Terminal device, base station device, and wireless communication system

Abstract

The present invention has: a reception unit that receives, from a base station device, a first signal or a second signal which includes first information relating to a measurement of the first signal and a third signal; a measurement unit that measures the first signal transmitted from the base station device or each of the first signal and third signal; a control unit that generates a measurement result for at least one of the first signal and the first signal and third signal in accordance with the first information; and a transmission unit that transmits the measurement result to the base station device.

Description

Terminal device, base station device, and wireless communication system

[0001] The present disclosure relates to a terminal device, a base station device, and a wireless communication system.

[0002] In the current network, traffic from mobile terminals (smartphones and feature phones) occupies most of the network resources and is expected to continue to grow in the future. Also, in addition to the traffic used by mobile terminals, for example, the deployment of IoT (Internet of Things) services (such as traffic systems, monitoring systems for smart meters or devices, etc.) is underway. Therefore, such a network is required to support services with diverse requirement conditions.

[0003] In order to support such diverse services, in the communication standards of the fifth-generation mobile communication (5G or NR (New Radio)) (for example, Non-Patent Documents 1 to 14), for example, standards assuming support for many use cases classified into eMBB (Enhanced Mobile BroadBand), Massive MTC (Machine Type Communications), and URLLC (Ultra-Reliable and Low Latency Communications) have been formulated.

[0004] And in the Third Generation Partnership Project (3GPP: 3rd Generation Partnership Project (registered trademark)), which is an international standardization project, even currently, the extended technologies of the above communication standards are continuously being studied and standardized.

[0005] For example, a 3GPP working group is considering the transmission of on-demand SSB (SS / PBCH Block) from base station equipment to terminal equipment with the aim of reducing power consumption in the network. On-demand SSB is a technology that transmits SSB only when necessary, rather than constantly. For example, base station equipment may not transmit SSB in order to reduce power consumption. Then, base station equipment transmits SSB when SSB measurement is required or when activating as an S-cell. For example, the timing and transmission cycle of on-demand SSB from base station equipment to terminal equipment can be adjusted.

[0006] 3GPP TS 37.324 V18.0.03GPP TS 37.340 V18.3.03GPP TS 38.201 V18.0.03GPP TS 38.202 V18.4.03GPP TS 38.211 V18.4.03GPP TS 38.212 V18.4.03GPP TS 38.213 V18.4.03GPP TS 38.214 V18.4.03GPP TS 38.215 V18.4.03GPP TS 38.300 V18.3.03GPP TS 38.321 V18.3.03GPP TS 38.322 V18.1.03GPP TS 38.323 V18.3.03GPP TS 38.331 V18.3.0RP-242354

[0007] However, the method for submitting Channel State Information (CSI) reports (hereinafter also referred to as CSI reports based on on-demand SSB) that include measurement results for on-demand SSB has not yet been determined.

[0008] Therefore, the Disclosure provides a terminal device, a base station device, and a wireless communication system that enable the transmission of CSI reports based on on-demand SSB.

[0009] The system includes: a receiving unit that receives a second signal from a base station device that includes first information relating to the measurement of a first signal or the first signal and the third signal; a measuring unit that measures each of the first signal or the first signal and the third signal transmitted from the base station device; a control unit that generates a measurement result for at least one of the first signal or the first signal and the third signal according to the first information; and a transmitting unit that transmits the measurement result to the base station device.

[0010] One disclosure will enable the submission of CSI reports based on on-demand SSB.

[0011] Figure 1 shows an example configuration of the wireless communication system 10. Figure 2 shows an example configuration of the terminal device 100. Figure 3 shows an example configuration of the base station device 200. Figure 4 shows an example sequence in the first embodiment. Figure 5 shows a specific example in the first embodiment. Figure 6 shows a specific example in the first embodiment. Figure 7 shows a specific example in the first embodiment. Figure 8 shows a specific example in the first embodiment. Figure 9 shows a specific example in the first embodiment. Figure 10 shows a specific example in the first embodiment. Figure 11 shows a specific example in the first embodiment. Figure 12 shows a specific example in the first embodiment. Figure 13 shows a specific example in the first embodiment. Figure 14 shows an example of the contents of the specification. Figure 15 shows an example of the contents of the specification. Figure 16 shows an example of the contents of the specification.

[0012] Embodiments of this disclosure will be described below with reference to the drawings. However, this description should not be interpreted as limiting, and will not limit the subject matter described in the claims. Furthermore, various changes, substitutions, and modifications can be made without departing from the spirit and scope of this disclosure. Different embodiments can also be combined as appropriate.

[0013] [First Embodiment] (Regarding the Wireless Communication System 10) Figure 1 is a diagram showing an example of the configuration of the wireless communication system 10. The wireless communication system 10 includes, for example, a terminal device 100 and a base station device 200. The following description will be based on the case where the wireless communication system 10 has one base station device 200, but the wireless communication system 10 may have, for example, multiple base station devices 200.

[0014] The terminal device 100 is a communication device that wirelessly connects to the base station device 200 and transmits and receives data, and is, for example, a smartphone or a tablet terminal.

[0015] The base station device 200 is a device that wirelessly connects with the terminal device 100 and transmits and receives data, and is, for example, an eNodeB or a gNodeB. The base station device 200 supports various communication generations (for example, 4G, 5G, or Beyond 5G). The base station device 200 may consist of a single unit or multiple units such as a CU (Central Unit) or a DU (Distributed Unit).

[0016] (Example of configuration of terminal device 100) Figure 2 shows an example of the configuration of terminal device 100. Terminal device 100 has a CPU (Central Processing Unit) 110, storage 120, memory 130 and wireless communication circuit 150.

