述步骤A1的过程中,本申请实施例提供的波束选择的方法还包括如下步骤B1:
步骤B1、若UE多次重复发送上述N个前导码,均未能检测到下行信号,则UE停止发送上述N个前导码。
示例性地,上述多次重复发送的次数由协议预配置。
如此,UE可以选择自行检测到的信号质量最好的波束,作为第一波束,并在该波束上进行数据的传输。
图8示出了本申请实施例提供的一种波束选择的方法的流程示意图,如图8所示,该波束选择的方法可以包括如下步骤501至步骤503:
步骤501、第一网络侧设备接收UE发送的N个前导码。
步骤502、第一网络侧设备基于上述N个前导码,确定第一波束。
步骤503、第一网络侧设备向第二网络侧设备发送第一信息。
步骤504、第二网络侧设备向UE发送第一信息。
步骤505、UE基于第一信息确定第一波束。
步骤506、UE在上述第一波束上传输数据。
在本申请实施例中,上述第一信息用于指示上述第一波束,上述第一网络侧设备处于节能模式。
在本申请实施例中,第一网络侧设备为节能态基站。
在本申请实施例中,上述第二网络侧设备对应的小区包括UE所在的服务小区,即上述第二网络侧设备为UE所在的服务小区对应的基站。
需要说明的是,上述第一信息的详细描述可以参照图6所示的实施例中的第一信息的相关描述,此处不再赘述。
可选地,在本申请实施例中,上述步骤502的过程中,本申请实施例提供的波束选择的方法可以包括如下步骤502a:
步骤502a、第一网络侧设备基于上述N个前导码的传输信道的信道质量,确定第一波束。
在一种可能的示例中,第一网络侧设备在相应位置接收N个前导码,并选择一个信道质量最好的前导码,即,选择一个RSRP/SINR高于预定阈值或门限的前导码。
在另一种可能的示例中,第一网络侧设备也可以根据当前信道质量最好的前导码,以及之前所接收到的前导码并使用的历史信息综合考虑,再选择一个前导码,并基于该前导码确定第一波束。例如,之前所使用的前导码1,而UE目前收到的多个信道对应前导码,分别是信道1、信道2、信道3,其信号质量大小是信道2>信道1>信道3,此时,UE会选择信道1对应的前导码,并将该前导码对应的波束作为接收波束。
可选地,在本申请实施例中,上述步骤501之前,本申请实施例提供的波束选择的方法还包括如下步骤C1:
步骤C1、第一网络侧设备为UE配置第二信息。
示例性地,上述第二信息包括以下至少之一:
上述第一小区的SSB配置;
上述第一小区的SSB与N个前导码间的映射关系;
PRACH传输时机;
上述N个前导码的时频资源。
示例性地,上述第二信息是第一网络侧设备通过RRC或者下行信号配置给UE。
示例性地,下行信号包括:SSB,系统信息块1(System Information Block,SIB1),PDCCH,物理下行共享信道(Physical downlink shared channel,PDSCH),CSI-RS等。
可选地,在本申请实施例中,上述步骤503之前,本申请实施例提供的波束选择的方法还包括如下步骤D1:
步骤D1、第一网络侧设备接收UE在上述第一波束对应的时频资源上发送的唤醒信号。
示例性地,上述唤醒信号包括以下至少之一:
第一波束的前导码;
第一波束的PUCCH/SR。
在本申请实施例中,第一网络侧设备接收UE发送的N个前导码;从而,第一网络侧设备基于UE发送的N个前导码,确定第一波束;然后,第一网络侧设备向第二网络侧设备发送用于指示上述第一波束的第一信息,其中,第一网络侧设备处于节能模式;第二网络侧设备对应的小区包括UE的服务小区。如此,第一网络侧设备可以通过接收UE发送的N个前导码,来确定第一波束,从而将用于指示第一波束的第一信息发送给第二网络侧设备,进而可以使得网络侧设备在该第一波束上传输数据,使得UE与待唤醒第一小区可以快速并建立波束连接。
以下将以两个实施例来对本申请实施例提供的技术方案进行示例性说明。
实施例1:
本实施例主要考虑UE向第一网络侧设备发送的唤醒信号是前导码的情况。
本实施例的前提是:UE位于服务小区下,且处于连接态。有一个邻小区处于节能模式,即,该小区可能不发送下行信号,但是可以接收部分上行信号。
举例说明,针对第一信息指示第一波束的场景,本申请实施例提供的波束选择的方法,具体的包括以下步骤S1至步骤S6:
步骤S1:服务小区(即第二网络侧设备)将处于节能模式的基站(即第一网络侧设备)SSB个数,SSB与前导码的映射关系,PRACH传输时机,等等,通过RRC或者下行信号配置给UE。上述下行信号包括:SSB,SIB1,PDCCH,PDSCH,CSI-RS等。
示例性地,若处于节能模式的基站的SSB与前导码的映射关系与当前服务小区一致,即完全相同。则服务小区无需另外配置节能基站(即第一网络侧设备)的SSB与前导码的映射关系,PRACH传输时机,等等。只需要将该一致信息通过RRC或者下行信号配置给UE即可。
步骤S2:UE根据上述的节能模式的基站配置的信息,以及第一规则在相应的位置发送N个前导码。第一规则如下:
规则1:待发送的前导码的数量根据节能态基站的SSB个数确定:可以相等,也可以为其倍数。
