Method executed by network side device in wireless communication network and network side device

Abstract

The invention discloses a method executed by network side equipment in a wireless communication network and the network side equipment. The network side equipment provided by the invention comprises a processing unit which is configured to determine a synchronization signal block (SSB) in a synchronization signal block (SSB) set to be used at a next transmission timing according to information which is received from user equipment and is related to the use condition of the SSB in the SSB set in a past time period, and the past time period comprises a plurality of transmission timings; and a transmission unit configured to transmit the determined SSB at the next transmission timing. According to the network side equipment provided by the invention, the accuracy of determining the SSB to be used at the next transmission timing can be improved, so that the rapid change of the UE can be coped with and the system capacity can be improved. Furthermore, the network side equipment provided by the invention can determine the SSB to be used at the next transmission timing according to the measured signal quality of the SSB, so that the interference between the network side equipment can be avoided, and the SINR (Signal to Interference plus Noise Ratio) of the received signal is improved.

Description

Technical Field

[0001] The present disclosure relates to the field of wireless communication, and more particularly to a method performed by a network-side device in a wireless communication network, and a corresponding network-side device. Background Art

[0002] In a Universal Mobile Telecommunications System (UMTS) network, Long Term Evolution (LTE) has been standardized for further high data rates, low latency, etc. In addition, subsequent systems of LTE are being studied for further broadbandization and high speed of LTE. In subsequent systems of LTE, for example, there are systems such as Long Term Evolution-Advanced (LTE-A), Future Radio Access (FRA), 5th generation mobile communication system (5G), 5G+(5G plus), Radio Access Technology (New-RAT), New Radio (NR), etc.

[0003] In 5G and subsequent systems, in order for a UE to access a wireless communication network system, a network-side device needs to periodically transmit a Synchronization Signal Block (SSB). However, the current mechanism for determining the SSB to be transmitted has problems such as a long configuration period and poor system performance. Summary of the Invention

[0004] In view of the above problems, according to one aspect of the present disclosure, there is provided a network-side device in a wireless communication network, including: a processing unit configured to determine an SSB in the SSB set to be used at the next transmission timing according to information received from a user equipment and related to the usage of the SSB in the SSB set during a past time period, where the past time period includes a plurality of transmission timings; and a sending unit configured to send the determined SSB at the next transmission timing.

[0005] According to one aspect of the present disclosure, there is provided a method for wireless communication at a network side device, including: determining, according to information received from a user equipment and related to the usage of synchronization signal blocks (SSBs) in a set of SSBs during a past time period, the SSB in the set of SSBs to be used for the next transmission timing, where the past time period includes a plurality of transmission timings; and transmitting the determined SSB at the next transmission timing.

[0006] For the network side device and method according to the above aspect of the present disclosure, since the network side device and method provided by the present disclosure can determine the SSB to be used for the next transmission timing according to the information related to the usage of SSBs received from the user equipment, the accuracy of the determined SSB to be used for the next transmission timing can be improved compared with the prior art, so as to cope with the rapid changes of the UE and improve the system capacity. In addition, since the network side device and method provided by the present disclosure can further determine the SSB to be used for the next transmission timing according to the measured signal quality of the SSB, the interference between network side devices can be avoided, and the SINR of the received signal can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] By describing the embodiments of the present disclosure in more detail in conjunction with the drawings, the above and other objects, features, and advantages of the present disclosure will become more obvious. The drawings are used to provide a further understanding of the embodiments of the present disclosure, and constitute a part of the specification, and are used to explain the present disclosure together with the embodiments of the present disclosure, and do not constitute a limitation to the present disclosure. In the drawings, the same reference numerals generally represent the same components or steps.

[0008] Figure 1 FIG. shows a schematic diagram of a wireless communication network system according to an embodiment of the present disclosure.

[0009] Figure 2 FIG. shows a schematic diagram of a network side device transmitting an SSB according to an embodiment of the present disclosure.

[0010] Figure 3 FIG. shows an example of transmitting an SSB.

[0011] Figure 4 FIG. shows a schematic diagram of a way of transmitting an SSB.

[0012] Figure 5 FIG. shows a flowchart of a method for wireless communication at a network side device according to an embodiment of the present disclosure.

[0013] Figure 6 FIG. shows a schematic diagram of determining the SSB to be used according to the first related information according to an embodiment of the present disclosure.

[0014] Figures 7 - 12 Shows a schematic diagram related to second related information according to an embodiment of the present disclosure.

[0015] Figure 13 Shows a schematic diagram of interference between the network-side device and an adjacent network-side device established by the network-side device according to an embodiment of the present disclosure.

[0016] Figure 14 Shows a block diagram of a network-side device in a wireless communication network according to an embodiment of the present disclosure.

[0017] Figure 15 Is a diagram showing an example of the hardware structure of a network-side device according to an embodiment of the present disclosure. Detailed implementation manners

[0018] In order to make the objectives, technical solutions, and advantages of the present disclosure more obvious, example embodiments according to the present disclosure will be described in detail below with reference to the accompanying drawings. In the drawings, the same reference numerals denote the same elements throughout. It should be understood that the embodiments described in the present disclosure are merely illustrative and should not be construed as limiting the scope of the present disclosure.

[0019] Figure 1 Shows a schematic diagram of a wireless communication network system 10 according to an embodiment of the present disclosure.

[0020] Figure 1 The shown wireless communication network system 10 may be a wireless communication network system according to NR. Note that the above is only an example. Figure 1 The shown wireless communication network system may be any suitable existing or future-developed wireless communication network system.

[0021] In Figure 1 the wireless communication network system 10, there are three base stations (for example, gNBs 100A, 100B, and 100C) and one UE 200. Note that the above numbers of base stations and UEs are only examples. The wireless communication network system 10 may include any number of base stations and UEs based on the actual scenario.