[0017] Storage 120 is an auxiliary storage device that stores programs and data, and is a flash memory, HDD (Hard Disk Drive), or SSD (Solid State Drive), etc. Storage 120 stores the terminal communication program 121 and the terminal information generation program 122.

[0018] Memory 130 is the area where programs stored in storage 120 are loaded. Memory 130 may also be used as an area where programs store data.

[0019] The wireless communication circuit 150 is a circuit that communicates wirelessly with the base station device 200. The wireless communication circuit 150 has an antenna 151. The antenna 151 includes, for example, a directional antenna that can control the direction of transmission and reception of radio waves. For example, in response to information on CSI measurement transmitted from the base station device 200 (hereinafter also referred to as first information), the SSB transmitted from the base station device 200 is measured and the direction of radio wave reception is controlled to an appropriate direction. The wireless communication circuit 150 can also change the transmission power.

[0020] The CPU 110 is a processor that builds each part and then performs each process by loading programs stored in the storage 120 into the memory 130 and executing them.

[0021] The CPU 110 constructs the receiving and transmitting units by executing the terminal communication program 121 and performs terminal communication processing. Terminal communication processing is the process of establishing a wireless connection with the base station device 200 and performing wireless communication. Specifically, in terminal communication processing, the terminal device 100 establishes a wireless connection with the base station device 200, transmits data to the base station device 200, and receives data from the base station device 200.

[0022] The CPU 110 constructs the measurement unit and control unit and performs terminal information generation processing by executing the terminal information generation program 122. The terminal information generation processing is the process of generating a CSI report in accordance with the information (first information) regarding the measurement of the CSI transmitted from the base station device 200. Specifically, in the terminal information generation processing, the terminal device 100 generates a CSI report that includes, for example, SSBRI (SS / PBCH Block Resource indicator), as well as at least one of L1-RSRP (layer-1 Reference Signal Received Power) and L1-SINR (layer-1 Signal to Interference & Noise Ratio).

[0023] (Example of the configuration of the base station device 200) Figure 3 shows an example of the configuration of the base station device 200. The base station device 200 has a CPU 210, storage 220, memory 230 and wireless communication circuit 250.

[0024] Storage 220 is an auxiliary storage device that stores programs and data, and is a flash memory, HDD, or SSD, etc. Storage 220 stores the base station communication program 221 and the base station information generation program 222.

[0025] Memory 230 is the area where programs stored in storage 220 are loaded. Memory 230 may also be used as an area where programs store data.

[0026] The wireless communication circuit 250 is a device that communicates wirelessly with the terminal device 100. The wireless communication circuit 250 has an antenna 251. The antenna 251 includes, for example, a directional antenna that can control the direction of transmission and reception of radio waves.

[0027] The CPU 210 is a processor that builds each part and then performs each process by loading programs stored in the storage 220 into the memory 230 and executing them.

[0028] The CPU 210 constructs the receiving and transmitting units and performs base station communication processing by executing the base station communication program 221. Base station communication processing is the process of wirelessly communicating with the terminal device 100. Specifically, in base station communication processing, the base station device 200 establishes a wireless connection with the terminal device 100, transmits data to the terminal device 100, and receives data from the terminal device 100.

[0029] The CPU 210 constructs a control unit and performs base station information generation processing by executing the base station information generation program 222. The base station information generation processing is the process of generating the first information.

[0030] [First Embodiment] Next, the first embodiment will be described. Figure 4 is a diagram showing an example of a sequence in the first embodiment. Figures 5 to 13 are diagrams showing specific examples in the first embodiment.

[0031] As shown in Figure 4, the base station device 200 generates first information by, for example, performing base station information generation processing (S10). The first information is, for example, information that includes first correspondence information. The first information is also, for example, information that includes at least one of the second correspondence information and the third correspondence information. The following describes each piece of information included in the first information.

[0032] (Regarding the first correspondence information) First, the first correspondence information will be explained. The first correspondence information includes, for example, information that associates an on-demand SSB with an on-demand SSB resource team. The on-demand SSB is, for example, an SSB transmitted from the base station device 200 to the terminal device 100, and its transmission can be flexibly started and stopped, and its period adjusted, by RRC, MAC-CE, or DCI. It can also terminate transmission based on conditions, for example. The conditions are, for example, when an S-cell deactivation command is received, when the S-cell deactivation timer expires, or when the transition from an inactive state to an active state is completed. An on-demand SSB resource team is, for example, one or more resources used when sending on-demand SSB.

[0033] Furthermore, the first correspondence information may further include, for example, information that associates always-on SSB with always-on SSB resource team. always-on SSB is, for example, an SSB that is continuously and periodically transmitted from base station equipment 200 to terminal equipment 100. always-on SSB resource team is, for example, one or more resources used when transmitting always-on SSB. Hereinafter, on-demand SSB will be referred to as the first signal, and always-on SSB as the third signal.

[0034] Specifically, as shown in Figure 5, the base station device 200 may, for example, divide the "SSB resource set list" into a "Resource Set List for always-on SSB" used as an always-on SSB resource team and a "Resource Set List for on-demand SSB" used as an on-demand SSB resource team. The base station device 200 may generate, for example, information associating always-on SSB with "Resource Set List for always-on SSB" and information associating on-demand SSB with "Resource Set List for on-demand SSB" as first correspondence information. Here, "SSB resource set list" may also be called "csi-SSB-ResourceSetList".

[0035] Furthermore, as shown in Figure 5, the base station device 200 may, for example, divide the "SSB resource set" into a "Resource Set for always-on SSB" used as an always-on SSB resource team and a "Resource Set for on-demand SSB" used as an on-demand SSB resource team. The base station device 200 may generate, for example, information associating always-on SSB with "Resource Set for always-on SSB" and information associating on-demand SSB with "Resource Set for on-demand SSB" as first correspondence information. Here, "SSB resource set" may also be called "csi-SSB-ResourceSet".

