WO2018028618A1 - 跟踪波束的方法、终端设备和网络侧设备 - Google Patents
跟踪波束的方法、终端设备和网络侧设备 Download PDFInfo
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- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
- H04B7/0868—Hybrid systems, i.e. switching and combining
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Definitions
- the embodiments of the present application relate to the field of wireless communication technologies, and more specifically, to a method for tracking a beam, a terminal device, and a network side device.
- the path loss is proportional to the frequency and distance.
- the frequency used by the communication device increases, the path loss increases at the same distance.
- the maximum path loss value that the entire wireless link can bear is fixed under the premise that the transmitter and the receiver are unchanged. Therefore, when the frequency used by the communication device increases, the effective communication distance between the communication devices is inevitably reduced.
- the use of a high frequency spectrum results in a reduction in cell coverage. The reduction of cell coverage will result in more base station equipment being required to complete coverage under the same coverage area requirements, and network deployment costs will increase. At the same time, the reduction of cell coverage will result in frequent handovers between cells, which will also lead to a decline in user experience.
- Beamforming is a multi-antenna transmission/reception technique that combines signals on multiple antennas to form a narrow beam to obtain transmit/receive gain, which can effectively expand cell coverage.
- the terminal device establishes communication with the network side device in a conventional manner (for example, a wide beam). After the communication is established, the beamforming technology can be used to transmit data between the terminal device and the network side device.
- the beamforming technology can be used to transmit data between the terminal device and the network side device.
- all channels including control channels, random access channels, etc.
- the key problem to be solved is how to maintain beam alignment, that is, tracking in the case of channel changes and terminal equipment movement. Beam.
- the embodiment of the present application provides a method for tracking a beam, a terminal device, and a network side device, so as to transmit information of all channels by using a beamforming technology.
- the embodiment of the present application provides a method for tracking a beam, where the method includes: determining, by a terminal device, N first beam reference quality values, where the N first beam reference quality values respectively correspond to N beams, where N is a positive integer greater than or equal to 1; the terminal device selects M beams from the N beams according to the N first beam reference quality values and a cell to which each of the N beams belongs, where M is greater than Or a positive integer equal to 1 and less than or equal to N, the M beams belong to a camping cell or a serving cell of the terminal device; the terminal device selects M The beam indicates to the network side device that provides service to the terminal device.
- the terminal device can track the detectable beam and report the tracked camped cell or the serving cell's beam to the network side device, so that the network side device can select an appropriate beam from the reported beam.
- a beam for communicating with the terminal device includes: determining, by a terminal device, N first beam reference quality values, where the N first beam reference quality values respectively correspond to N beams
- the terminal device indicates the selected M beams to the network side device, where the terminal device sends the first beam tracking to the network side device.
- the first beam tracking message includes an index of the M beams, where the first beam tracking message is a medium access control MAC layer message. In this way, the terminal device can directly indicate the selected M beams to the network side device through the MAC layer message.
- the method further includes: the terminal device is in an index corresponding to the first target beam And transmitting, by the time-frequency resource and/or the code resource, a random access preamble to the network side device, where the first target beam is a beam with the highest reference quality value of the first beam of the M beams.
- the terminal device can implicitly indicate the beam with the highest beam quality value to the network side device by using the time-frequency resource and/or the code resource of the random access preamble without passing an additional signaling. In this way, signaling overhead can be saved.
- the terminal device may determine a second beam reference quality value of each beam based on multiple first beam reference quality values of each beam.
- the beam reference quality value tracked by the terminal device is a measurement result accumulated after a period of time.
- the second beam tracking message may include an index of a beam of at least one of the cells to which the N beams belong.
- the network side device can obtain the beam quality value of the camped cell and the neighboring cell of the terminal device.
- the network side device can determine not only the cell status of the camping cell or the serving cell of the terminal device, but also the cell status of the neighboring cell that the terminal device can detect.
- the terminal device determines, according to the N second beam reference quality values, a second beam tracking message, including: Determining, by the terminal device, the second beam tracking message according to the N second beam reference quality values, a cell to which each of the N beams belongs, a first preset threshold, and a second preset threshold, where The first preset threshold is greater than the second preset threshold, and the second beam tracking message includes an index of the candidate beam and/or an index of the available beam, where the second beam reference quality value of the candidate beam is greater than or equal to the first preset The threshold, the second beam reference quality value of the available beam is less than the first preset threshold and greater than or equal to the second preset threshold.
- the terminal device directly reports the candidate beam and/or the available beam to the network side device, so that the network side device can select a suitable beam from the received candidate beam and/or available beam and the terminal device. Communicate.
- the second beam tracking message further includes a second beam reference quality value of the candidate beam and/or the available The second beam reference quality value of the beam.
- a sixth possible implementation of the first aspect Determining, by the terminal device, the second beam tracking message according to the N second beam reference quality values, including: the terminal device according to the N second beam reference quality values, a cell to which each of the N beams belongs, and a Determining, by the preset threshold, the second beam tracking message, where the second beam tracking message includes an index of P beams, where a second beam reference quality value of each of the P beams is greater than or equal to the third
- the preset threshold, P is a positive integer greater than or equal to 1 and less than or equal to M.
- the terminal device can report the index of the beam that meets the preset condition (that is, greater than or equal to the third preset threshold) to the network side device, so that the network side device can directly comply with the preset condition.
- the appropriate beam is selected from the beam to communicate with the terminal device.
- the second beam tracking message further includes a second of the N beams that is greater than the third preset threshold Beam reference quality value.
- the terminal device determines, according to the N second beam reference quality values, a second beam tracking message, including: Determining, by the terminal device, at least two reference beams of each of at least one of the cells to which the N beams belong according to the N second beam reference quality values and a cell to which each of the N beams belongs. At least two reference beams of the cells are at least two beams having the highest second reference quality value in the each cell; the terminal device determines the second beam tracking message, the second beam tracking message including the determined each An index of at least two reference beams of a cell.
- the terminal device may directly report the multiple beams with the highest beam reference quality value to the network side device, so that the network side device may select one of the multiple beams with the highest beam quality value.
- the second beam tracking message further includes a second beam reference of the at least two reference beams of each cell Quality value.
- the terminal device determines, according to the N second beam reference quality values, a second beam tracking message, including: The terminal device determines a cell measurement result according to the N second beam reference quality values and a cell to which each of the N beams belongs, where the cell measurement result is each cell in at least one cell of the cells to which the N beams belong. The highest second beam reference quality value; the terminal device determines the second beam tracking message, the second beam tracking message including the cell measurement result.
- the terminal device may determine the cell measurement result according to the result of the beam tracking, and report the measured cell measurement result to the network side device, so that the network side device acquires the cell measurement result tracked by the terminal device.
- the determining, by the N second reference, the second tracking information, the second beam tracking message includes: the terminal The device determines, according to the N second beam reference quality values and a cell to which each of the N beams belongs, at least two reference beams of each of the at least one of the cells to which the N beams belong, the each cell The at least two reference beams are at least two beams having a second beam reference quality value in each of the cells; the terminal device determines a cell measurement result, where the cell measurement result includes a second of the at least two reference beams of the each cell An average of the beam reference quality values; the terminal device determines the second beam tracking message, the second beam tracking message including the cell measurement result.
- the terminal device may determine the cell measurement result according to the result of the beam tracking, and report the measured cell measurement result to the network side device, so that the network side device acquires the cell measurement result tracked by the terminal device.
- the method further includes: The terminal device is based on the N Determining, by the first beam reference quality value, a cell to which each of the N beams belongs, determining a first beam reference quality value that is the highest quality of each of the at least one of the cells to which the N beams belong; the terminal device according to the Determining, by the highest first beam reference quality value of each cell, a second beam reference quality value of each cell; the terminal device sends the second beam reference quality value of each cell as a cell measurement result to the RRC layer message to The network side device.
- the terminal device may determine the cell measurement result according to the result of the beam tracking, and report the measured cell measurement result to the network side device, so that the network side device acquires the cell measurement result tracked by the terminal device.
- the method further includes: the terminal And determining, according to the N first beam reference quality values and the cell to which each of the N beams belongs, the highest at least two first beam references of each of the at least one of the cells to which the N beams belong. An average value of the quality values; the terminal device determines a second beam reference quality of each of the cells according to an average of the highest at least two first beam reference quality values of the each cell; the terminal device uses the cell The second beam reference quality is sent to the network side device as an RRC layer message as a cell measurement result.
- the terminal device may determine the cell measurement result according to the result of the beam tracking, and report the measured cell measurement result to the network side device, so that the network side device acquires the cell measurement result tracked by the terminal device.
- the method further includes: determining, by the terminal device, whether the preset measurement event is met according to the cell measurement result.
- the terminal device may determine whether the preset measurement event is met according to the result of the beam tracking, so as to select the reported content according to the determination result.
- the value of the M is indicated by the network side device to the terminal device .
- the embodiment of the present application provides a method for tracking a beam, where the method includes: the network side device acquires M beams indicated by the terminal device, where the M beams belong to a camping cell or a serving cell of the terminal device, M is a positive integer greater than or equal to 1; the network side device selects one beam from the M beams; the network side device sends a downlink message to the terminal device by using the selected beam.
- the network side device may obtain a beam of the resident cell or the serving cell that belongs to the terminal device that is tracked by the terminal device.
- the network side device acquires the M beams that are indicated by the terminal device, and the network side device receives the first beam tracking message that is sent by the terminal device,
- the first beam tracking message includes an index of the M beams, wherein the first beam tracking message is a MAC layer message.
- the network side device may directly acquire the M beams indicated by the terminal device.
- the method further includes: the network side device receiving the random access preamble sent by the terminal device And determining, by the network side device, the first target beam according to the time-frequency resource and/or the code resource used by the random access preamble, where the first target beam is the highest reference quality value of the first beam in the M beams Beam.