[0022] To enable the UE 200 to join the wireless communication network system 10, each of the base stations 100A, 100B, and 100C may periodically transmit an SSB. Specifically, each base station may transmit the SSB through a beam corresponding to the SSB. After receiving the SSB, the UE 200 measures and selects the SSB with the best quality and indicates the selection result to the base station. The base station communicates with the UE according to the SSB selected by the UE.

[0023] Figure 2A schematic diagram showing a network - side device transmitting SSB according to an embodiment of the present disclosure is shown. Each network - side device may be configured with an SSB set including multiple SSBs, and each network - side device may use different beams to transmit different SSBs in the SSB set. As Figure 2 shown, each base station may be configured with an SSB set including 64 SSBs, and each base station may use 64 beams corresponding to the 64 SSBs to transmit the 64 SSBs. Note that the number of SSBs, the number of beams, and their corresponding relationship in the above - mentioned base station are only examples. The base station may have any number of SSBs and beams and an appropriate corresponding relationship between SSBs and beams based on the actual scenario.

[0024] The SSB may include a Primary Synchronization Signal (PSS), a Secondary Synchronization Signal (SSS), and a Physical Broadcast Channel (PBCH).

[0025] The SSB can be used for time / frequency synchronization, cell identification, broadcast information, beam identification, layer 1 measurements (e.g., Reference Signal Receiving Power (RSRP) (i.e., L1 - RSRP), Signal to Interference plus Noise Ratio (SINR) (i.e., L1 - SINR)), and layer 3 measurements (e.g., RSRP, Reference Signal Received Quality (RSRQ), Radio Link Monitoring (RLM)), etc.

[0026] Figure 3 A schematic diagram showing an example of transmitting SSB is shown. As Figure 3 shown, the SSB can be transmitted periodically, for example, with a transmission period of 20 ms. The base station can transmit all SSBs within the first few milliseconds (e.g., 5 ms) of each transmission period. Some time - frequency resources (e.g., time slots, OFDM - based symbols) may be occupied when transmitting the SSB.

[0027] Figure 4 A schematic diagram showing a way of transmitting SSB is shown. In Figure 4In the illustrated diagram, the network-side device can transmit all the SSBs with a relatively long period, for example, with a period of 100 ms.

[0028] Between two periods of transmitting all the SSBs, the network-side device can transmit some of the SSBs with a shorter period, for example, with a period of 20 ms. This shorter period can also be referred to as the transmission timing or transmission occasion. During the process of the network-side device transmitting these partial SSBs, the network-side device can turn off all the other SSBs.

[0029] As Figure 4 shown, the base station gNB 100A transmits some of the SSBs at three transmission timings. The base station gNB 100B transmits some of the SSBs at N transmission timings. However, the SSBs in the above-mentioned partial SSBs are determined by the base station based on the historical usage of the SSBs. For example, the base station uses the SSBs sequentially. For example, at the first transmission timing, it transmits the SSBs numbered 1, 4, 7, and 10, at the next second transmission timing, it transmits the SSBs numbered 2, 5, 8, and 11, and then at the next third transmission timing, it transmits the SSBs numbered 3, 6, 9, and 12, etc., and turns off the unused SSBs, thereby saving system resources.

[0030] However, the above way of configuring partial SSBs has problems such as a relatively long configuration period and being unable to cope with bursty data traffic.

[0031] To solve the above problems, the present disclosure provides a method for wireless communication at a network-side device, and this method can determine the SSBs in the SSB set to be used at the next transmission timing according to the information related to the usage of the SSBs in the SSB set received from the UE during a past time period, so as to better determine and use the SSBs suitable for the current network environment. Below, a method for wireless communication at a network-side device and the corresponding network-side device provided by one aspect of the present disclosure will be described in detail with reference to the accompanying drawings.

[0032] Figure 5 A flowchart of a method for wireless communication at a network-side device according to an embodiment of the present disclosure is shown. Figure 5The method shown can be performed by a network - side device. As an example, the network - side device can be a base station, such as the gNB described above. Alternatively, the network - side device can be an Operation Administration and Maintenance (OAM) module or a Service Management and Orchestration (SMO) module that interacts with the base station outside the base station. When the network - side device is the above - mentioned OAM or SMO module, the OAM or SMO module needs to transmit the SSB to be used for the next transmission timing determined by executing the method provided in this disclosure to, for example, the base station for subsequent operations. Alternatively, the network - side device can also be an upper - layer node of the base station.

[0033] Referring to Figure 5 , in step S510, the network - side device can determine the SSB in the set of synchronization signal blocks (SSBs) to be used for the next transmission timing according to the information received from the user equipment and related to the usage of the SSBs in the set of SSBs during a past time period, where the past time period includes multiple transmission timings.

[0034] In an example according to the present disclosure, the information received from the user equipment and related to the usage of the SSBs in the set of SSBs during a past time period may include at least one of: first - related information of the SSBs used by the user equipment during the past time period and second - related information of the SSBs not used by the user equipment during the past time period. Thus, the SSB to be used for the next transmission timing can be accurately determined according to the real - time usage of the user equipment, and further, the rapid changes of the user equipment can be coped with and the system capacity can be improved.

[0035] As an example, the past time period can include 2 transmission timings. As Figure 4 shown, at gNB 100A, the transmission timings when transmitting partial SSBs labeled ① and ②. As another example, the past time period can include N - 1 transmission timings, where N is a positive integer. As Figure 4 shown, at gNB 100B, the transmission timings when transmitting partial SSBs labeled ① to N - 1.

[0036] When the UE uses a certain SSB or the beam corresponding to the SSB to interact with the base station for data, the base station can obtain the information related to the usage of the SSB based on the interacted data.

[0037] In an example according to the present disclosure, the first related information may include at least one of the following items: an SSB used by a user equipment at a transmission timing immediately adjacent to the next transmission timing during the past time period; the number of times a specific SSB has been used by the user equipment during the past time period. In this case, the network side device may determine, based on the first related information, whether the SSB used by the user equipment during the past time period is to be used as the SSB for the next transmission timing. In an example of the present disclosure, regarding the "number of times", if a specific SSB is used by a user equipment at one transmission timing, it is counted as one time.

