A method and device for determining quality information of a cell

Abstract

A method and device for determining the quality information of a cell, relating to the field of communication technology. The method includes: a terminal device receives first information from a first network device, the first information is used to indicate that a first cell is associated with a first SSB and a second SSB, and the frequency information of the first SSB is different from the frequency information of the second SSB; and the terminal device determines the quality information of the first cell according to the measurement value of the first SSB and the measurement value of the second SSB. In this way, after the terminal device learns that the first cell is associated with two SSBs according to the first information sent by the first network device, the measurement values ​​of the two SSBs can be comprehensively considered to determine the quality information of the first cell, thereby effectively improving the accuracy of determining the quality information of the cell.

Description

Technical Field

[0001] The present application relates to the field of wireless communication technology, and in particular to a method and device for determining quality information of a cell. Background Art

[0002] In the fifth generation th In the 5G generation (5G) communication system, the terminal device can synchronize with the network device and obtain system messages by receiving synchronization signals and PBCH blocks (synchronization signal and PBCH block, SSB). Among them, the primary synchronization signal (PSS), the secondary synchronization signal (SSS) and the physical broadcast channel (PBCH) together constitute an SSB. Furthermore, the network device can use different beams on a frequency point to send SSB at different time domain locations. In this way, since the network device has to open the transmission channel at each time domain location, the energy consumption of the network device is relatively large.

[0003] In order to save energy consumption of network equipment, an energy-saving solution is currently introduced, that is, network equipment sends SSB through multiple frequency points in the frequency domain, thereby reducing the time that network equipment needs to open the transmission channel and achieving energy saving effect. However, using this method, how terminal equipment determines the quality information of the cell still needs further research. Summary of the invention

[0004] The present application provides a method and device for determining quality information of a cell, so as to improve the accuracy of determining the quality information of the cell.

[0005] In a first aspect, an embodiment of the present application provides a method for determining quality information of a cell, which can be applied to a terminal device, or can also be applied to a chip inside the terminal device. Taking the application of the method to a terminal device as an example, in the method, the terminal device receives first information from a first network device, the first information is used to indicate that the first cell is associated with a first SSB and a second SSB, and the frequency information of the first SSB is different from the frequency information of the second SSB; and the terminal device determines the quality information of the first cell based on the measurement value of the first SSB and the measurement value of the second SSB.

[0006] Using this method, after the terminal device learns that the first cell is associated with two SSBs based on the first information sent by the first network device, it can comprehensively consider the measurement values ​​of the two SSBs to determine the quality information of the first cell, thereby effectively improving the accuracy of determining the cell's quality information.

[0007] In one possible design, the quality information of the first cell is determined based on the measurement value of the first SSB, the measurement value of the second SSB and auxiliary parameters; the auxiliary parameters are obtained from the first network device; the auxiliary parameters include a preset threshold, a coefficient of the measurement value of the first SSB, and a coefficient of the measurement value of the second SSB.

[0008] In one possible design, the quality information of the first cell is determined based on the measurement value of the first SSB, the measurement value of the second SSB and auxiliary parameters, including: if the measurement value of the first SSB and the measurement value of the second SSB are both greater than or equal to a preset threshold, then the quality information of the first cell is determined based on the coefficient of the measurement value of the first SSB, the coefficient of the measurement value of the second SSB, the measurement value of the first SSB and the measurement value of the second SSB; or, if the measurement value of the first SSB or the measurement value of the second SSB is less than the preset threshold, then the quality information of the first cell is determined based on the maximum measurement value of the measurement value of the first SSB and the measurement value of the second SSB.

[0009] In one possible design, the method also includes: receiving second information from a second network device, the second information including a first offset and a second offset; wherein the first offset is a frequency domain offset between a first CRB where the subcarrier with the smallest subcarrier number mapped by the first SSB is located and a frequency domain reference point, and the second offset is a frequency domain offset between a second CRB where the subcarrier with the smallest subcarrier number mapped by the second SSB is located and the frequency domain reference point.

[0010] In one possible design, the method also includes: receiving third information from a second network device, the third information including a third offset and a fourth offset; wherein the third offset is the frequency domain offset between the frequency domain lower boundary position of the first SSB and the frequency domain lower boundary position of the first CRB, and the fourth offset is the frequency domain offset between the frequency domain lower boundary position of the second SSB and the frequency domain lower boundary position of the second CRB.

[0011] In one possible design, the method also includes: after determining that the first SSB is a service SSB, determining the frequency domain reference point according to the first offset and the third offset; or, after determining that the second SSB is a service SSB, determining the frequency domain reference point according to the second offset and the fourth offset.

[0012] Using this method, when a cell is associated with two SSBs, the terminal device can obtain the frequency domain offset corresponding to the frequency point information of each SSB from the network device, so that after the terminal device determines the service SSB, it can accurately determine the frequency domain reference point according to the frequency domain offset corresponding to the frequency point information of the service SSB, thereby avoiding errors in subsequent network device resource allocation.

[0013] In one possible design, the first cell is a cell where the terminal device resides; or, the first cell is a neighboring cell of the cell where the terminal device resides.

[0014] In one possible design, the first information includes one or more association relationship identifiers and frequency information of the SSB corresponding to each of the association relationship identifiers; wherein the frequency information of the first SSB and the frequency information of the second SSB correspond to the same association relationship identifier.

[0015] In one possible design, the first information is carried in a system message from the first network device.

[0016] In one possible design, the first cell is a cell accessed by the terminal device; or, the first cell is a neighboring cell of the cell accessed by the terminal device.

[0017] In one possible design, the first information is carried in an RRC reconfiguration message or an RRC recovery message from the first network device.

[0018] In one possible design, the RRC reconfiguration message or the RRC recovery message also includes a measurement event identifier; the method also includes: if it is determined that the quality information of the first cell meets the reporting conditions corresponding to the measurement event identifier, reporting the quality information of the first cell to the first network device.

[0019] In one possible design, the first information includes frequency information of a first SSB associated with the first cell and frequency information of a second SSB associated with the first cell.

[0020] In a second aspect, an embodiment of the present application provides a method for determining quality information of a cell, which can be applied to a network device, or can also be applied to a chip inside the network device. Taking the method applied to a network device as an example, in the method, the network device determines first information, the first information is used to indicate that the first cell is associated with the first SSB and the second SSB, and the frequency information of the first SSB is different from the frequency information of the second SSB; and the network device sends the first information to the terminal device, and the first information is used to determine the quality information of the first cell.

[0021] In this way, the network device instructs the terminal device to associate the first cell with the first SSB and the second SSB, so that the terminal device can comprehensively consider the measurement values ​​of the two SSBs to determine the quality information of the first cell, thereby effectively improving the accuracy of determining the cell's quality information.

[0022] In one possible design, the method also includes: sending second information to the terminal device, the second information including a first offset and a second offset; wherein the first offset is the frequency domain offset between the first CRB where the subcarrier with the smallest subcarrier number mapped by the first SSB is located and the frequency domain reference point, and the second offset is the frequency domain offset between the second CRB where the subcarrier with the smallest subcarrier number mapped by the second SSB is located and the frequency domain reference point.

[0023] In one possible design, the method also includes: sending third information to the terminal device, the third information including a third offset and a fourth offset; wherein the third offset is the frequency domain offset between the frequency domain lower boundary position of the first SSB and the frequency domain lower boundary position of the first CRB, and the fourth offset is the frequency domain offset between the frequency domain lower boundary position of the second SSB and the frequency domain lower boundary position of the second CRB.

[0024] In one possible design, the first cell is a cell where the terminal device resides; or, the first cell is a neighboring cell of the cell where the terminal device resides.

[0025] In one possible design, the first information includes one or more association relationship identifiers and frequency information of the SSB corresponding to each association relationship identifier; wherein the frequency information of the first SSB and the frequency information of the second SSB correspond to the same association relationship identifier.

[0026] In one possible design, the first information is carried in a system message from the first network device.

[0027] In one possible design, the first cell is a cell accessed by the terminal device; or, the first cell is a neighboring cell of the cell accessed by the terminal device.

[0028] In one possible design, the first information is carried in an RRC reconfiguration message or an RRC connection recovery message from the first network device.

[0029] In one possible design, the RRC reconfiguration message or the RRC connection recovery message also includes a measurement event identifier; the method also includes: receiving quality information of the first cell reported by the terminal device.

[0030] In one possible design, the first information includes frequency information of a first SSB associated with the first cell and frequency information of a second SSB associated with the first cell.

[0031] In the third aspect, the embodiment of the present application provides a method for determining a frequency domain reference point, which can be applied to a terminal device, or can also be applied to a chip inside the terminal device. Taking the method applied to a terminal device as an example, in the method, the terminal device receives second information from a network device, and the second information includes a first offset and a second offset; wherein the first offset is the frequency domain offset between the first CRB where the subcarrier with the smallest subcarrier number mapped by the first SSB is located and the frequency domain reference point, and the second offset is the frequency domain offset between the second CRB where the subcarrier with the smallest subcarrier number mapped by the second SSB is located and the frequency domain reference point; the first SSB and the second SSB are associated with the same cell, and the frequency point information of the first SSB and the frequency point information of the second SSB are different; and, after the terminal device determines that the first SSB is a service SSB, the frequency domain reference point is determined according to the first offset; or, after the terminal device determines that the second SSB is a service SSB, the frequency domain reference point is determined according to the second offset.

[0032] Using this method, when a cell is associated with two SSBs, the network device can send the frequency domain offset corresponding to the frequency point information of each SSB to the terminal device, so that after the terminal device determines the service SSB, it can accurately determine the frequency domain reference point according to the frequency domain offset corresponding to the frequency point information of the service SSB, thereby avoiding errors in subsequent network device resource allocation.

[0033] In one possible design, the method further includes: the terminal device receives third information from the network device, the third information includes a third offset and a fourth offset; wherein the third offset is the frequency domain offset between the frequency domain lower boundary position of the first SSB and the frequency domain lower boundary position of the first CRB, and the fourth offset is the frequency domain offset between the frequency domain lower boundary position of the second SSB and the frequency domain lower boundary position of the second CRB. The above-mentioned terminal device determines the frequency domain reference point according to the first offset, which may include: the terminal device determines the frequency domain reference point according to the first offset and the third offset; the above-mentioned terminal device determines the frequency domain reference point according to the second offset, which may include: the terminal device determines the frequency domain reference point according to the second offset and the fourth offset.

[0034] It should be noted that the second information and the third information may be received by the terminal device from the same network device, or may be received from different network devices.

[0035] In the fourth aspect, the embodiment of the present application provides a method for determining a frequency domain reference point, which can be applied to a network device, or can also be applied to a chip inside a network device. Taking the method applied to a network device as an example, in the method, the network device determines the second information and sends the second information to the terminal device, and the second information includes a first offset and a second offset; wherein the first offset is the frequency domain offset between the first CRB where the subcarrier with the smallest subcarrier number mapped by the first SSB is located and the frequency domain reference point, and the second offset is the frequency domain offset between the second CRB where the subcarrier with the smallest subcarrier number mapped by the second SSB is located and the frequency domain reference point; the first SSB and the second SSB are associated with the same cell, and the frequency point information of the first SSB is different from the frequency point information of the second SSB.

[0036] In one possible design, the method also includes: the network device sends third information to the terminal device, the third information includes a third offset and a fourth offset; wherein the third offset is the frequency domain offset between the frequency domain lower boundary position of the first SSB and the frequency domain lower boundary position of the first CRB, and the fourth offset is the frequency domain offset between the frequency domain lower boundary position of the second SSB and the frequency domain lower boundary position of the second CRB.

[0037] It should be noted that the second information and the third information may be sent from the same network device to the terminal device, or may be sent from different network devices to the terminal device.

[0038] In a fifth aspect, the present application provides a communication device, which may be a terminal device or a chip disposed inside the terminal device. The communication device has the function of implementing the first aspect or the third aspect, for example, the communication device includes a module or unit or means corresponding to the steps involved in the first aspect or the third aspect, and the function or unit or means may be implemented by software, or by hardware, or by hardware executing the corresponding software implementation.

[0039] In one possible design, the communication device includes a processing unit and a communication unit, wherein the communication unit can be used to send and receive signals to achieve communication between the communication device and other devices, for example, the communication unit is used to receive configuration information from a network device; the processing unit can be used to perform some internal operations of the communication device.

[0040] Based on this design, in one embodiment, the communication unit is used to receive first information from a first network device, where the first information is used to indicate that a first cell is associated with a first SSB and a second SSB, and the frequency information of the first SSB is different from the frequency information of the second SSB; the processing unit is used to determine the quality information of the first cell based on the measurement value of the first SSB and the measurement value of the second SSB.