- the network side device may determine the first target beam according to an implicit indication of the terminal device. The network side device can determine the first target beam without receiving additional signaling. In this way, signaling overhead can be saved.
- the method further includes: receiving, by the network side device, a second beam tracking message sent by the terminal device, where the second beam tracking message is an RRC layer message, where the second beam tracking message includes an index of the candidate beam and/or Or an index of the available beam, the second beam reference quality value of the candidate beam is greater than or equal to the first preset threshold, and the second beam reference quality value of the available beam is smaller than the first preset threshold and greater than or equal to the second pre- The threshold is set, and the first preset threshold is greater than the second preset threshold.
- the network side device may directly determine the candidate beam and/or the available beam according to the beam tracking message sent by the terminal device, without determining the candidate beam and/or the available beam according to the preset threshold. In this way, resources of the network side device can be saved.
- the second beam tracking message further includes a second beam reference quality value of the candidate beam and/or the available The second beam reference quality value of the beam.
- the method further includes: the network The side device receives the second beam tracking message sent by the terminal device, where the second beam tracking message is an RRC layer message, where the second beam tracking message includes an index of P beams, and each of the P beams
- the second beam reference quality value is greater than or equal to a third preset threshold, and P is a positive integer greater than or equal to 1 and less than or equal to M.
- the network side device may directly determine, according to the beam tracking message sent by the terminal device, a beam that satisfies the second beam reference quality value greater than or equal to the third preset threshold, without determining that the foregoing is satisfied according to the preset threshold. Conditional beam. In this way, resources of the network side device can be saved.
- the second beam tracking message further includes a second beam reference quality value of the at least one beam.
- the method further includes: the network The side device receives the second beam tracking message sent by the terminal device, where the second beam tracking message is an RRC layer message, where the second beam tracking message includes an index of at least two reference beams respectively belonging to each cell in the at least one cell.
- the at least two reference beams of each cell are at least two beams with the highest second reference quality value in the each cell.
- the network side device may directly determine, according to the beam tracking message sent by the terminal device, multiple beams with the highest beam reference quality in each cell in the at least one cell, without determining the at least one cell by itself.
- the second beam in each cell refers to multiple beams of the highest quality. In this way, resources of the network side device can be saved.
- the second beam tracking message further includes a second beam of the at least two reference beams in each cell Reference quality value.
- the method further includes: the network The side device receives the second beam tracking message sent by the terminal device, where the second beam tracking message is an RRC layer message, where the second beam tracking message includes a cell measurement result, where the cell measurement result is used by each cell in the at least one cell The highest quality second beam reference quality value.
- the network side device can directly obtain the cell measurement result reported by the terminal device, and does not need to determine the cell measurement result by itself. In this way, resources of the network side device can be saved.
- the method further includes: the network The side device receives the second beam tracking message sent by the terminal device, where the second beam tracking message is an RRC layer message, and the second beam tracking message
- the message includes a cell measurement result including an average of second beam reference quality values of at least two reference beams of each of the at least one cell, the at least two reference beams of each cell being the each cell
- the second beam in the reference has at least two beams with the highest quality value.
- the network side device can directly obtain the cell measurement result reported by the terminal device, and does not need to determine the cell measurement result by itself. In this way, resources of the network side device can be saved.
- the method further includes: Receiving, by the network side device, a cell measurement result of each cell in the at least one cell sent by the terminal device, where the cell measurement result of each cell includes a second beam reference quality value of each cell, where the second cell of each cell
- the beam reference quality value is determined based on the highest first beam reference quality value of each cell.
- the network side device can directly obtain the cell measurement result reported by the terminal device, and does not need to determine the cell measurement result by itself. In this way, resources of the network side device can be saved.
- the method further includes: Receiving, by the network side device, a cell measurement result of each cell in the at least one cell sent by the terminal device, where the cell measurement result of each cell is a second beam reference quality value of each cell, and the second cell of each cell
- the beam reference quality is determined based on an average of the highest at least two first beam reference quality values for each cell.
- the value of the M is indicated by the network side device to the terminal device .
- the embodiment of the present application provides a method for tracking a beam, where the method includes: the terminal device sends a beam training request to the network side device by using the first beam; and the terminal device uses the beam training response sent by the network side device, Determining a second beam for communicating with the network side device, wherein the beam training response includes M physical pilot resources, and M is a positive integer greater than or equal to 1.
- the terminal device can select a suitable beam from multiple available beams to communicate with the network side device.
- the method further includes: the terminal device uses N beams respectively Sending, by the N time-frequency resources, a random access preamble to the network side device, where the subframe number and/or the frequency resource number of any two of the N time-frequency resources are different, and N is greater than or equal to a positive integer of 2; the terminal device receives at least one random access response message sent by the network side device; the terminal device according to the RA-RNTI in each random access response message in the at least one random access response message The value determines the first beam from the N beams.
- the terminal device may select one of a plurality of available beams that can be used for communication with the network side device, to use the beam to send a request message to the network side device.
- the terminal device determines, according to the beam training response sent by the network side device,
- the second beam that is communicated by the network side device includes: the terminal device sends a reference signal to the network side device by using M beams respectively on the M physical pilot resources; the terminal device receives the feedback information sent by the network side device, The feedback information includes an index of one or more of the M beams; the terminal device determines the second beam according to the feedback information, wherein the second beam belongs to the one or more beams.
- the terminal device can train the available beam and determine a beam that can be used for communication with the network side device according to the information fed back by the network side device.
- the terminal device uses M beams to the network side respectively on the M physical layer pilot resources. Before the device sends the reference signal, the method further includes: the terminal device selecting M beams from the plurality of available beams. In the above technical solution, the terminal device may select a suitable number of beams for training, so that the number of beams used for training is equal to the physical layer pilot resources allocated by the network side device for the terminal device for the training beam.
- the terminal device determines, according to the beam training response sent by the network side device, Before the second beam is communicated with the network side device, the method further includes: the terminal device indicating the number of available transmit beams to the network side device.
- the terminal device may send the number of available beams to the network side device, so that the network side device determines, according to the number of available beams, the number of physical layer pilot resources that need to be allocated for the terminal device.
- the embodiment of the present application provides a method for tracking a beam, where the method includes: the network side device receives a beam training request sent by the terminal device; the network side device sends a beam training response to the terminal device, where the beam training response includes M physical pilot resources, M is a positive integer greater than or equal to 1.
- the network side device may allocate physical pilot resources for performing beam training to the terminal device, so that the terminal device selects a suitable beam according to the physical pilot resource to communicate with the network side device.
- the method before the network side device receives the beam training request sent by the terminal device, the method further includes: the network side device receiving the N sent by the terminal device a random access preamble, where N is a positive integer greater than or equal to 1; the network side device determines N RA-RANT values according to time-frequency resources of each random access preamble in the N random access preambles The network side device sends N random access responses to the terminal device, and the N random access responses are scrambled using the N RA-RNTI values, respectively.
- the network side device feeds back the available uplink beam to the terminal device, so that the terminal device sends the beam training request to the network side device by using the uplink beam.
- the method further includes: the network side device receiving the terminal device in the M physical guides A reference signal sent by the M beams is respectively used on the frequency resource; the network side device determines a beam quality value of each of the M beams according to the received reference signal; and the network side device is configured according to the beam quality of each beam And determining feedback information, the feedback information including an index of one or more of the M beams.
- the network side device may feed back one or more beams used by the terminal device to communicate with the network side device to the terminal device, so that the terminal device is from the one or more beams. Select the appropriate beam to communicate with the network side device.
- the network side device determines, according to the beam quality value of each beam, the feedback information, including: the network The side device determines, according to the beam quality value of each beam, that the feedback information includes an index of one or more beams with the highest beam quality value; or the network side device determines the feedback information according to the beam quality value of each beam. An index of one or more beams including a beam quality value greater than a predetermined threshold.
- the network side device may directly feed back a beam that satisfies a specific condition to the terminal device, so that the terminal device may directly determine the available uplink beam by using the feedback information. The terminal device does not need to determine the beam that satisfies the specific condition by itself. In this way, the resources of the terminal device can be received.
- the method before the network side device sends the beam training response to the terminal device, the method further The network side device receives the number of available transmit beams sent by the terminal device, and the network side device determines, according to the number of available transmit beams, the number M of physical pilot resources, where M is equal to or smaller than the number of available transmit beams.
- the device on the network side allocates the appropriate number of physical pilot resources to the terminal device, so that the number of physical pilot resources is the same as the number of available transmit beams of the terminal device.
- the embodiment of the present application provides a terminal device, where the terminal device includes various units for implementing the method of the first aspect or any possible implementation manner of the first aspect.
- the embodiment of the present application provides a network side device, where the network side device includes each unit of a method for implementing the second aspect or any possible implementation manner of the second aspect.
- the embodiment of the present application provides a terminal device, where the terminal device includes various units of a method for implementing the third aspect or any possible implementation manner of the third aspect.
- an embodiment of the present application provides a network side device, where the network side device includes each unit of a method for implementing the fourth aspect or any possible implementation manner of the fourth aspect.
- the embodiment of the present application provides a computer readable storage medium storing instructions for implementing the method of the first aspect or any of the possible implementation manners of the first aspect.
- the embodiment of the present application provides a terminal device, where the terminal device includes a memory and a processor, where the memory includes the computer readable storage medium of the ninth aspect, the processor is configured to execute the instruction stored by the computer readable storage medium .
- the embodiment of the present application provides a computer readable storage medium storing instructions for implementing the method of any of the second aspect or the second aspect of the second aspect.