[0038] As an example, in the case where the first related information includes an SSB used by the user equipment at a transmission timing immediately adjacent to the next transmission timing during the past time period, the network side device may determine the SSB used by the user equipment at a transmission timing immediately adjacent to the next transmission timing during the past time period as the SSB to be used for the next transmission timing. As shown in (a) of Figure 6 , the past time period may include two transmission timings, namely, t(m - 1) and t(m - 2), where m is a positive integer. At the transmission timing t(m - 1) immediately adjacent to the next transmission timing t(m), the SSBs numbered 1, 3, and N - 1 are used by the UE. For example, for the transmission timing t(m - 1), the SSB numbered 1 is used 2 times, which means 2 UEs have used this SSB. Another example, the SSB numbered N - 1 is used 3 times, which means 3 UEs have used this SSB. Figure 6 In Figure 6 , OFF means closed, that is, the SSB is closed during the past time period or the next transmission timing. In the above case, the network side device may determine, based on the first related information, the SSBs numbered 1, 3, and N - 1 used by the UE as the SSBs to be used for the next transmission timing t(m). For example, as shown in (b) of

[0039] As another example, in the case where the first related information includes the number of times a specific SSB has been used by the user equipment during the past time period, the network side device may determine the SSB that has been used more than a first predetermined number of times as the SSB to be used for the next transmission timing. The first predetermined number of times may be determined based on the actual usage scenario. As shown in Figure 6As shown in (a) therein, the past time period may include two transmission timings, namely, t(m - 1) and t(m - 2). At the transmission timing t(m - 2), the SSB numbered 1 was used 1 time, the SSB numbered 2 was used 0 times, the SSB numbered 3 was used 1 time, and the SSB numbered N - 1 was used 4 times. At the transmission timing t(m - 1), the SSB numbered 1 was used 2 times, the SSB numbered 3 was used 1 time, and the SSB numbered N - 1 was used 2 times. The above first predetermined number can be preset to 2. Since the total number of times the SSB numbered 1 and the SSB numbered N - 1 were used by the UE during the past time period both exceeded 2 times, being 3 times and 6 times respectively, the network - side device can determine the SSB numbered 1 and N - 1 used by the UE based on the first relevant information as the SSBs to be used at the next transmission timing t(m). For example Figure 6 in (c), at the next transmission timing t(m), the SSB numbered 1 and N - 1 will be turned on (i.e., ON), while the other SSBs will be turned off (i.e., OFF).

[0040] As another example, in the case where the first relevant information includes the SSBs used by the user equipment at the transmission timing immediately adjacent to the next transmission timing during the past time period, and the number of times a specific SSB was used by the user equipment during the past time period, combining the above two examples, the network - side device can determine that the SSB numbered 1, 3, and N - 1 used by the UE will be the SSBs to be used at the next transmission timing t(m). For example, combine Figure 6 the SSBs to be used determined in (b) and (c).

[0041] It can be seen from the above 3 examples that the method provided by the present disclosure can determine the SSBs that have been continuously used by the UE during the past time period to be continuously used at the next transmission timing, so as to consider the current network environment and continue to provide uninterrupted services for the UE, which can bring a good experience to users.

[0042] According to another aspect of the present disclosure, in the example according to the present disclosure, the second relevant information includes at least one of the following items: the number of times a specific SSB adjacent to the SSB not used by the user equipment was used by the user equipment, and the measured signal quality of a specific SSB adjacent to the SSB not used by the user equipment. In this case, the network - side device can determine whether the SSB not used by the user equipment during the past time period is the SSB to be used at the next transmission timing.

[0043] The following two examples are described in the case where the second related information includes the number of times a specific SSB adjacent to the SSB not used by the user equipment is used by the user equipment.

[0044] Example 1, the number of times a specific SSB adjacent to the SSB not used by the user equipment is used by the user equipment may include the number of times a specific SSB adjacent to the SSB not used by the user equipment in the transmission timing immediately adjacent to the next transmission timing. In this case, the network-side device may determine the SSB not used by the user equipment as the SSB to be used in the next transmission timing when the SSB adjacent to the SSB not used by the user equipment is used by the user equipment more than a second predetermined number of times. The second predetermined number of times may be determined based on the actual usage scenario and may be the same as or different from the above first predetermined number of times. As Figure 7 shown in (a) of, in the transmission timing t(m - 1) immediately adjacent to the next transmission timing t(m), the specific SSB numbered 3 adjacent to the SSB numbered 4 not used by the user equipment is used by the user equipment 4 times. The above second predetermined number of times may be set to 3. In this case, the network-side device may determine that the SSBs numbered 2 and 4 will be the SSBs to be used in the next transmission timing t(m) according to the second related information. In addition, since the network-side device may determine that the SSB numbered 3 will be the SSB to be used in the next transmission timing t(m) according to the above first related information, as Figure 7 shown in (b) of, in the next transmission timing t(m), the SSBs numbered 2, 3, and 4 will be turned on (i.e., ON), while the other SSBs will be turned off (i.e., OFF).

[0045] Example 2, the number of times a specific SSB adjacent to the SSB not used by the user equipment is used by the user equipment may include the number of times a specific SSB adjacent to the SSB not used by the user equipment in M transmission timings immediately adjacent to the next transmission timing in the past time period. As Figure 8 , Figure 9 and Figure 10 shown in (a) of.