[0036] Furthermore, as shown in Figure 5, the base station device 200 may, for example, divide the "SSB resource list" into a "Resource list for always-on SSB" used as an always-on SSB resource team and a "Resource list for on-demand SSB" used as an on-demand SSB resource team. The base station device 200 may generate, for example, information associating always-on SSB with "Resource list for always-on SSB" and information associating on-demand SSB with "Resource list for on-demand SSB" as first correspondence information. Here, "SSB resource list" may also be called "csi-SSB-ResourceList".

[0037] Furthermore, as shown in Figure 5, the base station device 200 may, for example, divide the "SSB index" into "SSB index for always-on SSB" used as an always-on SSB resource team and "SSB index for on-demand SSB" used as an on-demand SSB resource team. The base station device 200 may generate, for example, information associating always-on SSB with "SSB index for always-on SSB" and information associating on-demand SSB with "SSB index for on-demand SSB" as first correspondence information.

[0038] The first correspondence information may include, for example, information that associates always-on SSB with always-on SSB resource teams, or, instead of information that associates always-on SSB with always-on SSB resource teams, information that associates each on-demand SSB with each on-demand SSB resource team for each of several different types of on-demand SSB. The several different types of on-demand SSB are, for example, on-demand SSBs in which at least one of the following differs from each other: the time-related position such as the period or position within a single frame, the beam used for transmission, the power used for transmission, and the frequency used for transmission.

[0039] (Regarding the second correspondence information) Next, we will explain the second correspondence information. The second correspondence information includes, for example, information that associates the on-demand SSB resource team with the CSI report configuration. The CSI report configuration is, for example, information regarding the measurement results for the measurement signal (on-demand SSB or always-on SSB), and includes information that shows the correspondence with the measurement signal, the content of the measurement results for the measurement signal (e.g., SSBRI, L1-RSRP, etc.), and information that includes the transmission resources for the measurement results for the measurement signal.

[0040] Furthermore, the second correspondence information may include, for example, information that associates the on-demand SSB resource team with the always-on SSB resource team with the CSI report configuration.

[0041] Specifically, the base station device 200 may, for example, associate an on-demand SSB resource team and an always-on SSB resource team with a single CSI report configuration.

[0042] Further, the base station apparatus 200 may, for example, associate each of an on-demand SSB resource team and an always-on SSB resource team with a different CSI report configuration.

[0043] More specifically, as shown in FIG. 6(A), the base station apparatus 200 may, for example, directly associate each of an always-on SSB resource team and an on-demand SSB resource team with one CSI report configuration.

[0044] Further, as shown in FIG. 6(B), the base station apparatus 200 may, for example, set a plurality of CSI sub-report configurations (for example, CSI sub-report configuration #0 and CSI sub-report configuration #1) in the CSI report configuration, associate the always-on SSB resource team with the CSI sub-report configuration #0, and associate the on-demand SSB resource team with the CSI sub-report configuration #1.

[0045] Further, as shown in FIG. 7(A), the base station apparatus 200 may, for example, set one CSI sub-report configuration in the CSI report configuration, directly associate the always-on SSB resource team with the CSI report configuration, and associate the on-demand SSB resource team with the CSI sub-report configuration.

[0046] Also, as shown in FIG. 7(B), the base station apparatus 200 may, for example, associate an always-on SSB resource team with CSI report configuration #0 and an on-demand SSB resource team with CSI report configuration #1.

[0047] Note that the second correspondence information may include information associating a plurality of different types of on-demand SSB resource teams, an always-on SSB resource team, and a CSI report configuration.

[0048] Also, the second correspondence information may, for example, associate a plurality of different types of on-demand SSB resource teams with a CSI report configuration.

[0049] (Regarding the third correspondence information) Next, the third correspondence information will be described. The third correspondence information includes, for example, information associating an on-demand SSB resource team with a CSI-RS (Reference Signal) resource team or a CSI-IM (Interference Measurement) resource team. Each of CSI-RS and CSI-IM is a signal (hereinafter also referred to as a fourth signal) used for interference measurement to generate measurement results such as SSBRI and L1-SINR in response to measurements of on-demand SSB or always-on SSB. Also, a CSI-RS / CSI-IM resource team is, for example, one or more resources used when transmitting CSI-RS or CSI-IM.

[0050] Also, the third correspondence information may include information associating an on-demand SSB resource team, an always-on SSB resource team, and a CSI-RS / CSI-IM resource team.

[0051] Specifically, the base station device 200 may, for example, associate each of the on-demand SSB resource team and the always-on SSB resource team with a single CSI-RS / CSI-IM resource team. Furthermore, this CSI-RS / CSI-IM resource team is associated with the CSI report configuration that is associated with the on-demand SSB resource team and the always-on SSB resource team.

[0052] Furthermore, the base station device 200 may, for example, associate the on-demand SSB resource team and the always-on SSB resource team with different CSI-RS / CSI-IM resource teams.

[0053] More specifically, the base station device 200 may, as shown in Figures 8(A), 8(B), 9(A), and 9(B), associate each of the always-on SSB resource team and the on-demand SSB resource team described in Figures 6(A), 6(B), 7(A), and 8(B) with a single CSI-RS / CSI-IM resource team. Furthermore, these two CSI-RS / CSI-IM resource teams, which are associated with the always-on SSB resource team and the on-demand SSB resource team respectively, may be associated with a single CSI report configuration that is associated with both the on-demand SSB resource team and the always-on SSB resource team, or they may be individually associated with the CSI report configurations that are associated with each of the on-demand SSB resource team and the always-on SSB resource team.

