Base station and user equipment

Abstract

One embodiment of the present disclosure relates to a base station including: an information acquisition unit configured to acquire a system information block 1 (SIB1); and a communication processing unit configured to transmit the SIB1. The SIB1 includes frequency information indicating a frequency at which a SS / PBCH block (SSB) for a user equipment having a limited bandwidth capability is transmitted in a carrier.

Description

[0001] Cross-references of related applications

[0002] This application asserts a priority interest in Japanese Patent Application No. 2020-188299, filed on November 11, 2020, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This disclosure relates to a base station and user equipment. Background Technology

[0004] The 3GPP (3rd Generation Partnership Project) proposed a mobile communication technology and standardized it into a Technical Specification (TS). In particular, 5G (5th Generation) technology has now been proposed and standardized.

[0005] For example, as described in Non-Patent Document 1, the base station broadcasts system information, and the user equipment (UE) receives this system information. This system information includes a Master Information Block (MIB), System Information Block 1 (SIB1), and other SIBs.

[0006] In addition, as described in Non-Patent Document 2, multiple SS / PBCH (Synchronization Signal / Physical Broadcast Channel) blocks (SSBs) including MIBs can be transmitted at different frequencies within the carrier.

[0007] Furthermore, as described in Non-Patent Document 3, consideration is being given to UEs with reduced complexity. For example, research has begun on reducing the complexity of UEs, such as reducing the number of antennas or reducing bandwidth.

[0008] Existing technical documents

[0009] Patent documents

[0010] Non-patent document 1: 3GPP TS 38.331V16.2.0 (2020-09) "3rd Generation Partnership Project; Technical Specification Group Radio Access Network; NR; Radio ResourceControl (RRC) protocol specification (Release 16)"

[0011] Non-patent document 2: 3GPP TS 38.300V16.3.0 (2020-09) "3rd Generation Partnership Project; Technical Specification Group Radio Access Network; NR; NR and NG-RANOverall Description; Stage 2 (Release 16)"

[0012] Non-patent document 3: 3GPP TSG RAN Meeting #89e, Electronic Meeting, September 14-18, 2020, RP-201677, Ericsson, "Revised SID on Study on support of reducedcapability NR devices" Summary of the Invention

[0013] According to Non-Patent Document 1, the MIB includes controlResourceSetZero, which determines the Core Resource Set (CORESET) #0 configured for the PDCCH (Physical Downlink Control Channel) of SIB1. Furthermore, according to Non-Patent Document 1, SIB1 includes a set of parameters (i.e., genericParameters) for the initial bandwidth part (BWP). However, the inventors' detailed research revealed that since controlResourceSetZero and genericParameters are common information for all UEs, from a bandwidth perspective, CORESET #0 and the initial BWP may not be suitable for UEs with reduced capabilities, as described in Non-Patent Document 3.

[0014] In contrast, the inventors came up with the following idea: as described in Non-Patent Document 2, multiple SSBs are transmitted within a carrier, and the SSBs included in these multiple SSBs are used as SSBs for UEs with reduced capability. However, after detailed research, the inventors discovered the following problem: in order to receive the desired SSB (i.e., the SSB for UEs with reduced capability) from the aforementioned multiple SSBs, the UE with reduced capability needs to perform more frequency searches, which may take a long time.

[0015] The purpose of this disclosure is to provide a base station and user equipment that enable user equipment to receive desired SSBs more quickly.

[0016] One embodiment of this disclosure relates to a base station comprising: an information acquisition unit for acquiring system information block 1 (SIB1); and a communication processing unit for transmitting the SIB1. The SIB1 includes frequency information indicating the frequency at which an SS / PBCH block (SSB) for a user equipment with limited bandwidth is transmitted within a carrier.

[0017] One aspect of this disclosure relates to a user equipment comprising: a communication processing unit that receives a system information block (SIB1), the system information block (SIB1) including frequency information indicating the frequency at which an SS / PBCH block (SSB) for a user equipment with limited bandwidth is transmitted within a carrier; and an information acquisition unit that acquires the frequency information contained in the SIB1.

[0018] According to this disclosure, user equipment can receive the desired SSB more quickly. Additionally, according to this disclosure, other effects can be used instead of or in conjunction with this effect. Attached Figure Description

[0019] Figure 1 This is an explanatory diagram illustrating an example of the schematic structure of a system according to an embodiment of the present disclosure.

[0020] Figure 2 This is a block diagram illustrating an example of a schematic functional structure of a base station according to an embodiment of this disclosure.

[0021] Figure 3 This is a block diagram illustrating an example of a schematic hardware structure of a base station according to an embodiment of this disclosure.

[0022] Figure 4 This is a block diagram illustrating an example of the schematic functional structure of a user equipment according to an embodiment of this disclosure.

[0023] Figure 5 This is a block diagram illustrating an example of a schematic hardware structure of a user equipment according to an embodiment of this disclosure.

[0024] Figure 6 This is an explanatory diagram illustrating an example of the transmission of multiple SSBs involved in an embodiment of this disclosure.

[0025] Figure 7 This is an explanatory diagram illustrating an example of an initial downlink BWP involved in an embodiment of this disclosure.

[0026] Figure 8 This is a sequence diagram illustrating an example of a schematic flow of the processing involved in an embodiment of this disclosure. Detailed Implementation

[0027] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. Furthermore, in this specification and the accompanying drawings, elements that can be described in the same way are labeled with the same reference numerals, thus omitting repeated descriptions.

[0028] The explanations will be given in the following order.

[0029] 1. System Structure

[0030] 2. Base station structure

[0031] 3. Structure of User Equipment

[0032] 4. Operation example

[0033] 5. Variations

[0034] <1. System Structure>

[0035] Reference Figure 1 An example of the structure of system 1 according to embodiments of this disclosure will be described. (Refer to...) Figure 1 System 1 includes a base station 100 and a user equipment (UE) 200.

[0036] For example, System 1 is a system that conforms to the 3GPP Technical Specification (TS). More specifically, for example, System 1 is a system that conforms to the 5G or NR (New Radio) TS. Of course, System 1 is not limited to this example.

[0037] (1) Base station 100

[0038] Base station 100 is a node of the Radio Access Network (RAN) that communicates with UEs (e.g., UE 200) located within the coverage area 10 of base station 100.