[0046] The network-side device may determine the SSB not used by the user equipment as the SSB to be used in the next transmission timing when the SSB adjacent to the SSB not used by the user equipment is used by the user equipment on average more than a third predetermined number of times in the past time period. The past time period may include two transmission timings. The third predetermined number of times may be determined based on the actual usage scenario and may be the same as or different from the above first predetermined number of times or the above second predetermined number of times. As Figure 8As shown in (a) therein, the past time period may include two transmission timings, namely transmission timings t(m - 1) and t(m - 2). At transmission timing t(m - 1), the SSB numbered 4 adjacent to the SSB numbered 5 that has not been used by the user equipment was used by the user equipment 3 times. At transmission timing t(m - 2), the SSB numbered 4 adjacent to the SSB numbered 5 that has not been used by the user equipment was used by the user equipment 2 times. The third predetermined number of times may be set to 2. In this case, the network - side device may determine, according to the second relevant information, that the SSB numbered 5 will be the SSB to be used at the next transmission timing t(m). In addition, since the network - side device may determine, according to the above - mentioned first relevant information, that the SSBs numbered 3 and 4 will be the SSBs to be used at the next transmission timing t(m), so as Figure 8 shown in (b) therein, at the next transmission timing t(m), the SSBs numbered 3, 4, and 5 will be turned on (i.e., ON), while the other SSBs will be turned off (i.e., OFF).

[0047] The network - side device may determine the SSB that has not been used by the user equipment as the SSB to be used at the next transmission timing when the increment value of the number of times the SSB adjacent to the SSB that has not been used by the user equipment has been used by the user equipment within the past time period exceeds the fourth predetermined number of times. The fourth predetermined number of times may be determined based on the actual usage scenario and may be the same as or different from at least one of the above - mentioned first predetermined number of times, the above - mentioned second predetermined number of times, and the above - mentioned third predetermined number of times. As Figure 9 shown in (a) therein, the past time period may include two transmission timings, namely transmission timings t(m - 1) and t(m - 2). At transmission timing t(m - 1), the SSB numbered 4 adjacent to the SSB numbered 5 that has not been used by the user equipment was used by the user equipment 3 times. At transmission timing t(m - 2), the SSB numbered 4 adjacent to the SSB numbered 5 that has not been used by the user equipment was used by the user equipment 0 times. The fourth predetermined number of times may be set to 2. In this case, the network - side device may determine, according to the second relevant information, that the SSB numbered 5 will be the SSB to be used at the next transmission timing t(m). In addition, since the network - side device may determine, according to the above - mentioned first relevant information, that the SSBs numbered 3 and 4 will be the SSBs to be used at the next transmission timing t(m), so Figure 9 shown in (b) therein, at the next transmission timing t(m), the SSBs numbered 3, 4, and 5 will be turned on (i.e., ON), while the other SSBs will be turned off (i.e., OFF).

[0048] The network - side device can determine the SSB that has not been used by the user equipment as the SSB to be used in the next transmission timing when the number of times the SSB adjacent to the SSB not used by the user equipment is used by the user equipment in the subsequent transmission timing within the past time period increases by more than the fifth predetermined number compared to the number of times it is used in the previous transmission timing. The fifth predetermined number can be determined based on the actual usage scenario and can be the same as or different from at least one of the above - mentioned first predetermined number, second predetermined number, third predetermined number, and fourth predetermined number. As Figure 10 shown in (a) of , the past time period can include three transmission timings, namely transmission timings t(m - 1), t(m - 2), and t(m - 3). At transmission timing t(m - 1), the SSB numbered 4 adjacent to the SSB numbered 5 that has not been used by the user equipment is used by the user equipment 4 times. At transmission timing t(m - 2), the SSB numbered 4 adjacent to the SSB numbered 5 that has not been used by the user equipment is used by the user equipment 1 time. At transmission timing t(m - 3), the SSB numbered 4 adjacent to the SSB numbered 5 that has not been used by the user equipment is used by the user equipment 0 times. The above - mentioned fifth predetermined number can be set to 1. In this case, the network - side device can determine that the SSB numbered 5 will be the SSB to be used in the next transmission timing t(m) according to the second - related information. In addition, since the network - side device can determine that the SSBs numbered 3 and 4 will be the SSBs to be used in the next transmission timing t(m) according to the above - mentioned first - related information, as Figure 10 shown in (b) of , in the next transmission timing t(m), the SSBs numbered 3, 4, and 5 will be turned on (i.e., ON), while the other SSBs will be turned off (i.e., OFF).

[0049] As an example, when the second - related information includes the measured signal quality of a specific SSB adjacent to the SSB not used by the user equipment, the second - related information can include the number of access failures of the specific SSB adjacent to the SSB not used by the user equipment within, for example, 2 transmission timings within the past time period. In this case, the network - side device can determine the SSB that has not been used by the user equipment as the SSB to be used in the next transmission timing when the access failures of the SSB adjacent to the SSB not used by the user equipment exceed a predetermined number of failures. The predetermined number of failures can be determined based on the actual usage scenario. As Figure 11As shown in (a) of , the past time period may include two transmission timings, namely transmission timings t(m - 1) and t(m - 2). At transmission timing t(m - 1), the number of times the user equipment attempts to access and fails for the SSB numbered 4 adjacent to the SSB numbered 5 that has not been used by the user equipment is 3 times. At transmission timing t(m - 2), the number of times the user equipment attempts to access and fails for the SSB numbered 4 adjacent to the SSB numbered 5 that has not been used by the user equipment is 0 times. The predetermined number of failures can be set to 2. In this case, the network - side device can determine that the SSB numbered 5 will be the SSB to be used at the next transmission timing t(m) according to the second relevant information. In addition, since the network - side device can determine that the SSBs numbered 3 and 4 will be the SSBs to be used at the next transmission timing t(m) according to the above - mentioned first relevant information or Figure 11 as shown in (b) of , at the next transmission timing t(m), the SSBs numbered 3, 4, and 5 will be turned on (i.e., ON), while the other SSBs will be turned off (i.e., OFF).