- the embodiment of the present application provides a terminal device, where the terminal device includes a memory and a processor, where the memory includes the computer readable storage medium of the eleventh aspect, the processor is configured to execute the computer readable storage medium storage Instructions.
- the embodiment of the present application provides a computer readable storage medium storing instructions for implementing the method of any one of the third aspect or the third aspect.
- the embodiment of the present application provides a terminal device, where the terminal device includes a memory and a processor, where the memory includes the computer readable storage medium of the thirteenth aspect, the processor is configured to execute the computer readable storage medium storage Instructions.
- the embodiment of the present application provides a computer readable storage medium storing instructions for implementing the method of any of the possible implementations of the fourth aspect or the fourth aspect.
- the embodiment of the present application provides a terminal device, where the terminal device includes a memory and a processor, where the memory includes the computer readable storage medium of the fifteenth aspect, the processor is configured to execute the computer readable storage medium storage Instructions.
- FIG. 1 is a schematic flowchart of a beam tracking method according to an embodiment of the present application.
- Figure 2 is a schematic diagram of feedback of the M beams using the load portion of the MAC CE.
- FIG. 3 is a schematic flowchart of another method for beam tracking according to an embodiment of the present application.
- FIG. 4 is a structural block diagram of a terminal device according to an embodiment of the present application.
- FIG. 5 is a structural block diagram of a network side device according to an embodiment of the present application.
- LTE Long Term Evolution
- FDD Frequency Division Duplex
- TDD Time Division Duplex
- 5G fifth generation
- NR New Radio
- a terminal device which may also be called a user equipment (User Equipment, UE), a mobile terminal (MT), a mobile user equipment, etc., may be connected to one or more via a radio access network (for example, a Radio Access Network, RAN).
- the core network communicates, and the user equipment can be a mobile terminal, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal, for example, can be portable, pocket, handheld, computer built, or in-vehicle Mobile device.
- the network side device may be an eNB or an e-NodeB in LTE, or may be a base station in 5G or NR or a Transmission Reception Point (TRP).
- TRP Transmission Reception Point
- a camping cell may also be referred to as a serving cell or a home cell.
- a cell that the terminal device can select in which system messages and paging messages are monitored.
- the cell selected by the terminal device is the camped cell of the terminal device.
- the terminal device may detect other cells in addition to the selected camping cell, and the other cells may be referred to as neighboring cells of the terminal device.
- FIG. 1 is a schematic flowchart of a beam tracking method according to an embodiment of the present application.
- the terminal device determines N first beam reference quality values, where the N first beam reference quality values respectively correspond to N beams, and N is a positive integer greater than or equal to 1.
- the terminal device can determine the operating frequency during the cell search phase.
- the terminal may detect N beams on the working frequency, wherein the N beams may belong to different cells. For example, one or more beams of the camped cells belonging to the terminal device may be included in the N beams.
- the N beams may also include one or more beams that are not in the neighboring cell of the terminal device.
- the terminal device may have at least one neighboring cell, and each neighboring cell has a corresponding beam.
- the "cell to which the beam belongs" as referred to in the embodiment of the present application refers to a beam that the beam belongs to the network side device serving the cell in the cell.
- the "cell corresponding to the cell” refers to a beam used by the network side device serving the cell in the cell.
- the network side device 1 uses the beam 1, the beam 2, and the beam 3 in the cell A, and the network side device 2 uses the beam 4, the beam 5, and the beam 6 in the cell B. Then, the beam 1 to the beam 3 belong to the cell A, the beam 4 to the beam 6 belong to the cell B, the beam corresponding to the cell A is the beam 1 to the beam 3, and the beam corresponding to the cell B is the beam 4 to the beam 6.
- one network side device may provide services for one or more cells, or may provide services for only one cell, which is not limited in this application.
- the terminal device may respectively determine a first beam reference quality value of each of the N beams.
- the first beam reference quality value of each beam may be determined according to a received power of the reference signal sent by receiving the each beam, for example, may be a reference signal received power (Reference Signal Received) Power, RSRP), can also be the reference signal reception quality (Reference Signal Received Quality, RSRQ) and so on. Therefore, it can be understood that the first beam reference quality value is a beam quality value measured based on physical layer measurements.
- RSRP Reference Signal Received Power
- RSRQ Reference Signal Received Quality
- the first beam reference quality value of each beam may be determined according to a historical first beam reference quality value and a current beam quality value of each beam.
- the first beam reference quality value may be determined by using the following formula:
- a Is the filter coefficient.
- the current beam quality value is a beam quality value based on physical layer measurements. For example, it can be RSRP, RSRQ.
- the Media Access Control (MAC) layer may also be filtered based on the measurement result of the physical layer, and reported according to the filtering, that is, the first beam reference quality value is a MAC layer filtered result.
- the terminal device selects M beams from the N beams according to the N first beam reference quality values and a cell to which each of the N beams belongs, where M is greater than or equal to 1 and less than or A positive integer equal to N, the M beams belonging to the camping cell of the terminal device.
- the terminal device may determine, from the N beams, at least one beam that belongs to the camping cell, and then determine, from the at least one beam, the M with the highest beam reference quality value.
- the value of M may be preset or may be indicated by the network side device to the terminal device. It can be understood that, if the number of the beams that belong to the camping cell determined by the terminal device is less than a preset value or a value indicated by the network side device, the M beams are determined by the terminal device to belong to the camping cell. All beams.
- the terminal device may determine, from the N beams, at least one beam that belongs to the camping cell, and then determine, from the at least one beam, a value greater than the first beam reference quality value.
- the preset threshold is one or more beams.
- the preset threshold may be preset or may be indicated by the network side device to the terminal device.
- the terminal device may determine, from the N beams, at least one beam that belongs to the camping cell, and then determine, from the at least one beam, a value greater than the first beam reference quality value.
- the preset threshold is one or more beams.
- the terminal device may determine, from the one or more beams whose first beam reference quality value is greater than the preset threshold, the M beams with the highest first beam reference quality value.
- the preset threshold may be preset or may be indicated by the network side device to the terminal device.
- the value of M may be preset or may be indicated by the network side device to the terminal device.
- the M devices are determined.
- the beam is all beams that are determined by the terminal device and belong to the camping cell and the first beam reference quality value is greater than the preset threshold.
- the terminal device indicates the selected M beams to the network side device that provides the terminal device with a service.
- Each of the beams detected by the terminal device has a corresponding index, and the terminal device may send the index of the determined M beams to the network side device to indicate the M beams selected by the network side device by the terminal device.
- the network side device may determine, according to an index of the received beam, a beam selected by the terminal device.
- the terminal device may display the index of the M beams displayly, or may implicitly indicate the index of the M beams.
- the terminal device may display an index indicating the M wave speeds.
- the terminal device may send a first beam tracking message to the network side device, where the beam tracking message includes an index of the M beams, where the first beam tracking message is a media access control (MAC). Layer message.
- MAC media access control
- the terminal device can directly indicate the selected M beams to the network side device through the MAC layer message.
- the first beam tracking message may feed back the index of the M beams to the network side device by using a load component of a MAC Control Element (CE).
- Figure 2 is a schematic diagram of feedback of the M beams using the load portion of the MAC CE. As shown in FIG. 2, the number of M is 4. The number of bits occupied by a single beam index can be six. If the terminal device determines that the number of eligible Ms is less than 4, the other locations are filled with invalid values. It can be understood that if the number of beams to be reported exceeds the number of beams that can be carried by one MAC CE, the terminal device can send the index of the M beams to the network side device through multiple MAC CEs.
- the order of the indexes of the beams in the first beam tracking message may be determined according to the first beam reference quality value of each beam.
- the first one of the indexes of the M beams is an index of a beam with the highest beam reference quality value
- the second beam index is the first beam reference quality value. The index of the second highest beam, and so on.
- the network side device can determine the order of the first beam reference quality value of the beam according to the order of the indexes of the beams in the beam tracking message, so that the beam with the highest beam reference quality value can be determined.
- the terminal device may further send the measurement result of the M beams to the network side device.
- the terminal device may send the first beam reference quality value of each of the M beams to the network side device by using the first beam tracking message.
- the terminal device can also use other messages to carry the first beam reference quality value of each of the M beams.
- the terminal device may implicitly indicate an index of the M beams. For example, if the M value is 1, the terminal device may send a random access preamble to the network side device on the time-frequency and/or code resource corresponding to the beam, so as to indicate the one beam to the network-side device.
- the specific process can be similar to step 104.
- the one beam may be the beam with the highest beam reference quality value in the camped cell of the terminal device detected by the terminal device.
- the terminal device can implicitly indicate a beam to the network side device by using the time-frequency resource and/or the code resource of the random access preamble without passing an additional signaling. In this way, signaling overhead can be saved.
- the terminal device can track the detectable beam and report the tracked camped cell beam to the network side device, so that the network side device can select an appropriate beam from the reported beam for the A beam that communicates with the terminal device.
- the network side device may select one or more beams from the M beams indicated by the terminal device.
- the network side device may send a downlink message to the terminal device by using the selected beam.
- the method can also include step 104.
- the terminal device sends a random access preamble to the network side device on a time-frequency resource and/or a code resource corresponding to an index of the first target beam, where the first target beam is the M beams.
- the first beam refers to the beam with the highest quality value.
- the network side device may determine, according to the time-frequency resource and/or the code resource of the received random access preamble, the beam with the highest beam reference quality value of the camped cell belonging to the terminal device detected by the terminal device. . In this way, the terminal device can directly indicate the beam with the highest beam reference quality value to the network side device.
- the network side device can also directly determine the beam with the highest beam reference quality value. At the same time, no additional signaling is needed during the indication process, which saves channel resources.
- the time-frequency resource of each random access preamble corresponds to an index of one beam.