[0054] Furthermore, as shown in Figures 10(A), 10(B), 11(A), and 11(B), the base station device 200 may associate the always-on SSB resource team and the on-demand SSB resource team, as described in Figures 6(A), 6(B), 7(A), and 8(B), with different CSI-RS / CSI-IM resource teams.

[0055] Furthermore, the third correspondence information may, for example, associate multiple different types of on-demand SSB resource teams with always-on SSB resource teams and CSI-RS / CSI-IM resource teams.

[0056] Furthermore, the third correspondence information may, for example, associate multiple different types of on-demand SSB resource teams with CSI-RS / CSI-IM resource teams.

[0057] Returning to Figure 4, the base station device 200 transmits a signal containing the first information generated in S10 (hereinafter also referred to as the second signal) to the terminal device 100 (S20). The terminal device 100 then receives the second signal (first information) transmitted from the base station device 200.

[0058] Specifically, the base station device 200 transmits a second signal to the terminal device 100, which includes, for example, the first information generated in S10, a CSI resource configuration and a CSI report configuration. The CSI resource configuration is, for example, information about the measurement signal (on-demand SSB, always-on SSB, CSI-RS, or CSI-IM), and information about the transmission power of the measurement signal and the transmission resources of the measurement signal. The CSI report configuration contains information about the measurement results, including the content of the measurement results (e.g., SSBRI, L1-RSRP, L1-SINR, etc.), transmission resources for sending the measurement results from the terminal device 100 to the base station device 200, and information about the correspondence between the CSI resource configuration and the CSI report configuration.

[0059] Subsequently, the base station device 200 transmits, for example, always-on SSB (S30). Then, the terminal device 100 measures (receives), for example, the always-on SSB transmitted from the base station device 200.

[0060] Specifically, the base station device 200 transmits always-on SSB according to, for example, the Serving cell configuration. The base station device 200 may, for example, repeatedly transmit always-on SSB. The terminal device 100 receives and measures always-on SSB according to, for example, the CSI resource configuration and CSI report configuration included in the second signal transmitted from the base station device 200.

[0061] Furthermore, the base station device 200 transmits, for example, on-demand SSB (S40). The terminal device 100 then measures (receives), for example, the on-demand SSB transmitted from the base station device 200.

[0062] Specifically, the base station device 200 transmits on-demand SSB according to, for example, the Serving cell configuration and the on-demand SSB transmission instruction. The base station device 200 may, for example, repeatedly transmit on-demand SSB. The terminal device 100 receives and measures on-demand SSB according to, for example, the on-demand SSB transmission instruction transmitted from the base station device 200 and the CSI resource configuration and CSI report configuration included in the second signal. The on-demand SSB transmission instruction is, for example, RRC, MAC-CE, or DCI. The on-demand SSB transmission instruction may, for example, be included in a second signal.

[0063] Furthermore, the base station device 200 transmits CSI-RS / CSI-IM to the terminal device 100, for example (S50). The terminal device 100 then measures (receives) the CSI-RS / CSI-IM transmitted from the base station device 200.

[0064] Specifically, the base station device 200 transmits CSI-RS / CSI-IM according to the CSI resource configuration and CSI-RS / CSI-IM transmission instructions included in the second signal transmitted to the terminal device 100 in S20. The base station device 200 may, for example, repeatedly transmit CSI-RS / CSI-IM. The CSI-RS / CSI-IM transmission instruction may be, for example, RRC, MAC-CE, or DCI. The CSI-RS / CSI-IM transmission instruction may also be, for example, CSI resource configuration.

[0065] The terminal device 100 then measures, for example, the L1-RSRP for always-on SSB transmitted from the base station device 200. The terminal device 100 also measures, for example, the L1-RSRP for on-demand SSB transmitted from the base station device 200. The terminal device 100 also measures, for example, the L1-SINR for always-on SSB and CSI-RS / CSI-IM transmitted from the base station device 200. The terminal device 100 also measures, for example, the L1-SINR for on-demand SSB and CSI-RS / CSI-IM transmitted from the base station device 200.

[0066] Subsequently, the terminal device 100 generates a CSI report in accordance with the first information received in S20 by, for example, performing terminal information generation processing (S60).

[0067] Specifically, as shown in Figures 6(A), 6(B), and 7(A), if, for example, the always-on SSB resource team and the on-demand SSB resource team are each associated with one CSI report configuration, the terminal device 100 generates one CSI report for the always-on SSB resource team and the on-demand SSB resource team in S60. A specific example of S60 will be described below.

[0068] (Specific Example of S60) Figures 12 and 13 illustrate a specific example of S60. Figure 12 illustrates the case where the number of resources included in the always-on SSB resource team, the number of resources included in the on-demand SSB resource team, and the number of resources included in the CSI-RS / CSI-IM resource team are all the same. Furthermore, Figure 13 illustrates the case where the number of resources included in the always-on SSB resource team differs from the number of resources included in the on-demand SSB resource team and the number of resources included in the CSI-RS / CSI-IM resource team. In other words, Figure 13 illustrates the case where the on-demand SSB resource team is a subset of the always-on SSB resource team.