[0039] For example, base station 100 uses the RAN's protocol stack to communicate with the UE (e.g., UE 200). This protocol stack may include, for example, the RRC (Radio Resource Control) layer, the SDAP (Service Data Adaptation Protocol) layer, the PDCP (Packet Data Convergence Protocol) layer, the RLC (Radio Link Control) layer, the MAC (Medium Access Control) layer, and the Physical (PHY) layer. Alternatively, the protocol stack may not include all of these layers, but only a portion of them.

[0040] For example, base station 100 is a gNB. A gNB is a node that provides NR user plane and control plane protocol terminations towards the UE and connects to the 5GC (5G Core Network) via the NG interface. Alternatively, base station 100 can be an en-gNB.

[0041] Base station 100 may include multiple nodes. These multiple nodes may include: a first node, hosting the higher layers of the aforementioned protocol stack; and a second node, hosting the lower layers of the protocol stack. The higher layers may include the RRC layer, SDAP layer, and PDCP layer; the lower layers may include the RLC layer, MAC layer, and PHY layer. The first node may be a CU (central unit), and the second node may be a DU (distributed unit). Furthermore, these multiple nodes may include a third node performing lower-level processing of the PHY layer, and the second node may perform upper-level processing of the PHY layer. This third node may be a RU (radio unit).

[0042] Alternatively, base station 100 may be one of the aforementioned nodes and may be connected to other units among the aforementioned nodes.

[0043] Base station 100 can be an IAB (Integrated Access and Backhaul) host or an IAB node.

[0044] (2)UE 200

[0045] UE 200 communicates with the base station. For example, UE 200 communicates with base station 100 when it is located within the coverage area 10 of base station 100.

[0046] For example, UE 200 uses the above protocol stack to communicate with the base station (e.g., base station 100).

[0047] <<2. Base Station Structure>>

[0048] Reference Figure 2 as well as Figure 3 An example of the structure of the base station 100 according to an embodiment of this disclosure will be described.

[0049] (1) Functional Structure

[0050] First, refer to Figure 2 An example of the functional structure of the base station 100 according to the embodiments of this disclosure will be described. (Refer to...) Figure 2 The base station 100 includes a wireless communication unit 110, a network communication unit 120, a storage unit 130, and a processing unit 140.

[0051] The wireless communication unit 110 transmits and receives signals wirelessly. For example, the wireless communication unit 110 receives signals from the UE and transmits signals to the UE.

[0052] The network communication unit 120 receives signals from the network and sends signals to the network.

[0053] Storage unit 130 stores various types of information.

[0054] The processing unit 140 provides various functions of the base station 100. The processing unit 140 includes an information acquisition unit 141 and a first communication processing unit 143. Furthermore, the processing unit 140 may also include other components besides these components. That is, the processing unit 140 is also capable of performing operations other than those of these components. The specific operations of the information acquisition unit 141 and the first communication processing unit 143 will be described in detail later.

[0055] For example, the processing unit 140 (communication processing unit 143) communicates with the UE (e.g., UE 200) via the wireless communication unit 110. For example, the processing unit 140 communicates with other nodes (e.g., nodes within the core network or other base stations) via the network communication unit 120.

[0056] (2) Hardware Structure

[0057] Next, refer to Figure 3 An example of the hardware structure of the base station 100 according to an embodiment of this disclosure will be described. (Refer to...) Figure 3The base station 100 includes an antenna 181, an RF circuit 183, a network interface 185, a processor 187, a memory 189, and a storage device 191.

[0058] Antenna 181 converts signals into radio waves and radiates these waves into space. Additionally, antenna 181 receives radio waves in space and converts them back into signals. Antenna 181 may include a transmitting antenna and a receiving antenna, or it may be a single antenna for both transmitting and receiving. Antenna 181 may be a directional antenna or may include multiple antenna elements.

[0059] The RF circuit 183 performs analog processing on the signals transmitted and received via the antenna 181. The RF circuit 183 may include a high-frequency filter, an amplifier, a modulator, and a low-pass filter, etc.

[0060] Network interface 185, for example, is a network adapter that sends signals to the network and receives signals from the network.

[0061] Processor 187 performs digital processing on signals transmitted and received via antenna 181 and RF circuitry 183. This digital processing includes processing of the RAN protocol stack. Processor 187 also processes signals transmitted and received via network interface 185. Processor 187 may include multiple processors or a single processor. The multiple processors may include: a baseband processor performing the aforementioned digital processing; and one or more processors performing other processing.

[0062] Memory 189 stores the program executed by processor 187, parameters associated with the program, and data associated with the program. Memory 189 may include at least one of the following: ROM (Read Only Memory), EPROM (Erasable Programmable Read Only Memory), EEPROM (Electrically Erasable Programmable Read Only Memory), RAM (Random Access Memory), and flash memory. All or part of memory 189 may be contained within processor 187.

[0063] Storage device 191 stores various information. Storage device 191 may include at least one of SSD (Solid State Drive) and HDD (Hard Disc Drive).

[0064] The wireless communication unit 110 can be implemented using an antenna 181 and an RF circuit 183. The network communication unit 120 can be implemented using a network interface 185. The storage unit 130 can be implemented using a storage device 191. The processing unit 140 can be implemented using a processor 187 and a memory 189.

[0065] Part or all of the processing unit 140 can be virtualized. In other words, part or all of the processing unit 140 can be implemented as a virtual machine. In this case, part or all of the processing unit 140 can operate as a virtual machine using a physical machine (i.e., hardware) containing a processor and memory, and a hypervisor.

[0066] Considering the above hardware structure, the base station 100 may include a memory storing a program (i.e., memory 189) and one or more processors (i.e., processors 187) capable of executing the program to perform operations on the processing unit 140. The program may be a program used to cause the processor to perform operations on the processing unit 140.

[0067] <3. Structure of User Equipment>

[0068] Reference Figure 4 as well as Figure 5 An example of the structure of the UE 200 according to the embodiments of this disclosure will be described.

[0069] (1) Functional Structure

[0070] First, refer to Figure 4 An example of the functional structure of the UE 200 according to the embodiments of this disclosure will be described. (Refer to...) Figure 4 The UE 200 includes a wireless communication unit 210, a storage unit 220, and a processing unit 230.

[0071] The wireless communication unit 210 transmits and receives signals wirelessly. For example, the wireless communication unit 210 receives signals from a base station and transmits signals to the base station. For example, the wireless communication unit 210 receives signals from other UEs and transmits signals to those other UEs.