规则2:待发送的前导码的时频位置根据SSB个数,PRACH传输时机,第一小区对应的每个SSB的RACH传输时机,msg1-FDM共同确定。
UE在向第一小区发送N个前导码时,可以采用如下至少之一的发送方式进行发送:
方式1:TDM的方式;
方式2:FDM方式;
方式3:先FDM后TDM的方式;
方式4:先TDM后FDM的方式。
具体可以参照上述图7所示。
步骤S3:节能态基站在相应位置接收N个前导码,并选择一个信道质量最好的前导码。即,选择一个RSRP/SINR高于一定门限/阈值的前导码;
或者,节能态基站根据当前接收的N个前导码,以及之前所接收到的前导码并使用的历史信息综合考虑,再选择一个前导码。
步骤S4:节能态基站将所选择的前导码和/或该前导码所对应的SSB(也就是下行的波束),以及定时校准等信息同步给服务小区。
步骤S5:服务小区将该波束信息,以及定时校准等信息配置给UE。该配置方式,可以为通过RRC配置,或者下行信号中的相应指示域配置。
步骤S6:UE确定上/下行波束后,在该波束下进行数据的传输。
实施例2:
举例说明,针对第一信息为下行信号的场景,即UE自行确定第一波束的情况下,本申请实施例提供的波束选择的方法,具体的包括以下步骤S1至步骤S7:
步骤S1:服务小区(即第二网络侧设备)将处于节能模式的基站(即第一网络侧设备)SSB个数,SSB与前导码的映射关系,PRACH传输时机,等等,通过RRC或者下行信号配置给UE。上述下行信号包括:SSB,SIB1,PDCCH,PDSCH,CSI-RS等。
示例性地,若处于节能模式的基站的SSB与前导码的映射关系与当前服务小区一致,即完全相同。则服务小区无需另外配置节能基站(即第一网络侧设备)的SSB与前导码的映射关系,PRACH传输时机,等等。只需要将该一致信息通过RRC或者下行信号配置给UE即可。
步骤S2:UE根据上述的节能模式的基站配置的信息,以及第一规则在相应的位置发送N个前导码。
需要说明的是,第一规则和发送方式的相关描述可以参照实施例一中的描述内容,此处不再赘述。
步骤S3:节能态基站在相应位置接收N个前导码,并选择一个信道质量最好的前导码。即,选择一个RSRP/SINR高于一定门限/阈值的前导码。
步骤S4:节能态基站(即第一网络侧设备)确定下行波束后,在一定时间内使用重复(repetition)的方式发送该波束。
步骤S5:UE在发送前导码后的第一预定时间内检测下行信号,并根据检测到的下行信号确定第一波束。比如下行信号质量最好的接收波束(Rx beam)为第一波束,其中,第一预定时间为服务小区通过RRC或者下行信号的相关指示域配置给UE;
或者,UE根据当前最好的信号质量对应的波束,以及之前的所使用的波束历史信息综合考虑,再选择一个波束。
步骤S6:UE确定上/下行波束后,在该波束下进行数据的传输。
步骤S7:若UE在发送前导码后的第一预定时间内没有检测到下行信号,或检测到的下行信号的信号质量(例如,RSRP/SINR/SNR)低于一定阈值,则UE重新发送N个前导码。若多次发送后,都未能检测到下行信号,则UE停止发送。
如此,在唤醒节能态基站之前,通过N个前导码来快速确定出第一波束,使得UE与待唤醒第一小区可以快速建立波束连接。
本申请实施例提供的波束选择的方法,执行主体可以为波束选择的装置。本申请实施例中以波束选择的装置执行波束选择的方法为例,说明本申请实施例提供的波束 选择的装置。
本申请实施例提供一种波束选择的装置,如图9所示,该波束选择的装置600包括:发送模块601、处理模块602和传输模块603,其中:该发送模块601,用于在第一小区为待唤醒小区的情况下,向第一小区发送N个前导码;该第一小区与UE的服务小区不同;该处理模块602,用于根据第一信息,确定第一波束;该第一信息与上述发送的N个前导码相关;该传输模块603,用于在上述第一波束上传输数据。
可选地,在本申请实施例中,第一信息包括以下至少之一:第一SSB;第一前导码;定时校准信息;上述第一小区的小区标识;其中,第一前导码为:上述N个前导码中与第一SSB对应的前导码;上述定时校准信息用于校准上述第一小区对应的第一网络侧设备的时间信息,第一网络侧设备处于节能模式。
可选地,在本申请实施例中,结合图9,如图10所示,波束选择的装置600还包括:获取模块604;该获取模块604,用于获取第二信息;上述发送模块601,具体用于基于上述第二信息,向上述第一小区发送N个前导码;其中,第二信息是通过上述第一小区配置的。
可选地,在本申请实施例中,第二信息包括以下至少之一:第一小区的SSB配置;第一小区的SSB与上述N个前导码间的映射关系;PRACH传输时机;上述N个前导码的时频资源。
可选地,在本申请实施例中,上述处理模块602,还用于基于上述第二信息,确定上述N个前导码的时频资源;上述发送模块601,具体用于基于确定的上述N个前导码的时频资源,向上述第一小区发送N个前导码。
可选地,在本申请实施例中,上述处理模块602,具体用于基于上述第二信息和第一规则,确定上述N个前导码的时频资源;其中,第一规则包括以下至少之一:
待发送的前导码的数量是基于上述第一小区对应的SSB数量确定的;待发送的前导码的时频资源的位置是基于以下内容确定的上述第一小区对应的SSB数量,PRACH传输时机,上述第一小区对应的每个SSB的RACH传输时机,msg1-FDM。
可选地,在本申请实施例中,上述获取模块604,具体用于获取第一网络侧设备发送的第二信息;其中,第一网络侧设备处于节能模式。
可选地,在本申请实施例中,结合图9,如图11所示,波束选择的装置7还包括:检测模块605;该检测模块605,用于在发送每个上述前导码之后检测下行信号;上述处理模块602,具体用于基于检测到的上述下行信号的信号质量,确定第一波束;其中,第一信息包括下行信号的信号质量。
可选地,在本申请实施例中,上述发送模块601,还用于在满足第一条件的情况下,重新发送上述N个前导码;其中,第一条件包括以下任一项:UE在发送上述前导码后的第一预定时间内未检测到下行信号;UE检测到的下行信号的信号质量不满足预定条件。
可选地,在本申请实施例中,上述发送模块601,还用于若多次重复发送上述N个前导码,均未能检测到下行信号,则停止发送上述N个前导码。
可选地,在本申请实施例中,UE在上述第一波束上传输数据,包括以下至少之一:
监测上述第一波束对应的第一PDCCH;
测量上述第一波束对应的第一SSB或第一RS;
在上述第一波束对应的时频资源上发送RACH或PUCCH。
可选地,在本申请实施例中,上述第一PDCCH包括:上述第一SSB对应的调度系统信息的PDCCH。
在本申请实施例提供的波束选择的装置中,该装置在第一小区为待唤醒小区的情况下,向该第一小区发送N个前导码;该第一小区与UE的服务小区不同;并根据第一信息,确定第一波束;该第一信息与上述N个前导码相关;在上述第一波束上传输数据。如此,UE可以通过向待唤醒的第一小区发送N个前导码,来得到第一信息,从而确定第一波束,进而可以在该第一波束上传输数据,使得UE与待唤醒第一小区可以快速并建立波束连接。
本申请实施例提供一种波束选择的装置,如图12所示,该波束选择的装置700 包括:接收模块701、处理模块702和发送模块703,其中:该接收模块701,用于接收UE发送的N个前导码;该处理模块702,用于基于上述接收的N个前导码,确定第一波束;该发送模块703,用于向第二网络侧设备发送第一信息;其中,第一信息用于指示上述第一波束,第一网络侧设备处于节能模式;第二网络侧设备对应的小区包括UE的服务小区。
可选地,在本申请实施例中,上述处理模块702,具体用于基于上述N个前导码的传输信道的信道质量,确定第一波束。
可选地,在本申请实施例中,第一信息包括以下至少之一:第一SSB;第一前导码;定时校准信息;第一小区的小区标识;其中,第一小区为第一网络侧设备对应的小区中UE待唤醒的小区;第一前导码为:上述N个前导码中与第一SSB对应的前导码;定时校准信息用于校准上述第一小区对应的第一网络侧设备的时间信息。
可选地,在本申请实施例中,结合图12,如图13所示,波束选择的装置700还包括:配置模块704;该配置模块704,用于为UE配置第二信息;其中,第二信息包括以下至少之一:第一小区的SSB配置;第一小区的SSB与上述N个前导码间的映射关系;PRACH传输时机;上述N个前导码的时频资源。
可选地,在本申请实施例中,上述接收模块701,还用于接收UE在上述第一波束对应的时频资源上发送的唤醒信号;其中,唤醒信号包括以下至少之一:第一波束的前导码;第一波束的PUCCH。
在本申请实施例提供的波束选择的装置中,该装置接收UE发送的N个前导码;从而,基于UE发送的N个前导码,确定第一波束;然后,向第二网络侧设备发送用于指示第一波束的第一信息,其中,第一网络侧设备处于节能模式;第二网络侧设备对应的小区包括UE的服务小区。如此,第一网络侧设备可以通过接收UE发送的N个前导码,来确定第一波束,从而将用于指示第一波束的第一信息发送给第二网络侧设备,进而可以使得网络侧设备在该第一波束上传输数据,使得UE与待唤醒第一小区可以快速并建立波束连接。
本申请实施例中的波束选择的装置可以是电子设备,例如具有操作系统的电子设备,也可以是电子设备中的部件,例如集成电路或芯片。该电子设备可以是终端,也可以为除终端之外的其他设备。示例性的,终端可以包括但不限于上述所列举的终端11的类型,其他设备可以为服务器、网络附属存储器(Network Attached Storage,NAS)等,本申请实施例不作具体限定。
本申请实施例提供的波束选择的装置能够实现图9至图13的方法实施例实现的各个过程,并达到相同的技术效果,为避免重复,这里不再赘述。
可选的,如图14所示,本申请实施例还提供一种通信设备800,包括处理器801和存储器802,存储器802上存储有可在所述处理器801上运行的程序或指令,例如,该通信设备800为终端时,该程序或指令被处理器801执行时实现上述波束选择的方法实施例的各个步骤,且能达到相同的技术效果。该通信设备800为网络侧设备时,该程序或指令被处理器801执行时实现上述波束选择的方法实施例的各个步骤,且能达到相同的技术效果,为避免重复,这里不再赘述。