[0050] As another example, when the second relevant information includes the measured signal quality of a specific SSB adjacent to the SSB that has not been used by the user equipment, the second information may include the SINR for this specific SSB. In this case, the network - side device can determine the SSB that has not been used by the user equipment and is adjacent to this specific SSB as the SSB to be used at the next transmission timing when the number of UEs reporting a SINR less than the SINR threshold is greater than the UE threshold. The SINR threshold and the UE threshold can be set based on the actual scenario. For each SSB, there may be multiple UEs interacting with it. Each of the multiple UEs can report the measured SINR for this SSB to the network - side device. When the number of UEs reporting a SINR less than the SINR threshold is greater than the UE threshold, it indicates that the signal quality of this SSB is poor at this time. In this case, the network - side device can determine to turn on the SSB adjacent to this SSB so that the UE can attempt to access this adjacent SSB, thereby improving the user signal quality.

[0051] As a further example, after the network - side device determines the SSB to be used at the next transmission timing according to the above - mentioned first relevant information and second relevant information, the network - side device can further determine whether to determine other un - turned - on SSBs as the SSBs to be used at the next transmission timing according to the method provided in this disclosure. As Figure 12As shown in (a) of , the network-side device determines the SSBs numbered 1, 5, and N-1 to be used at the next transmission timing t(m) based on the above first relevant information and second relevant information. In this case, in order to determine the effective coverage range of the network-side device, the SSB interval threshold for activation can be set to 2 in advance, which means that when the interval between the activated SSBs exceeds 2, the intermediate unactivated SSBs need to be activated. At this time, as Figure 12 As shown in (b) of , since the interval between the SSBs numbered 1 and 5 to be activated is greater than the above threshold 2, the unactivated SSB numbered 3 can be determined as the SSB to be used at the next transmission timing t(m). That is, the SSB numbered 3 is also activated at the next transmission timing t(m). Note that the above activation of the SSB numbered 3 is only an example. If the interval is too large, one or more previously undetermined SSBs in the middle can also be activated.

[0052] From the above example regarding the second relevant information, it can be seen that the method provided by the present disclosure can improve the signal quality and access success rate of the user by activating the SSBs adjacent to a specific SSB that have not been used by the user equipment, thereby bringing a good experience to the user.

[0053] In an example according to the present disclosure, the network-side device determining whether the SSBs that have not been used by the user equipment in the past time period are the SSBs to be used at the next transmission timing based on the second relevant information may include: the network-side device determining whether the SSBs that have not been used by the user equipment in the past time period are candidate SSBs to be used at the next transmission timing according to the second relevant information. The measured signal quality of the specific SSB adjacent to the SSB that has not been used by the user equipment may include: the reference signal received power (RSRP) of the SSBs in the SSB set of the network-side device and the RSRP of the SSBs in the SSB set of the adjacent network-side device. In this case, the network-side device may determine the SSB to be used at the next transmission timing from the candidate SSBs according to the RSRP of the SSBs in the SSB set of the network-side device and the RSRP of the SSBs in the SSB set of the adjacent network-side device included in the second relevant information. The above situation is to consider the interference problem between base stations (such as cells).

[0054] The SSBs determined as the SSBs to be used at the next transmission timing in combination with the second relevant information above can all be used as candidate SSBs to be used at the next transmission timing. However, considering the interference problem between base stations, the base station needs to further determine the SSB actually to be used at the next transmission timing from the candidate SSBs based on the above RSRP.

[0055] In the above situation, optionally, the base station may establish as Figure 13Use the shown table to determine the SSB to be used for the next transmission timing.

[0056] Figure 13 A schematic table showing the interference between the network-side device and adjacent network-side devices established by the network-side device according to an embodiment of the present disclosure is shown.

[0057] The network-side device can establish, as shown in Figure 13 the shown table, based on the reference signal received power (RSRP) of the SSBs in the SSB set of the network-side device included in the second related information and the RSRP of the SSBs in the SSB set of the adjacent network-side device. In Figure 13 the shown table, the top row can be for the serving base station, and the leftmost column can be for the adjacent base station. Figure 13 Three base stations are shown in

[0058] i.e., gNB#1, gNB#2, and gNB#3. Each base station has determined the SSB to be used for the next transmission timing, i.e., SSB#1, SSB#2, SSB#3, and SSB#4, according to the above-mentioned second related information.

[0059] Each cell in the table indicates the signal-to-interference ratio (SIR) between the base stations, which can be obtained by subtracting the RSRP of the adjacent base station from the RSRP of the serving base station. For example, it can be obtained through the following formula (1).

[0060] For example, for Figure 13 the cell marked 1310 in

[0061] RSRP_serving can represent the RSRP of SSB#2 for gNB#1, and RSRP_interference can represent the RSRP of SSB#3 for gNB#2. Since there may be multiple values for the measurement result of RSRP, the maximum value, minimum value, average value, x% percentile, etc. among the multiple values can be used as needed during actual calculation.

[0062] Example 1, when the SSB to be used at the next transmission timing by the network-side device causes significant interference to the SSB to be used at the next transmission timing determined by an adjacent network-side device based on the above first relevant information or second relevant information, such that the activation of the SSB to be used at the next transmission timing results in interference (e.g., SIR) to the SSB to be used at the next transmission timing determined by the adjacent network-side device based on the above first relevant information or second relevant information satisfying a predetermined condition (e.g., SIR is less than the first predetermined interference threshold), the SSB to be used at the next transmission timing is removed from the candidate SSBs, and the other non-removed SSBs are the SSBs to be used at the next transmission timing. The first predetermined interference threshold and the predetermined condition can be determined based on the actual usage. As Figure 13 shown in the cell marked 1320 in , gNB#2 (SSB#2) is the SSB to be used at the next transmission timing determined by an adjacent network-side device based on the above first relevant information, and gNB#1 (SSB#2) is the SSB to be used at the next transmission timing determined by the network-side device based on the above second relevant information. If the SIR of gNB#2 (SSB#2) < the first predetermined interference threshold, then gNB#1 (SSB#2) is removed, and the other non-removed SSBs are the candidate SSBs to be used at the next transmission timing.