[0041] In a possible implementation of this embodiment, the quality information of the first cell is determined based on the measurement value of the first SSB, the measurement value of the second SSB and auxiliary parameters; the auxiliary parameters are acquired from the first network device; the auxiliary parameters include a preset threshold, a coefficient of the measurement value of the first SSB, and a coefficient of the measurement value of the second SSB.

[0042] In a possible implementation of this embodiment, the quality information of the first cell is determined based on the measurement value of the first SSB, the measurement value of the second SSB and the auxiliary parameters, including: if the measurement value of the first SSB and the measurement value of the second SSB are both greater than or equal to a preset threshold, then the quality information of the first cell is determined based on the coefficient of the measurement value of the first SSB, the coefficient of the measurement value of the second SSB, the measurement value of the first SSB and the measurement value of the second SSB; or, if the measurement value of the first SSB or the measurement value of the second SSB is less than the preset threshold, then the quality information of the first cell is determined based on the maximum measurement value of the measurement value of the first SSB and the measurement value of the second SSB.

[0043] In a possible implementation of this embodiment, the communication unit is also used to receive second information from a second network device, the second information including a first offset and a second offset; wherein the first offset is the frequency domain offset between the first CRB where the subcarrier with the smallest subcarrier number mapped by the first SSB is located and the frequency domain reference point, and the second offset is the frequency domain offset between the second CRB where the subcarrier with the smallest subcarrier number mapped by the second SSB is located and the frequency domain reference point.

[0044] In a possible implementation of this embodiment, the communication unit is also used to receive third information from the second network device, and the third information includes a third offset and a fourth offset; wherein the third offset is the frequency domain offset between the frequency domain lower boundary position of the first SSB and the frequency domain lower boundary position of the first CRB, and the fourth offset is the frequency domain offset between the frequency domain lower boundary position of the second SSB and the frequency domain lower boundary position of the second CRB.

[0045] In a possible implementation of this embodiment, the processing unit is also used to: after determining that the first SSB is a service SSB, determine the frequency domain reference point according to the first offset and the third offset; or, after determining that the second SSB is a service SSB, determine the frequency domain reference point according to the second offset and the fourth offset.

[0046] In a possible implementation manner of this embodiment, the first cell is a cell where the terminal device resides; or, the first cell is a neighboring cell of the cell where the terminal device resides.

[0047] In a possible implementation of this embodiment, the first information includes one or more association relationship identifiers and the frequency information of the SSB corresponding to each association relationship identifier; wherein the frequency information of the first SSB and the frequency information of the second SSB correspond to the same association relationship identifier.

[0048] In a possible implementation manner of this embodiment, the first information is carried in a system message from the first network device.

[0049] In a possible implementation manner of this embodiment, the first cell is a cell accessed by the terminal device; or, the first cell is a neighboring cell of the cell accessed by the terminal device.

[0050] In a possible implementation manner of this embodiment, the first information is carried in an RRC reconfiguration message or an RRC recovery message from the first network device.

[0051] In a possible implementation of this embodiment, the RRC reconfiguration message or the RRC recovery message also includes a measurement event identifier; the processing unit is also used to report the quality information of the first cell to the first network device through the communication unit if it is determined that the quality information of the first cell meets the reporting conditions corresponding to the measurement event identifier.

[0052] In a possible implementation of this embodiment, the first information includes frequency information of a first SSB associated with the first cell and frequency information of a second SSB associated with the first cell.

[0053] Based on this design, in another embodiment, the communication unit is used to receive second information from a network device, the second information including a first offset and a second offset; wherein the first offset is the frequency domain offset between the first CRB where the subcarrier with the smallest subcarrier number mapped by the first SSB is located and the frequency domain reference point, and the second offset is the frequency domain offset between the second CRB where the subcarrier with the smallest subcarrier number mapped by the second SSB is located and the frequency domain reference point; the first SSB and the second SSB are associated with the same cell, and the frequency point information of the first SSB and the frequency point information of the second SSB are different; the processing unit is used to determine the frequency domain reference point according to the first offset after determining that the first SSB is a service SSB; or, after determining that the second SSB is a service SSB, determine the frequency domain reference point according to the second offset.

[0054] In a possible implementation of this embodiment, the communication unit is used to receive third information from a network device, and the third information includes a third offset and a fourth offset; wherein the third offset is the frequency domain offset between the frequency domain lower boundary position of the first SSB and the frequency domain lower boundary position of the first CRB, and the fourth offset is the frequency domain offset between the frequency domain lower boundary position of the second SSB and the frequency domain lower boundary position of the second CRB; the processing unit is specifically used to determine the frequency domain reference point according to the first offset and the third offset; or, to determine the frequency domain reference point according to the second offset and the fourth offset.

[0055] In another possible design, the communication device includes a processor and may also include a transceiver, the transceiver is used to send and receive signals, and the processor executes program instructions to complete the method in any possible design or implementation of the first aspect or the third aspect above. Among them, the communication device may also include one or more memories, and the memory is used to couple with the processor. The one or more memories may be integrated with the processor or may be separately provided from the processor, which is not limited in this application. The memory may store the necessary computer programs or instructions for implementing the functions involved in the first aspect or the third aspect above. The processor may execute the computer program or instructions stored in the memory, and when the computer program or instructions are executed, the communication device implements the method in any possible design or implementation of the first aspect or the third aspect above.

[0056] In another possible design, the communication device includes a processor and a memory, and the memory can store necessary computer programs or instructions for implementing the functions involved in the first aspect or the third aspect. The processor can execute the computer program or instructions stored in the memory, and when the computer program or instructions are executed, the communication device implements the method in any possible design or implementation of the first aspect or the third aspect.

[0057] In another possible design, the communication device includes at least one processor and an interface circuit, wherein at least one processor is used to communicate with other devices through the interface circuit and execute the method in any possible design or implementation of the first aspect or the third aspect above.

[0058] In a sixth aspect, the present application provides a communication device, which may be a network device or a chip disposed inside a network device. The communication device is capable of implementing the functions involved in the second aspect or the fourth aspect, for example, the communication device includes a module or unit or means corresponding to the steps involved in the second aspect or the fourth aspect, and the functions or units or means may be implemented by software, or by hardware, or by hardware executing the corresponding software implementation.

[0059] In one possible design, the communication device includes a processing unit and a communication unit, wherein the communication unit can be used to send and receive signals to achieve communication between the communication device and other devices, for example, the communication unit is used to send system information to a terminal device; the processing unit can be used to perform some internal operations of the communication device.

[0060] Based on this design, in one embodiment, the processing unit is used to determine first information, where the first information is used to indicate that the first cell is associated with the first SSB and the second SSB, and the frequency information of the first SSB and the frequency information of the second SSB are different; the communication unit is used to send first information to the terminal device, where the first information is used to determine quality information of the first cell.

[0061] In a possible implementation of this embodiment, the communication unit is also used to send second information to the terminal device, and the second information includes a first offset and a second offset; wherein the first offset is the frequency domain offset between the first CRB where the subcarrier with the smallest subcarrier number mapped by the first SSB is located and the frequency domain reference point, and the second offset is the frequency domain offset between the second CRB where the subcarrier with the smallest subcarrier number mapped by the second SSB is located and the frequency domain reference point.

[0062] In a possible implementation of this embodiment, the communication unit is also used to send third information to the terminal device, and the third information includes a third offset and a fourth offset; wherein the third offset is the frequency domain offset between the frequency domain lower boundary position of the first SSB and the frequency domain lower boundary position of the first CRB, and the fourth offset is the frequency domain offset between the frequency domain lower boundary position of the second SSB and the frequency domain lower boundary position of the second CRB.

[0063] In a possible implementation manner of this embodiment, the first cell is a cell where the terminal device resides; or, the first cell is a neighboring cell of the cell where the terminal device resides.

[0064] In a possible implementation of this embodiment, the first information includes one or more association relationship identifiers and the frequency information of the SSB corresponding to each association relationship identifier; wherein the frequency information of the first SSB and the frequency information of the second SSB correspond to the same association relationship identifier.

[0065] In a possible implementation manner of this embodiment, the first information is carried in a system message from the first network device.

[0066] In a possible implementation manner of this embodiment, the first cell is a cell accessed by the terminal device; or, the first cell is a neighboring cell of the cell accessed by the terminal device.

[0067] In a possible implementation manner of this embodiment, the first information is carried in an RRC reconfiguration message or an RRC connection recovery message from the first network device.

[0068] In a possible implementation manner of this embodiment, the RRC reconfiguration message or the RRC connection recovery message also includes a measurement event identifier; and the communication unit is further configured to receive quality information of the first cell reported by the terminal device.

[0069] In a possible implementation of this embodiment, the first information includes frequency information of a first SSB associated with the first cell and frequency information of a second SSB associated with the first cell.

[0070] Based on this design, in another embodiment, the processing unit is used to determine the second information; the communication unit is used to send the second information to the terminal device, and the second information includes a first offset and a second offset; wherein the first offset is the frequency domain offset between the first CRB where the subcarrier with the smallest subcarrier number mapped by the first SSB is located and the frequency domain reference point, and the second offset is the frequency domain offset between the second CRB where the subcarrier with the smallest subcarrier number mapped by the second SSB is located and the frequency domain reference point; the first SSB and the second SSB are associated with the same cell, and the frequency point information of the first SSB is different from the frequency point information of the second SSB.

[0071] In a possible implementation of this embodiment, the communication unit is also used for the network device to send third information to the terminal device, and the third information includes a third offset and a fourth offset; wherein the third offset is the frequency domain offset between the frequency domain lower boundary position of the first SSB and the frequency domain lower boundary position of the first CRB, and the fourth offset is the frequency domain offset between the frequency domain lower boundary position of the second SSB and the frequency domain lower boundary position of the second CRB.

[0072] In another possible design, the communication device includes a processor and may also include a transceiver, the transceiver is used to send and receive signals, and the processor executes program instructions to complete the method in any possible design or implementation of the second aspect or the fourth aspect above. Among them, the communication device may also include one or more memories, and the memory is used to couple with the processor. The one or more memories may be integrated with the processor or may be separated from the processor, which is not limited in this application. The memory may store the necessary computer programs or instructions for implementing the functions involved in the second aspect or the fourth aspect above. The processor may execute the computer program or instructions stored in the memory, and when the computer program or instructions are executed, the communication device implements the method in any possible design or implementation of the second aspect or the fourth aspect above.

[0073] In another possible design, the communication device includes a processor and a memory, and the memory can store necessary computer programs or instructions for implementing the functions involved in the second aspect or the fourth aspect. The processor can execute the computer program or instructions stored in the memory, and when the computer program or instructions are executed, the communication device implements the method in any possible design or implementation of the second aspect or the fourth aspect.

[0074] In another possible design, the communication device includes at least one processor and an interface circuit, wherein at least one processor is used to communicate with other devices through the interface circuit and execute the method in any possible design or implementation of the second aspect or the fourth aspect above.

[0075] In the seventh aspect, the present application provides a communication system, which includes a terminal device, and the terminal device is used to execute the method in any possible design of the first aspect or the third aspect mentioned above; the communication system may also include a network device, and the network device is used to execute the method in any possible design of the second aspect or the fourth aspect mentioned above.

[0076] In an eighth aspect, the present application provides a computer-readable storage medium, in which computer-readable instructions are stored. When a computer reads and executes the computer-readable instructions, the computer executes a method in any possible design of the first to fourth aspects above.

[0077] In a ninth aspect, the present application provides a computer program product. When a computer reads and executes the computer program product, the computer executes the method in any possible design of the first to fourth aspects above.

[0078] In a tenth aspect, the present application provides a chip, comprising a processor, wherein the processor is coupled to a memory and is used to read and execute a software program stored in the memory to implement a method in any possible design of the first to fourth aspects above.