本申请实施例还提供一种终端,包括处理器和通信接口,其中,所述通信接口用于在第一小区为待唤醒小区的情况下,向该第一小区发送N个前导码;该第一小区与UE的服务小区不同;所述处理器用于根据第一信息,确定第一波束;该第一信息与上述N个前导码相关;UE在上述第一波束上传输数据。该终端实施例与上述终端侧方法实施例对应,上述方法实施例的各个实施过程和实现方式均可适用于该终端实施例中,且能达到相同的技术效果。具体地,图15为实现本申请实施例的一种终端的硬件结构示意图。
该终端100包括但不限于:射频单元101、网络模块102、音频输出单元103、输入单元104、传感器105、显示单元106、用户输入单元107、接口单元108、存储器109以及处理器110等中的至少部分部件。
本领域技术人员可以理解,终端100还可以包括给各个部件供电的电源(比如电池),电源可以通过电源管理系统与处理器110逻辑相连,从而通过电源管理系统实现管理充电、放电、以及功耗管理等功能。图15中示出的终端结构并不构成对终端 的限定,终端可以包括比图示更多或更少的部件,或者组合某些部件,或者不同的部件布置,在此不再赘述。
应理解的是,本申请实施例中,输入单元104可以包括图形处理单元(Graphics Processing Unit,GPU)1 041和麦克风1042,图形处理器1041对在视频捕获模式或图像捕获模式中由图像捕获装置(如摄像头)获得的静态图片或视频的图像数据进行处理。显示单元106可包括显示面板1061,可以采用液晶显示器、有机发光二极管等形式来配置显示面板1061。用户输入单元107包括触控面板1071以及其他输入设备1072中的至少一种。触控面板1071,也称为触摸屏。触控面板1071可包括触摸检测装置和触摸控制器两个部分。其他输入设备1072可以包括但不限于物理键盘、功能键(比如音量控制按键、开关按键等)、轨迹球、鼠标、操作杆,在此不再赘述。
本申请实施例中,射频单元101接收来自网络侧设备的下行数据后,可以传输给处理器110进行处理;另外,射频单元101可以向网络侧设备发送上行数据。通常,射频单元101包括但不限于天线、放大器、收发信机、耦合器、低噪声放大器、双工器等。
存储器109可用于存储软件程序或指令以及各种数据。存储器109可主要包括存储程序或指令的第一存储区和存储数据的第二存储区,其中,第一存储区可存储操作系统、至少一个功能所需的应用程序或指令(比如声音播放功能、图像播放功能等)等。此外,存储器109可以包括易失性存储器或非易失性存储器,或者,存储器109可以包括易失性和非易失性存储器两者。其中,非易失性存储器可以是只读存储器(Read-Only Memory,ROM)、可编程只读存储器(Programmable ROM,PROM)、可擦除可编程只读存储器(Erasable PROM,EPROM)、电可擦除可编程只读存储器(Electrically EPROM,EEPROM)或闪存。易失性存储器可以是随机存取存储器(Random Access Memory,RAM),静态随机存取存储器(Static RAM,SRAM)、动态随机存取存储器(Dynamic RAM,DRAM)、同步动态随机存取存储器(Synchronous DRAM,SDRAM)、双倍数据速率同步动态随机存取存储器(Double Data Rate SDRAM,DDRSDRAM)、增强型同步动态随机存取存储器(Enhanced SDRAM,ESDRAM)、同步连接动态随机存取存储器(Synch link DRAM,SLDRAM)和直接内存总线随机存取存储器(Direct Rambus RAM,DRRAM)。本申请实施例中的存储器109包括但不限于这些和任意其它适合类型的存储器。
处理器110可包括一个或多个处理单元;可选的,处理器110集成应用处理器和调制解调处理器,其中,应用处理器主要处理涉及操作系统、用户界面和应用程序等的操作,调制解调处理器主要处理无线通信信号,如基带处理器。可以理解的是,上述调制解调处理器也可以不集成到处理器110中。
其中,射频单元101,用于在第一小区为待唤醒小区的情况下,向第一小区发送N个前导码;该第一小区与UE的服务小区不同;处理器110,用于根据第一信息,确定第一波束;该第一信息与上述发送的N个前导码相关;上述处理器110,用于在上述第一波束上传输数据。
可选地,在本申请实施例中,第一信息包括以下至少之一:第一SSB;第一前导码;定时校准信息;上述第一小区的小区标识;其中,第一前导码为:上述N个前导码中与第一SSB对应的前导码;上述定时校准信息用于校准上述第一小区对应的第一网络侧设备的时间信息,第一网络侧设备处于节能模式。
可选地,在本申请实施例中,波束选择的装置600还包括:射频单元101;该射频单元101,用于获取第二信息;上述射频单元101,具体用于基于上述第二信息,向上述第一小区发送N个前导码;其中,第二信息是通过上述第一小区配置的。
可选地,在本申请实施例中,第二信息包括以下至少之一:第一小区的SSB配置;第一小区的SSB与上述N个前导码间的映射关系;PRACH传输时机;上述N个前导码的时频资源。