[0063] Example 2, when the SSB to be used at the next transmission timing by the network-side device causes relatively large interference to the SSB determined by an adjacent network-side device based on the above second relevant information, such that the activation of the SSB to be used at the next transmission timing results in the number of SSBs whose SIR is less than the SIR threshold determined by the adjacent network-side device based on the above second relevant information being greater than a predetermined number threshold, the SSB to be used at the next transmission timing is removed from the candidate SSBs, and the other non-removed SSBs are the candidate SSBs to be used at the next transmission timing. The predetermined number threshold can be determined based on the actual usage. As Figure 13 shown in the 4 cells marked 1330 in , gNB#1 (SSB#3, SSB#4), gNB#2 (SSB#1, SSB#2) are the SSBs to be used at the next transmission timing determined by an adjacent network-side device based on the above second relevant information. gNB#3 (SSB#2) is the SSB to be used at the next transmission timing determined by the network-side device based on the above second relevant information. If the number of SSBs among gNB#1 (SSB#3, SSB#4), gNB#2 (SSB#1, SSB#2) whose SIR is less than the SIR threshold is greater than the predetermined number threshold 3, then gNB#3 (SSB#2) is removed, and the other non-removed SSBs are the candidate SSBs to be used at the next transmission timing.

[0064] Example 3. When the interference from an adjacent network-side device to the SSB to be used in the next transmission timing determined by the network-side device according to the above second relevant information is relatively large, such that the total interference from the SSB to be used in the next transmission timing determined by the adjacent network-side device according to the above first relevant information and second relevant information to the SSB to be used in the next transmission timing determined by the network-side device is greater than the second predetermined interference threshold, the network-side device removes the SSB to be used in the next transmission timing from the candidate SSBs, and the other non-removed SSBs are the candidate SSBs to be used in the next transmission timing. The second predetermined interference threshold may be determined based on the actual usage situation. For example Figure 13 In the 5 cells marked as shown by 1340 in Figure 13 , gNB#3 (SSB#2) is the SSB to be used in the next transmission timing determined by the network-side device according to the above second relevant information. If the total interference from the SSB determined by the adjacent network-side device according to the above first relevant information and second relevant information to gNB#3 (SSB#2) is greater than the above second predetermined interference threshold, then gNB#3 (SSB#2) is removed, and the other non-removed SSBs are the candidate SSBs to be used in the next transmission timing.

[0065] From the description of removing the SSB to be used in the next transmission timing and determining the other non-removed SSBs as the candidate SSBs to be used in the next transmission timing as described above in combination with Figure 13 it can be seen that the method provided in the present disclosure can further consider the interference problem between base stations, avoid the interference between base stations, and thus further improve the quality of serving users.

[0066] Referring again to Figure 5 , in step S520, the network-side device may send the determined SSB at the next transmission timing. As described above in combination with Figures 6 - 13 sending the determined SSB at the next transmission timing indicates that the SSB will be turned on at the next transmission timing to provide services for users.

[0067] From the above in combination with Figures 5 - 13As can be known from the method for wireless communication provided in the detailed description of the present disclosure at a network-side device, the method provided by the present disclosure can improve the accuracy of the SSB to be used at the next transmission timing, so as to be able to cope with the rapid changes of the UE and improve the system capacity. In addition, since the method provided by the present disclosure can also determine the candidate SSB to be used at the next transmission timing according to the measured signal quality of the SSB, the method provided by the present disclosure can also avoid interference between network-side devices and improve the SINR of the received signal. According to statistical experiments, the method provided by the present disclosure can use only 20% of the SSBs on a time scale of 960 ms, which means that 80% of the SSBs are turned off. In the prior art, on a one-day scale, 70% of the SSBs need to be used, which means that only 30% of the SSBs can be turned off in the prior art.

[0068] As described above in conjunction with Figures 1 - 13 a method for wireless communication provided by the present disclosure at a network-side device has been described. Next, a network-side device in the wireless communication network provided by the present disclosure will be described in conjunction with Figure 14 Since Figure 14 the network-side device 1400 shown corresponds to the method for wireless communication at a network-side device described above in conjunction with Figures 5 - 13 For the sake of simplicity, the detailed description of the same content is omitted here.

[0069] Figure 14 FIG. shows a block diagram of a network-side device 1400 in a wireless communication network according to an embodiment of the present disclosure.

[0070] Referring to Figure 14 , the network-side device 1400 may include a processing unit 1410 and a transmitting unit 1420. Although in this example, the network-side device 1400 is shown to include a processing unit 1410 and a transmitting unit 1420. However, it should be understood that the network-side device 1400 may also include other components. However, since these components are not related to the content of the embodiments of the present disclosure, their illustrations and descriptions are omitted here.

[0071] As an example, the network-side device 1400 may be a base station, such as the above-mentioned gNB. Alternatively, the network-side device 1400 may be the above-mentioned OAM module or SMO module that interacts with the base station outside the base station. In the case where the network-side device is the above-mentioned OAM or SMO module, the OAM or SMO module needs to transmit the determined SSB to be used at the next transmission timing to, for example, the base station for subsequent operations. Alternatively, the network-side device may also be an upper-layer node of the base station.

[0072] The processing unit 1410 may be configured to determine, according to information received from a user equipment and related to the usage of SSBs in a set of synchronization signal blocks (SSBs) during a past time period, an SSB in the set of SSBs to be used for the next transmission timing, where the past time period includes a plurality of transmission timings.

[0073] In an example according to the present disclosure, the information received from the user equipment and related to the usage of SSBs in the set of SSBs during the past time period includes at least one of: first related information about SSBs used by the user equipment during the past time period and second related information about SSBs not used by the user equipment during the past time period. Thus, the SSB to be used for the next transmission timing can be accurately determined according to the real-time usage of the user equipment, and further, the rapid changes of the user equipment can be coped with and the system capacity can be improved.