[0072] Storage unit 220 stores various types of information.

[0073] The processing unit 230 provides various functions of the UE 200. The processing unit 230 includes an information acquisition unit 231 and a communication processing unit 233. Furthermore, the processing unit 230 may also include other components besides these. That is, the processing unit 230 is also capable of performing operations other than those of these components. The specific operations of the information acquisition unit 231 and the communication processing unit 233 will be described in detail later.

[0074] For example, the processing unit 230 (communication processing unit 233) communicates with a base station (e.g., base station 100) or other UEs via the wireless communication unit 210.

[0075] (2) Hardware Structure

[0076] Next, refer to Figure 5 An example of the hardware structure of the UE 200 according to an embodiment of this disclosure will be described. (Refer to...) Figure 5 The UE 200 includes an antenna 281, an RF circuit 283, a processor 285, a memory 287, and a storage device 289.

[0077] Antenna 281 converts signals into radio waves and radiates these waves into space. Additionally, antenna 281 receives radio waves in space and converts them back into signals. Antenna 281 may include a transmitting antenna and a receiving antenna, or it may be a single antenna for both transmitting and receiving. Antenna 281 may be a directional antenna or may include multiple antenna elements.

[0078] The RF circuit 283 performs analog processing on the signals transmitted and received via the antenna 281. The RF circuit 283 may include a high-frequency filter, an amplifier, a modulator, and a low-pass filter, etc.

[0079] Processor 285 performs digital processing on signals transmitted and received via antenna 281 and RF circuit 283. This digital processing includes processing of the RAN protocol stack. Processor 285 may include multiple processors, or it may be a single processor. The multiple processors may include: a baseband processor performing the aforementioned digital processing; and one or more processors performing other processing.

[0080] Memory 287 stores the program executed by processor 285, parameters related to the program, and data related to the program. Memory 287 may include at least one of ROM, EPROM, EEPROM, RAM, and flash memory. All or part of memory 287 may be contained within processor 285.

[0081] Storage device 289 stores various information. Storage device 289 may include at least one of SSD and HDD.

[0082] The wireless communication unit 210 can be implemented using an antenna 281 and an RF circuit 283. The storage unit 220 can be implemented using a storage device 289. The processing unit 230 can be implemented using a processor 285 and a memory 287.

[0083] The processing unit 230 can be implemented by a SoC (System on Chip) including a processor 285 and a memory 287. The SoC can include RF circuitry 283, and the wireless communication unit 210 can also be implemented by the SoC.

[0084] Considering the above hardware structure, UE 200 may include a memory storing a program (i.e., memory 287) and one or more processors (i.e., processors 285) capable of executing the program to perform operations on processing unit 230. The program may be a program used to cause the processor to perform operations on processing unit 230.

[0085] <4. Operation example>

[0086] Reference Figures 6 to 8 Examples of the operation of the base station 100 and UE 200 according to the embodiments of this disclosure will be described.

[0087] (1) UE with limited bandwidth capability

[0088] Before illustrating the operational examples, let's first explain the UE with limited bandwidth capabilities.

[0089] UEs with limited bandwidth capability have a narrower maximum bandwidth than regular UEs. This limited bandwidth capability can be referred to as reduced bandwidth capability or narrow bandwidth capability.

[0090] Furthermore, the aforementioned UEs with limited bandwidth capabilities may also have other limited capabilities, which can be simply referred to as UEs with limited capabilities (or reduced capabilities) or RedCap (Reduced Capability) UEs. For example, these limited capabilities may include the ability to limit the number of antennas; a UE with limited capabilities may have fewer antennas than a regular UE. These limited capabilities may include limited duplex communication capabilities; a UE with limited capabilities may communicate only through half-duplex communication. This half-duplex communication can be FDD (Frequency Division Duplex) half-duplex communication (half-duplex-FDD).

[0091] The aforementioned UE with limited bandwidth capability may have relaxed capability. For example, this relaxed capability may include relaxed processing capability, and the aforementioned UE with limited bandwidth capability may have lower processing performance than a typical UE.

[0092] In the following descriptions, for the sake of simplicity, "UE with limited bandwidth capability" will be referred to as "RedCapUE". That is, in the following descriptions, "RedCap UE" refers to "UE with limited bandwidth capability".

[0093] (2) Operation of base station 100: SSB transmission

[0094] For example, base station 100 (communication processing unit 143) transmits multiple SSBs at different frequencies within the carrier.

[0095] "Transmitting the SSB in a frequency" here means, for example, transmitting the SSB using the frequency as its center frequency.

[0096] Each SSB contains a MIB within its PBCH. The MIB within an SSB includes CORESET information related to the CORESET. This CORESET is the CORESET for the Type 0-PDCCH (Physical Downlink Control Channel) CSS (Common Search Space) set. In other words, the aforementioned CORESET is CORESET#0. Within this CORESET, the PDCCH for SIB1 is configured. The aforementioned CORESET information is controlResourceSetZero.

[0097] Specifically, the aforementioned SSBs include SSBs used by RedCap UEs. The MIB within this SSB includes CORESET information (i.e., controlResourceSetZero) related to the CORESET used by RedCap UEs. For example, the bandwidth of this CORESET is narrower than that of a CORESET used by a regular UE.

[0098] Reference Figure 6For example, on carrier 20, four SSBs (i.e., SSB31, SSB33, SSB35, and SSB37) are transmitted at different frequencies. For instance, SSB31 is an SSB used by a regular UE, and the MIB within SSB31 includes CoreSet information related to the CoreSet used by the regular UE. On the other hand, SSB35 is an SSB used by a RedCap UE, and the MIB within SSB35 includes CoreSet information related to the CoreSet used by the RedCap UE. For example, the bandwidth of this CoreSet used by the RedCap UE is narrower than the bandwidth of the aforementioned CoreSet used by the regular UE.

[0099] Furthermore, it is of course possible to transmit more than two SSBs for the RedCap UE within the aforementioned carrier. See again... Figure 6 For example, SSB33 or SSB37 can be an SSB used by RedCap UE.

[0100] By sending the SSB as described above, for example, CORESET#0 for a regular UE and CORESET#0 for a RedCap UE can be used.

[0101] (3) Operation of base station 100: Transmission of SIB1

[0102] For example, base station 100 (information acquisition unit 141) acquires multiple SIBs1 corresponding to the aforementioned multiple SSBs. Base station 100 (communication processing unit 143) transmits the aforementioned multiple SIBs1. Base station 100 (communication processing unit 143) also transmits the aforementioned multiple SIBs1 within the aforementioned carrier.