可选地,在本申请实施例中,上述处理器110,还用于基于上述第二信息,确定上述N个前导码的时频资源;上述射频单元101,具体用于基于确定的上述N个前导码的时频资源,向上述第一小区发送N个前导码。
可选地,在本申请实施例中,上述处理器110,具体用于基于上述第二信息和第一规则,确定上述N个前导码的时频资源;其中,第一规则包括以下至少之一:待发送的前导码的数量是基于上述第一小区对应的SSB数量确定的;待发送的前导码的时频资源的位置是基于以下内容确定的上述第一小区对应的SSB数量,PRACH传输时机,上述第一小区对应的每个SSB的RACH传输时机,msg1-FDM。
可选地,在本申请实施例中,上述射频单元101,具体用于获取第一网络侧设备发送的第二信息;其中,第一网络侧设备处于节能模式。
可选地,在本申请实施例中,上述处理器110,用于在发送每个上述前导码之后检测下行信号;上述处理器110,具体用于基于检测到的上述下行信号的信号质量,确定第一波束;其中,第一信息包括下行信号的信号质量。
可选地,在本申请实施例中,上述射频单元101,还用于在满足第一条件的情况下,重新发送上述N个前导码;其中,第一条件包括以下任一项:UE在发送上述前导码后的第一预定时间内未检测到下行信号;UE检测到的下行信号的信号质量不满足预定条件。
可选地,在本申请实施例中,上述射频单元101,还用于若多次重复发送上述N个前导码,均未能检测到下行信号,则停止发送上述N个前导码。
可选地,在本申请实施例中,UE在上述第一波束上传输数据,包括以下至少之一:
监测上述第一波束对应的第一PDCCH;
测量上述第一波束对应的第一SSB或第一RS;
在上述第一波束对应的时频资源上发送RACH或PUCCH。
可选地,在本申请实施例中,上述第一PDCCH包括:上述第一SSB对应的调度系统信息的PDCCH。
在本申请实施例提供的终端中,该终端在第一小区为待唤醒小区的情况下,向该第一小区发送N个前导码;该第一小区与UE的服务小区不同;并根据第一信息,确定第一波束;该第一信息与上述N个前导码相关;在上述第一波束上传输数据。如此,UE可以通过向待唤醒的第一小区发送N个前导码,来得到第一信息,从而确定第一波束,进而可以在该第一波束上传输数据,使得UE与待唤醒第一小区可以快速并建立波束连接。
本申请实施例还提供一种网络侧设备,包括处理器和通信接口,所述通信接口用于在第一小区为待唤醒小区的情况下,向该第一小区发送N个前导码;该第一小区与UE的服务小区不同;所述处理器用于根据第一信息,确定第一波束;该第一信息与上述N个前导码相关;UE在上述第一波束上传输数据。该网络侧设备实施例与上述网络侧设备方法实施例对应,上述方法实施例的各个实施过程和实现方式均可适用于该网络侧设备实施例中,且能达到相同的技术效果。
具体地,本申请实施例还提供了一种网络侧设备。如图16所示,该网络侧设备900包括:天线91、射频装置92、基带装置93、处理器94和存储器95。天线91与射频装置92连接。在上行方向上,射频装置92通过天线91接收信息,将接收的信息发送给基带装置93进行处理。在下行方向上,基带装置93对要发送的信息进行处理,并发送给射频装置92,射频92对收到的信息进行处理后经过天线91发送出去。
以上实施例中网络侧设备执行的方法可以在基带装置93中实现,该基带装置93包括基带处理器。
基带装置93例如可以包括至少一个基带板,该基带板上设置有多个芯片,如图16所示,其中一个芯片例如为基带处理器,通过总线接口与存储器95连接,以调用存储器95中的程序,执行以上方法实施例中所示的网络设备操作。
该网络侧设备还可以包括网络接口96,该接口例如为通用公共无线接口(common public radio interface,CPRI)。
具体地,本发明实施例的网络侧设备900还包括:存储在存储器95上并可在处理器94上运行的指令或程序,处理器94调用存储器95中的指令或程序执行图7所示各模块执行的方法,并达到相同的技术效果,为避免重复,故不在此赘述。
本申请实施例还提供一种可读存储介质,所述可读存储介质上存储有程序或指令,该程序或指令被处理器执行时实现上述波束选择的方法实施例的各个过程,且能达到相同的技术效果,为避免重复,这里不再赘述。
其中,所述处理器为上述实施例中所述的终端中的处理器。所述可读存储介质,包括计算机可读存储介质,如计算机只读存储器ROM、随机存取存储器RAM、磁碟或者光盘等。
本申请实施例另提供了一种芯片,所述芯片包括处理器和通信接口,所述通信接口和所述处理器耦合,所述处理器用于运行程序或指令,实现上述波束选择的方法实施例的各个过程,且能达到相同的技术效果,为避免重复,这里不再赘述。
应理解,本申请实施例提到的芯片还可以称为系统级芯片,系统芯片,芯片系统或片上系统芯片等。
本申请实施例另提供了一种计算机程序/程序产品,所述计算机程序/程序产品被存储在存储介质中,所述计算机程序/程序产品被至少一个处理器执行以实现上述波束选择的方法实施例的各个过程,且能达到相同的技术效果,为避免重复,这里不再赘述。
本申请实施例还提供了一种通信系统,包括:终端及网络侧设备,所述终端可用于执行如上所述的波束选择的方法的步骤,所述网络侧设备可用于执行如上所述的波束选择的方法的步骤。