[0079] These and other aspects of the present application will become more clearly understood in the description of the following embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0080] Figure 1 A schematic diagram of a network architecture applicable to an embodiment of the present application;

[0081] Figure 2 A schematic diagram of another network architecture applicable to the embodiments of the present application;

[0082] Figure 3 A schematic diagram of another network architecture applicable to the embodiments of the present application;

[0083] Figure 4a A schematic diagram of SSB provided in an embodiment of the present application;

[0084] Figure 4b A schematic diagram of a synchronous burst set provided in an embodiment of the present application;

[0085] Figure 4c-4g A schematic diagram of the time domain pattern of SSB provided in an embodiment of the present application;

[0086] Figure 5a A schematic diagram of using one frequency point to send SSB according to an embodiment of the present application;

[0087] Figure 5b A schematic diagram of using two frequency points to send SSB according to an embodiment of the present application;

[0088] Figure 6 A flowchart corresponding to the method for determining quality information of a cell provided in Embodiment 1 of the present application;

[0089] Figure 7 An example of a measurement identifier provided in an embodiment of the present application;

[0090] Figure 8 A flowchart corresponding to the method for determining quality information of a cell provided in Embodiment 2 of the present application;

[0091] Fig. 9 A schematic diagram of frequency domain reference points provided in an embodiment of the present application;

[0092] Fig.10 A possible exemplary block diagram of the device involved in the embodiments of the present application;

[0093] Fig.11 A schematic diagram of the structure of a terminal device provided in an embodiment of the present application;

[0094] Fig.12 A schematic diagram of the structure of a network device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0095] The technical solutions in the embodiments of the present invention will be described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0096] First, some terms in the embodiments of the present application are explained to facilitate understanding by those skilled in the art.

[0097] (1) Terminal device: It can be a wireless terminal device that can receive network device scheduling and instruction information. The wireless terminal device can be a device that provides voice and / or data connectivity to users, or a handheld device with wireless connection function, or other processing equipment connected to a wireless modem. The terminal device can communicate with one or more core networks or the Internet via a radio access network (RAN). The terminal device can be a mobile terminal device, such as a mobile phone (or "cellular" phone, mobile phone), a computer and a data card. For example, it can be a portable, pocket-sized, handheld, computer-built-in or vehicle-mounted mobile device that exchanges language and / or data with the radio access network. For example, personal communication service (PCS) phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), tablet computers (Pads), computers with wireless transceiver functions, and other devices. The wireless terminal device may also be referred to as a system, a subscriber unit, a subscriber station, a mobile station, a mobile station (MS), a remote station (remotestation), an access point (AP), a remote terminal device (remote terminal), an access terminal device (access terminal), a user terminal device (user terminal), a user agent, a subscriber station (SS), a customer premises equipment (CPE), a terminal, a user equipment (UE), a mobile terminal (MT), etc. The terminal device may also be a wearable device and a next generation communication system, for example, a terminal device in a 5G communication system or a terminal device in a future evolved public land mobile network (PLMN), etc.

[0098] (2) Network equipment: It can be equipment in a wireless network, for example, a network equipment can be a radio access network (RAN) node (or equipment) that connects a terminal device to a wireless network, which can also be called a base station. At present, some examples of RAN equipment are: a new generation Node B (gNodeB) in a 5G communication system, a transmission reception point (TRP), an evolved Node B (eNB), a radio network controller (RNC), a Node B (NB), a base station controller (BSC), a base transceiver station (BTS), a home base station (e.g., home evolved Node B, or home Node B, HNB), a base band unit (BBU), or a wireless fidelity (Wi-Fi) access point (AP). In addition, in a network structure, a network equipment can include a centralized unit (CU) node, a distributed unit (DU) node, or a RAN equipment including a CU node and a DU node. In addition, in other possible cases, the network device may be other devices that provide wireless communication functions for the terminal device. The embodiments of the present application do not limit the specific technology and specific device form adopted by the network device. For the convenience of description, in the embodiments of the present application, the device that provides wireless communication functions for the terminal device is called a network device.

[0099] (3) The terms "system" and "network" in the embodiments of the present application can be used interchangeably. "At least one" means one or more, and "plurality" means two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. The character " / " generally indicates that the objects associated with each other are in an "or" relationship. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, "at least one of A, B and C" includes A, B, C, AB, AC, BC or ABC. And, unless otherwise specified, the ordinal numbers such as "first" and "second" mentioned in the embodiments of the present application are used to distinguish multiple objects, and are not used to limit the order, timing, priority or importance of multiple objects.

[0100] Figure 1 Schematic diagram of a network architecture applicable to the embodiment of the present application. Figure 1 As shown, the terminal device 130 can access the wireless network to obtain services of the external network (such as the Internet) through the wireless network, or communicate with other devices through the wireless network, such as communicating with other terminal devices. The wireless network includes a RAN and a core network (CN), wherein the RAN is used to access the terminal device (such as the terminal device 1301 or the terminal device 1302) to the wireless network, and the CN is used to manage the terminal device and provide a gateway for communicating with the external network.

[0101] The RAN may include one or more RAN devices, such as RAN device 1101 and RAN device 1102 .

[0102] The CN may include one or more CN devices, such as CN device 120. Figure 1 When the network architecture shown is applicable to a 5G communication system, the CN device 120 may be an access and mobility management function (AMF) entity or a user plane function (UPF) entity, etc.

[0103] It should be understood that Figure 1 The number of devices in the communication system shown is for illustration only, and the embodiments of the present application are not limited thereto. In actual applications, the communication system may include more terminal devices, more RAN devices, and other devices.

[0104] Figure 2 FIG. 1 is another schematic diagram of a network architecture applicable to the embodiment of the present application. Figure 2 As shown, the network architecture includes CN equipment, RAN equipment and terminal equipment. Among them, the RAN equipment includes a baseband device and a radio frequency device, wherein the baseband device can be implemented by one node or by multiple nodes, and the radio frequency device can be implemented independently from the baseband device, or integrated in the baseband device, or some functions are integrated independently and some functions are integrated in the baseband device. For example, in an LTE communication system, the RAN equipment includes a baseband device and a radio frequency device, wherein the radio frequency device can be arranged remotely relative to the baseband device, for example, a remote radio unit (RRU) is a remote wireless unit arranged relative to the BBU.

[0105] The communication between RAN equipment and terminal equipment follows a certain protocol layer structure. For example, the control plane protocol layer structure may include functions of protocol layers such as the RRC layer, packet data convergence protocol (PDCP) layer, radio link control (RLC) layer, media access control (MAC) layer and physical layer; the user plane protocol layer structure may include functions of protocol layers such as the PDCP layer, RLC layer, MAC layer and physical layer; in a possible implementation, a service data adaptation protocol (SDAP) layer may also be included above the PDCP layer.

[0106] The RAN device may implement the functions of the protocol layers such as RRC, PDCP, RLC and MAC by one node, or may implement the functions of these protocol layers by multiple nodes. For example, in an evolutionary structure, the RAN device may include a CU) and a DU, and multiple DUs may be centrally controlled by one CU. Figure 2 As shown, CU and DU can be divided according to the protocol layers of the wireless network, for example, the functions of the PDCP layer and above protocol layers are set in the CU, and the functions of the protocol layers below the PDCP, such as the RLC layer and the MAC layer, are set in the DU.

[0107] This division of the protocol layer is only an example. It can also be divided in other protocol layers, such as dividing in the RLC layer, setting the functions of the RLC layer and the protocol layers above in the CU, and the functions of the protocol layers below the RLC layer in the DU; or dividing in a certain protocol layer, for example, setting some functions of the RLC layer and the functions of the protocol layers above the RLC layer in the CU, and setting the remaining functions of the RLC layer and the functions of the protocol layers below the RLC layer in the DU. In addition, it can also be divided in other ways, such as dividing by latency, setting the functions whose processing time needs to meet the latency requirements in the DU, and the functions that do not need to meet the latency requirements in the CU.

[0108] In addition, the radio frequency device can be independently integrated and not placed in the DU, or it can be integrated in the DU, or partly remotely located and partly integrated in the DU, without any limitation here.

[0109] Figure 3 FIG. 1 is another schematic diagram of a network architecture applicable to an embodiment of the present application. Figure 2 The network architecture shown, Figure 3 The control plane (CP) and the user plane (UP) of the CU can also be separated and implemented by dividing them into different entities, namely, a control plane (CP) CU entity (i.e., a CU-CP entity) and a user plane (UP) CU entity (i.e., a CU-UP entity).

[0110] In the above network architecture, the signaling generated by the CU can be sent to the terminal device through the DU, or the signaling generated by the terminal device can be sent to the CU through the DU. The DU can directly encapsulate the signaling through the protocol layer and transparently transmit it to the terminal device or CU without parsing it. In the following embodiments, if the transmission of such signaling between the DU and the terminal device is involved, at this time, the sending or receiving of the signaling by the DU includes this scenario. For example, the signaling of the RRC or PDCP layer will eventually be processed as the signaling of the PHY layer and sent to the terminal device, or it will be converted from the received signaling of the PHY layer. Under this architecture, the signaling of the RRC or PDCP layer can also be considered to be sent by the DU, or sent by the DU and the RF loader.

[0111] Above Figure 1 , Figure 2 or Figure 3 The network architecture shown can be applicable to communication systems of various radio access technologies (RAT), for example, a 4G (or long term evolution (LTE)) communication system, a 5G (or new radio (NR)) communication system, or a transition system between an LTE communication system and a 5G communication system, which can also be called a 45G communication system, and of course, a future communication system. The network architecture and business scenarios described in the embodiments of the present application are intended to more clearly illustrate the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided in the embodiments of the present application. It is known to those skilled in the art that with the evolution of the communication network architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

[0112] The devices in the following embodiments of the present application may be located in a terminal device or a network device according to the functions implemented. When the above CU-DU structure is adopted, the network device may be a CU, or a DU, or a RAN device including a CU and a DU.

[0113] exist Figure 1 , Figure 2 or Figure 3 In the network architecture shown in FIG. 1 , the terminal device can synchronize with the network device and demodulate the system message by receiving the SSB from the network device. Figure 4a to Figure 4g Describe the relevant technical features involved in SSB.

[0114] (1) Composition of SSB

[0115] In the embodiment of the present application, PSS, SSS and PBCH together constitute an SSB. Figure 4a As shown, in the time domain, one SSB occupies four orthogonal frequency division multiplexing (OFDM) symbols, which are symbols 0 to 3. In the frequency domain, one SSB occupies 20 resource blocks (RBs) (one RB includes 12 subcarriers), that is, 240 subcarriers, and the subcarriers are numbered 0 to 239. The PSS is located on the middle 127 subcarriers of symbol 0, and the SSS is located on the middle 127 subcarriers of symbol 2. In order to protect the PSS and SSS, there are different protection subcarriers, which are not used to carry signals. Subcarriers are reserved on both sides of the SSS as protection subcarriers, as shown in FIG. Figure 4a The blank areas on both sides of the SSS in the PBCH are the guard subcarriers. The PBCH occupies all subcarriers in symbols 1 and 3, and occupies a portion of the remaining subcarriers in all subcarriers of symbol 2 except the subcarriers occupied by the SSS (i.e., the remaining subcarriers except the guard subcarriers).

[0116] Among them, PSS can be used to transmit the cell number, SSS can be used to transmit the cell group number, and the cell number and the cell group number together determine multiple physical cell identities (PCI) in the 5G communication system. Once the terminal device successfully searches for PSS and SSS, it will know the physical cell number of this 5G carrier, and thus have the ability to parse the system information contained in the SSB.

[0117] The system information in SSB is carried by the PBCH channel. Since this information is necessary for terminal devices to access the network, it can be called the main information block (MIB). The MIB can contain the system frame number, the initial access subcarrier spacing, and other information.

[0118] Since the information contained in MIB is limited, it is not enough to support terminal devices to access 5G cells. Therefore, the terminal device must also obtain some necessary system messages, such as system information block (SIB) 1. SIB1 is transmitted on the physical downlink shared channel (PDSCH) with a period of 160 milliseconds. Since the terminal device has obtained the parameters used for SIB1 transmission and the distribution of control resources for scheduling it in the MIB carried by PBCH, it can receive SIB1. In this way, the terminal device can obtain the system messages necessary to access the 5G cell and can subsequently access the 5G cell.

[0119] (2) SSB transmission mechanism

[0120] In the 5G communication system, for a cell (or carrier), the network equipment can use one frequency point to send SSB through different beams at different times to complete the broadcast beam coverage of the cell, such as Figure 4b shown.

[0121] The set of SSBs sent by a network device during a beam scan can be called a synchronization signal burst set (SS burst set). The period of the SS burst set is equivalent to the period of the SSB corresponding to a specific beam, which can be configured to 5ms (milliseconds), 10ms, 20ms, 40ms, 80ms or 160ms, etc. Since the terminal device cannot wait too long on a certain frequency when searching for a cell, it defaults to 20ms; if the terminal device waits for 20ms on a certain frequency and has not found an SSB, it is considered that there is no 5G cell on this frequency, and then it can switch to the next frequency to try again.