- the terminal device may determine a corresponding time-frequency resource according to the index of the first target beam, and send the random access preamble to the network side device on the time-frequency resource.
- the network side device may directly determine the first beam reference quality value of the terminal device in the camped cell of the terminal device according to the time-frequency resource that receives the random access preamble. The index of the highest beam.
- the time-frequency resource of each random access preamble corresponds to an index of a group of beams.
- Different code resources on the same time-frequency resource correspond to different beams. For example, if the total number of available preambles is 64, then each beam can correspond to 8 preambles. For example, frequency f 1 , subframe 1, preamble 1 to 8 correspond to the index of beam 1; frequency f 1 , subframe 1, preamble 9 to 16 correspond to the index of beam 2, and so on.
- the terminal device may determine a corresponding time-frequency resource and a code resource according to the index of the first target beam, and send a random access preamble to the network-side device on the time-frequency resource and the code resource.
- the network side device may directly determine the first beam reference quality of the terminal device in the camped cell of the terminal device according to the time-frequency resource and the code resource that receive the random access preamble. The index of the beam with the highest value.
- the mapping between the index of the beam and the time-frequency resource and the code resource may be preset. For example, it may be specified that each of the available preamble codes is divided into L groups in each random access time-frequency resource, and the number of preambles in each group is K/L, and the index of the corresponding beam is 0 to L-1. .
- the number of packets L may be indicated by the network side device to the terminal device.
- the network side device may indicate the number of packets L to the terminal device in a system message or a Radio Resource Control (RRC) layer message. In this way, the adaptability to the number of different beams and the number of preambles can be guaranteed.
- RRC Radio Resource Control
- the network side device may further indicate a correspondence between a time-frequency resource and a beam group.
- three frequency resources are configured in one subframe, and each frequency resource corresponds to one beam group.
- the frequency resource 1 corresponds to the beam group 1
- the frequency resource 2 corresponds to the beam group 2
- the frequency resource 3 corresponds to the beam group 3.
- the preamble in each beam group corresponds to S/3 beams, where S is the total number of beams.
- the number of downlink beams in the cell and the correspondence between each beam and the random access preamble may be specified by the protocol, or the system broadcast message indicates the terminal device.
- the terminal device may first indicate the first target beam to the network side device, and then indicate the M beams to the network side device. In other embodiments, the terminal device may first indicate the M beams to the network side device, and then indicate the first target beam to the network side device.
- the network side device may select a beam that communicates with the terminal device according to the M beams. For example, the network side device may select one of the M beams as a target beam to communicate with the terminal device. The network side device may also select multiple beams of the M beams as target beams to communicate with the terminal device. The network side device can use the target beam to transmit information of all channels to the terminal device. The terminal device can also detect whether the network side device sends information to the terminal device on the target beam.
- the target beam may be determined according to a preset rule. For example, the target beam may be one or more beams with the highest beam quality among the M beams.
- the terminal device can track the beam of the camped cell and/or the neighboring cell of the terminal device based on the beam quality of the RRC layer, in addition to tracking the beam belonging to the camped cell based on the beam quality of the physical layer.
- the specific tracking method refer to step 105 to step 107, or step 108 to step 110, or step 111 to step 113.
- the terminal device determines N second beam reference quality values, where an nth second beam reference quality value of the N second beam reference quality values is based on an nth of the N first beam reference quality values.
- the terminal device may directly determine the second beam of the nth beam according to the first beam reference quality value of the nth beam. Reference quality value.
- the terminal device may determine the second beam reference quality value by using the following formula:
- the Q t is the filtered second beam reference quality value obtained by the terminal device
- q t is the current first beam reference quality value
- Q t-1 is the historical second beam reference quality value of the beam of the terminal
- a is the filter coefficient.
- a preset threshold may be set. If a first beam reference quality value of a beam is greater than the preset threshold, the beam may be determined according to the first beam reference quality value of the beam. The second beam reference quality value; if a first beam reference quality value of one beam is less than the preset threshold, the beam may be stopped from filtering to determine a second beam reference quality value of the beam.
- a detection period can be set. The first beam reference quality value outside the detection period does not affect the filtering process during the detection period. If all the first beam reference quality values of a beam in the detection period are greater than the preset threshold, but a first beam reference quality value of the beam outside the detection period is less than the preset threshold, the corresponding correspondence may still be determined.
- the second beam reference quality value of the beam during the detection period. If a first beam reference quality value of a beam in the detection period is less than the preset threshold, stopping filtering the first beam reference quality value of the beam. In this case, the terminal device may restart the detection period when the first beam reference quality value of the beam is greater than the preset threshold.
- the terminal device determines a second beam tracking message according to the N second beam reference quality values.
- the terminal device determines the second beam tracking message according to the N second beam reference quality values, where the terminal device: according to the N second beam reference quality values, the N The second beam tracking message is determined by the cell to which each beam in the beam belongs, the first preset threshold, and the second preset threshold, where the first preset threshold is greater than the second preset threshold, the second beam The tracking message includes an index of the candidate beam and/or an index of the available beam, where the second beam reference quality value of the candidate beam is greater than or equal to the first preset threshold, and the second beam reference quality value of the available beam is smaller than the first pre- Set a threshold and greater than or equal to the second preset threshold.
- the second beam tracking message may further include a second beam reference quality value of the candidate beam and/or the available beam.
- the terminal device directly reports the candidate beam and/or the available beam to the network side device, so that the network side device can select a suitable beam from the received candidate beam and/or available beam and the terminal device. Communicate.
- the terminal device can determine the cell to which the beam belongs according to the pilot information corresponding to the beam.
- the pilot information is a reference signal that is generated based on the cell identity.
- the second beam tracking message may include an index of a beam of at least one of the cells to which the N beams belong.
- the at least one cell may comprise a camped cell of the terminal device.
- the candidate beam and the available beam may be candidate beams and available beams of each of all cells to which the N beams belong, or may be candidate beams and available for one or more of all cells to which the N beams belong. Beam. For example, assume that the N beams belong to cell 1 (assuming cell 1 is a camping cell of the terminal device), cell 2, and cell 3. The terminal device may only determine the candidate beam and the available beam of the cell 1. The terminal device can also A candidate beam and an available beam of any two or all of Cell 1, Cell 2, and Cell 3 are determined.
- only one of the candidate beam and the available beam may be included in one or more cells.
- one or more cells may include candidate beams and available beams.
- the network side device can select a suitable beam to communicate with the terminal device according to the candidate beam and the available beam.
- the terminal device determines the second beam tracking message according to the N second beam reference quality values, where the terminal device: according to the N second beam reference quality values, the N The second beam tracking message is determined by the cell to which each beam in the beam belongs and the third preset threshold, wherein the second beam tracking message includes a second beam reference quality value of the N beams is greater than or equal to the third The index of the preset threshold beam.
- the second beam tracking message may further include a second beam reference quality value of the N beams that is greater than or equal to the third preset threshold.
- the terminal device can report the index of the beam that meets the preset condition (that is, greater than or equal to the third preset threshold) to the network side device, so that the network side device can directly comply with the preset condition.
- the appropriate beam is selected from the beam to communicate with the terminal device.
- the second beam tracking message includes an index of P beams, and a second beam reference quality value of each of the P beams is greater than or equal to the third preset threshold, where P is a positive integer greater than or equal to 1 and less than or equal to M.
- the terminal device determines that the number of beams that meet the preset condition is greater than or equal to M, the terminal device reports an index of the M beams. If the terminal device determines that the number of beams that meet the preset condition is not greater than M, report an index of all the beams that meet the preset condition.
- the third preset threshold may be equal to the first preset threshold. In some embodiments, the third preset threshold may be equal to the second preset threshold. In some embodiments, the third preset threshold may not be equal to the first preset threshold or the second preset threshold, for example, the third preset threshold may be greater than the second preset threshold and smaller than the first Preset threshold.
- the index of the beam included in the second beam tracking message may be an index of a beam that satisfies a second beam reference quality value greater than the third preset threshold in at least one of the cells to which the N beams belong.
- the index of the beam included in the second beam tracking message may also be an index of a beam that satisfies the second beam reference quality value greater than the third preset threshold among all the cells to which the N beams belong.
- the terminal device determines the second beam tracking message according to the N second beam reference quality values, including: the terminal device according to the N second beam reference quality values and the N a cell to which each beam belongs to determine at least two reference beams of each of at least one of the cells to which the N beams belong, and at least two reference beams of each of the cells are in the each of the cells
- the second beam refers to the two beams with the highest quality value.
- the terminal device determines the second beam tracking message, the second beam tracking message including the determined index of the at least two reference beams of the each cell.
- the second beam tracking message may further include a second beam reference quality value of the at least two reference beams of each cell.
- the number of reference beams that need to be determined may be specified by a protocol, or may be configured by the base station to the terminal device.
- the terminal device may directly report the multiple beams with the highest beam reference quality value to the network side device, so that the network side device may select one of the multiple beams with the highest beam quality value.
- a beam used to communicate with the terminal device may be specified by a protocol, or may be configured by the base station to the terminal device.
- the index of the beam included in the second beam tracking message may be an index of at least two reference beams in at least one of all cells to which the N beams belong.
- a beam included in the second beam tracking message The index may also be an index of at least two reference beams of each of all cells to which the N beams belong.
- the second beam tracking message may include a second beam reference quality value of the beam in addition to the index of the beam. It can be understood that, if the second beam tracking message includes an index of a beam that belongs to multiple cells, the second beam tracking message may further include information for indicating a cell to which the beam belongs.
- the order of the indexes of the multiple beams may be determined according to a second beam reference quality value of the beam.
- the second beam reference quality value of the beam corresponding to the index of the first beam is the highest
- the second beam reference quality value of the beam corresponding to the index of the second beam is the second highest
- the network side device can determine the second beam reference quality value order of the beams in each cell according to the order of the indexes of the received beams.