需要说明的是,在本文中,术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含,从而使得包括一系列要素的过程、方法、物品或者装置不仅包括那些要素,而且还包括没有明确列出的其他要素,或者是还包括为这种过程、方法、物品或者装置所固有的要素。在没有更多限制的情况下,由语句“包括一个……”限定的要素,并不排除在包括该要素的过程、方法、物品或者装置中还存在另外的相同要素。此外,需要指出的是,本申请实施方式中的方法和装置的范围不限按示出或讨论的顺序来执行功能,还可包括根据所涉及的功能按基本同时的方式或按相反的顺序来执行功能,例如,可以按不同于所描述的次序来执行所描述的方法,并且还可以添加、省去、或组合各种步骤。另外,参照某些示例所描述的特征可在其他示例中被组合。
通过以上的实施方式的描述,本领域的技术人员可以清楚地了解到上述实施例方法可借助软件加必需的通用硬件平台的方式来实现,当然也可以通过硬件,但很多情况下前者是更佳的实施方式。基于这样的理解,本申请的技术方案本质上或者说对现有技术做出贡献的部分可以以计算机软件产品的形式体现出来,该计算机软件产品存储在一个存储介质(如ROM/RAM、磁碟、光盘)中,包括若干指令用以使得一台终端(可以是手机,计算机,服务器,空调器,或者网络设备等)执行本申请各个实施例所述的方法。
上面结合附图对本申请的实施例进行了描述,但是本申请并不局限于上述的具体实施方式,上述的具体实施方式仅仅是示意性的,而不是限制性的,本领域的普通技术人员在本申请的启示下,在不脱离本申请宗旨和权利要求所保护的范围情况下,还可做出很多形式,均属于本申请的保护之内。

Claims (37)

  1. 一种波束选择的方法,包括:
    在第一小区为待唤醒小区的情况下,用户设备UE向所述第一小区发送N个前导码;所述第一小区与所述UE的服务小区不同;
    所述UE根据第一信息,确定第一波束;所述第一信息与所述N个前导码相关;
    所述UE在所述第一波束上传输数据。
  2. 根据权利要求1所述的方法,其中,所述第一信息包括以下至少之一:
    第一同步信号块SSB;
    第一前导码;
    定时校准信息;
    所述第一小区的小区标识;
    其中,所述第一前导码为:所述N个前导码中与所述第一SSB对应的前导码;所述定时校准信息用于校准所述第一小区对应的第一网络侧设备的时间信息,所述第一网络侧设备处于节能模式。
  3. 根据权利要求1所述的方法,其中,所述UE向所述第一小区发送N个前导码之前,所述方法还包括:
    所述UE获取第二信息;
    所述UE向所述第一小区发送N个前导码,包括:
    所述UE基于所述第二信息,向所述第一小区发送N个前导码;
    其中,所述第二信息是通过所述第一小区配置的。
  4. 根据权利要求3所述的方法,其中,所述第二信息包括以下至少之一:
    所述第一小区的SSB配置;
    所述第一小区的SSB与所述N个前导码间的映射关系;
    物理随机接入信道PRACH传输时机;
    所述N个前导码的时频资源。
  5. 根据权利要求3所述的方法,其中,所述UE基于所述第二信息,向所述第一小区发送N个前导码,包括:
    所述UE基于所述第二信息,确定所述N个前导码的时频资源;
    所述UE基于确定的所述N个前导码的时频资源,向所述第一小区发送N个前导码。
  6. 根据权利要求5所述的方法,其中,所述UE基于所述第二信息,确定所述N个前导码的时频资源,包括:
    所述UE基于所述第二信息和第一规则,确定所述N个前导码的时频资源;
    其中,所述第一规则包括以下至少之一:
    待发送的前导码的数量是基于所述第一小区对应的SSB数量确定的;
    待发送的前导码的时频资源的位置是基于以下内容确定的:所述第一小区对应的SSB数量,PRACH传输时机,所述第一小区对应的每个SSB的随机接入信道RACH传输时机,msg1-频分多路复用FDM。
  7. 根据权利要求3所述的方法,其中,所述UE获取第二信息,包括:
    所述UE获取第一网络侧设备发送的第二信息;
    其中,所述第一网络侧设备处于节能模式。
  8. 根据权利要求1所述的方法,其中,所述UE根据第一信息,确定第一波束之前,所述方法还包括:
    所述UE在发送每个所述前导码之后检测下行信号;
    所述UE根据第一信息,确定第一波束,包括:
    所述UE基于检测到的所述下行信号的信号质量,确定第一波束;
    其中,所述第一信息包括所述下行信号的信号质量。
  9. 根据权利要求8所述的方法,其中,所述方法还包括:
    在满足第一条件的情况下,所述UE重新发送所述N个前导码;
    其中,所述第一条件包括以下任一项:
    所述UE在发送所述前导码后的第一预定时间内未检测到下行信号;
    所述UE检测到的下行信号的信号质量不满足预定条件。
  10. 根据权利要求9所述的方法,其中,所述方法还包括:
    若所述UE多次重复发送所述N个前导码,均未能检测到下行信号,则所述UE停止发送所述N个前导码。
  11. 根据权利要求1所述的方法,其中,所述UE在所述第一波束上传输数据,包括以下至少之一:
    监测所述第一波束对应的第一物理下行控制信道PDCCH;
    测量所述第一波束对应的第一SSB或第一参考信号RS;
    在所述第一波束对应的时频资源上发送RACH或物理上行控制信道PUCCH。
  12. 根据权利要求11所述的方法,其中,所述第一PDCCH包括:所述第一SSB对应的调度系统信息的PDCCH。
  13. 一种波束选择的方法,包括:
    第一网络侧设备接收UE发送的N个前导码;
    所述第一网络侧设备基于所述N个前导码,确定第一波束;
    所述第一网络侧设备向第二网络侧设备发送第一信息;
    其中,所述第一信息用于指示所述第一波束,所述第一网络侧设备处于节能模式;
    所述第二网络侧设备对应的小区包括所述UE的服务小区。
  14. 根据权利要求13所述的方法,其中,所述第一网络侧设备基于所述N个前导码,确定第一波束,包括:
    所述第一网络侧设备基于所述N个前导码的传输信道的信道质量,确定第一波束。
  15. 根据权利要求13所述的方法,其中,所述第一信息包括以下至少之一:
    第一SSB;
    第一前导码;
    定时校准信息;
    第一小区的小区标识;
    其中,所述第一小区为所述第一网络侧设备对应的小区中所述UE待唤醒的小区;
    所述第一前导码为:所述N个前导码中与所述第一SSB对应的前导码;
    所述定时校准信息用于校准所述第一小区对应的所述第一网络侧设备的时间信息。
  16. 根据权利要求13所述的方法,其中,所述第一网络侧设备接收UE发送的N个前导码之前,所述方法还包括:
    所述第一网络侧设备为所述UE配置第二信息;
    其中,所述第二信息包括以下至少之一:
    所述第一小区的SSB配置;
    所述第一小区的SSB与所述N个前导码间的映射关系;
    PRACH传输时机;
    所述N个前导码的时频资源。
  17. 根据权利要求13所述的方法,其中,所述第一网络侧设备向第二网络侧设备发送第一信息之后,所述方法还包括:
    所述第一网络侧设备接收所述UE在所述第一波束对应的时频资源上发送的唤醒信号;
    其中,所述唤醒信号包括以下至少之一:
    所述第一波束的前导码;
    所述第一波束的物理上行控制信道PUCCH。
  18. 一种波束选择的装置,所述装置包括:发送模块、处理模块和传输模块;
    所述发送模块,用于在第一小区为待唤醒小区的情况下,向所述第一小区发送N 个前导码;所述第一小区与UE的服务小区不同;
    所述处理模块,用于根据第一信息,确定第一波束;所述第一信息与所述发送模块发送的所述N个前导码相关;
    所述传输模块,用于在所述处理模块确定的所述第一波束上传输数据。
  19. 根据权利要求18所述的装置,其中,所述第一信息包括以下至少之一:
    第一SSB;
    第一前导码;
    定时校准信息;
    所述第一小区的小区标识;
    其中,所述第一前导码为:所述N个前导码中与所述第一SSB对应的前导码;所述定时校准信息用于校准所述第一小区对应的第一网络侧设备的时间信息,所述第一网络侧设备处于节能模式。
  20. 根据权利要求18所述的装置,其中,所述装置还包括:获取模块;
    所述获取模块,用于获取第二信息;
    所述发送模块,具体用于基于所述获取模块获取的所述第二信息,向所述第一小区发送N个前导码;
    其中,所述第二信息是通过所述第一小区配置的。
  21. 根据权利要求20所述的装置,其中,所述第二信息包括以下至少之一:
    所述第一小区的SSB配置;
    所述第一小区的SSB与所述N个前导码间的映射关系;
    PRACH传输时机;
    所述N个前导码的时频资源。
  22. 根据权利要求20所述的装置,其中,
    所述处理模块,还用于基于所述获取模块获取的所述第二信息,确定所述N个前导码的时频资源;
    所述发送模块,具体用于基于确定的所述N个前导码的时频资源,向所述第一小区发送N个前导码。
  23. 根据权利要求22所述的装置,其中,
    所述处理模块,具体用于基于所述第二信息和第一规则,确定所述N个前导码的时频资源;
    其中,所述第一规则包括以下至少之一:
    待发送的前导码的数量是基于所述第一小区对应的SSB数量确定的;
    待发送的前导码的时频资源的位置是基于以下内容确定的:所述第一小区对应的SSB数量,PRACH传输时机,所述第一小区对应的每个SSB的RACH传输时机,msg1-FDM。
  24. 根据权利要求20所述的装置,其中,
    所述获取模块,具体用于获取第一网络侧设备发送的第二信息;
    其中,所述第一网络侧设备处于节能模式。
  25. 根据权利要求18所述的装置,其中,所述装置还包括:检测模块;
    所述检测模块,用于在发送每个所述前导码之后检测下行信号;