[0069] Specifically, in the example shown in Figure 12, for example, the "1st SSB resource" whose resource order in the always-on SSB resource team is "1" and the "1st SSB resource" whose resource order in the on-demand SSB resource team is "1" are identical in one or more of the following: the beam used for transmission (Beam #1), the power used for transmission, and the frequency used for transmission. Furthermore, the "1st CSI-RS / CSI-IM resource," which has resource order "1" in the CSI-RS / CSI-IM resource team, the "1st SSB resource," which has resource order "1" in the always-on SSB resource team, and the "1st SSB resource," which has resource order "1" in the on-demand SSB resource team, all use the same beam (Beam #1) for transmission. The resources that follow each resource team are also handled according to this method. Therefore, in this case, the terminal device 100 includes in the CSI report either the L1-RSRP or L1-SINR corresponding to the (n+1)th resource whose resource order in the always-on SSB resource team is "n+1", or the L1-RSRP or L1-SINR corresponding to the (n+1)th resource whose resource order in the on-demand SSB resource team is "n+1". In this case, for example, the terminal device 100 includes the SSBRI "n" (where n is an integer greater than 0) in the CSI report. This SSBRI "n" corresponds to the (n+1)th entry (i.e., the (n+1)th always-on SSB resource team or on-demand SSB resource team) that has been configured.Furthermore, this SSBRI "n" corresponds to the (n+1)th entry of the always-on SSB resource team or on-demand SSB resource team for channel measurements (i.e., the (n+1)th always-on SSB resource or on-demand SSB resource), and the (n+1)th entry of the CSI-RS resource team or CSI-IM resource team for interference measurements (i.e., the (n+1)th CSI-RS resource or CSI-IM resource).

[0070] Furthermore, resources that use the same beam, power, and frequency for transmission (for example, the "1st SSB resource" included in the always-on SSB resource team, and the "1st SSB resource" included in the on-demand SSB resource team) will also be referred to as resources with the same characteristics.

[0071] More specifically, in the example shown in Figure 12, for example, the on-demand SSB resource team includes "1st SSB resource" as the resource with resource order "1", "2nd SSB resource" as the resource with resource order "2", and "3rd SSB resource" as the resource with resource order "3". Therefore, in the example shown in Figure 12, when the terminal device 100 decides to transmit the measurement results corresponding to the on-demand SSB resource team, the SSBRI is "1", indicating the resource order of the "1st SSB resource" in the on-demand SSB resource team, and L1-RSRP or L1-SINR is a set (hereinafter also referred to as the first set) which is the measurement result for the "1st SSB resource" included in the on-demand SSB resource team, and the SSBRI is "1", indicating the resource order of the "1st SSB resource" in the on-demand SSB resource team. A CSI report is generated that includes "2" indicating the resource order of "resource", where L1-RSRP or L1-SINR is the measurement result for the "2nd SSB resource" included in the on-demand SSB resource team (hereinafter also referred to as the second set), and "3" indicating the resource order of the "3rd SSB resource" in the on-demand SSB resource team, where L1-RSRP or L1-SINR is the measurement result for the "3rd SSB resource" included in the on-demand SSB resource team (hereinafter also referred to as the third set). If terminal device 100 decides to transmit measurement results corresponding to the on-demand SSB resource team, then, for example, the SSB received immediately before the CSI report generation timing (execution timing of S60 in Figure 4) is the on-demand SSB.

[0072] The terminal device 100 may, for example, generate a CSI report that includes some of the sets from the first set, second set, and third set, in descending order of the measured values.

[0073] Furthermore, in the example shown in Figure 12, for example, if terminal device 100 decides to transmit measurement results corresponding to the on-demand SSB resource team, SSBRI is "1", indicating the resource order of "1st SSB resource" in the always-on SSB resource team, and L1-RSRP or L1-SINR is a set (hereinafter also referred to as the fourth set) which is the measurement result for "1st SSB resource" included in the always-on SSB resource team, and SSBRI is "2nd SSB A CSI report is generated that includes "2" indicating the resource order of "resource", where L1-RSRP or L1-SINR is the measurement result for the "2nd SSB resource" included in the always-on SSB resource team (hereinafter also referred to as the fifth set), and "3" indicating the resource order of the "3rd SSB resource" in the always-on SSB resource team, where L1-RSRP or L1-SINR is the measurement result for the "3rd SSB resource" included in the always-on SSB resource team (hereinafter also referred to as the sixth set).

[0074] The terminal device 100 may, for example, generate a CSI report that includes some of the sets from the fourth set, fifth set, and sixth set, in descending order of the measured values.

[0075] On the other hand, as shown in Figure 13, if, for example, the number of resources included in the always-on SSB resource team is different from the number of resources included in the on-demand SSB resource team, the terminal device 100 may determine the SSBRI according to the resource order of the one with the larger number of resources between the always-on SSB resource team and the on-demand SSB resource team. Hereinafter, this will also be referred to as the first SSBRI determination method.

[0076] Specifically, in the example shown in Figure 13, for instance, the on-demand SSB resource team contains 3 resources, and the always-on SSB resource team contains 2 resources. In this case, the CSI-RS / CSI-IM resource team has the same number of resources as the one with the larger number of resources between the always-on SSB resource team and the on-demand SSB resource team, resulting in a total of 3 resources. Furthermore, in the example shown in Figure 13, a resource with resource order "1" in the on-demand SSB resource team corresponds to a resource with resource order "2" in the always-on SSB resource team. In other words, one or more of the following are the same: the beam used for transmission, the power used for transmission, and the frequency used for transmission. Also, in the example shown in Figure 13, the resource with resource order "2" in the on-demand SSB resource team corresponds to the resource with resource order "3" in the always-on SSB resource team. Also, in the example shown in Figure 13, the resources with resource order "1", "2", and "3" in the always-on SSB resource team correspond to the resources with resource order "1", "2", and "3" in the CSI-RS / CSI-IM resource team. In other words, the beam used for transmission is the same.