[0122] Currently, there are a maximum of 4, 8, or 64 SSBs in one SS burst set cycle. When the carrier frequency band is less than or equal to 3 GHz, there are a maximum of 4 SSBs in one SS burst set cycle. Each SS burst set is always within a 5 ms time interval. For a schematic diagram of SS burst set, please refer to Figure 4b , Figure 4b For example, the period of an SS burst set is 20 ms, and an SS burst set includes P SSBs.

[0123] (3) Time-frequency position of SSB

[0124] The time domain position of SSB may be specified by the protocol, which specifies the relationship between different subcarrier spacings (SCS) and the time domain pattern of SSB. Figure 4c , Figure 4d , Figure 4e , Figure 4f and Figure 4g , these figures respectively represent the time domain pattern of SSB.

[0125] Figure 4c It represents a time domain pattern of SSB included in a time slot when the subcarrier spacing is 15KHz. It can be seen that a time slot includes 2 SSBs. Figure 4c The square with diagonal lines in it represents the OFDM symbol occupied by SSB.

[0126] Figure 4d It represents a time domain pattern of SSB included in a time slot when the subcarrier spacing is 30KHz. It can be seen that a time slot includes 2 SSBs. Figure 4d The square with diagonal lines in it represents the OFDM symbol occupied by SSB.

[0127] Figure 4e Another time domain pattern of SSB included in a time slot when the subcarrier spacing is 30KHz. It can be seen that a time slot includes 2 SSBs. Figure 4e The square with diagonal lines in it represents the OFDM symbol occupied by SSB.

[0128] Figure 4f It represents a time domain pattern of SSB included in a time slot when the subcarrier spacing is 120KHz. It can be seen that a time slot includes 4 SSBs. Figure 4f The square with diagonal lines in it represents the OFDM symbol occupied by SSB.

[0129] Figure 4g It represents a time domain pattern of SSB included in a time slot when the subcarrier spacing is 240KHz. It can be seen that a time slot includes 8 SSBs. Figure 4g The square with diagonal lines in it represents the OFDM symbol occupied by SSB.

[0130] In the 4G communication system, SSB can be located at the center of the carrier. Since the system bandwidth of the 5G communication system is large, for example, the high frequency can reach 400MHz, which is much larger than the system bandwidth of 4G (maximum 20MHz), if the SSB is placed at the center of the carrier like the 4G communication system, the terminal device will search for SSB at all frequency points of the system bandwidth, which will cause the terminal device to take a long time and consume a lot of power. Therefore, in the 5G communication system, SSB is no longer placed at the center of the carrier, but at some possible positions in each frequency band. Furthermore, each frequency band can correspond to multiple frequency point information (such as absolute radio frequency channel number (ARFCN)), and each frequency point information can correspond to multiple possible positions (the network device will send SSB at one of the possible positions). For a certain frequency point information, the terminal device can blindly detect multiple possible positions according to the synchronization grid to obtain the frequency domain position of SSB.

[0131] The 3rd Generation Partnership Project (3GPP) is currently discussing energy saving for network equipment (i.e. base stations). Energy saving for network equipment is mainly to reduce energy consumption and save costs. One possible energy saving solution is that the network equipment will use the SSB sent in a frequency point period to perform superimposed transmission in the frequency domain (for example, using two frequency points in the frequency domain and halving the transmission time in the time domain), thereby reducing the transmission time in the time domain to achieve energy saving.

[0132] For example, see Figure 5a As shown in the figure, the network device uses one frequency point and sends SSB (SSB#0 to SSB#7) at 8 positions in the time domain. For example, frequency point f1 is used to send SSB#0 to SSB#7. In this way, the network device must open the transmission channel at each time domain position, which results in a longer opening time for the transmission channel and higher energy consumption. Figure 5b As shown, the network device uses two frequencies to send SSB (SSB#0 to SSB#7) at four locations in the time domain. For example, frequency f1 is used to send SSB#0 to SSB#3, and frequency f2 is used to send SSB#4 to SSB#7. In this way, the network device sends SSB through multiple frequencies in the frequency domain, which can effectively shorten the time to open the transmission channel in the time domain and effectively reduce energy consumption.

[0133] However, after the introduction of the above energy-saving scheme, some problems may arise, such as the quality information of the cell determined by the terminal device may be inaccurate (referred to as problem 1), and the frequency domain reference point may be inaccurately determined by the terminal device (referred to as problem 2). The embodiments of the present application will study the corresponding solutions to these problems.

[0134] 1. Regarding Question 1

[0135] In an embodiment of the present application, the quality information of a cell is used to reflect the quality of the cell, and the quality of the cell may refer to the quality of communication between a terminal device and a network device in the cell. Exemplarily, the quality information of a cell may be obtained by the terminal device by measuring a signal sent by a network device in the cell, and the quality information of the cell may include at least one of a reference signal receiving power (RSRP), a reference signal receiving quality (RSRQ), and a signal to interference plus noise ratio (SINR).

[0136] For example, for a terminal device in an RRC idle (RRC_IDLE) state or an RRC inactive (Inactive) state, the quality information of the cell can be obtained by measuring the SSB sent by the network device on the cell. For a terminal device in an RRC connected (RRC_CONNECTED) state, the quality information of the cell can be obtained by measuring the SSB or channel state information-reference signals (CSI-RS) sent by the network device on the cell. In the embodiment of the present application, the description will mainly be based on the example of a terminal device obtaining the quality information of the cell by measuring the SSB.

[0137] In the current solution (such as network equipment using Figure 5a When the terminal device determines the quality information of a cell, it can measure the SSB at the frequency point f1 associated with the cell, and then evaluate the quality information of the cell based on the measured value of the SSB. Figure 5b After the SSB is sent in the manner shown in the figure, a cell may correspond to multiple frequency points (for example, two frequency points). If the terminal equipment still adopts the above scheme to determine the quality information of the cell, such as determining the quality information of the cell according to the measurement value of the SSB on the frequency point f1 or determining the quality information of the cell according to the measurement value of the SSB on the frequency point f2, without comprehensively considering the measurement values ​​of the SSB on the two frequency points, the determined quality information of the cell will be inaccurate.

[0138] Based on this, an embodiment of the present application provides a method for determining quality information of a cell, which is used to improve the accuracy of determining the quality information of the cell.

[0139] Exemplarily, the method provided in the embodiment of the present application may include: a terminal device receives first information from a first network device, the first information is used to indicate a first SSB and a second SSB associated with a first cell, and the frequency information of the first SSB is different from the frequency information of the second SSB; further, the terminal device may determine the quality information of the first cell according to the measurement value of the first SSB and the measurement value of the second SSB. The frequency information of the first SSB is different from the frequency information of the second SSB, which may mean that the frequency used to send the first SSB is different from the frequency used to send the second SSB, for example, the first SSB is sent via the first frequency, and the second SSB is sent via the second frequency.

[0140] Using this method, after the terminal device learns that the first cell is associated with two SSBs based on the first information sent by the first network device, it can comprehensively consider the measurement values ​​of the two SSBs to determine the quality information of the first cell, thereby effectively improving the accuracy of determining the cell's quality information.

[0141] It should be noted that: (1) There are multiple ways for the first network device to send the first information. In one possible way, the first network device can send the first information by broadcasting, such as the first network device sending the first information through a system message (see Example 1 below); in another possible way, the first network device can send the first information to the terminal device through dedicated signaling, such as sending the first information to the terminal device through an RRC message (see Example 2 below).

[0142] (2) After the terminal device learns that the first cell is associated with the first SSB and the second SSB according to the first information, it can search for SSBs on the first frequency point and the second frequency point respectively, and then determine the quality information of the first cell according to the measurement values ​​of one or more SSBs searched on the first frequency point and the measurement values ​​of one or more SSBs searched on the second frequency point. In the embodiment of the present application, the terminal device determines the quality information of the first cell according to the measurement value of an SSB searched on the first frequency point (i.e., the first SSB) and the measurement value of an SSB searched on the second frequency point (i.e., the second SSB) as an example for description.

[0143] For example, Figure 5bTaking the illustrated situation as an example, the terminal device can search for SSB#0~SSB#3 on frequency point f1, and search for SSB#4~SSB#7 on frequency point f2, and then determine the quality information of the cell according to the measured values ​​of SSB#0~SSB#7. Considering that the information carried by SSB#0~SSB#3 corresponding to frequency point f1 is the same, and the information carried by SSB#4~SSB#7 corresponding to frequency point f2 is the same, therefore, in order to save the power consumption of the terminal device searching for SSB, the terminal device can search for one SSB on one frequency point, that is, the terminal device can search for one SSB (such as SSB#0) on frequency point f1, and search for one SSB (such as SSB#5) on frequency point f2, and then determine the quality information of the cell according to the measured values ​​of SSB#0 and SSB#5.

[0144] (3) In the embodiment of the present application, the first network device sends SSB on two frequencies for a cell as an example. To further save energy, the first network device may also send SSB on more frequencies. When the first network device sends SSB on more frequencies, the scheme in the embodiment of the present application may also be adaptively adjusted. For example, when the first network device sends SSB on four frequencies for the first cell, the first information may also be used to indicate that the first cell is associated with four SSBs, and then the terminal device may determine the quality information of the first cell based on the measurement values ​​of the SSBs received on the four frequencies.

[0145] (4) The first cell associates the first SSB with the second SSB, which can be understood as the first SSB and the second SSB are both SSBs sent by the network device on the first cell. The first cell associates the first SSB with the second SSB, which can also be described as the first cell associating the first frequency point information with the second frequency point information. Taking the first frequency point information as an example, the first frequency point information can be information used to identify the first frequency point, such as ARFCN. After the terminal device determines that the first cell is associated with the first frequency point information and the second frequency point information, it can search for the first SSB at the frequency domain position corresponding to the first frequency point information, and search for the second SSB at the frequency domain position corresponding to the second frequency point information.

[0146] (5) The SSB involved in the embodiments of the present application may refer to a cell defined SSB (cell defined-SSB, CD-SSB). Exemplarily, a network device may send multiple SSBs within the frequency range of a carrier; the PCI of the SSBs sent at different frequency domain positions does not have to be unique, that is, the SSBs sent at different frequency domain positions may have different PCIs. When an SSB is associated with remaining minimum system information (RMSI) (such as SIB1), the SSB corresponds to a single cell with a unique NR cell global identifier (NCGI), and the SSB is called a CD-SSB.

[0147] In the embodiments of the present application, there may be multiple scenarios in which the terminal device determines the quality information of the cell. For example, in a cell reselection scenario (the terminal device is in an idle state or an inactive state), the terminal device can determine the quality information of the cell currently resident and the quality information of the neighboring cells of the cell currently resident, so as to perform the reselection operation. For another example, in a cell switching scenario (the terminal device is in a connected state), the terminal device can determine the quality information of the currently accessed cell (i.e., the source cell) and the quality information of the neighboring cells of the currently accessed cell, so as to perform the switching operation.

[0148] The following describes in detail the solution provided in the embodiment of the present application by taking the cell reselection scenario and the cell switching scenario as examples.

[0149] Embodiment 1

[0150] In the first embodiment, a possible implementation of the solution provided in the embodiment of the present application will be described based on a cell reselection scenario.

[0151] First, the relevant technical features of cell reselection are described.

[0152] After the terminal device resides in a suitable cell and stays there for an appropriate time (for example, 1 second), it can perform a cell reselection process. Specifically, the terminal device can sort the cells that meet the S criteria in the candidate list for cell reselection according to the R criteria, where the cells that meet the S criteria can be simply understood as cells whose quality meets certain requirements, and are sorted according to the R criteria, for example, sorted in order from high to low according to the quality of the cells. For the cell with the highest ranking, that is, the highest ranked cell, when the terminal device resides in the current service cell for more than 1 second, and the time that the highest ranked cell is not the service cell of the terminal device is greater than the preset threshold, the terminal device reads the system information of the highest ranked cell to determine whether the highest ranked cell allows access. If so, the terminal device can reselect to the highest ranked cell and continue to perform the cell reselection process as described above in the highest ranked cell.

[0153] Cell reselection can be divided into intra-frequency cell reselection and inter-frequency cell reselection (i.e., cell reselection between different RATs). The parameters related to cell reselection are derived from the system information of the serving cell, such as SIB3, SIB4, and SIB5. Among them, SIB3 contains parameter information for intra-frequency and inter-frequency cell reselection, such as parameter information for the formula calculation of the R criterion for cell reselection sorting. SIB4 contains reselection configuration information for one or more cells for intra-frequency reselection; SIB5 contains reselection configuration information for one or more cells for inter-frequency reselection; the reselection configuration information of each cell may include the identification of the cell and the frequency point information associated with the cell.