    所述处理模块,具体用于基于所述检测模块检测到的所述下行信号的信号质量,确定第一波束;
    其中,所述第一信息包括所述下行信号的信号质量。
  26. 根据权利要求25所述的装置,其中,
    所述发送模块,还用于在满足第一条件的情况下,重新发送所述N个前导码;
    其中,所述第一条件包括以下任一项:
    所述UE在发送所述前导码后的第一预定时间内未检测到下行信号;
    所述UE检测到的下行信号的信号质量不满足预定条件。
  27. 根据权利要求26所述的装置,其中,
    所述发送模块,还用于若多次重复发送所述N个前导码,均未能检测到下行信号,则停止发送所述N个前导码。
  28. 根据权利要求18所述的装置,其中,所述UE在所述第一波束上传输数据,包括以下至少之一:
    监测所述第一波束对应的第一PDCCH;
    测量所述第一波束对应的第一SSB或第一RS;
    在所述第一波束对应的时频资源上发送RACH或PUCCH。
  29. 根据权利要求28所述的装置,其中,所述第一PDCCH包括:所述第一SSB对应的调度系统信息的PDCCH。
  30. 一种波束选择的装置,所述装置包括:接收模块、处理模块和发送模块;
    所述接收模块,用于接收UE发送的N个前导码;
    所述处理模块,用于基于所述接收模块接收的所述N个前导码,确定第一波束;
    所述发送模块,用于向第二网络侧设备发送第一信息;
    其中,所述第一信息用于指示所述第一波束;
    所述第二网络侧设备对应的小区包括所述UE的服务小区。
  31. 根据权利要求30所述的装置,其中,
    所述处理模块,具体用于基于所述N个前导码的传输信道的信道质量,确定第一波束。
  32. 根据权利要求30所述的装置,其中,所述第一信息包括以下至少之一:
    第一SSB;
    第一前导码;
    定时校准信息;
    第一小区的小区标识;
    其中,所述第一小区为所述第一网络侧设备对应的小区中所述UE待唤醒的小区;
    所述第一前导码为:所述N个前导码中与所述第一SSB对应的前导码;
    所述定时校准信息用于校准所述第一小区对应的所述第一网络侧设备的时间信息。
  33. 根据权利要求30所述的装置,其中,所述装置还包括:配置模块;
    所述配置模块,用于为所述UE配置第二信息;
    其中,所述第二信息包括以下至少之一:
    所述第一小区的SSB配置;
    所述第一小区的SSB与所述N个前导码间的映射关系;
    PRACH传输时机;
    所述N个前导码的时频资源。
  34. 根据权利要求30所述的装置,其中,
    所述接收模块,还用于接收所述UE在所述第一波束对应的时频资源上发送的唤醒信号;
    其中,所述唤醒信号包括以下至少之一:
    所述第一波束的前导码;
    所述第一波束的PUCCH。
  35. 一种UE,包括处理器,存储器及存储在所述存储器上并可在所述处理器上运行的程序或指令,所述程序或指令被所述处理器执行时实现如权利要求1至12任一项所述的波束选择的方法的步骤。
  36. 一种网络侧设备,包括处理器,存储器及存储在所述存储器上并可在所述处理器上运行的程序或指令,所述程序或指令被所述处理器执行时实现如权利要求13至17任一项所述的波束选择的方法的步骤。
  37. 一种可读存储介质,所述可读存储介质上存储程序或指令,所述程序或指令被处理器执行时实现如权利要求1至12任一项所述的波束选择的方法,或者实现如权利要求13至17任一项所述的波束选择的方法的步骤。
PCT/CN2023/100378 2022-06-15 2023-06-15 一种波束选择的方法、终端及网络侧设备 WO2023241647A1 (zh)

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US20190069258A1 (en) * 2017-08-10 2019-02-28 Hyoungsuk Jeon Beam Indication in RACH
CN111385078A (zh) * 2018-12-29 2020-07-07 成都华为技术有限公司 一种辅助小区激活的方法和通信装置
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US20190069258A1 (en) * 2017-08-10 2019-02-28 Hyoungsuk Jeon Beam Indication in RACH
CN111385078A (zh) * 2018-12-29 2020-07-07 成都华为技术有限公司 一种辅助小区激活的方法和通信装置
WO2022151127A1 (zh) * 2021-01-14 2022-07-21 华为技术有限公司 一种波束信息上报与接收方法及装置

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