[0077] Therefore, in the example shown in Figure 13, the terminal device 100 includes in the CSI report either the L1-RSRP or L1-SINR corresponding to the (n+1)th resource whose resource order in the always-on SSB resource team is "n+1", or the L1-RSRP or L1-SINR corresponding to the (k+1)th resource whose resource order in the on-demand SSB resource team is "k+1". The (n+1)th resource whose resource order in the always-on SSB resource team is "n+1" corresponds to the (k+1)th resource whose resource order in the on-demand SSB resource team is "k+1". In other words, one or more of the beam used for transmission, the power used for transmission, and the frequency used for transmission are the same. In this case, for example, terminal device 100 includes SSBRI "n" (where n is an integer greater than 0) in the CSI report. This SSBRI "n" corresponds to the (n+1)th entry (i.e., the (n+1)th always-on SSB resource) of the always-on SSB resource team or the (k+1)th entry (i.e., the (k+1)th on-demand SSB resource) of the on-demand SSB resource team. Furthermore, this SSBRI "n" corresponds to the (n+1)th entry of the always-on SSB resource team for channel measurements (i.e., the (n+1)th always-on SSB resource) or the (k+1)th entry of the on-demand SSB resource team (i.e., the (k+1)th on-demand SSB resource), and the (n+1)th entry of the CSI-RS resource team or CSI-IM resource team for interference measurements (i.e., the (n+1)th CSI-RS resource or CSI-IM resource).

[0078] Terminal device 100 has a set of resources where SSBRI is "2", indicating the resource order of the "2nd SSB resource" in the always-on SSB resource team which has the same characteristics as the "1st SSB resource" in the on-demand SSB resource team, and L1-RSRP or L1-SINR is the measurement result for the "1st SSB resource" included in the on-demand SSB resource team, and SSBRI is the always-on SSB resource which has the same characteristics as the "2nd SSB resource" in the on-demand SSB resource team. The CSI report may include a set of measurement results for the "2nd SSB resource" included in the on-demand SSB resource team, where "3" indicates the resource order of the "3rd SSB resource" in the team, and L1-RSRP or L1-SINR is included in the on-demand SSB resource team.

[0079] Furthermore, as shown in Figure 13, if, for example, the number of resources included in the always-on SSB resource team differs from the number of resources included in the on-demand SSB resource team, the terminal device 100 may determine the SSBRI according to the order in the resource team corresponding to the SSB received immediately before the CSI report generation timing (execution timing of S60 in Figure 4). Hereinafter, this will also be referred to as the second SSBRI determination method.

[0080] Specifically, in the example shown in Figure 13, for example, if the SSB received immediately before the CSI report generation timing (execution timing of S60 in Figure 4) is an on-demand SSB, the terminal device 100 will have a set where SSBRI is "1", indicating the resource order of the "1st SSB resource" in the on-demand SSB resource team, and L1-RSRP or L1-SINR is the measurement result for the "1st SSB resource" included in the on-demand SSB resource team, and SSBRI is the "2nd SSB" in the on-demand SSB resource team. The CSI report may include a set of measurement results for the "2nd SSB resource" included in the on-demand SSB resource team, where L1-RSRP or L1-SINR indicates the resource order of "resource". More specifically, for example, in this case, the terminal device 100 includes in the CSI report either L1-RSRP or L1-SINR corresponding to the (k+1)th resource whose resource order in the on-demand SSB resource team is "k+1". In this case, for example, the terminal device 100 includes in the CSI report the SSBRI "k" (where k is an integer greater than 0). This SSBRI "k" corresponds to the (k+1)th entry (i.e., the (k+1)th on-demand SSB resource) of the on-demand SSB resource team. Furthermore, this SSBRI "k" corresponds to the (k+1)th entry (i.e., the (k+1)th on-demand SSB resource) of the on-demand SSB resource team for channel measurements, and the (n+1)th entry (i.e., the (n+1)th CSI-RS resource or CSI-IM resource) of the CSI-RS resource team or CSI-IM resource team for interference measurements.In this on-demand SSB resource team, the (k+1)th resource, whose resource order is "k+1", corresponds in characteristics to the (n+1)th entry (i.e., the (n+1)th CSI-RS resource or CSI-IM resource) of the CSI-RS resource team or CSI-IM resource team. That is, the beam used for transmission is the same.

[0081] The base station device 200 may, for example, specify the first SSBRI determination method or the second SSBRI determination method used in S60 below.

[0082] Returning to Figure 4, as in the cases of Figures 6(B) and 7(A), for example, if CSI sub-report configuration is set in CSI Report configuration, terminal device 100 may generate CSI reports for both always-on SSB resource team and on-demand SSB resource team in S60.

[0083] Specifically, in this case, the base station device 200 may instruct the terminal device 100 on whether to include the measurement results corresponding to the always-on SSB resource team or the measurement results corresponding to the on-demand SSB resource team in the CSI report. Furthermore, if the on-demand SSB reporting parameter is set in the CSI report configuration, in other words, if the base station device 200 specifies the measurement results corresponding to the on-demand SSB resource team, the terminal device 100 may generate a CSI report that includes the measurement results corresponding to the on-demand SSB resource team.

[0084] On the other hand, as in the case of Figure 7(B), for example, if the always-on SSB resource team and the on-demand SSB resource team are each associated with different CSI report configurations, the terminal device 100 may generate different CSI reports (two CSI reports) for the always-on SSB resource team and the on-demand SSB resource team, respectively.

[0085] Then, the base station device 200 may instruct the terminal device 100 to report each CSI report simultaneously (i.e., in a single reporting instance) or separately (i.e., in two different reporting instances). Subsequently, for example, if the team reporting parameter is set in the CSI report configuration, in other words, if the base station device 200 instructs the terminal device 100 to report each CSI report simultaneously, the terminal device 100 may report the measurement results corresponding to the always-on SSB resource team and the measurement results corresponding to the on-demand SSB resource team in a single reporting instance.

[0086] Returning to Figure 4, the terminal device 100 transmits (reports) the CSI report generated in S60 to the base station device 200 (S70).

[0087] Specifically, the terminal device 100 transmits a CSI report according to the CSI report configuration included in the second signal received from the base station device 200 in S20, for example.