[0074] As an example, the past time period may include two transmission timings. As Figure 4 shown, at gNB 100A, the transmission timings when transmitting partial SSBs labeled ① and ②. As another example, the past time period may include N - 1 transmission timings, where N is a positive integer. As Figure 4 shown, at gNB 100B, the transmission timings when transmitting partial SSBs labeled ① to N - 1.

[0075] When the UE uses a certain SSB or the beam corresponding to the SSB to interact with the base station for data, the base station can obtain information related to the usage of the SSB based on the interactive data.

[0076] In an example according to the present disclosure, the first related information may include at least one of the following items: an SSB used by the user equipment at the transmission timing immediately adjacent to the next transmission timing during the past time period; the number of times a specific SSB is used by the user equipment during the past time period. In this case, the processing unit 1410 may determine, according to the first related information, whether an SSB used by the user equipment during the past time period is used as the SSB for the next transmission timing. In an example of the present disclosure, regarding the "number of times", when a specific SSB is used by a user equipment at one transmission timing, it is counted as one time.

[0077] As an example, in the case where the first related information includes an SSB used by the user equipment at the transmission timing immediately adjacent to the next transmission timing during the past time period, the processing unit 1410 may determine the SSB used by the user equipment at the transmission timing immediately adjacent to the next transmission timing during the past time period as the SSB to be used for the next transmission timing. As Figure 6As shown in (a) therein, the past time period may include two transmission timings, i.e., t(m - 1) and t(m - 2), where m is a positive integer. Among the SSBs numbered 1, 3, and N - 1 in the transmission timing t(m - 1) immediately adjacent to the next transmission timing t(m), they have been used by the UE. For example, for the transmission timing t(m - 1), the SSB numbered 1 has been used 2 times, which means 2 UEs have used this SSB. Another example, the SSB numbered N - 1 has been used 3 times, which means 3 UEs have used this SSB. Figure 6 In the above, OFF indicates being turned off, that is, the SSB is turned off within the past time period or at the next transmission timing. In the above case, the processing unit 1410 may determine the SSBs numbered 1, 3, and N - 1 that have been used by the UE as the SSBs to be used at the next transmission timing t(m) according to the first relevant information. For example, as Figure 6 shown in (b) therein, at the next transmission timing t(m), the SSBs numbered 1, 3, and N - 1 will be turned on (i.e., ON), while the other SSBs will be turned off (i.e., OFF).

[0078] As another example, when the first relevant information includes the number of times a specific SSB has been used by the user equipment in the past time period, the processing unit 1410 may determine the SSBs that have been used more than a first predetermined number of times as the SSBs to be used at the next transmission timing. This first predetermined number of times may be determined based on the actual usage scenario. As Figure 6 shown in (a) therein, the past time period may include two transmission timings, i.e., t(m - 1) and t(m - 2). At the transmission timing t(m - 2), the SSB numbered 1 has been used 1 time, the SSB numbered 2 has been used 0 times, the SSB numbered 3 has been used 1 time, and the SSB numbered N - 1 has been used 4 times. At the transmission timing t(m - 1), the SSB numbered 1 has been used 2 times, the SSB numbered 3 has been used 1 time, and the SSB numbered N - 1 has been used 2 times. It may be preset that the above first predetermined number of times is 2. Since the total number of times the SSBs numbered 1 and N - 1 have been used by the UE in the past time period both exceed 2 times, being 3 times and 6 times respectively, the network - side device may determine the SSBs numbered 1 and N - 1 that have been used by the UE as the SSBs to be used at the next transmission timing t(m) according to the first relevant information. For example Figure 6 shown in (c) therein, at the next transmission timing t(m), the SSBs numbered 1 and N - 1 will be turned on (i.e., ON), while the other SSBs will be turned off (i.e., OFF).

[0079] As another example, in the case where the first related information includes the SSBs used by the user equipment at the transmission timing immediately adjacent to the next transmission timing during the past time period, and the number of times a specific SSB has been used by the user equipment during the past time period, combining the above two examples, the network-side device may determine, based on the first related information, that the SSBs numbered 1, 3, and N-1 that have been used by the UE will be the SSBs to be used at the next transmission timing t(m). For example, combine Figure 6 the SSBs to be used determined in (b) and (c) in

[0080] As can be seen from the above three examples, the network-side device provided by the present disclosure may determine the SSBs that have been continuously used by the UE during the past time period to be continuously used at the next transmission timing, so as to consider the current network environment and continue to provide uninterrupted services to the UE, which can bring a good experience to the user.

[0081] According to another aspect of the present disclosure, in an example according to the present disclosure, the second related information includes at least one of the following items: the number of times a specific SSB adjacent to the SSB not used by the user equipment has been used by the user equipment, and the measured signal quality of a specific SSB adjacent to the SSB not used by the user equipment. In this case, the processing unit 1410 may determine, based on the second related information, whether the SSB not used by the user equipment during the past time period is to be the SSB to be used at the next transmission timing.

[0082] The following two examples are described in the case where the second related information includes the number of times a specific SSB adjacent to the SSB not used by the user equipment has been used by the user equipment.

[0083] Example 1, the number of times a specific SSB adjacent to the SSB not used by the user equipment has been used by the user equipment may include the number of times a specific SSB adjacent to the SSB not used by the user equipment has been used by the user equipment at the transmission timing immediately adjacent to the next transmission timing. In this case, the network-side device may determine the SSB not used by the user equipment to be the SSB to be used at the next transmission timing when the SSB adjacent to the SSB not used by the user equipment has been used by the user equipment more than a second predetermined number of times. The second predetermined number of times may be determined based on the actual usage scenario and may be the same as or different from the above first predetermined number of times. For example Figure 7As shown in (a) of [Figure], the specific SSB numbered 3 adjacent to the SSB numbered 4 that has not been used by the user equipment at the transmission timing t(m - 1) immediately adjacent to the next transmission timing t(m) has been used 4 times by the user equipment. The above-mentioned second predetermined number can be set to 3. In this case, the network-side device can determine that the SSBs numbered 2 and 4 will be the SSBs to be used at the next transmission timing t(m) according to the second relevant information. In addition, since the network-side device can determine that the SSB numbered 3 will be the SSB to be used at the next transmission timing t(m) according to the first relevant information mentioned above, as Figure 7 shown in (b) of [Figure], at the next transmission timing t(m), the SSBs numbered 2, 3, and 4 will be turned on (i.e., ON), while the other SSBs will be turned off (i.e., OFF).