- the terminal device may determine a cell measurement result according to the N second beam reference quality values, and determine that the second beam tracking message includes the cell measurement result. By reporting the cell measurement result, the network side device can perform cell level tracking on the beam.
- the cell measurement result may be the highest quality second beam reference quality value of each of the at least one of the cells to which the N beams belong.
- the terminal device may determine a second beam reference quality value of the second beam reference quality value in the cell 1 as the cell measurement result of the cell 1.
- the terminal device may also determine the highest second beam reference quality value of the cell 2 as the cell measurement result of the cell 2.
- the terminal device can also determine the highest second beam reference quality value of the cell 3 as the cell measurement result of the cell 3.
- the cell measurement result may include cell measurement results of cell 1, cell 2, and cell 3.
- the cell measurement result may be an average value of second beam reference quality values of at least two reference beams of each of the at least one of the cells to which the N beams belong, where The at least two reference beams of each cell are at least two beams of the second beam with the highest reference quality value in each of the cells.
- the number of reference beams that need to be determined may be specified by the protocol, or may be configured by the network side device to the terminal device.
- the terminal device may determine an average of three second beam reference quality values of the second beam reference quality value in the cell 1 as the cell measurement result of the cell 1.
- the terminal device may also determine an average of the highest three second beam reference quality values of the cell 2 as the cell measurement result of the cell 2.
- the terminal device may also determine an average of the highest three second beam reference quality values of the cell 3 as the cell measurement result of the cell 3.
- the cell measurement result may include cell measurement results of cell 1, cell 2, and cell 3.
- the average value may be an arithmetic mean value, a geometric mean value, or the like, which is not limited in the embodiment of the present application.
- the second beam tracking message may further include the N second beam reference quality values and an index of the N beams.
- the network side device can determine a specific result according to the N second beam reference quality values.
- the network side device may determine the candidate beam and/or the available beam according to the first preset threshold and the second preset threshold. It can be understood that the network side device can also determine candidate beams and/or available beams of at least one of the cells to which the N beams belong.
- the network side device may determine, by the third preset threshold, the beam whose second beam reference quality value is higher than the third budget threshold.
- the network side device may determine multiple beams with the highest beam reference quality in each cell.
- the network side device can determine the cell measurement result.
- the specific process of the network side device determining the specific result is determined by the terminal device to determine the same specific result. The specific process is similar, so I won't go into details here.
- the terminal device sends the second beam tracking message to the network side device, where the second beam tracking message is an RRC layer message.
- the terminal device may determine a second beam reference quality value of each beam based on multiple first beam reference quality values of each beam.
- the beam reference quality value tracked by the terminal device is a measurement result accumulated after a period of time.
- the second beam tracking message may include an index of a beam of at least one of the cells to which the N beams belong.
- the network side device can obtain the beam quality value of the camped cell and the neighboring cell of the terminal device.
- the network side device can determine not only the cell status of the camped cell of the terminal device but also the cell status of the neighboring cell that the terminal device can detect.
- the terminal device may periodically send the second beam tracking message to the network side device.
- the sending period may be preset, or may be indicated by the network side device to the terminal device.
- the terminal device may further send the second beam tracking message to the network side device if the preset measurement event is met. Specifically, the terminal device may use the beam-based cell measurement result to determine whether the preset measurement event is satisfied. The terminal device may send the second beam tracking message to the network side device if the preset measurement event is met. The terminal device can also report the preset measurement event at the same time.
- the preset measurement event may include one or more of the following: a cell measurement result of the camping cell of the terminal device is smaller than a cell offset of a neighboring cell of the terminal device; a preset offset of the terminal device; The cell measurement result of the cell is smaller than a preset threshold; the cell measurement result of the neighboring cell of the terminal device is greater than a preset threshold.
- the preset measurement event component and the preset offset and the preset threshold value used in the preset measurement event may be preset by the terminal device, or may be indicated by the network side device to the terminal device.
- the terminal device may determine whether the preset measurement event is met according to the result of the beam tracking, so as to select the reported content according to the determination result.
- the terminal device may further determine the cell measurement result by using the steps 108 to 110 and send the cell measurement result to the network side device.
- the terminal device determines, according to the N first beam reference quality values and a cell to which each of the N beams belongs, a first beam reference with the highest quality of each cell in at least one of the cells to which the N beams belong. Quality value.
- the terminal device determines a second beam reference quality value of each cell according to the first beam reference quality value that is the highest quality of each cell.
- the second beam reference quality value can also be determined by using Equation 1.2, and need not be described here.
- the terminal device sends the second beam reference quality value of each cell to the network side device by using an RRC layer message.
- the second beam reference quality value of each cell is the cell measurement result of the each cell.
- the terminal device may determine the cell measurement result according to the result of the beam tracking, and report the measured cell measurement result to the network side device, so that the network side device acquires the cell measurement result tracked by the terminal device.
- the terminal device may further send the second beam tracking message to the network side device if the preset measurement event is met. Specifically, the terminal device may use the beam-based cell measurement result to determine whether the preset measurement event is satisfied. The terminal device may send the second beam tracking message to the network side device if the preset measurement event is met. The terminal device can also report the preset measurement event at the same time. The specific content of the preset measurement event is the same as step 107, and need not be described here.
- the terminal device may periodically send the second beam reference quality value of each cell to the network side device.
- the sending period may be preset, or may be indicated by the network side device to the terminal device.
- the terminal device may further determine the cell measurement result and send the cell measurement result to the network side device by using steps 111 to 113.
- the terminal device determines, according to the N first beam reference quality values and a cell to which each of the N beams belongs, the first beam reference of each cell in at least one of the cells to which the N beams belong. The average of at least two beams with the highest quality value.
- the terminal device determines a second beam reference quality value of each cell according to an average value of at least two beams of the first beam reference quality value of each cell.
- the terminal device sends the second beam reference quality value of each cell to the network side device by using an RRC layer message.
- the second beam reference quality value of each cell is the cell measurement result of the each cell.
- the terminal device may determine the cell measurement result according to the result of the beam tracking, and report the measured cell measurement result to the network side device, so that the network side device acquires the cell measurement result tracked by the terminal device.
- the terminal device may further send the second beam tracking message to the network side device if the preset measurement event is met. Specifically, the terminal device may use the beam-based cell measurement result to determine whether the preset measurement event is satisfied. The terminal device may send the second beam tracking message to the network side device if the preset measurement event is met. The terminal device can also report the preset measurement event at the same time. The specific content of the preset measurement event is the same as step 107, and need not be described here.
- the terminal device may periodically send the second beam reference quality value of each cell to the network side device.
- the sending period may be preset, or may be indicated by the network side device to the terminal device.
- step 104 may be performed after step 103 or before step 103.
- step 105 to step 107, step 108 to step 110, and step 111 to step 113 may be performed after step 104, or may be performed after step 103.
- steps 101 through 103 are shown in FIG.
- FIG. 3 is a schematic flowchart of another method for beam tracking according to an embodiment of the present application.
- the terminal device sends a beam training request to the network side device by using the first beam.
- the terminal device may determine the first beam by using the N beams to send a random access preamble to the network side device by using N time beams, where The subframe number and/or the frequency resource number of any two of the N time-frequency resources are different, and N is a positive integer greater than or equal to 2; the terminal device receives at least one random connection sent by the network side device. And the terminal device determines the first beam from the N beams according to the value of the RA-RANTI in each of the random access response messages in the at least one random access response message. In this way, the terminal device can select one of a plurality of available beams that can be used for communication with the network side device to use the beam to send a request message to the network side device.
- the network side device may determine a random access-radio network temporary identifier according to the time-frequency resource of the random access preamble (Random Access-Radio Network) Temporary Identifier, RA-RNTI).
- RA-RNTI Random Access-Radio Network Temporary Identifier
- RA-RNTI 1+t_id+10*f_id, (Formula 1.3)
- the RA-RNTI is the value of the RA-RNTI
- the t_id is the subframe number
- the f_id is the frequency resource number.
- the random access response message sent by the network side device is scrambled using the determined RA-RNTI value.
- the terminal device can determine that one or more of the N beams can be used to transmit uplink information by descrambling the random access response message.
- the terminal device only receives a random access response message sent by the network side device.
- the terminal device descrambles the random access response message according to the RA-RNTI value, and determines a time-frequency resource when transmitting the preamble. Since the time-frequency resource and the beam are in one-to-one correspondence, the terminal device may determine that the beam corresponding to the time-frequency resource is the first beam.
- the terminal device may receive multiple random access response messages sent by the network side device.
- the terminal device may descramble the received RA-RNTI value of the first random access response message, determine a time-frequency resource, and determine that the beam corresponding to the time-frequency resource is the first Beam.
- the terminal device may also descramble the received RA-RNTI value of any random access response message, determine a time-frequency resource, and determine that the beam corresponding to the time-frequency resource is the first beam.
- the first beam may be any one of the beams that the terminal device can use.
- the terminal device determines, according to the beam training response sent by the network side device, a second beam that is in communication with the network side device, where the beam training response includes M physical pilot resources, where M is greater than or equal to 1. Integer.
- the terminal device can select a suitable beam from multiple available beams to communicate with the network side device.
- the terminal device may send reference signals to the network side device by using M beams respectively on the M physical layer pilot resources; the terminal device receives feedback information sent by the network side device. And the feedback information includes an index of one or more of the M beams; the terminal device determines the second beam according to the feedback information, where the second beam belongs to the one or more beams.
- the terminal device can train the available beam and determine a beam that can be used for communication with the network side device according to the information fed back by the network side device.
- the network side device may determine a beam quality value of each of the M beams according to the received reference signal.