[0103] Refer again Figure 6 For example, base station 100 (communication processing unit 143) transmits SIB1 corresponding to SSB31, SSB33, SSB35 and SSB37 respectively.

[0104] – SIB1 transmission for ordinary UEs

[0105] Base station 100 (information acquisition unit 141) acquires SIB1. Base station 100 (communication processing unit 143) transmits SIB1. For example, this SIB1 is the SIB1 corresponding to the SSB used by a regular UE (i.e., the SIB1 used by a regular UE). The aforementioned plurality of SIB1s include this SIB1.

[0106] Refer again Figure 6 For example, the SIB1 mentioned above is the SIB1 corresponding to SSB31. That is, the PDCCH used for the SIB1 mentioned above is sent in the CORESET, which is determined by the CORESET information contained in the MIB within SSB31.

[0107] Frequency information

[0108] Specifically, in embodiments of this disclosure, the SIB1 includes frequency information indicating the frequency at which the SSB used by the RedCapUE is transmitted within the carrier.

[0109] For example, the frequency mentioned above is an SSB frequency, specifically, the 0th resource element (i.e., the 0th subcarrier) within the 10th resource block of a 20RB resource block constituting the SSB. The frequency is represented by the ARFCN (Absolute Radio Frequency Channel Number) of the frequency using the aforementioned frequency information.

[0110] Refer again Figure 6 For example, SIB1 corresponding to SSB31 includes frequency information indicating the frequency at which SSB35 is transmitted in carrier 20.

[0111] Therefore, for example, UE 200 can receive the desired SSB more quickly. More specifically, for example, if UE 200 is a RedCap UE, it can receive the SSB used by RedCap UEs more quickly. That is, even if UE 200 receives the SSB used by a normal UE and also receives the SIB1 used by a normal UE, it can still determine the frequency of the SSB used by the RedCap UE from the frequency information contained in the SIB1. Therefore, UE 200 does not need to continue repeatedly searching for frequencies and can quickly receive the SSB used by the RedCap UE.

[0112] As described above, within the aforementioned carrier, two or more SSBs for the RedCap UE can be transmitted. In this case, the aforementioned SIB1 can include the aforementioned frequency information for each of the two or more SSBs. Thus, for example, the UE 200 can select one SSB from the two or more SSBs.

[0113] —Measurement Information

[0114] For example, the SIB1 mentioned above includes measurement information for the measurement of the SSB used in the RedCap UE.

[0115] Refer again Figure 6 For example, SIB1, corresponding to SSB31, includes measurement information for measurements based on SSB35.

[0116] For example, the aforementioned measurement information includes information related to the timing of the measurement. More specifically, this information related to the timing of the measurement is, for example, information on the measurement timing configuration (MTC) for inter-frequency measurements. In other words, this information related to the timing of the measurement is information about the timing opportunity for the UE to measure the SSB. The aforementioned information related to the timing of the measurement is, for example, the SSB-MTC specified in 3GPP TS38.331V16.2.0. If the aforementioned SIB1 does not include the aforementioned information related to the timing of the measurement, the UE assumes that the periodicity of the SSB is a specified period (e.g., 5ms).

[0117] For example, the measurement information mentioned above includes information related to the block to be measured. More specifically, for example, this information related to the block to be measured is information about the set of SS (synchronization signal) blocks measured during the duration of the SSB-MTC. In other words, this information related to the block to be measured is information about the SSB pattern. The aforementioned information related to the block to be measured is, for example, the SSB-ToMeasure specified in 3GPP TS 38.331V16.2.0. If SIB1 does not include the aforementioned information related to the block to be measured, the UE measures all SSBs.

[0118] For example, the aforementioned measurement information includes information related to the measurement of RSSI (Reference Signal Strength Indicator). More specifically, for example, this information related to the RSSI measurement is configuration information used for measuring RSSI. This information related to the RSSI measurement is, for example, the SS-RSSI-Measurement specified in 3GPP TS38.331V16.2.0. If SIB1 does not include the aforementioned information related to the RSSI measurement, SIB1 applies the same value indicated by the SS-RSSI-Measurement within SIB2.

[0119] For example, the aforementioned measurement information includes information related to the derivation of the SSB index transmitted by neighboring cells. When this information is set to true, the UE assumes alignment of the SFN (System Frame Number) and frame boundary across adjacent frequencies. More specifically, for example, this information is the same as the deriveSSB-IndexFromCell information element determined as an information element within SIB2 in 3GPP TS 38.331V16.2.0. If the aforementioned information is not included in SIB1, the UE applies the same value indicated by the deriveSSB-IndexFromCell within SIB2.

[0120] Based on the above measurement information, for example, UE 200 can perform measurements of the SSB used by RedCap UE.

[0121] As described above, within the aforementioned carrier, two or more SSBs for the RedCap UE can be transmitted. In this case, SIB1 can include the aforementioned measurement information for each of the two or more SSBs. Thus, for example, UE 200 can perform measurements based on each of the two or more SSBs. Therefore, for example, UE 200 can select the SSB with good measurement results from the two or more SSBs.

[0122] Access permission / prohibition

[0123] For example, the above SIB1 explicitly or implicitly indicates whether access to the RedCap UE is allowed or denied.

[0124] For example, the above SIB1 used by a regular UE explicitly or implicitly indicates that the above access is prohibited.

[0125] Refer again Figure 6 For example, SIB1 (i.e., SIB1 for ordinary UEs) corresponding to SSB31 (i.e., SSB for ordinary UEs) explicitly or implicitly indicates that access by RedCap UEs is prohibited.

[0126] As an example, the above SIB1 does not include an information element indicating that RedCap UE access is allowed, which implicitly indicates that access by RedCap UE is prohibited.

[0127] As another example, the aforementioned SIB1 may include information elements indicating that the RedCap UE is barred from access, thereby explicitly indicating that the RedCap UE's access is barred.

[0128] As another example, the aforementioned SIB1 may include an information element indicating whether the RedCap UE is allowed or barred from access. Specifically, this information element may indicate that the RedCap UE is barred from access, thus the aforementioned SIB1 may explicitly indicate that the RedCap UE's access is blocked.

[0129] Therefore, for example, based on the frequency information mentioned above, UE 200 can be triggered to receive the SSB used by the RedCap UE.