[0154] Taking the reselection configuration information of one or more cells contained in SIB4 as an example, in the existing solution (such as Figure 5a In the scheme shown in the figure, each cell is associated with a frequency point information. As shown in Table 1, one or more cells include cell 1, cell 2 and cell 3, wherein the frequency point information associated with cell 1 is ARFCN-1, the frequency point information associated with cell 2 is ARFCN-2, and the frequency point information associated with cell 3 is ARFCN-3.

[0155] Community identification Frequency information Community 1 ARFCN-1 Community 2 ARFCN-2 Cell 3 ARFCN-3

[0156] Based on the above introduction to cell reselection, Figure 6 , describe the introduction of energy-saving solutions (such as Figure 5b After the scheme shown in the figure), the method for determining the quality information of the cell is provided in the embodiment of the present application.

[0157] Figure 6 This is a flow chart corresponding to the method for determining the quality information of a cell provided in the first embodiment of the present application, such as Figure 6 As shown, including:

[0158] Step 601: A first network device sends a system message, where the system message includes first information.

[0159] Among them, the first information is used to indicate that the first cell associates the first SSB and the second SSB, the first SSB is sent through the first frequency point, and the second SSB is sent through the second frequency point.

[0160] Accordingly, in step 602, the terminal device may receive a system message from the first network device and obtain the first information.

[0161] The following describes in detail two possible implementations of the first information in combination with implementation method 1 and implementation method 2.

[0162] Implementation 1: The first information may include reselection configuration information of one or more cells, wherein the one or more cells include a first cell. The reselection configuration information of the first cell includes an identifier of the first cell and first frequency point information and second frequency point information associated with the first cell.

[0163] For example, one or more cells include cell 1, cell 2, and cell 3, wherein the first frequency point information associated with cell 1 is ARFCN-1, and the second frequency point information is ARFCN-4; the first frequency point information associated with cell 2 is ARFCN-2, and the second frequency point information is ARFCN-5; the first frequency point information associated with cell 3 is ARFCN-3, and the second frequency point information is ARFCN-6. See Table 2 for an example of the content included in the first information.

[0164] Community identification First frequency information Second frequency information Community 1 ARFCN-1 ARFCN-4 Community 2 ARFCN-2 ARFCN-5 Cell 3 ARFCN-3 ARFCN-6

[0165] Using this method, when the first cell is associated with two frequency point information, the two frequency point information can be configured in the reselection configuration information of the first cell (that is, the reselection configuration information of the cell in the existing scheme is added or modified), so that after the terminal device receives the reselection configuration information of the first cell, it can be known that the first cell is associated with two frequency point information.

[0166] It should be noted that, in implementation mode 1, the above-mentioned cell 1, cell 2 and cell 3 may be cells used for intra-frequency reselection, in which case, the system message used to carry the first information may be SIB4. In other possible embodiments, cell 1, cell 2 and cell 3 may also be cells used for inter-frequency reselection, in which case, the system message used to carry the first information may be SIB5.

[0167] Implementation method 2: The first information may include one or more association relationship identifiers and frequency information of two SSBs corresponding to each association relationship identifier; wherein, the frequency information of two SSBs corresponding to each association relationship identifier can also be described as two frequency information corresponding to each association relationship identifier, such as frequency information 1 and frequency information 2. Furthermore, the two frequency information associated with the first cell correspond to the same association relationship identifier. In the embodiment of the present application, the association relationship identifier is used to associate the frequency information of two SSBs. The association relationship identifier can be information such as an association relationship number. Any information that can play a role in associating the frequency information of two SSBs can be understood as an association relationship identifier.

[0168] For example, one or more association relationship identifiers include association relationship 1, association relationship 2, and association relationship 3. The two frequency point information corresponding to association relationship 1 include ARFCN-1 and ARFCN-4, the two frequency point information corresponding to association relationship 2 include ARFCN-2 and ARFCN-5, and the two frequency point information corresponding to association relationship 3 include ARFCN-3 and ARFCN-6. See Table 3 for an example of the content included in the first information.

[0169] Association ID Frequency information 1 Frequency information 2 Relationship 1 ARFCN-1 ARFCN-4 Relationship 2 ARFCN-2 ARFCN-5 Relationship 3 ARFCN-3 ARFCN-6

[0170] In this way, when the first cell is associated with two frequency point information, the first network device can send the first information to the terminal device on the basis of sending the reselection configuration information of the first cell (that is, there is no need to add or modify the reselection configuration information of the cell in the existing solution); accordingly, after the terminal device receives the reselection configuration information of the first cell and the first information, it can learn that the first cell is associated with two frequency point information. Taking the first cell as the cell 1 described above as an example, the terminal device learns that cell 1 is associated with ARFCN-1 based on the reselection configuration information of cell 1 (see Table 1), and learns that ARFCN-1 and ARFCN-4 correspond to the same association relationship identifier based on the first information (see Table 3), and then can determine that cell 1 is associated with two frequency point information (ARFCN-1 and ARFCN-4, respectively).

[0171] It should be noted that: in implementation method 2, the first information can be carried in a system message (such as SIB4 or SIB5), for example, a new field can be added to the system message to carry the first information. In other possible embodiments, the first information can also be carried in other possible messages, which are not specifically limited; or, the first information can also be pre-defined by the protocol, in which case, the terminal device does not need to obtain the first information from the first network device. In the embodiment of the present application, the first information is carried in the system message as an example for description.

[0172] In the embodiment of the present application, the first cell may be the cell where the terminal device currently resides. In this case, the first cell is a cell within the coverage of the first network device. Alternatively, the first cell may also be a neighboring cell of the cell where the terminal device resides (such as the second cell). In this case, the first cell may be a cell within the coverage of the first network device, or may be a cell within the coverage of other network devices. That is to say, the terminal device may determine the quality information of the cell by applying the measurement method provided in the embodiment of the present application to multiple cells, thereby more accurately performing cell reselection and improving communication quality.

[0173] Step 603: The terminal device determines the quality information of the first cell based on the measurement value of the first SSB and the measurement value of the second SSB.

[0174] Among them, there are multiple ways for the terminal device to determine the quality information of the first cell based on the measurement value of the first SSB and the measurement value of the second SSB.

[0175] In a possible implementation, the first network device may send auxiliary parameter information to the terminal device, where the auxiliary parameter information includes a preset threshold, a coefficient of the measurement value of the first SSB, and a coefficient of the measurement value of the second SSB; wherein the preset threshold is used to determine whether the measurement value of the first SSB and the measurement value of the second SSB can be combined for calculation; the coefficient of the measurement value of the first SSB can be understood as the weight corresponding to the measurement value of the first SSB when participating in the combined calculation, or the contribution ratio of the measurement value of the first SSB to the quality information of the first cell when participating in the combined calculation; the meaning of the coefficient of the measurement value of the second SSB can refer to the coefficient of the measurement value of the first SSB, which will not be repeated. Accordingly, the terminal device receives the auxiliary parameter information and determines the quality information of the first cell based on the measurement value of the first SSB, the measurement value of the second SSB, and the auxiliary parameters.

[0176] For example, if the measurement value of the first SSB and the measurement value of the second SSB are both greater than or equal to the preset threshold, the measurement value of the first SSB and the measurement value of the second SSB are combined and calculated according to the coefficient of the measurement value of the first SSB and the coefficient of the measurement value of the second SSB to determine the quality information of the first cell. For example, the measurement value of the first SSB is X, the measurement value of the second SSB is Y, and both X and Y exceed the preset threshold (M). The coefficient of the measurement value of the first SSB is a, and the coefficient of the measurement value of the second SSB is b. The terminal device can determine that the quality information of the first cell is a function value of X, Y, a, and b, that is, f(X, Y, a, b), such as f(X, Y, a, b) = a*X+b*Y. By adopting this method, by setting and applying preset thresholds, it can be effectively ensured that the measurement values ​​of the SSBs participating in the combined calculation are relatively reasonable; further, considering that the frequency domain positions of different SSBs are different, the contribution rates to the quality information of the cell are also different. For example, if the central frequency domain position of the SSB is closer to the central frequency domain position of the cell, the contribution rate to the quality information of the cell is greater; if the central frequency domain position of the SSB is farther from the central frequency domain position of the cell, the contribution rate to the quality information of the cell is smaller. Then, when performing the combined calculation, by setting and applying the coefficient of the measurement value of each SSB, the quality information of the determined cell is more accurate.

[0177] For another example, if the measurement value of the first SSB is greater than or equal to a preset threshold and the measurement value of the second SSB is less than the preset threshold, the terminal device can determine the quality information of the first cell based on the measurement value of the first SSB. By setting and applying the preset threshold, the terminal device can remove unreasonable SSB measurement values ​​to improve the accuracy of determining the cell's quality information.

[0178] For another example, if the measurement value of the first SSB is less than the preset threshold, and the measurement value of the second SSB is greater than or equal to the preset threshold, the terminal device can determine the quality information of the first cell based on the measurement value of the second SSB. By setting and applying the preset threshold, the terminal device can remove unreasonable SSB measurement values ​​to improve the accuracy of determining the quality information of the cell.

[0179] For another example, if the measurement value of the first SSB and the measurement value of the second SSB are both less than a preset threshold, the terminal device can determine the quality information of the second cell based on the maximum measurement value of the measurement value of the first SSB and the measurement value of the second SSB.

[0180] Exemplarily, the auxiliary parameter information may be sent by the first network device to the terminal device via a system message. The auxiliary parameter information and the first information may be carried in the same system message, or may be carried in different system messages, which is not specifically limited.

[0181] It should be noted that in the above embodiment 1, the first cell is used as an example for description. In a specific implementation, when multiple cells are associated with two frequency point information, the terminal device can determine the quality information of multiple cells in the above manner, and then perform a cell reselection operation based on the determined quality information of multiple cells. Since the solution in the embodiment of the present application can effectively improve the accuracy of the quality information of the cell, it provides a more accurate basis for the terminal device to perform a cell reselection operation.

[0182] Embodiment 2

[0183] In the second embodiment, a possible implementation of the solution provided in the embodiment of the present application will be described based on a cell switching scenario.

[0184] First, the relevant technical features of cell switching are described.

[0185] When a terminal device in a connected state moves from one cell to another, a cell switching process is required to maintain uninterrupted communication. Specifically, the first network device can send measurement control information to the terminal device; after receiving the measurement control information, the terminal device can measure the serving cell and / or neighboring cell. If S-Measure is configured in the measurement control message, it is necessary to determine whether to perform neighboring cell measurement (which may include same-frequency and different-frequency) based on the configuration of S-Measure; when the measurement reporting conditions are met, the terminal device can report the measurement results to the first network device.

[0186] Exemplarily, the measurement control information may include a measurement object, a reporting configuration, a measurement identifier, etc. Among them, (1) the measurement object may be a frequency point information, and the terminal device may receive the SSB and perform measurement according to the frequency point information.

[0187] (2) Reporting configuration includes three types of measurement reporting and related configurations, where the three types of measurement reporting are: Type 1, measurement event triggers one report; where measurement events may include A1-A5, B1, and B2, and the number of reports is one. Type 2, periodic reporting; Type 3, measurement event triggers periodic reporting; where triggering events include A1-A5, B1, and B2, and the number of reports is multiple times. Wherein, A1-A5 is used for intra-system measurement, A1: the quality of the serving cell is higher than a certain threshold; A2: the quality of the serving cell is lower than a certain threshold; A3: the quality of the neighboring cell is higher than a certain value of the serving cell; A4: the quality of the neighboring cell is higher than a certain threshold; A5: the quality of the serving cell is lower than a certain threshold, and the quality of the neighboring cell is higher than a certain threshold. B1 and B2 are used for inter-system measurement, B1: the quality of the neighboring cell is higher than a certain threshold; B2: the quality of the serving cell is lower than a certain threshold, and the quality of the neighboring cell is higher than a certain threshold.

[0188] When the measurement report type is type 1 or type 3, the report configuration may include a measurement event identifier.

[0189] (3) The measurement identifier is used to associate a reporting configuration with a measurement object, that is, a measurement identifier is used to mark a measurement object + a reporting configuration. Figure 7 As shown, one measurement object may be associated with different reporting configurations, and one reporting configuration may also be associated with different measurement objects.