[0088] As a result, the wireless communication system 10 in this embodiment can, for example, transmit CSI reports based on on-demand SSB.

[0089] Specifically, in this embodiment, the terminal device 100 can generate and transmit a CSI report to the base station device 200 even when, for example, always-on SSB resource team and on-demand SSB resource team are transmitted from the base station device 200, or when multiple different types of on-demand SSB resource teams are transmitted from the base station device 200.

[0090] Furthermore, the method for associating the on-demand SSB resource team, the always-on SSB resource team, and the CSI report configuration may be determined, for example, by the type of signaling.

[0091] Specifically, for example, when on-demand SSB transmission is initiated, terminated, or adjusted by an RRC (Radio Resource Control) Configuration, the base station equipment 200 may associate each of the on-demand SSB resource team and the always-on SSB resource team with a single CSI report configuration, as described in Figures 6(A), 6(B), and 7(A).

[0092] Furthermore, for example, if on-demand SSB transmission is initiated, terminated, or adjusted by MAC-CE (Medium Access Control-Control Element), DCI (Downlink Control Information), or other conditions, the base station equipment 200 may associate the on-demand SSB resource team and the always-on SSB resource team with different CSI report configurations, as described in Figure 7(B).

[0093] [First Modification] Next, a first modification of the first embodiment (hereinafter also simply referred to as the first modification) will be described.

[0094] For example, if the CSI report configuration included in the first information transmitted from the base station device 200 indicates that SSBRI, L1-RSRP, and L1-SINR should be included in the CSI report, the terminal device 100 may occupy a CSI processing unit from the first symbol of the earliest resource corresponding to the received SSB to the last symbol of the PUSCH (Physical Uplink Shared Channel) or PUCCH (Physical Uplink Control Channel) that transmits and receives the CSI report containing the measurement results for the received SSB. The CSI processing unit is, for example, a processing resource available for generating CSI measurement results.

[0095] Specifically, when on-demand SSB is being transmitted from the base station device 200 (but always-on SSB is not being transmitted from the base station device 200), the terminal device 100 may occupy the CSI processing unit, for example, from the first symbol of the earliest resource corresponding to the transmitted on-demand SSB to the last symbol of the PUSCH or PUCCH that sends and receives a CSI report containing measurement results for the transmitted on-demand SSB.

[0096] Furthermore, when both on-demand SSB and always-on SSB are being transmitted from the base station device 200, the terminal device 100 may occupy a CSI processing unit, for example, from the first symbol of the earliest resource corresponding to the received SSB (the on-demand SSB or always-on SSB that has been initiated) to the last symbol of the PUSCH or PUCCH that sends and receives a CSI report containing measurement results for the received SSB.

[0097] [Second Modification] Next, a second modification of the first embodiment (hereinafter also simply referred to as the second modification) will be described.

[0098] For example, if the CSI report configuration included in the first information transmitted from the base station device 200 indicates that SSBRI, L1-RSRP, and L1-SINR should not be included in the CSI report, in other words, if the CSI report configuration included in the first information transmitted from the base station device 200 indicates that a CSI report should not be transmitted (report quantity is set to "none"), then when the terminal device 100 receives an SSB transmitted from the base station device 200, it may occupy the CSI processing unit from the first symbol of the earliest resource corresponding to the received SSB until a predetermined number of symbols after the last symbol of the latest resource.

[0099] Specifically, when on-demand SSB is being transmitted from the base station device 200 (and always-on SSB is not being transmitted from the base station device 200), the terminal device 100 may occupy the CPU for a predetermined number of symbols after the first symbol of the earliest resource corresponding to the on-demand SSB that has been started to be transmitted, up to the last symbol of the latest resource.

[0100] Furthermore, when both on-demand SSB and always-on SSB are being transmitted from the base station device 200, the terminal device 100 may occupy the CPU for a predetermined number of symbols after the last symbol of the slowest resource, starting from the first symbol of the earliest resource corresponding to the received SSB (the on-demand SSB or always-on SSB that has been started to be transmitted).

[0101] [Third Modification] Next, a third modification of the first embodiment (hereinafter also simply referred to as the third modification) will be described.

[0102] The terminal device 100 may, for example, determine that if on-demand SSB is being transmitted from the base station device 200 (and always-on SSB is not being transmitted from the base station device 200), it is a single resource case if there is only one resource included in the on-demand SSB resource team corresponding to the CSI report configuration, and it is a multiple resource case if there are multiple resources included in the on-demand SSB resource team corresponding to the CSI report configuration.

[0103] Furthermore, the terminal device 100 may, for example, determine that if on-demand SSB and always-on SSB are being transmitted from the base station device 200, and there is only one resource included in the on-demand SSB resource team and always-on SSB resource team corresponding to the CSI report configuration, it will be determined to be a single resource case, and if there are multiple resources included in the on-demand SSB resource team and always-on SSB resource team corresponding to the CSI report configuration, it will be determined to be a multiple resource case.

[0104] The terminal device 100 may calculate a CSI reference time (CSI reference resource in time domain) depending on the determination result for, for example, a single resource case or a case of multiple resources. The CSI reference time is, for example, the time required to generate the CSI report.

[0105] Specifically, if the terminal device 100 determines, for example, that it is a single resource case, it calculates the CSI reference time according to the following formula (1) so that the timing corresponding to the effective DL (DownLink) slot is time before the timing of the UL (UpLink) slot in which the CSI report is sent. A valid DL slot is, for example, a slot that contains at least one DL symbol or flexible symbol and is not within the range of the set measurement gap.

[0106]

[0107] Furthermore, if the terminal device 100 determines, for example, that there are multiple resources, it calculates the CSI reference time according to the following formula (2) so that the timing corresponding to the effective DL slot is a time before the timing of the UL slot in which the CSI report is sent.