- the network side device determines the feedback information according to the determined beam quality value of each beam, and the feedback information may include an index of one or more beams of the M beams with the highest beam quality value.
- the feedback information may include an index of one or more beams whose beam quality values are greater than a predetermined threshold.
- the terminal device may determine, according to the M physical pilot resources, a first physical pilot resource, and use at least one beam to the network side device on the first physical pilot resource. Transmitting a reference signal, where the first physical pilot resource is a physical layer pilot resource corresponding to a physical layer pilot resource used by the terminal device to receive the information sent by the network side device; the terminal device receives the network side device sending Feedback information, the feedback information including an index of one or more beams in the at least one beam; the terminal device determines the second beam according to the feedback information, wherein the second beam belongs to the one or more beams.
- the feedback information may be sent to the terminal device through a dedicated physical layer resource, or may be sent to the terminal device through a MAC layer message or an RRC layer message, which is not limited in this embodiment of the present application.
- the beam quality value may be RSRP, RSRQ, etc., or may be filtered by Equation 1.1.
- the received beam quality value is not limited in the embodiment of the present application.
- the number of available transmit beams of the terminal device may be less than the number M of physical pilot resources.
- the terminal device may also select M beams from multiple available beams. .
- the terminal device may randomly select M beams, or may select M beams determined according to the RA-RNTI value in the received random access response message.
- the terminal device may select a suitable number of beams for training, so that the number of beams used for training is equal to the physical layer pilot resources allocated by the network side device for the terminal device for the training beam.
- the pilot resources configured by the network side device may be periodically configured, and the pilot resources may also be discretely configured.
- the pilot resources include a Demodulation Reference Signal (DMRS), a Sounding Reference Signal (SRS), and the like.
- DMRS Demodulation Reference Signal
- SRS Sounding Reference Signal
- the pilot resource configured by the network side device includes a first identifier, where the first identifier is used to indicate that the pilot resource is a pilot resource used for beam training.
- the terminal device may send the terminal device to be available.
- the number of beams is indicated to the network side device.
- the number of available transmit beams of the terminal device can be carried by the beam training request.
- the network side device may determine the number M of physical pilot resources according to the number of available transmit beams.
- the number M of physical pilot resources may be equal to or less than the number of available transmit beams.
- the terminal device may send the number of available beams to the network side device, so that the network side device determines, according to the number of available beams, the number of physical layer pilot resources that need to be allocated for the terminal device.
- the embodiment of the present application further provides a terminal device.
- the terminal device includes a processing unit and a transmitting unit.
- a processing unit configured to determine N first beam reference quality values, where the N first beam reference quality values respectively correspond to N beams, and N is a positive integer greater than or equal to 1.
- the processing unit is further configured to select M beams from the N beams according to the N first beam reference quality values and a cell to which each of the N beams belongs, where M is greater than or equal to 1 and less than Or a positive integer equal to N, the M beams belonging to the camping cell of the terminal device.
- a sending unit configured to indicate the selected M beams to the network side device that provides the terminal device with a service.
- the sending unit is configured to send, to the network side device, a first beam tracking message, where the first beam tracking message includes an index of the M beams, where the first beam tracking message is Control MAC layer messages for media access.
- the sending unit is further configured to send a random access preamble to the network side device on a time-frequency resource and/or a code resource corresponding to an index of the first target beam, where The first target beam is a beam with the highest beam reference quality value among the M beams.
- the processing unit is further configured to determine a second beam tracking message according to the N second beam reference quality values.
- the sending unit is further configured to send the second beam tracking message to the network side device, where the second beam tracking message is a radio resource control RRC layer message.
- the processing unit is specifically configured to: according to the N second beam reference quality values, a cell to which each of the N beams belongs, a first preset threshold, and a second preset Threshold, determining the second beam And the first preset threshold is greater than the second preset threshold, where the second beam tracking message includes an index of the candidate beam and/or an index of the available beam, where the second beam reference quality value of the candidate beam is greater than or And being equal to the first preset threshold, the second beam reference quality value of the available beam is less than the first preset threshold and greater than or equal to the second preset threshold.
- the processing unit is configured to determine the second according to the N second beam reference quality values, a cell to which each of the N beams belongs, and a third preset threshold. And a beam tracking message, where the second beam tracking message includes an index of a second beam reference quality value of the N beams that is greater than or equal to the third preset threshold beam.
- the processing unit is configured to determine, according to the N second beam reference quality values and a cell to which each of the N beams belongs, at least one cell in the cell to which the N beams belong. At least two reference beams of each cell, the at least two reference beams of each cell being at least two beams having the highest second reference quality value in each of the cells; determining the second beam tracking message, the first The two beam tracking message includes the determined index of at least two reference beams of each of the cells.
- the processing unit is configured to determine a cell measurement result and determine the second beam tracking according to the N second beam reference quality values and a cell to which each of the N beams belongs.
- the message, the cell measurement result is the highest second beam reference quality value of each cell in at least one of the cells to which the N beams belong, and the second beam tracking message includes the cell measurement result.
- the processing unit is configured to determine, according to the N second beam reference quality values and a cell to which each of the N beams belongs, at least one cell in the cell to which the N beams belong. At least two reference beams of each cell, the at least two reference beams of each cell being at least two beams having a second beam reference quality value in each of the cells; determining a cell measurement result, the cell measurement result including the An average of second beam reference quality values for at least two reference beams of each cell; determining the second beam tracking message, the second beam tracking message including the cell measurement result.
- the processing unit is further configured to determine, according to the N first beam reference quality values and a cell to which each of the N beams belongs, determine at least one of the cells to which the N beams belong. a first beam reference quality value of the highest quality of each cell in the cell; the processing unit is further configured to determine a second beam reference quality value of each cell according to the highest first beam reference quality value of each cell; And is further configured to send the second beam reference quality value of each cell to the network side device by using an RRC layer message as a cell measurement result.
- the processing unit is further configured to determine, according to the N first beam reference quality values and a cell to which each of the N beams belongs, determine at least one of the cells to which the N beams belong. An average of the highest at least two first beam reference quality values of each cell in the cell; the processing unit is further configured to determine, according to an average of the highest at least two first beam reference quality values of each cell a second beam reference quality of each cell; the sending unit is further configured to send the second beam reference quality of each cell to the network side device by using an RRC layer message as a cell measurement result.
- the processing unit is further configured to determine, according to the cell measurement result, whether the preset measurement event is met.
- the terminal device further includes a receiving unit, configured to receive a value of M indicated by the network side device.
- the processing unit may be implemented by a processor, and the sending unit may be configured by a transmitter.
- the receiving unit can be implemented by a receiver or a transceiver.
- the embodiment of the present application further provides a structural block diagram of a network side device.
- the network side device includes a receiving unit, a processing unit, and a sending unit.
- a receiving unit configured to acquire M beams indicated by the terminal device, where the M beams belong to a camping cell of the terminal device, and M is a positive integer greater than or equal to 1.
- a processing unit configured to select one of the M beams.
- a sending unit configured to send a downlink message to the terminal device by using the selected beam.
- the receiving unit is configured to receive a first beam tracking message sent by the terminal device, where the first beam tracking message includes an index of the M beams, where the first beam tracking message is MAC layer message.
- the receiving unit is further configured to receive a random access preamble sent by the terminal device.
- the processing unit is further configured to determine, according to the time-frequency resource and/or the code resource used by the random access preamble, the first target beam, where the first target beam is the highest reference quality value of the first beam in the M beams. Beam.
- the receiving unit is further configured to receive a second beam tracking message sent by the terminal device, where the second beam tracking message is an RRC layer message, where the second beam tracking message includes a candidate beam.
- An index of an index and/or an available beam the second beam reference quality value of the candidate beam being greater than or equal to a first preset threshold, the second beam reference quality value of the available beam being less than the first preset threshold and greater than or equal to the a second preset threshold, where the first preset threshold is greater than the second preset threshold.
- the receiving unit is further configured to receive a second beam tracking message sent by the terminal device, where the second beam tracking message is an RRC layer message, where the second beam tracking message includes at least one An index of the beam, the second beam reference quality value of the at least one beam being greater than or equal to the third preset threshold beam.
- the receiving unit is further configured to receive a second beam tracking message sent by the terminal device, where the second beam tracking message is an RRC layer message, where the second beam tracking message includes at least An index of at least two reference beams of each cell in a cell, where at least two reference beams of each cell are at least two beams with the highest second reference quality value in each cell.
- the receiving unit is further configured to receive a second beam tracking message sent by the terminal device, where the second beam tracking message is an RRC layer message, where the second beam tracking message includes a cell measurement result.
- the cell measurement result is the highest quality second beam reference quality value of each cell in at least one cell.
- the receiving unit is further configured to receive a second beam tracking message sent by the terminal device, where the second beam tracking message is an RRC layer message, where the second beam tracking message includes a cell measurement result.
- the cell measurement result includes an average of second beam reference quality values of at least two reference beams of each cell in the at least one cell, and at least two reference beams of each cell are second beams in the each cell Refer to at least two beams with the highest quality value.
- the receiving unit is further configured to receive a cell measurement result of each cell in the at least one cell that is sent by the terminal device, where the cell measurement result of each cell includes the Two beam reference quality values.
- the receiving unit is further configured to receive a second beam tracking message sent by the terminal device, where the second beam tracking message is an RRC layer message, where the second beam tracking message includes a cell measurement
- the cell measurement result includes a second beam reference quality of each cell in at least one cell, the number of each cell
- the two beam reference quality is determined based on an average of at least two first beam reference quality values for each cell.
- the sending unit is further configured to send the value of the M to the terminal device.
- the processing unit may be implemented by a processor, which may be implemented by a transmitter or a transceiver, which may be implemented by a receiver or a transceiver.