[0190] Based on the above introduction, the following Figure 8 , describe the introduction of energy-saving solutions (such as Figure 5b After the scheme shown in the figure), the method for determining the quality information of the cell is provided in the embodiment of the present application.

[0191] Figure 8 This is a flow chart corresponding to the method for determining the quality information of a cell provided in Embodiment 2 of the present application, such as Figure 8 As shown, including:

[0192] Step 801: A first network device sends an RRC message, where the RRC message includes first information.

[0193] Among them, the first information is used to indicate that the first cell associates the first SSB and the second SSB, the first SSB is sent through the first frequency point, and the second SSB is sent through the second frequency point.

[0194] Accordingly, in step 802, the terminal device may receive an RRC message from the first network device and obtain the first information.

[0195] Exemplarily, the RRC message may be an RRC connection reconfiguration message or an RRC reconfiguration message, or may be an RRC connection recovery message or an RRC recovery message or an RRC release message, without specific limitation.

[0196] The first information may include measurement object configuration information of one or more cells, the one or more cells include the first cell, and the measurement object configuration information of the first cell includes the first measurement object and the second measurement object of the first cell. The first measurement object may be the first frequency point information associated with the first cell, and the second measurement object may be the second frequency point information associated with the first cell. Furthermore, after receiving the first information, the terminal device may learn that the first cell is associated with two frequency point information.

[0197] In the embodiment of the present application, the first cell may be the cell currently accessed by the terminal device (i.e., the serving cell), in which case the first cell is a cell within the coverage of the first network device. Alternatively, the first cell may also be a neighboring cell of the cell accessed by the terminal device (such as the second cell), in which case the first cell may be a cell within the coverage of the first network device, or may also be a cell within the coverage of other network devices (such as the second network device).

[0198] Taking the first cell as the serving cell as an example, the measurement object (measObjectId) corresponding to the serving cell can be indicated by the servingCellMO field in the configuration information element ServingCellConfig of the serving cell. Since in the current solution, only one servingCellMO field is configured in the configuration information element of the serving cell, when the energy-saving solution is introduced (i.e., the serving cell is associated with two frequency point information), another servingCellMO field can be added to the configuration information element of the serving cell, that is, two servingCellMO fields are configured.

[0199] Step 803: The terminal device determines the quality information of the first cell based on the measurement value of the first SSB and the measurement value of the second SSB.

[0200] There are multiple ways for the terminal device to determine the quality information of the first cell based on the measurement value of the first SSB and the measurement value of the second SSB. In one possible implementation, the first network device may send auxiliary parameter information to the terminal device, and the auxiliary parameter information includes a preset threshold, a coefficient of the measurement value of the first SSB, and a coefficient of the measurement value of the second SSB, and then the terminal device receives the auxiliary parameter information and determines the quality information of the first cell based on the measurement value of the first SSB, the measurement value of the second SSB and the auxiliary parameters. For specific implementation, please refer to the description in Example 1.

[0201] Step 804: The terminal device determines that the quality information of the first cell meets the reporting condition corresponding to the measurement event identifier, and then reports the quality information of the first cell to the first network device.

[0202] Exemplarily, the RRC message may also include a measurement event identifier, for example, the measurement event identifier may be an identifier of measurement event A1, the first cell is the service cell, and the terminal device determines that the quality information of the first cell meets the reporting condition corresponding to the measurement event identifier, which may mean that after the terminal device determines the quality information of the service cell, it determines that the quality of the service cell is higher than a certain threshold value.

[0203] It should be noted that the above is described by taking the example that the terminal device determines the quality information of the first cell based on the measurement value of the first SSB and the measurement value of the second SSB and reports it to the first network device. In other possible embodiments, the terminal device may also report the measurement value of the first SSB and the measurement value of the second SSB to the first network device respectively, or report the maximum measurement value of the measurement value of the first SSB and the measurement value of the second SSB to the first network device, without specific limitation.

[0204] Furthermore, after receiving the measurement result reported by the terminal device, the first network device may instruct the terminal device to perform cell switching according to the measurement result.

[0205] 2. Regarding Question 2

[0206] After receiving the SSB, the terminal device can determine the frequency domain reference point (Point A) according to the frequency domain position of the SSB. Since the bandwidth is greatly increased and the flexibility of frequency domain resource allocation is increased in the 5G communication system, the concept of the center frequency point is weakened, and Point A is used as the reference point in the frequency domain to allocate resources. Furthermore, Point A is the center of subcarrier 0 of the common resource block (CRB); since different resources in the 5G communication system may use different subcarrier spacings, such as SSB and physical uplink shared channel (PUSCH) may have different subcarrier spacings, CRB is equivalent to a ruler for locating the position of these resources.

[0207] See also Fig. 9 As shown, after receiving the SSB, the terminal device can obtain the frequency lower boundary position (Kssb) of the SSB, and then obtain offset 1 from the ssb-subcarrierOffset field in the MIB and offset 2 from the OffsetToPoint A field in SIB1, where the offset 1 carried by the ssb-subcarrierOffset field represents the frequency domain offset between the frequency domain lower boundary position of the SSB and the frequency domain lower boundary position of the CRB where the subcarrier with the smallest subcarrier number mapped by the SSB is located, and the offset 2 carried by the OffsetToPointA field refers to the frequency domain offset between the CRB where the subcarrier with the smallest subcarrier number mapped by the SSB is located and the frequency domain reference point. Then the terminal device can know the position of PointA based on Kssb and these two offsets, as shown in the following formula:

[0208] Point A=Kssb+ssb-subcarrierOffset+OffsetToPointA

[0209] Among them, the specific description of ssb-subcarrierOffset and OffsetToPointA can be found in the relevant prior art, which will not be repeated here.

[0210] However, when a cell is associated with two frequency information, terminal device 1 may receive SSB#1 based on the first frequency information, and terminal device 2 may receive SSB#5 based on the second frequency information. Since the two parameters ssb-subcarrierOffset and OffsetToPoint1 in MIB and SIB1 are shared by multiple terminal devices, the PointA positions calculated by different terminal devices will be different, causing errors in subsequent network device resource allocation.

[0211] Based on this, an embodiment of the present application provides a method for determining a frequency domain reference point, so as to enable a terminal device to accurately determine a frequency domain reference point.

[0212] The method for determining a frequency domain reference point provided in an embodiment of the present application is described below in conjunction with embodiment three.

[0213] Embodiment 3

[0214] The terminal device receives the second information from the second network device, and the second information can be carried in the first system message, and the first system message can be SIB1. The second information includes a first offset and a second offset; the first offset is the frequency domain offset between the first CRB where the subcarrier with the smallest subcarrier number mapped by the first SSB is located and the frequency domain reference point, and the second offset is the frequency domain offset between the second CRB where the subcarrier with the smallest subcarrier number mapped by the second SSB is located and the frequency domain reference point. For example, SIB1 may include two OffsetToPointA fields, and the two OffsetToPointA fields correspond to different frequency point information, such as the two OffsetToPointA fields are OffsetToPointA field 1 and OffsetToPointA field 2, OffsetToPointA field 1 is used to carry the first offset, and OffsetToPointA field 2 is used to carry the second offset.

[0215] In addition, the terminal device can also receive third information from the second network device, and the third information can be carried in the second system message, and the second system message can be MIB. Among them, the third information includes a third offset and a fourth offset; the third offset is the frequency domain offset between the frequency domain lower boundary position of the first SSB and the frequency domain lower boundary position of the first CRB, and the fourth offset is the frequency domain offset between the frequency domain lower boundary position of the second SSB and the frequency domain lower boundary position of the second CRB. For example, the MIB may include two ssb-subcarrierOffset fields, and the two ssb-subcarrierOffset fields correspond to different frequency point information, such as the two ssb-subcarrierOffset fields are ssb-subcarrierOffset field 1 and ssb-subcarrierOffset field 2, ssb-subcarrierOffset field 1 is used to carry the third offset, and ssb-subcarrierOffset field 2 is used to carry the fourth offset.

[0216] Furthermore, the frequency information of the first SSB is different from the frequency information of the second SSB, for example, the frequency information of the first SSB is frequency information 1, and the frequency information of the second SSB is frequency information 2; the first SSB and the second SSB can be associated with the same cell, such as the first cell, and the above-mentioned second information or third information is sent by the second network device on the first cell.

[0217] When the terminal device determines that the first SSB is a service SSB, the frequency domain reference point can be determined using the above formula according to the first offset and the third offset. Alternatively, when the terminal device determines that the second SSB is a service SSB, the frequency domain reference point can be determined according to the second offset and the fourth offset. Among them, for the first cell, the terminal device receives the first SSB and establishes time domain synchronization with the first cell based on the first SSB. In this case, it can be understood that the terminal device determines that the first SSB is a service SSB.

[0218] For example, there may be multiple specific implementations of two OffsetToPointA fields corresponding to different frequency information, and two ssb-subcarrierOffset fields corresponding to different frequency information. The following describes two possible implementations by taking two ssb-subcarrierOffset fields corresponding to different frequency information as an example.

[0219] In method 1, the MIB may carry indication information, which is used to indicate the association between the two ssb-subcarrierOffset fields and the two frequency information, for example, ssb-subcarrierOffset field 1 corresponds to frequency information 1, and ssb-subcarrierOffset field 2 corresponds to frequency information 2. In this way, after the terminal device receives the first SSB according to the frequency information 1, it can be learned from the indication information in the MIB that the frequency information 1 corresponds to the ssb-subcarrierOffset field 1, and then the third offset carried in the ssb-subcarrierOffset field 1 is used as the offset to be used to determine the frequency domain reference point.

[0220] In method 2, the network devices send their own MIBs according to different frequency information. For example, MIB1 is sent according to frequency information 1, and MIB1 carries ssb-subcarrierOffset field 1, and MIB2 is sent according to frequency information 2, and MIB2 carries ssb-subcarrierOffset field 2. In this way, after the terminal device receives the first SSB according to frequency information 1, the third offset carried in ssb-subcarrierOffset field 1 of MIB1 can be used as the offset to determine the frequency domain reference point.

[0221] It should be noted that the case where SIB1 carries the OffsetToPointA field can be adaptively referred to the above-mentioned method 1 and method 2, and the details are not repeated here.

[0222] In an embodiment of the present application, considering that the third offset and the fourth offset may be the same, when the third offset and the fourth offset are the same, the existing solution can also be adopted, that is, the MIB includes an ssb-subcarrierOffset field, and the offset carried by the ssb-subcarrierOffset field is shared by multiple terminal devices.

[0223] Regarding the above-mentioned embodiments 1 to 3, it should be noted that:

[0224] (1) The above-mentioned embodiments 1 to 3 can be implemented separately or in combination. For example, embodiment 1 and embodiment 2 can be implemented in combination; for another example, embodiment 1 and embodiment 2 can be implemented in combination with embodiment 3.

[0225] ① When embodiment one and embodiment two are implemented in combination, for example, the terminal device can reselect to the first cell according to the solution in embodiment one, and after accessing the first cell, switch to another cell using the solution in embodiment two.

[0226] ② When the first embodiment and the third embodiment are implemented in combination, the first cell in the first embodiment and the first cell in the third embodiment may be the same cell. For example, when the first cell is the cell where the terminal device resides, the first network device and the second network device may be the same network device; in this case, when the terminal device resides in the first cell, the cell reselection may be performed according to the scheme in the first embodiment, and the SSB associated with the first cell may be received and the frequency domain reference point may be determined according to the scheme in the third embodiment, wherein the cell reselection operation and the operation of determining the frequency domain reference point may be performed simultaneously, or may not be performed simultaneously, without specific limitation.

[0227] For another example, when the first cell is a neighboring cell of the cell where the terminal device resides, the first network device and the second network device may be the same network device or may be different network devices; in this case, after the terminal device reselects to the first cell according to the scheme in Example 1, it can receive the SSB associated with the first cell and determine the frequency domain reference point according to the scheme in Example 3.

[0228] ③ When the second embodiment is implemented in combination with the third embodiment, the first cell in the second embodiment and the first cell in the third embodiment may be the same cell. For example, when the first cell is a cell accessed by the terminal device, the first network device and the second network device may be the same network device. In this case, before accessing the first cell, the terminal device may receive the SSB associated with the first cell and determine the frequency domain reference point according to the scheme in the third embodiment, and after accessing the first cell, the terminal device may perform cell switching according to the scheme in the second embodiment.

[0229] For another example, when the first cell is a neighboring cell of the cell accessed by the terminal device, the first network device and the second network device may be the same network device or may be different network devices. In this case, the terminal device may switch to the first cell according to the solution in Embodiment 2, and receive the SSB associated with the first cell and determine the frequency domain reference point according to the solution in Embodiment 3 before switching to the first cell.