[0130] —SIB1 transmission used by RedCap UE

[0131] Base station 100 (information acquisition unit 141) acquires SIB1 corresponding to the SSB used by the RedCap UE (i.e., SIB1 used by the RedCap UE). Base station 100 (communication processing unit 143) transmits this SIB1. The aforementioned plurality of SIB1s include this SIB1.

[0132] For example, the SIB1 mentioned above includes information related to the initial downlink BWP used by the RedCap UE and information related to the initial uplink BWP used by the RedCap UE.

[0133] Reference Figure 7 The SIB1 corresponding to SSB35 (i.e., the SSB used by the RedCap UE) includes information related to the initial downlink BWP45 used by the RedCap UE. On the other hand, the SIB1 corresponding to SSB31 (i.e., the SSB used by the regular UE) includes information related to the initial downlink BWP41 used by the regular UE. The bandwidth of the initial downlink BWP45 used by the RedCap UE is narrower than that of the initial downlink BWP41 used by the regular UE. An example of the initial downlink BWP has been given here, but the same applies to the initial uplink BWP.

[0134] By sending SIB1 as described above, for example, the initial BWP for a regular UE and the initial BWP for a RedCap UE can be used.

[0135] Furthermore, the SIB1 used by the RedCap UE can explicitly or implicitly indicate that access by a regular UE is prohibited. For example, the SIB1 can include barring information that explicitly indicates that access by a regular UE is prohibited. Thus, for example, an initial BWP dedicated to the RedCap UE can be implemented.

[0136] (4) Operation of UE 200

[0137] —SSB reception

[0138] UE 200 (communication processing unit 233) receives SSB transmitted by base station 100 within the aforementioned carrier.

[0139] For example, UE 200 (communication processing unit 233) receives one of a plurality of SSBs transmitted at different frequencies within the aforementioned carrier. For example, each of the plurality of SSBs is an SSB used by a regular UE or an SSB used by a RedCap UE.

[0140] For example, UE 200 (communication processing unit 233) first receives the SSB used by a regular UE. See again... Figure 6 For example, UE200 (communication processing unit 233) first receives SSB31 used by ordinary UE.

[0141] —SIB1 reception

[0142] UE 200 (communication processing unit 233) receives SIB1 corresponding to the received SSB. For example, UE 200 (communication processing unit 233) receives PDCCH for SIB1 in the CORESET determined by the CORESET information contained in the MIB within the received SSB, and receives SIB1.

[0143] For example, UE 200 (communication processing unit 233) receives SIB1 corresponding to the SSB used by a regular UE (i.e., SIB1 used by a regular UE), and this SIB1 includes the aforementioned frequency information. UE 200 (information acquisition unit 231) acquires the frequency information contained in this SIB1. Referring again... Figure 6 For example, UE 200 (communication processing unit 233) receives SIB1 corresponding to SSB31 used by a regular UE. This SIB1 includes frequency information indicating the frequency at which SSB35 is transmitted in carrier 20. Thus, for example, UE 200 can receive SSBs used by RedCap UEs more quickly.

[0144] For example, SIB1 also includes the measurement information, and UE 200 (information acquisition unit 231) acquires the measurement information included in SIB1. When SIB1 includes the frequency information and the measurement information for each of two or more SSBs used by the RedCap UE, UE 200 (communication processing unit 233) can perform measurements based on the measurement information for each of the two or more SSBs. UE 200 (communication processing unit 233) can select one of the two or more SSBs according to the measurement result. Thus, for example, UE 200 can select an SSB with good measurement results.

[0145] For example, the aforementioned SIB1 explicitly or implicitly indicates that access by a RedCap UE is prohibited. In other words, the aforementioned SIB1 indicates that the aforementioned SIB1 is the SIB1 used by a regular UE, not the SIB1 used by a RedCap UE.

[0146] —Further reception

[0147] ——SSB reception

[0148] As described above, the frequency information indicates the frequency at which the SSB used by the RedCap UE is transmitted within the aforementioned carrier. For example, UE200 is a RedCap UE. In this case, UE 200 (communication processing unit 233) receives the SSB used by the RedCap UE based on the aforementioned frequency information. Thus, for example, UE 200 can receive the SSB faster.

[0149] Refer again Figure 6 For example, SIB1 corresponding to SSB31 used by a regular UE includes frequency information indicating the frequency at which SSB35 used by a RedCap UE is transmitted within carrier 20. UE 200 (communication processing unit 233) receives SSB35 transmitted at that frequency based on the aforementioned frequency information.

[0150] The MIB within the aforementioned SSB used by the RedCap UE includes CORESET information (i.e., controlResourceSetZero) related to the CORESET used by the RedCap UE. Thus, for example, UE 200 can use CORESET#0 used by the RedCap UE.

[0151] ——SIB1 reception

[0152] UE 200 (communication processing unit 233) receives SIB1 corresponding to the SSB used by the RedCap UE. For example, UE 200 (communication processing unit 233) receives the PDCCH for SIB1 in the CORESET determined by the CORESET information contained in the MIB within the received SSB, and receives the SIB1. This SIB1 is the SIB1 used by the RedCap UE.

[0153] Refer again Figure 6 For example, UE 200 (communication processing unit 233) receives SIB1 corresponding to SSB35 used by RedCap UE.

[0154] The received SIB1 includes information related to the initial downlink BWP for the RedCap UE and information related to the initial uplink BWP for the RedCap UE. Thus, for example, UE 200 can use the initial BWP for the RedCap UE.

[0155] (5) Processing flow

[0156] Reference Figure 8 Examples of a portion of the processing involved in embodiments of this disclosure will be described.

[0157] Base station 100 transmits an SSB (S310) for a regular UE within a carrier. This SSB includes a MIB for a regular UE. UE 200 receives the SSB for a regular UE and obtains the MIB for a regular UE.

[0158] Base station 100 acquires SIB1 corresponding to the SSB used by the ordinary UE (i.e., SIB1 for the ordinary UE) and transmits it (S320). SIB1 includes frequency information indicating the frequency at which the SSB for the RedCap UE is transmitted within the aforementioned carrier. UE 200 receives SIB1 and acquires the frequency information contained in SIB1.

[0159] Base station 100 transmits an SSB (S330) for RedCap UE in the aforementioned frequency within the carrier. This SSB includes a MIB for RedCap UE. UE 200 receives the SSB for RedCap UE based on the aforementioned frequency information and obtains the MIB for RedCap UE. UE 200 obtains the CORESET information contained in the MIB. This CORESET information is related to the CORESET for RedCap UE.