- the embodiment of the present application further provides a terminal device.
- the terminal device includes a transmitting unit, a receiving unit, and a processing unit.
- a sending unit configured to send a beam training request to the network side device by using the first beam.
- the receiving unit is configured to receive a beam training response sent by the network side device.
- a processing unit configured to determine, according to the beam training response, a second beam for communicating with the network side device, where the beam training response includes M physical pilot resources, where M is a positive integer greater than or equal to 1.
- the sending unit is further configured to send, by using N beams, N random preambles to the network side device, where the N time-frequency resources are respectively used, where any two of the N time-frequency resources are used.
- the subframe number and/or the frequency resource number of the time-frequency resources are different, and N is a positive integer greater than or equal to 2.
- the receiving unit is further configured to receive at least one random access response message sent by the network side device.
- the processing unit is further configured to determine the first beam from the N beams according to a value of the RA-RNTI in each random access response message in the at least one random access response message.
- the sending unit is further configured to send the reference signal to the network side device by using M beams on the M physical pilot resources.
- the receiving unit is further configured to receive feedback information sent by the network side device, where the feedback information includes an index of one or more of the M beams.
- the processing unit is configured to determine the second beam according to the feedback information, where the second beam belongs to the one or more beams.
- the processing unit is further configured to select M beams from the plurality of available beams.
- the sending unit is further configured to indicate, to the network side device, the number of available transmit beams of the terminal device.
- the processing unit may be implemented by a processor, which may be implemented by a transmitter or a transceiver, which may be implemented by a receiver or a transceiver.
- the embodiment of the present application further provides a network side device.
- the network side device includes a receiving unit, a processing unit, and a sending unit.
- the receiving unit is configured to receive a beam training request sent by the terminal device.
- a processing unit configured to determine a beam training response, where the beam training response includes M physical pilot resources, and M is a positive integer greater than or equal to 1.
- a sending unit configured to send the beam training response to the terminal device.
- the receiving unit is further configured to receive N random access preambles sent by the terminal device, where N is a positive integer greater than or equal to 1.
- the processing unit is further configured to determine N RA-RANT values according to time-frequency resources of each of the N random access preambles.
- the sending unit is further configured to send N random access responses to the terminal device, where the N random access responses are scrambled using the N RA-RNTI values, respectively.
- the receiving unit is further configured to receive, by the terminal device, the reference signals that are sent by using the M beams on the M physical pilot resources.
- the processing unit is further configured to determine a beam quality value of each of the M beams according to the received reference signal.
- the processing unit is further configured to determine, according to the beam quality value of each beam, feedback information, where the feedback information includes an index of one or more of the M beams.
- the processing unit is specifically configured to: according to the beam quality value of each beam, determine that the feedback information includes an index of one or more beams with the highest beam quality value; or according to the each beam Beam The quality value determines that the feedback information includes an index of one or more beams whose beam quality value is greater than a preset threshold.
- the receiving unit is further configured to receive the number of available transmit beams sent by the terminal device.
- the sending unit is further configured to determine, according to the number of available transmit beams, the number M of physical pilot resources, where M is equal to or smaller than the number of available transmit beams.
- the processing unit may be implemented by a processor, which may be implemented by a transmitter or a transceiver, which may be implemented by a receiver or a transceiver.
- FIG. 4 is a structural block diagram of a terminal device according to an embodiment of the present application.
- the terminal device 400 includes a processor 401, a memory 402, a transmitter 403, a receiver 404, and an antenna 405.
- the terminal device 400 may also include other devices such as an input device, an output device, a battery, and the like.
- Processor 401 can include functionality to operate one or more software programs.
- the software program can be stored in memory 402.
- the software instructions stored by processor 402 and memory 402 can be configured to cause the actions performed by terminal device 400.
- processor 402 is capable of operating a connection program.
- Memory 402 can be institutional memory, flash memory, magnetic storage devices such as hard disks, floppy disk drives, magnetic tape, and the like.
- Memory 402 can store one or more software programs, instructions, information blocks, data, and the like.
- the memory 402 can store instructions for performing the method performed by the terminal device in the method of FIG.
- the processor 401 can execute the instructions stored in the memory 402 in combination with other hardware (for example, the transmitter 403, the receiver 404, and the antenna 405) to complete the steps performed by the terminal device in the method shown in FIG. 1.
- the specific working process and beneficial effects can be seen in the figure. A description of the terminal device in the embodiment shown.
- the memory 402 can store instructions for performing the method performed by the terminal device in the method of FIG.
- the processor 401 can execute the instructions stored in the memory 402 in combination with other hardware (for example, the transmitter 403, the receiver 404, and the antenna 405) to complete the steps performed by the terminal device in the method shown in FIG. 3.
- other hardware for example, the transmitter 403, the receiver 404, and the antenna 405.
- FIG. 5 is a structural block diagram of a network side device according to an embodiment of the present application.
- the network side device 500 shown in FIG. 5 includes a processor 501, a memory 502, and a transceiver 503.
- Processor 501 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the foregoing method may be completed by an integrated logic circuit of hardware in the processor 501 or an instruction in a form of software.
- the processor 501 may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a Field Programmable Gate Array (FPGA), or the like. Programmable logic devices, discrete gates or transistor logic devices, discrete hardware components.
- DSP digital signal processor
- ASIC application specific integrated circuit
- FPGA Field Programmable Gate Array
- the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
- the steps of the method disclosed in the embodiments of the present application may be directly implemented by the hardware decoding processor, or may be performed by a combination of hardware and software modules in the decoding processor.
- the software module can be located in a random access memory (RAM), a flash memory, a read-only memory (ROM), a programmable read only memory or an electrically erasable programmable memory, a register, etc.
- RAM random access memory
- ROM read-only memory
- programmable read only memory or an electrically erasable programmable memory
- register etc.
- processor 501 reads the instructions in memory 502 and, in conjunction with its hardware, performs the steps of the above method.
- the memory 502 can be configured to perform network side setting in the method shown in FIG.
- the processor 501 can execute the instructions stored in the memory 402 in combination with other hardware (for example, the transceiver 503 and the antenna 504) to complete the steps performed by the network side in the method shown in FIG. 1.
- the specific working process and the beneficial effects can be implemented as shown in FIG. A description of the network side device in the example.
- the memory 502 can store instructions for performing the method performed by the network side device in the method of FIG.
- the processor 501 can execute the instructions stored in the memory 502 to complete the steps performed by the network side device in the method shown in FIG. 3 in combination with other hardware (for example, the transceiver 503).
- other hardware for example, the transceiver 503
- the disclosed systems, devices, and methods may be implemented in other manners.
- the device embodiments described above are merely illustrative.
- the division of the unit is only a logical function division.
- there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
- the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
- the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
- each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
- the functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product.
- the technical solution of the present application which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including
- the instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) or a processor to perform all or part of the steps of the methods described in the various embodiments of the present application.
- the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes. .