[0230] (2) The step numbers of the flowcharts described in Examples 1 to 3 are only examples of the execution process and do not constitute a limitation on the order of execution of the steps. There is no strict execution order between the steps that have no temporal dependency relationship with each other in the embodiments of the present application. In addition, not all the steps shown in the flowcharts are steps that must be executed, and some steps can be added or deleted based on the actual needs of each flowchart.

[0231] The above mainly introduces the solution provided by the embodiment of the present application from the perspective of the interaction between the network device and the terminal device. It is understandable that in order to achieve the above functions, the network device or the terminal device may include a hardware structure and / or software module corresponding to the execution of each function. It should be easily appreciated by those skilled in the art that, in combination with the units and algorithm steps of each example described in the embodiments disclosed herein, the embodiments of the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the present application.

[0232] The embodiment of the present application can divide the terminal device and the network device into functional units according to the above method example. For example, each functional unit can be divided according to each function, or two or more functions can be integrated into one unit. The above integrated unit can be implemented in the form of hardware or software functional unit.

[0233] In the case of an integrated unit, Fig.10 A possible exemplary block diagram of the device involved in the embodiments of the present application is shown. Fig.10 As shown, the device 1000 may include: a processing unit 1002 and a communication unit 1003. The processing unit 1002 is used to control and manage the actions of the device 1000. The communication unit 1003 is used to support the communication between the device 1000 and other devices. Optionally, the communication unit 1003 is also called a transceiver unit, and may include a receiving unit and / or a sending unit, which are respectively used to perform receiving and sending operations. Optionally, the device 1000 may also include a storage unit 1001, which is used to store program code and / or data of the device 1000.

[0234] The apparatus 1000 may be a terminal device in any of the above embodiments, or may be a chip set in a terminal device. The processing unit 1002 may support the apparatus 1000 to perform the actions of the terminal device in each method example above. Alternatively, the processing unit 1002 mainly performs the internal actions of the terminal device in the method example, and the communication unit 1003 may support the communication between the apparatus 1000 and the network device. For example, the communication unit 1003 may be used to perform Figure 6 Step 602, Figure 8 Step 802, step 804 in; the processing unit 1002 can be used to perform Figure 6 Step 603, and Figure 8 Step 803.

[0235] Specifically, in one embodiment, the communication unit 1003 is used to receive first information from a first network device, wherein the first information is used to indicate that a first cell is associated with a first SSB and a second SSB, and the frequency information of the first SSB is different from the frequency information of the second SSB; the processing unit 1002 is used to determine the quality information of the first cell based on the measurement value of the first SSB and the measurement value of the second SSB.

[0236] In one possible design, the processing unit 1002 is specifically used to determine the quality information of the first cell based on the measurement value of the first SSB, the measurement value of the second SSB and auxiliary parameters; the auxiliary parameters are acquired by the communication unit 1003 from the first network device; the auxiliary parameters include a preset threshold, a coefficient of the measurement value of the first SSB, and a coefficient of the measurement value of the second SSB.

[0237] In one possible design, the processing unit 1002 is specifically used to: if the measurement value of the first SSB and the measurement value of the second SSB are both greater than or equal to the preset threshold, determine the quality information of the first cell according to the coefficient of the measurement value of the first SSB, the coefficient of the measurement value of the second SSB, the measurement value of the first SSB, and the measurement value of the second SSB; or, if the measurement value of the first SSB or the measurement value of the second SSB is less than the preset threshold, determine the quality information of the first cell according to the maximum measurement value of the measurement value of the first SSB and the measurement value of the second SSB.

[0238] In one possible design, the communication unit 1003 is also used to receive second information from a second network device, the second information including a first offset and a second offset; wherein the first offset is the frequency domain offset between the first CRB where the subcarrier with the smallest subcarrier number mapped by the first SSB is located and the frequency domain reference point, and the second offset is the frequency domain offset between the second CRB where the subcarrier with the smallest subcarrier number mapped by the second SSB is located and the frequency domain reference point.

[0239] In one possible design, the communication unit 1003 is also used to receive third information from the second network device, and the third information includes a third offset and a fourth offset; wherein the third offset is the frequency domain offset between the frequency domain lower boundary position of the first SSB and the frequency domain lower boundary position of the first CRB, and the fourth offset is the frequency domain offset between the frequency domain lower boundary position of the second SSB and the frequency domain lower boundary position of the second CRB.

[0240] In one possible design, the processing unit 1002 is also used to, after determining that the first SSB is a service SSB, determine the frequency domain reference point according to the first offset and the third offset; or, after determining that the second SSB is a service SSB, determine the frequency domain reference point according to the second offset and the fourth offset.

[0241] In one possible design, the first cell is the cell where the terminal device resides; or, the first cell is a neighboring cell of the cell where the terminal device resides.

[0242] In one possible design, the first information includes one or more association relationship identifiers and frequency information of the SSB corresponding to each of the association relationship identifiers; wherein the frequency information of the first SSB and the frequency information of the second SSB correspond to the same association relationship identifier.

[0243] In one possible design, the first information is carried in a system message from the first network device.

[0244] In one possible design, the first cell is a cell accessed by the terminal device; or, the first cell is a neighboring cell of the cell accessed by the terminal device.

[0245] In one possible design, the first information is carried in an RRC reconfiguration message or an RRC recovery message from the first network device.

[0246] In one possible design, the RRC reconfiguration message or the RRC recovery message also includes a measurement event identifier; the communication unit 1003 is also used to report the quality information of the first cell to the first network device if it is determined that the quality information of the first cell meets the reporting conditions corresponding to the measurement event identifier.

[0247] In one possible design, the first information includes frequency information of the first SSB associated with the first cell and frequency information of the second SSB associated with the first cell.

[0248] The apparatus 1000 may be a network device (such as the first network device or the second network device) in any of the above embodiments, or may be a chip set in the network device. The processing unit 1002 may support the apparatus 1000 to perform the actions of the network device in each method example above. Alternatively, the processing unit 1002 mainly performs the internal actions of the network device in the method example, and the communication unit 1003 may support the communication between the apparatus 1000 and other devices. For example, the communication unit 1003 may be used to perform Figure 6 Step 601 in , and Figure 8 Step 801 in .

[0249] Specifically, in one embodiment, the processing unit 1002 is used to determine first information, where the first information is used to indicate that a first cell is associated with a first SSB and a second SSB, and the frequency information of the first SSB is different from the frequency information of the second SSB; the communication unit 1003 is used to send first information to a terminal device, where the first information is used to determine quality information of the first cell.

[0250] In one possible design, the communication unit 1003 is also used to send second information to the terminal device, the second information including a first offset and a second offset; wherein the first offset is the frequency domain offset between the first CRB where the subcarrier with the smallest subcarrier number mapped by the first SSB is located and the frequency domain reference point, and the second offset is the frequency domain offset between the second CRB where the subcarrier with the smallest subcarrier number mapped by the second SSB is located and the frequency domain reference point.

[0251] In a possible design, the communication unit 1003 is also used to send third information to the terminal device, and the third information includes a third offset and a fourth offset; wherein the third offset is the frequency domain offset between the frequency domain lower boundary position of the first SSB and the frequency domain lower boundary position of the first CRB, and the fourth offset is the frequency domain offset between the frequency domain lower boundary position of the second SSB and the frequency domain lower boundary position of the second CRB.

[0252] In one possible design, the first information includes one or more association relationship identifiers and frequency information of the SSB corresponding to each of the association relationship identifiers; wherein the frequency information of the first SSB and the frequency information of the second SSB correspond to the same association relationship identifier.

[0253] In one possible design, the first information includes frequency information of the first SSB associated with the first cell and frequency information of the second SSB associated with the first cell.

[0254] It should be understood that the division of the units in the above device is only a division of logical functions. In actual implementation, they can be fully or partially integrated into one physical entity, or they can be physically separated. And the units in the device can all be implemented in the form of software calling through processing elements; they can also be all implemented in the form of hardware; some units can also be implemented in the form of software calling through processing elements, and some units can be implemented in the form of hardware. For example, each unit can be a separately established processing element, or it can be integrated in a certain chip of the device. In addition, it can also be stored in the memory in the form of a program, and called and executed by a certain processing element of the device. The function of the unit. In addition, all or part of these units can be integrated together, or they can be implemented independently. The processing element described here can also be a processor, which can be an integrated circuit with signal processing capabilities. In the implementation process, each step of the above method or each unit above can be implemented by an integrated logic circuit of hardware in the processor element or in the form of software calling through a processing element.

[0255] In one example, the unit in any of the above devices may be one or more integrated circuits configured to implement the above method, such as one or more application specific integrated circuits (ASIC), or one or more digital singnal processors (DSP), or one or more field programmable gate arrays (FPGA), or a combination of at least two of these integrated circuit forms. For another example, when the unit in the device can be implemented in the form of a processing element scheduler, the processing element can be a processor, such as a general-purpose central processing unit (CPU), or other processors that can call programs. For another example, these units can be integrated together and implemented in the form of a system-on-a-chip (SOC).

[0256] The above unit for receiving is an interface circuit of the device, which is used to receive signals from other devices. For example, when the device is implemented in the form of a chip, the receiving unit is an interface circuit of the chip used to receive signals from other chips or devices. The above unit for sending is an interface circuit of the device, which is used to send signals to other devices. For example, when the device is implemented in the form of a chip, the sending unit is an interface circuit of the chip used to send signals to other chips or devices.

[0257] Please refer to Fig.11, which is a schematic diagram of the structure of a terminal device provided in an embodiment of the present application. It can be the terminal device in the above embodiment, and is used to implement the operation of the terminal device in the above embodiment. Fig.11 As shown, the terminal device includes: an antenna 1110, a radio frequency part 1120, and a signal processing part 1130. The antenna 1110 is connected to the radio frequency part 1120. In the downlink direction, the radio frequency part 1120 receives information sent by the network device through the antenna 1110, and sends the information sent by the network device to the signal processing part 1130 for processing. In the uplink direction, the signal processing part 1130 processes the information of the terminal device and sends it to the radio frequency part 1120. The radio frequency part 1120 processes the information of the terminal device and sends it to the network device through the antenna 1110.

[0258] The signal processing part 1130 may include a modulation and demodulation subsystem for processing each communication protocol layer of the data; it may also include a central processing subsystem for processing the operating system and application layer of the terminal device; in addition, it may also include other subsystems, such as a multimedia subsystem, a peripheral subsystem, etc., wherein the multimedia subsystem is used to control the camera, screen display, etc. of the terminal device, and the peripheral subsystem is used to connect with other devices. The modulation and demodulation subsystem may be a separately provided chip.

[0259] The modem subsystem may include one or more processing elements 1131, for example, a main control CPU and other integrated circuits. In addition, the modem subsystem may also include a storage element 1132 and an interface circuit 1133. The storage element 1132 is used to store data and programs, but the program used to execute the method executed by the terminal device in the above method may not be stored in the storage element 1132, but stored in a memory outside the modem subsystem, and loaded and used by the modem subsystem when in use. The interface circuit 1133 is used to communicate with other subsystems.

[0260] The modem subsystem can be implemented by a chip, which includes at least one processing element and an interface circuit, wherein the processing element is used to execute each step of any method executed by the above terminal device, and the interface circuit is used to communicate with other devices. In one implementation, the unit of the terminal device that implements each step in the above method can be implemented in the form of a processing element scheduling program. For example, the device for the terminal device includes a processing element and a storage element, and the processing element calls the program stored in the storage element to execute the method executed by the terminal device in the above method embodiment. The storage element can be a storage element on the same chip as the processing element, that is, an on-chip storage element.

[0261] In another implementation, the program for executing the method executed by the terminal device in the above method can be in a storage element on a different chip from the processing element, that is, an off-chip storage element. In this case, the processing element calls or loads the program from the off-chip storage element to the on-chip storage element to call and execute the method executed by the terminal device in the above method embodiment.

[0262] In another implementation, the unit of the terminal device implementing each step in the above method may be configured as one or more processing elements, which are arranged on the modulation and demodulation subsystem. The processing elements here may be integrated circuits, such as one or more ASICs, or one or more DSPs, or one or more FPGAs, or a combination of these integrated circuits. These integrated circuits may be integrated together to form a chip.