[0160] Base station 100 acquires SIB1 corresponding to the SSB used by the RedCap UE (i.e., SIB1 used by the RedCap UE) and sends it (S340). UE 200 receives the SIB1. The SIB1 includes information related to the initial downlink BWP used by the RedCap UE and information related to the initial uplink BWP used by the RedCap UE.

[0161] <5. Variations>

[0162] The first to fifth modifications of the embodiments of this disclosure will be described. Two or more of these modifications may also be combined.

[0163] (1) First variant

[0164] As described above, as an example of an embodiment of this disclosure, within the aforementioned carrier, two or more SSBs used by the RedCap UE can be transmitted at different frequencies within the aforementioned carrier. In this case, as described above, SIB1 can include the aforementioned frequency information for each of the two or more SSBs.

[0165] As a first variation of the embodiments of this disclosure, UE 200 (communication processing unit 233) can receive one of the two or more SSBs used by RedCapUE, which is determined accordingly with the identification information used by UE 200. This identification information can be any UE ID. For example, the identification information can be the UE ID defined in 3GPP TS 38.304V16.2.0 (2020-09), or it can be 5G-S-TMSI (Temporary Mobile Subscriber Identity).

[0166] Specifically, UE 200 can select one SSB for RedCap UE from the two or more SSBs mentioned above, corresponding to the number of SSBs included in the two or more SSBs used by RedCap UE and the result of the modulo operation using the UE ID. When the number of SSBs is N, the result of the modulo operation can be 0 to N-1, and UE 200 can select the SSB corresponding to this result from the N SSBs. For example, the smaller the result, the lower the frequency at which the selected SSB is transmitted. That is, when the result is 0, the SSB transmitted at the lowest frequency among the N SSBs can be selected; when the result is N-1, the SSB transmitted at the highest frequency among the N SSBs can be selected.

[0167] Therefore, for example, UEs can be distributed across two or more SSBs used by RedCap UEs. As a result, UEs can be distributed across two or more CORESET#0s used by RedCap UEs corresponding to the two or more SSBs respectively. Furthermore, UEs can be distributed across two or more initial BWPs used by RedCap UEs corresponding to the two or more CORESET#0s respectively. Thus, UE concentration in a specific frequency band can be avoided.

[0168] (2) Second variation

[0169] As an example of an implementation of this disclosure, as described above, the SIB1 used by a typical UE includes the aforementioned frequency information.

[0170] As a second variation of the embodiments of this disclosure, the SIB1 used by the RedCap UE may also include frequency information. This frequency information may indicate the frequencies at which other SSBs used by the RedCap UE are transmitted within the aforementioned carrier.

[0171] Thus, for example, the RedCap UE can quickly receive other SSBs used by the RedCap UE.

[0172] The second variation can be combined with the first variation. Thus, for example, it is possible to further distribute the UE in more than two SSBs used by the RedCap UE.

[0173] (3) Third variation

[0174] As an example of an implementation of this disclosure, as described above, the plurality of SSBs transmitted by the base station 100 at different frequencies within a carrier wave.

[0175] As a third variation of the embodiments of this disclosure, base station 100 may use two or more nodes to transmit the aforementioned plurality of SSBs.

[0176] —Two or more DUs

[0177] As an example, base station 100 can use two or more DUs to transmit the aforementioned multiple SSBs. See again... Figure 6 For example, SSB31, SSB33, SSB35, and SSB37 can be sent by different DUs. As another example, two of SSB31, SSB33, SSB35, and SSB37 can be sent by the first DU, and the remaining two can be sent by the second DU.

[0178] In this case, base station 100 may be a gNB that includes two or more DUs as described above. Alternatively, base station 100 may be a CU connected to two or more DUs as described above.

[0179] —Two or more RUs

[0180] As another example, base station 100 can use two or more RUs to transmit the aforementioned multiple SSBs. See again... Figure 6 For example, SSB31, SSB33, SSB35, and SSB37 can be transmitted by different RUs. As another example, two of SSB31, SSB33, SSB35, and SSB37 can be transmitted by the first RU, and the remaining two can be transmitted by the second RU.

[0181] In this case, base station 100 may be a gNB that includes two or more RUs as described above. Alternatively, base station 100 may be a DU connected to the two or more RUs as described above, or it may be a CU connected to the DU.

[0182] (4) Fourth variation

[0183] In the above example of the embodiments of this disclosure, the base station 100 transmits the aforementioned plurality of SSBs at different frequencies within a carrier. However, the embodiments of this disclosure are not limited to this example.

[0184] As a fourth variation of the embodiments of this disclosure, the aforementioned plurality of SSBs transmitted at different frequencies within a carrier can be transmitted by base station 100 and other base stations. Referring again... Figure 6 For example, base station 100 could transmit SSB31, while other base stations could transmit SSB35. In this case, each of SSB33 and SSB37 could be transmitted by base station 100, by one of the aforementioned other base stations, or by yet another base station.

[0185] Each of base station 100 and the other base stations mentioned above can be a gNB. Alternatively, each of base station 100 and the other base stations mentioned above can be a DU or a RU.

[0186] (5) Fifth variation

[0187] In the above examples of embodiments of this disclosure, system 1 is a TS system compliant with 5G or NR. However, the system 1 involved in the embodiments of this disclosure is not limited to this example.

[0188] System 1 can also be a system compliant with other TSs in 3GPP. As an example, System 1 could be a system compliant with LTE (Long Term Evolution), LTE-A (LTE Advanced), or 4G TSs, and base station 100 could be an eNB (evolved NodeB). As another example, System 1 could be a system compliant with 3G TSs, and base station 100 could be a NodeB. As yet another example, System 1 could be a system compliant with a next-generation (e.g., 6G) TS.

[0189] Alternatively, System 1 can also be a system that conforms to the TS of other standardization organizations regarding mobile communications.

[0190] The embodiments of this disclosure have been described above, but this disclosure is not limited to these embodiments. Those skilled in the art should understand that these embodiments are merely examples and that various modifications can be made without departing from the scope and spirit of this disclosure.

[0191] For example, the steps in the process described in this specification may not be executed in chronological order as shown in the flowchart or sequence diagram. For example, the steps in the process may be executed in a different order than that shown in the flowchart or sequence diagram, or they may be executed in parallel. In addition, a part of the steps in the process may be deleted, or further steps may be added to the process.