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Abstract
Description
Claims (30)
- 一种跟踪波束的方法,其特征在于,所述方法包括:终端设备确定N个第一波束参考质量值,所述N个第一波束参考质量值分别对应于N个波束,N为大于或等于1的正整数;所述终端设备根据所述N个第一波束参考质量值和所述N个波束中的每个波束所属的小区,从所述N个波束中选择M个波束,其中M为大于或等于1且小于或等于N的正整数,所述M个波束属于所述终端设备的驻留小区或服务小区;所述终端设备将选择的M个波束指示给为该终端设备提供服务的网络侧设备。
- 如权利要求1所述的方法,其特征在于,所述方法还包括:所述终端设备在对应于第一目标波束的索引的时频资源和/或码资源上向所述网络侧设备发送随机接入前导码,其中,所述第一目标波束为所述M个波束中第一波束参考质量值最高的波束。
- 如权利要求1或2所述的方法,其特征在于,所述方法还包括:所述终端设备根据所述N个第一波束参考质量值和所述N个波束中的每个波束所属的小区,确定所述N个波束所属小区中至少一个小区中每个小区的最高的至少两个第一波束参考质量值的平均值;所述终端设备根据所述每个小区的最高的至少两个第一波束参考质量值的平均值,确定所述每个小区的第二波束参考质量;所述终端设备将所述每个小区的第二波束参考质量作为小区测量结果通过RRC层消息发送至所述网络侧设备。
- 如权利要求1或2所述的方法,其特征在于,所述方法还包括:所述终端设备根据所述N个第一波束参考质量值和所述N个波束中的每个波束所属的小区,确定所述N个波束所属小区中至少一个小区中每个小区质量最高的第一波束参考质量值;所述终端设备根据所述每个小区最高的第一波束参考质量值,确定所述每个小区的第二波束参考质量值;所述终端设备将所述每个小区的第二波束参考质量值作为小区测量结果通过RRC层消息发送至所述网络侧设备。
- 如权利要求1或2所述的方法,其特征在于,所述方法还包括:所述终端设备确定N个第二波束参考质量值,所述N个第二波束参考质量值中的第n个第二波束参考质量值是根据所述N个第一波束参考质量值中的第n个第一波束参考质量值确定的,n=1,…,N;所述终端设备根据所述N个第二波束参考质量值,确定第二波束跟踪消息;所述终端设备将所述第二波束跟踪消息发送至所述网络侧设备,其中所述第二波束跟踪消息为无线资源控制RRC层消息。
- 如权利要求5所述的方法,其特征在于,所述终端设备根据所述N个第二波束参考质量值,确定第二波束跟踪消息,包括:所述终端设备根据所述N个第二波束参考质量值、所述N个波束中的每个波束所属的小区和第三预设门限,确定所述第二波束跟踪消息,其中所述第二波束跟踪消息包括P个波束的索引,所述P个波束中的每个波束的第二波束参考质量值大于或等于所述第三预设门限,P为大于或等于1且小于或等于M的正整数。
- 如权利要求5所述的方法,其特征在于,所述终端设备根据所述N个第二波束参考质量值,确定第二波束跟踪消息,包括:所述终端设备根据所述N个第二波束参考质量值和所述N个波束中每个波束所属的小区,确定所述N个波束所属小区中至少一个小区中每个小区的至少两个参考波束,所述每个小区的至少两个参考波束为所述每个小区中第二波束参考质量值最高的至少两个波束;所述终端设备确定所述第二波束跟踪消息,所述第二波束跟踪消息包括确定的所述每个小区的至少两个参考波束的索引。
- 如权利要求3或4所述的方法,其特征在于,所述方法还包括:所述终端设备根据所述小区测量结果,确定是否满足预设测量事件。
- 如权利要求1至8中任一项所述的方法,其特征在于,所述M的取值是由所述网络侧设备指示给所述终端设备的。
- 一种跟踪波束的方法,其特征在于,所述方法包括:网络侧设备获取终端设备指示的M个波束,其中,所述M个波束属于所述终端设备的驻留小区或服务小区,M为大于或等于1的正整数;所述网络侧设备从所述M个波束中选择一个波束;所述网络侧设备使用选择的波束向所述终端设备发送下行消息。
- 如权利要求10所述的方法,其特征在于,所述方法还包括:所述网络侧设备接收所述终端设备发送的随机接入前导码;所述网络侧设备根据所述随机接入前导码使用的时频资源和/或码资源,确定第一目标波束,其中所述第一目标波束为所述M个波束中该第一波束参考质量值最高的波束。
- 如权利要求10或11所述的方法,其特征在于,所述方法还包括:所述网络侧设备接收所述终端设备发送的至少一个小区中每个小区的小区测量结果,其中所述每个小区的小区测量结果为所述每个小区的第二波束参考质量值,所述每个小区的第二波束参考质量是根据所述每个小区的最高的至少两个第一波束参考质量值的平均值确定的。
- 如权利要求10或11所述的方法,其特征在于,所述方法还包括:所述网络侧设备接收所述终端设备发送的至少一个小区中每个小区的小区测量结果,其中所述每个小区的小区测量结果包括所述每个小区的第二波束参考质量值,所述每个小区的第二波束参考质量值是根据所述每个小区最高的第一波束参考质量值确定的。
- 如权利要求10或11所述的方法,其特征在于,所述方法还包括:所述网络侧设备接收所述终端设备发送的第二波束跟踪消息,其中所述第二波束跟踪消息为RRC层消息,所述第二波束跟踪消息中包括P个波束的索引,所述P个波束中的每个波束的第二波束参考质量值大于或等于第三预设门限,P为大于或等于1且小于或等于M的正整数。
- 如权利要求10或11所述的方法,其特征在于,所述方法还包括:所述网络侧设备接收所述终端设备发送的第二波束跟踪消息,其中所述第二波束跟踪消息为RRC层消息,所述第二波束跟踪消息包括分别属于至少一个小区中每个小区的至少两个参考波束的索引,所述每个小区的至少两个参考波束为所述每个小区中第二波束参考质量值最高的至少两个波束。
- 如权利要求10至15中任一项所述的方法,其特征在于,所述M的取值是由所述网络侧设备指示给所述终端设备的。
- 一种终端设备,其特征在于,所述终端设备包括:处理单元,用于确定N个第一波束参考质量值,所述N个第一波束参考质量值分别对应于N个波束,N为大于或等于1的正整数;所述处理单元,还用于根据所述N个第一波束参考质量值和所述N个波束中的每个波束所属的小区,从所述N个波束中选择M个波束,其中M为大于或等于1且小于或等于N的正整数,所述M个波束属于所述终端设备的驻留小区或服务小区;发送单元,用于将选择的M个波束指示给为该终端设备提供服务的网络侧设备。
- 如权利要求17所述的终端设备,其特征在于,所述发送单元,还用于在对应于第一目标波束的索引的时频资源和/或码资源上向所述网络侧设备发送随机接入前导码,其中,所述第一目标波束为所述M个波束中第一波束参考质量值最高的波束。
- 如权利要求17或18所述的终端设备,其特征在于,所述处理单元,还用于根据所述N个第一波束参考质量值和所述N个波束中的每个波束所属的小区,确定所述N个波束所属小区中至少一个小区中每个小区的最高的至少两个第一波束参考质量值的平均值;所述处理单元,还用于根据所述每个小区的最高的至少两个第一波束参考质量值的平均值,确定所述每个小区的第二波束参考质量;所述发送单元,还用于将所述每个小区的第二波束参考质量作为小区测量结果通过RRC层消息发送至所述网络侧设备。
- 如权利要求17或18所述的终端设备,其特征在于,所述处理单元,还用于根据所述N个第一波束参考质量值和所述N个波束中的每个波束所属的小区,确定所述N个波束所属小区中至少一个小区中每个小区质量最高的第一波束参考质量值;所述处理单元,还用于根据所述每个小区最高的第一波束参考质量值,确定所述每个小区的第二波束参考质量值;所述发送单元,还用于将所述每个小区的第二波束参考质量值作为小区测量结果通过RRC层消息发送至所述网络侧设备。
- 如权利要求17或18所述的终端设备,其特征在于,所述处理单元,还用于确定N个第二波束参考质量值,所述N个第二波束参考质量值中的第n个第二波束参考质量值是根据所述N个第一波束参考质量值中的第n个第一波束参考质量值确定的,n=1,…,N;所述处理单元,还用于根据所述N个第二波束参考质量值,确定第二波束跟踪消息;所述发送单元,还用于将所述第二波束跟踪消息发送至所述网络侧设备,其中所述第二波束跟踪消息为无线资源控制RRC层消息。
- 如权利要求21所述的终端设备,其特征在于,所述处理单元,具体用于根据所 述N个第二波束参考质量值、所述N个波束中的每个波束所属的小区和第三预设门限,确定所述第二波束跟踪消息,其中所述第二波束跟踪消息包括P个波束的索引,所述P个波束中的每个波束的第二波束参考质量值大于或等于所述第三预设门限,P为大于或等于1且小于或等于M的正整数。
- 如权利要求21所述的终端设备,其特征在于,所述处理单元,具体用于根据所述N个第二波束参考质量值和所述N个波束中每个波束所属的小区,确定所述N个波束所属小区中至少一个小区中每个小区的至少两个参考波束,所述每个小区的至少两个参考波束为所述每个小区中第二波束参考质量值最高的至少两个波束;确定所述第二波束跟踪消息,所述第二波束跟踪消息包括确定的所述每个小区的至少两个参考波束的索引。
- 如权利要求19或20所述的终端设备,其特征在于,所述处理单元,还用于根据所述小区测量结果,确定是否满足预设测量事件。
- 一种网络侧设备,其特征在于,所述网络侧设备包括:接收单元,用于获取终端设备指示的M个波束,其中,所述M个波束属于所述终端设备的驻留小区或服务小区,M为大于或等于1的正整数;处理单元,用于从所述M个波束中选择一个波束;发送单元,用于使用选择的波束向所述终端设备发送下行消息。
- 如权利要求25所述的网络侧设备,其特征在于,所述接收单元,还用于接收所述终端设备发送的随机接入前导码;所述处理单元,还用于根据所述随机接入前导码使用的时频资源和/或码资源,确定第一目标波束,其中所述第一目标波束为所述M个波束中该第一波束参考质量值最高的波束。
- 如权利要求25或26所述的网络侧设备,其特征在于,所述接收单元,还用于接收所述终端设备发送的至少一个小区中每个小区的小区测量结果,其中所述每个小区的小区测量结果为所述每个小区的第二波束参考质量值,所述每个小区的第二波束参考质量是根据所述每个小区的最高的至少两个第一波束参考质量值的平均值确定的。
- 如权利要求25或26所述的网络侧设备,其特征在于,所述接收单元,还用于接收所述终端设备发送的至少一个小区中每个小区的小区测量结果,其中所述每个小区的小区测量结果包括所述每个小区的第二波束参考质量值,所述每个小区的第二波束参考质量值是根据所述每个小区最高的第一波束参考质量值确定的。
- 如权利要求25或26所述的网络侧设备,其特征在于,所述接收单元,还用于接收所述终端设备发送的第二波束跟踪消息,其中所述第二波束跟踪消息为RRC层消息,所述第二波束跟踪消息包括P个波束的索引,所述P个波束中的每个波束的第二波束参考质量值大于或等于第三预设门限,P为大于或等于1且小于或等于M的正整数。
- 如权利要求25或26所述的网络侧设备,其特征在于,所述接收单元,还用于接收所述终端设备发送的第二波束跟踪消息,其中所述第二波束跟踪消息为RRC层消息,所述第二波束跟踪消息包括分别属于至少一个小区中每个小区的至少两个参考波束的索引,所述每个小区的至少两个参考波束为所述每个小区中第二波束参考质量值最高的至少两个波束。
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EP3493423A4 (en) | 2019-07-03 |
JP2019525643A (ja) | 2019-09-05 |
JP6896061B2 (ja) | 2021-06-30 |
BR112019002698A2 (pt) | 2019-05-28 |
EP3493423B1 (en) | 2023-10-04 |
CN107733497B (zh) | 2020-09-29 |
AU2017311078A1 (en) | 2019-02-28 |
CN107733497A (zh) | 2018-02-23 |
US20190238210A1 (en) | 2019-08-01 |
CN110417450B (zh) | 2021-08-03 |
AU2020256361B2 (en) | 2022-08-11 |
US11233558B2 (en) | 2022-01-25 |
EP3493423A1 (en) | 2019-06-05 |
CN110417450A (zh) | 2019-11-05 |
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