[0263] The units of the terminal device implementing the various steps in the above method can be integrated together and implemented in the form of a SOC, and the SOC chip is used to implement the above method. The chip can integrate at least one processing element and a storage element, and the method executed by the above terminal device can be implemented in the form of a program stored in the storage element by the processing element; or, the chip can integrate at least one integrated circuit to implement the method executed by the above terminal device; or, the above implementation methods can be combined, and the functions of some units can be implemented in the form of a processing element calling a program, and the functions of some units can be implemented in the form of an integrated circuit.

[0264] It can be seen that the above apparatus for terminal equipment may include at least one processing element and an interface circuit, wherein at least one processing element is used to execute any of the methods performed by the terminal equipment provided in the above method embodiments. The processing element may execute part or all of the steps performed by the terminal equipment in a first manner: that is, by calling a program stored in a storage element; or in a second manner: that is, by combining an integrated logic circuit of hardware in a processor element with instructions to execute part or all of the steps performed by the terminal equipment; of course, the first manner and the second manner may also be combined to execute part or all of the steps performed by the terminal equipment.

[0265] The processing element here is the same as described above and can be implemented by a processor. The function of the processing element can be Fig.10 The processing unit described in the above has the same function. Exemplarily, the processing element may be a general-purpose processor, such as a CPU, or one or more integrated circuits configured to implement the above method, such as one or more ASICs, or one or more microprocessors DSPs, or one or more FPGAs, etc., or a combination of at least two of these integrated circuit forms. The storage element may be implemented by a memory, and the function of the storage element may be the same as Fig.10The storage element can be implemented by a memory, and the function of the storage element can be the same as that of the storage unit described in Fig.10 The storage element may be a memory or a collective name for multiple memories.

[0266] Fig.11 The terminal equipment shown is capable of implementing Figure 6 or Figure 8 The illustrated method embodiment involves various processes of a terminal device. Fig.11 The operations and / or functions of each module in the terminal device shown are respectively for implementing the corresponding processes in the above method embodiment. For details, please refer to the description in the above method embodiment. To avoid repetition, the detailed description is appropriately omitted here.

[0267] Please refer to Fig.12 , which is a schematic diagram of the structure of a network device provided in an embodiment of the present application. It is used to implement the operation of the network device (such as the first network device or the second network device) in the above embodiment. Fig.12 As shown, the network device includes: an antenna 1201, a radio frequency device 1202, and a baseband device 1203. The antenna 1201 is connected to the radio frequency device 1202. In the uplink direction, the radio frequency device 1202 receives information sent by the terminal device through the antenna 1201, and sends the information sent by the terminal device to the baseband device 1203 for processing. In the downlink direction, the baseband device 1203 processes the information of the terminal device and sends it to the radio frequency device 1202, and the radio frequency device 1202 processes the information of the terminal device and sends it to the terminal device through the antenna 1201.

[0268] The baseband device 1203 may include one or more processing elements 12031, for example, including a main control CPU and other integrated circuits. In addition, the baseband device 1203 may also include a storage element 12032 and an interface 12033, the storage element 12032 is used to store programs and data; the interface 12033 is used to interact with the radio frequency device 1202. The interface is, for example, a common public radio interface (CPRI). The above device for the network device may be located in the baseband device 1203. For example, the above device for the network device may be a chip on the baseband device 1203, the chip includes at least one processing element and an interface circuit, wherein the processing element is used to execute each step of any method executed by the above network device, and the interface circuit is used to communicate with other devices. In one implementation, the unit for the network device to implement each step in the above method can be implemented in the form of a processing element scheduler. For example, the device for the network device includes a processing element and a storage element, and the processing element calls the program stored in the storage element to execute the method executed by the network device in the above method embodiment. The storage element may be a storage element on the same chip as the processing element, ie, an on-chip storage element, or may be a storage element on a different chip from the processing element, ie, an off-chip storage element.

[0269] In another implementation, the unit of the network device implementing each step in the above method may be configured as one or more processing elements, which are arranged on the baseband device. The processing elements here may be integrated circuits, such as one or more ASICs, or one or more DSPs, or one or more FPGAs, or a combination of these integrated circuits. These integrated circuits may be integrated together to form a chip.

[0270] The units of the network device implementing the various steps in the above method can be integrated together and implemented in the form of a system-on-a-chip (SOC). For example, the baseband device includes the SOC chip to implement the above method. The chip can integrate at least one processing element and a storage element, and the processing element calls the stored program of the storage element to implement the method executed by the above network device; or, the chip can integrate at least one integrated circuit to implement the method executed by the above network device; or, the above implementation methods can be combined, and the functions of some units are implemented by the processing element calling the program, and the functions of some units are implemented by the integrated circuit.

[0271] It can be seen that the above apparatus for network equipment may include at least one processing element and an interface circuit, wherein at least one processing element is used to execute any one of the methods performed by the network equipment provided in the above method embodiments. The processing element may execute part or all of the steps performed by the network equipment in a first manner: that is, by calling a program stored in a storage element; or in a second manner: that is, by combining an integrated logic circuit of hardware in a processor element with instructions to execute part or all of the steps performed by the network equipment; of course, the first manner and the second manner may be combined to execute part or all of the steps performed by the above network equipment.

[0272] The processing element here is the same as described above and can be implemented by a processor. The function of the processing element can be Fig.10 The processing unit described in the above has the same function. Exemplarily, the processing element may be a general-purpose processor, such as a CPU, or one or more integrated circuits configured to implement the above method, such as one or more ASICs, or one or more microprocessors DSPs, or one or more FPGAs, etc., or a combination of at least two of these integrated circuit forms. The storage element may be implemented by a memory, and the function of the storage element may be the same as Fig.10 The storage element can be implemented by a memory, and the function of the storage element can be the same as that of the storage unit described in Fig.10 The storage element may be a memory or a collective name for multiple memories.

[0273] Fig.12 The network equipment shown can achieve Figure 6 or Figure 8 The illustrated method embodiment involves various processes of a network device. Fig.12 The operations and / or functions of each module in the network device shown are respectively for implementing the corresponding processes in the above method embodiments. For details, please refer to the description in the above method embodiments. To avoid repetition, the detailed description is appropriately omitted here.

[0274] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented in one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that include computer-usable program code.

[0275] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0276] These computer program instructions may also be stored in a computer readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0277] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0278] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A method for determining quality information of a cell, characterized in that: The method is applicable to a terminal device or a chip of the terminal device, and the method includes: Receiving first information from a first network device, where the first information is used to indicate that a first cell is associated with a first SSB and a second SSB, where frequency information of the first SSB is different from frequency information of the second SSB; receiving auxiliary parameters from the first network device, the auxiliary parameters comprising a preset threshold, a coefficient of the measurement value of the first SSB, and a coefficient of the measurement value of the second SSB; Determine quality information of the first cell according to the measurement value of the first SSB, the measurement value of the second SSB and the auxiliary parameter; Among them, if the measurement value of the first SSB and the measurement value of the second SSB are both greater than or equal to the preset threshold, the quality information of the first cell is determined based on the coefficient of the measurement value of the first SSB, the coefficient of the measurement value of the second SSB, the measurement value of the first SSB and the measurement value of the second SSB; or, if the measurement value of the first SSB or the measurement value of the second SSB is less than the preset threshold, the quality information of the first cell is determined based on the maximum measurement value of the measurement value of the first SSB and the measurement value of the second SSB.

2. The method according to claim 1, characterized in that The method further comprises: receiving second information from a second network device, the second information comprising a first offset and a second offset; Among them, the first offset is the frequency domain offset between the first CRB where the subcarrier with the smallest subcarrier number mapped to the first SSB is located and the frequency domain reference point, and the second offset is the frequency domain offset between the second CRB where the subcarrier with the smallest subcarrier number mapped to the second SSB is located and the frequency domain reference point.

3. The method according to claim 2, characterized in that The method further comprises: receiving third information from the second network device, the third information comprising a third offset and a fourth offset; Among them, the third offset is the frequency domain offset between the frequency domain lower boundary position of the first SSB and the frequency domain lower boundary position of the first CRB, and the fourth offset is the frequency domain offset between the frequency domain lower boundary position of the second SSB and the frequency domain lower boundary position of the second CRB.

4. The method according to claim 3, characterized in that The method further comprises: After determining that the first SSB is a service SSB, determining the frequency domain reference point according to the first offset and the third offset; or, After determining that the second SSB is the service SSB, the frequency domain reference point is determined according to the second offset and the fourth offset.

5. The method according to claim 1, characterized in that The first cell is a cell where the terminal device resides; or, the first cell is a neighboring cell of the cell where the terminal device resides.

6. The method according to claim 5, characterized in that The first information includes one or more association relationship identifiers and frequency information of the SSB corresponding to each of the association relationship identifiers; Among them, the frequency information of the first SSB and the frequency information of the second SSB correspond to the same association relationship identifier.

7. The method according to claim 5 or 6, characterized in that: The first information is carried in a system message from the first network device.

8. The method according to claim 1, characterized in that The first cell is a cell accessed by the terminal device; or, the first cell is a neighboring cell of the cell accessed by the terminal device.

9. The method according to claim 8, characterized in that The first information is carried in an RRC reconfiguration message or an RRC recovery message from the first network device.

10. The method according to claim 9, characterized in that The RRC reconfiguration message or the RRC recovery message further includes a measurement event identifier; The method further includes: if it is determined that the quality information of the first cell meets the reporting condition corresponding to the measurement event identifier, reporting the quality information of the first cell to the first network device.

11. The method according to claim 5 or 8, characterized in that: The first information includes frequency information of the first SSB associated with the first cell and frequency information of the second SSB associated with the first cell.

12. A method for determining quality information of a cell, characterized in that: The method is applicable to a network device or a chip of the network device, and the method comprises: Sending first information to a terminal device, where the first information is used to indicate that a first cell is associated with a first SSB and a second SSB, where frequency information of the first SSB is different from frequency information of the second SSB; Sending auxiliary parameters to the terminal device, where the auxiliary parameters include a preset threshold, a coefficient of the measurement value of the first SSB, and a coefficient of the measurement value of the second SSB; Among them, the first information and the auxiliary parameter are used to determine the quality information of the first cell; if the measurement value of the first SSB and the measurement value of the second SSB are both greater than or equal to the preset threshold, the quality information of the first cell is determined based on the coefficient of the measurement value of the first SSB, the coefficient of the measurement value of the second SSB, the measurement value of the first SSB and the measurement value of the second SSB; or, if the measurement value of the first SSB or the measurement value of the second SSB is less than the preset threshold, the quality information of the first cell is determined based on the maximum measurement value of the measurement value of the first SSB and the measurement value of the second SSB.

13. The method according to claim 12, characterized in that The method further comprises: Sending second information to the terminal device, where the second information includes a first offset and a second offset; Among them, the first offset is the frequency domain offset between the first CRB where the subcarrier with the smallest subcarrier number mapped to the first SSB is located and the frequency domain reference point, and the second offset is the frequency domain offset between the second CRB where the subcarrier with the smallest subcarrier number mapped to the second SSB is located and the frequency domain reference point.

14. The method according to claim 13, characterized in that The method further comprises: Sending third information to the terminal device, where the third information includes a third offset and a fourth offset; Among them, the third offset is the frequency domain offset between the frequency domain lower boundary position of the first SSB and the frequency domain lower boundary position of the first CRB, and the fourth offset is the frequency domain offset between the frequency domain lower boundary position of the second SSB and the frequency domain lower boundary position of the second CRB.

15. The method according to any one of claims 12 to 14, characterized in that The first information includes one or more association relationship identifiers and frequency information of the SSB corresponding to each of the association relationship identifiers; Among them, the frequency information of the first SSB and the frequency information of the second SSB correspond to the same association relationship identifier.

16. The method according to any one of claims 12 to 14, characterized in that The first information includes frequency information of the first SSB associated with the first cell and frequency information of the second SSB associated with the first cell.

17. A communication device, characterized in that: The method comprises means for performing the steps of the method according to any one of claims 1 to 11.

18. A communication device, characterized in that: Comprising means for performing the steps of the method as claimed in any one of claims 12 to 16.

19. A communication device, characterized in that: The device comprises at least one processor and an interface circuit, wherein the at least one processor is used to communicate with other devices through the interface circuit and execute the method according to any one of claims 1 to 11.

20. A communication device, characterized in that: The device comprises at least one processor and an interface circuit, wherein the at least one processor is used to communicate with other devices through the interface circuit and execute the method according to any one of claims 12 to 16.

21. A computer-readable storage medium, characterized in that: The method comprises a program, and when the program is executed by a processor, the method according to any one of claims 1 to 16 is executed.

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