[0192] For example, a method for operating the apparatus comprising one or more components described in this specification may be provided, or a program for causing a computer to perform the operation of the aforementioned components may be provided. Additionally, a computer-readable non-transitory storage medium storing the program may be provided. Of course, such methods, programs, and computer-readable non-transitory storage media are also included in this disclosure.

[0193] For example, in this disclosure, a user equipment (UE) may also be referred to as a mobile station, mobile terminal, mobile device, mobile unit, subscriber station, subscriber terminal, subscriber device, subscriber unit, wireless station, wireless terminal, wireless device, wireless unit, remote station, remote terminal, remote device, or remote unit, or other names.

[0194] For example, in this disclosure, "transmit" can mean performing processing at least one layer within the protocol stack used in transmitting, or it can also mean physically transmitting a signal wirelessly or via a wired connection. Alternatively, "transmit" can also mean a combination of performing the aforementioned processing at least one layer and physically transmitting a signal wirelessly or via a wired connection. Similarly, "receive" can mean performing processing at least one layer within the protocol stack used in receiving, or it can also mean physically receiving a signal wirelessly or via a wired connection. Alternatively, "receive" can also mean a combination of performing the aforementioned processing at least one layer and physically receiving a signal wirelessly or via a wired connection.

[0195] For example, in this disclosure, "obtain / acquire" can mean obtaining information from stored information, obtaining information from information received from other nodes, or obtaining information by generating information.

[0196] For example, in this disclosure, "include" and "comprise" do not mean that only the listed items are included, but rather that only the listed items may be included, or that other items may be included in addition to the listed items.

[0197] For example, in this disclosure, "or" does not mean logical XOR, but rather logical OR.

[0198] Furthermore, the technical features included in the above embodiments can also be manifested as the following features. Of course, this disclosure is not limited to the following features.

[0199] (Feature 1)

[0200] A base station (100) includes: an information acquisition unit (141) for acquiring System Information Block 1 (SIB1); and

[0201] The communication processing unit (143) transmits the SIB1.

[0202] The SIB1 includes frequency information indicating the frequency at which an SS / PBCH (Synchronization Signal / Physical Broadcast Channel) block (SSB) (35) for a user equipment with limited bandwidth is transmitted within a carrier (20).

[0203] (Feature 2)

[0204] According to the base station described in feature 1, the SSB is one of a plurality of SSBs that are transmitted at different frequencies within the carrier.

[0205] (Feature 3)

[0206] According to feature one or two, the base station SIB1 includes the frequency information for each of two or more SSBs used by a user equipment with limited bandwidth capabilities.

[0207] (Feature 4)

[0208] According to any one of features one to three, the frequency information of the base station is the ARFCN (Absolute Radio Frequency Channel Number) of the frequency.

[0209] (Feature 5)

[0210] According to any one of features one to four, the base station SIB1 includes measurement information for measurements based on the SSB.

[0211] (Feature Six)

[0212] According to the base station described in Feature 5, the measurement information includes at least one of the following: information related to the timing of the measurement, information related to the block to be measured, information related to the measurement of RSSI (Reference Signal Strength Indicator), and information related to the derivation of the index of SSB sent by neighboring cells.

[0213] (Feature 7)

[0214] According to the base station described in feature five or six, SIB1 includes the measurement information for each of two or more SSBs used by a user equipment with limited bandwidth capabilities.

[0215] (Feature 8)

[0216] According to any one of features one to seven, the SIB1 explicitly or implicitly indicates whether access by user equipment with limited bandwidth capabilities is permitted or prohibited.

[0217] (Feature Nine)

[0218] According to the base station described in Feature 8, SIB1 explicitly or implicitly indicates that the access is prohibited.

[0219] (Feature 10)

[0220] According to any one of features one to nine, the SIB1 is an SIB1 corresponding to other SSBs (31) transmitted in other frequencies within the carrier.

[0221] (Feature 11)

[0222] According to any one of features one to ten, the base station in the SSB includes a Master Information Block (MIB) that relates to a Control Resource Set (CORESET) for user equipment with limited bandwidth capabilities.

[0223] (Feature Twelve)

[0224] According to any one of features 1 to 11, the other SIB1 corresponding to the SSB includes: information relating to the initial downlink bandwidth portion (BWP) (45) for user equipment with limited bandwidth capability; and information relating to the initial uplink BWP for user equipment with limited bandwidth capability.

[0225] (Feature Thirteen)

[0226] According to any one of features one to twelve, in a base station, the communication processing unit transmits multiple SSBs at different frequencies within the carrier.

[0227] The plurality of SSBs includes the SSBs used by user equipment with limited bandwidth capabilities.

[0228] (Feature Fourteen)

[0229] According to the base station described in feature thirteen, the information acquisition unit acquires multiple SIB1s corresponding to the multiple SSBs respectively.

[0230] The communication processing unit sends the plurality of SIB1s.

[0231] The plurality of SIB1s includes the SIB1.

[0232] (Characteristic Fifteen)

[0233] A user equipment (200) includes:

[0234] The communication processing unit (233) receives System Information Block 1 (SIB1) including frequency information, the frequency information indicating the frequency at which an SS / PBCH (Synchronization Signal / Physical Broadcast Channel) block (SSB) (35) for a user equipment with limited bandwidth is transmitted within a carrier (20); and

[0235] The information acquisition unit (231) acquires the frequency information contained in the SIB1.

[0236] (Feature Sixteen)

[0237] According to the user equipment described in feature 15, the communication processing unit receives the SSB based on the frequency information.

[0238] (Feature 17)

[0239] According to the user equipment described in feature 15 or 16, SIB1 explicitly or implicitly indicates that access by user equipment with limited bandwidth capabilities is prohibited.

[0240] (Characteristic 18)

[0241] A method, performed by a base station (100), the method comprising:

[0242] Obtain System Information Block 1 (SIB1); and

[0243] Send the SIB1,

[0244] The SIB1 includes frequency information indicating the frequency at which an SS / PBCH (Synchronization Signal / Physical Broadcast Channel) block (SSB) (35) for a user equipment with limited bandwidth is transmitted within a carrier (20).