[0108]

[0109] Furthermore, for example, if on-demand SSB cannot be received within the CSI reference time, the terminal device 100 may drop the CSI report. In other words, in this case, the terminal device 100 may, for example, not send the CSI report to the base station device 200. Hereafter, this will also be referred to as the dropping rule.

[0110] [Reflection in the Specification] Next, we will show an example of how the first embodiment is reflected in the 3GPP specification. Figures 14 to 16 show an example of the contents of the specification. The specification is, for example, TS38.214. Note that the specification name, chapter number, item number, name, value, and insertion location in the additional specification shown in the figures are merely examples and are not limited to these.

[0111] Figure 14 shows an example of a description in the first embodiment where one resource team is a subset of the other resource team. Specifically, in the example shown in Figure 14, for example, the resources included in resource team A are a subset of the resources included in resource team B, and the order of the resources included in resource team A is the same as the order of resources in resource team B.

[0112] In the example shown in Figure 14, resource team A and resource team B may each be, for example, an on-demand SSB resource team and an always-on SSB resource team.

[0113] Furthermore, Figures 15 and 16 are diagrams showing examples of how the dropping rule is described in the first modified example.

[0114] 10: Wireless communication system 100: Terminal device 110: CPU 120: Storage 121: Terminal communication program 122: Terminal information generation program 130: Memory 150: Wireless communication circuit 151: Antenna 200: Base station device 210: CPU 220: Storage 221: Base station communication program 222: Base station information generation program 230: Memory 250: Wireless communication circuit 251: Antenna

Claims

1. A terminal device comprising: a receiving unit that receives a second signal from a base station device that includes first information relating to the measurement of a first signal or the first signal and the third signal; a measuring unit that measures each of the first signal or the first signal and the third signal transmitted from the base station device; a control unit that generates a measurement result for at least one of the first signal or the first signal and the third signal according to the first information; and a transmitting unit that transmits the measurement result to the base station device.

2. The terminal device according to claim 1, wherein the first information includes information about resources used when transmitting the first signal or the first signal and the third signal, respectively.

3. The terminal device according to claim 1, wherein the first information includes correspondence information that associates information about resources used when transmitting the first signal or the first signal and the third signal with information about resources used when transmitting the measurement result.

4. The terminal device according to claim 3, wherein the measuring unit measures a fourth signal used for interference measurement, and the first information includes correspondence information that associates information about resources used when transmitting the first signal or the first signal and the third signal with information about resources used when transmitting the fourth signal.

5. The terminal device according to claim 3, wherein the measuring unit measures a fourth signal used for interference measurement, and the first information includes correspondence information relating resources used when transmitting the first signal or a specific first signal or third signal included in the first signal and the third signal to resources used when transmitting the fourth signal, and other correspondence information relating resources used when transmitting the first signal or another first signal or third signal included in the first signal and the third signal to resources used when transmitting the fourth signal.

6. The terminal device according to claim 2, wherein the first signal includes one or more on-demand SSBs.

7. The terminal device according to claim 2, characterized in that the third signal is always-on SSB.

8. The terminal device according to claim 4, wherein the first signal includes an on-demand SSB and an always-on SSB, and the transmitting unit transmits either the measurement result for the on-demand SSB corresponding to a specific resource among the first number of resources, or the measurement result for the always-on SSB corresponding to another resource among the second number of resources having the same characteristics as the specific resource, when the first number of resources used when transmitting the on-demand SSB and the second number of resources used when transmitting the always-on SSB are the same.

9. The terminal device according to claim 8, wherein, if the first number and the second number are different, the transmitting unit transmits either of the measurement results in association with the resource order of the resource corresponding to either of the measurement results in the resource corresponding to the larger of the first number and the second number.

10. The terminal device according to claim 8, wherein, when the first number and the second number are different, the transmitting unit transmits the measurement result corresponding to one of the first signals measured immediately before by the measuring unit, from among the measurement result for the on-demand SSB corresponding to the specific resource and the measurement result for the always-on SSB corresponding to the other resource.

11. The terminal device according to claim 1, further characterized in that when the measuring unit receives the first signal, the control unit occupies the processing resources available for generating the measurement result and generates the measurement result from the time the first signal or the first signal and the third signal are received until the time the transmitting unit transmits the measurement result.

12. The terminal device according to claim 1, wherein when the measurement unit receives the first signal, the control unit occupies the processing resources available for generating the measurement result from the time the first signal or the first signal and the third signal are received until a predetermined time after that time, and generates the measurement result.

13. The terminal device according to claim 2, wherein the control unit calculates a calculation time for generating the measurement result according to the number of resources corresponding to the first signal or the first signal and the third signal, identifies a specific timing prior to the timing at which the transmission unit transmits the measurement result, and generates the measurement result for the first signal or the first signal and the third signal measured by the measurement unit at the identified specific timing or at a timing prior to the identified specific timing.

14. A base station device comprising: a control unit that generates first information relating to the measurement of a first signal or the first signal and the third signal; a transmitting unit that transmits a second signal containing the first information, thereby causing a terminal device to measure each of the first signal or the first signal and the third signal, and causing the terminal device to generate a measurement result for at least one of the first signal or the first signal and the third signal according to the first information; and a receiving unit that receives the measurement result transmitted from the terminal device.

15. A wireless communication system comprising a terminal device and a base station device, wherein the base station device generates first information relating to the measurement of a first signal or a first signal and a third signal, and transmits a second signal including the first information, and the terminal device measures each of the first signal or the first signal and the third signal transmitted from the base station device, generates a measurement result for at least one of the first signal or the first signal and the third signal according to the first information, and transmits the measurement result to the base station device.

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