[0245] (Feature 19)

[0246] A method performed by a user equipment (200) includes:

[0247] Receive System Information Block 1 (SIB1) including frequency information, the frequency information indicating the frequency at which an SS / PBCH (Synchronization Signal / Physical Broadcast Channel) block (SSB) (35) for user equipment with limited bandwidth is transmitted within a carrier (20); and

[0248] Obtain the frequency information contained in SIB1.

[0249] (Feature 20)

[0250] A program used to make a computer execute:

[0251] Obtain System Information Block 1 (SIB1); and

[0252] Send the SIB1,

[0253] The SIB1 includes frequency information indicating the frequency at which an SS / PBCH (Synchronization Signal / Physical Broadcast Channel) block (SSB) (35) for a user equipment with limited bandwidth is transmitted within a carrier (20).

[0254] (Feature 21)

[0255] A program used to make a computer execute:

[0256] Receive System Information Block 1 (SIB1) including frequency information, the frequency information indicating the frequency at which an SS / PBCH (Synchronization Signal / Physical Broadcast Channel) block (SSB) (35) for user equipment with limited bandwidth is transmitted within a carrier (20); and

[0257] Obtain the frequency information contained in SIB1.

[0258] (Feature 22)

[0259] A computer-readable, non-transitory physical recording medium containing a program for execution by a computer:

[0260] Obtain System Information Block 1 (SIB1); and

[0261] Send the SIB1,

[0262] The SIB1 includes frequency information indicating the frequency at which an SS / PBCH (Synchronization Signal / Physical Broadcast Channel) block (SSB) (35) for a user equipment with limited bandwidth is transmitted within a carrier (20).

[0263] (Feature 23)

[0264] A computer-readable, non-transitory physical recording medium containing a program for execution by a computer:

[0265] Receive System Information Block 1 (SIB1) including frequency information, the frequency information indicating the frequency at which an SS / PBCH (Synchronization Signal / Physical Broadcast Channel) block (SSB) (35) for user equipment with limited bandwidth is transmitted within a carrier (20); and

[0266] Obtain the frequency information contained in SIB1.

Claims

1. A user equipment (200), comprising: The communication processing unit receives frequency information, measurement information, and system information. The frequency information indicates the absolute radio frequency channel number of the synchronization signal / physical broadcast channel (SS / PBCH block SSB). The measurement information is used to perform measurements based on the SSB. The system information includes information elements indicating whether access by capability-restricted user equipment is permitted. When the user equipment is a capability-limited user equipment, and the information element indicating that the capability-limited user equipment is allowed to access is included in the system information, the communication processing unit performs the measurement based on the SSB based on the measurement timing information for inter-frequency measurement included in the measurement information.

2. The user equipment according to claim 1, The measurement information includes information indicating the set of SSBs measured during the duration of the measurement timing. The communication processing unit performs the measurement based on the SSB based on the information indicating the set of SSBs.

3. The user equipment according to claim 1 or claim 2, The measurement information includes information indicating the measurement of the Reference Signal Strength Indicator (RSSI). The communication processing unit performs RSSI measurement based on the information obtained from the measurement of the Reference Signal Strength Indicator (RSSI).

4. The user equipment according to any one of claims 1 to 3, The SSB used for the capability-limited user equipment is different from the SSB used for ordinary user equipment that is not the capability-limited user equipment.

5. A base station (100), comprising: The communication processing unit transmits frequency information, measurement information, and system information. The frequency information indicates the absolute radio frequency channel number of the synchronization signal / physical broadcast channel (SS / PBCH block SSB). The measurement information is used to perform measurements based on the SSB. The system information includes information elements indicating whether access by capability-restricted user equipment is permitted. When the user equipment is a capability-limited user equipment and the information element indicating that the capability-limited user equipment is allowed to access is included in the system information, the user equipment performs the measurement based on the SSB based on the measurement information including the information indicating the measurement timing for inter-frequency measurement.

6. The base station according to claim 5, The measurement information includes information indicating the set of SSBs measured during the duration of the measurement timing.

7. The base station according to claim 5 or claim 6, The measurement information includes information for a reference signal strength indicator (RSSI) and information indicating the RSSI, the RSSI being based on the SSB for the capability-limited user equipment.

8. The base station according to any one of claims 5 to 7, The SSB used for the capability-limited user equipment is different from the SSB used for ordinary user equipment that is not the capability-limited user equipment.

9. A method performed by a user equipment (200), comprising: The system receives frequency information, measurement information, and system information. The frequency information indicates the absolute radio frequency channel number of the synchronization signal / physical broadcast channel SS / PBCH block SSB. The measurement information is used to perform measurements based on the SSB. The system information includes information elements indicating whether access by capability-restricted user equipment is permitted. as well as If the user equipment is a capability-limited user equipment, and the information element indicating that the capability-limited user equipment is allowed to access is included in the system information, the measurement based on the SSB is performed based on the measurement timing information for inter-frequency measurement included in the measurement information.

10. The method according to claim 9, The measurement information includes information indicating the set of SSBs measured during the duration of the measurement timing. The measurement is performed based on the information indicating the set of SSBs.

11. The method according to claim 9 or claim 10, The measurement information includes information indicating the measurement of the Reference Signal Strength Indicator (RSSI). The measurement is performed based on the information obtained from the measurement of the Reference Signal Strength Indicator (RSSI).

12. The method according to any one of claims 9 to 11, The SSB used for the capability-limited user equipment is different from the SSB used for ordinary user equipment that is not the capability-limited user equipment.

13. A method performed by a base station (100), comprising: The system transmits frequency information, measurement information, and system information. The frequency information indicates the absolute radio frequency channel number of the synchronization signal / physical broadcast channel (SS / PBCH) block SSB. The measurement information is used to perform measurements based on the SSB. The system information includes information elements indicating whether access by capability-restricted user equipment is permitted. When the user equipment is a capability-limited user equipment and the information element indicating that the capability-limited user equipment is allowed to access is included in the system information, the user equipment performs the measurement based on the SSB based on the measurement information including the information indicating the measurement timing for inter-frequency measurement.

14. The method according to claim 13, The measurement information includes information indicating the set of SSBs measured during the duration of the measurement timing.

15. The method according to claim 13 or claim 14, The measurement information includes information indicating the measurement of the Reference Signal Strength Indicator (RSSI), which is used for RSSI measurement based on the SSB.

16. The method according to any one of claims 13 to 15, The SSB used for the capability-limited user equipment is different from the SSB used for ordinary user equipment that is not the capability-limited user equipment.

Images