[0084] Example 2, the number of times the specific SSB adjacent to the SSB not used by the user equipment is used by the user equipment can include the number of times the specific SSB adjacent to the SSB not used by the user equipment is used by the user equipment in the M transmission timings immediately adjacent to the next transmission timing within the past time period. As Figure 8 , Figure 9 and Figure 10 shown in (a) of [Figure].

[0085] The network-side device can determine the SSB not used by the user equipment as the SSB to be used at the next transmission timing when the average number of times the SSB adjacent to the SSB not used by the user equipment is used by the user equipment in the past time period exceeds a third predetermined number. The past time period can include two transmission timings. The third predetermined number can be determined based on the actual usage scenario and can be the same as or different from the above-mentioned first predetermined number or the above-mentioned second predetermined number. As Figure 8 shown in (a) of [Figure], the past time period can include two transmission timings, namely transmission timings t(m - 1) and t(m - 2). At the transmission timing t(m - 1), the SSB numbered 4 adjacent to the SSB numbered 5 that has not been used by the user equipment has been used 3 times by the user equipment. At the transmission timing t(m - 2), the SSB numbered 4 adjacent to the SSB numbered 5 that has not been used by the user equipment has been used 2 times by the user equipment. The third predetermined number can be set to 2. In this case, the network-side device can determine that the SSB numbered 5 will be the SSB to be used at the next transmission timing t(m) according to the second relevant information. In addition, since the network-side device can determine that the SSBs numbered 3 and 4 will be the SSBs to be used at the next transmission timing t(m) according to the first relevant information mentioned above, as Figure 8As shown in (b) thereof, at the next transmission timing t(m), the SSBs numbered 3, 4, and 5 will be turned on (i.e., ON), while the other SSBs will be turned off (i.e., OFF).

[0086] The network-side device may determine, when the value of the number of times the SSB adjacent to the SSB not used by the user equipment has been used by the user equipment in the past time period exceeds a fourth predetermined number of times, the SSB not used by the user equipment as the SSB to be used at the next transmission timing. The fourth predetermined number of times may be determined based on the actual usage scenario, and may be the same as or different from at least one of the above-mentioned first predetermined number of times, the above-mentioned second predetermined number of times, and the above-mentioned third predetermined number of times. As Figure 9 shown in (a) thereof, the past time period may include two transmission timings, i.e., transmission timings t(m - 1) and t(m - 2). At transmission timing t(m - 1), the SSB numbered 4 adjacent to the SSB numbered 5 not used by the user equipment was used by the user equipment 3 times. At transmission timing t(m - 2), the SSB numbered 4 adjacent to the SSB numbered 5 not used by the user equipment was used by the user equipment 0 times. The fourth predetermined number of times may be set to 2. In this case, the network-side device may determine, according to the second relevant information, that the SSB numbered 5 will be the SSB to be used at the next transmission timing t(m). In addition, since the network-side device may determine, according to the above-mentioned first relevant information, that the SSBs numbered 3 and 4 will be the SSBs to be used at the next transmission timing t(m), Figure 9 As shown in (b) thereof, at the next transmission timing t(m), the SSBs numbered 3, 4, and 5 will be turned on (i.e., ON), while the other SSBs will be turned off (i.e., OFF).

[0087] The network-side device may determine, when the number of times the SSB adjacent to the SSB not used by the user equipment has been used by the user equipment in the latter transmission timing within the past time period has increased by more than a fifth predetermined number of times compared to the number of times used by the user equipment in the previous transmission timing, the SSB not used by the user equipment as the SSB to be used at the next transmission timing. The fifth predetermined number of times may be determined based on the actual usage scenario, and may be the same as or different from at least one of the above-mentioned first predetermined number of times, the above-mentioned second predetermined number of times, the above-mentioned third predetermined number of times, and the above-mentioned fourth predetermined number of times. As Figure 10As shown in (a) of , the past time period may include three transmission timings, namely, transmission timings t(m - 1), t(m - 2), and t(m - 3). At transmission timing t(m - 1), the SSB numbered 4 adjacent to the SSB numbered 5 that has not been used by the user equipment is used by the user equipment 4 times. At transmission timing t(m - 2), the SSB numbered 4 adjacent to the SSB numbered 5 that has not been used by the user equipment is used by the user equipment 1 time. At transmission timing t(m - 3), the SSB numbered 4 adjacent to the SSB numbered 5 that has not been used by the user equipment is used by the user equipment 0 times. The above-mentioned fifth predetermined number of times may be set to 1. In this case, the network-side device may determine, according to the second relevant information, that the SSB numbered 5 will be the SSB to be used at the next transmission timing t(m). In addition, since the network-side device may determine, according to the above-mentioned first relevant information, that the SSBs numbered 3 and 4 will be the SSBs to be used at the next transmission timing t(m), so as shown in Figure 10 (b) of , at the next transmission timing t(m), the SSBs numbered 3, 4, and 5 will be turned on (i.e., ON), while the other SSBs will be turned off (i.e., OFF).

[0088] As an example, when the second relevant information includes the measured signal quality of a specific SSB adjacent to the SSB not used by the user equipment, the second relevant information may include the number of access failures of the specific SSB adjacent to the SSB not used by the user equipment within, for example, 2 transmission timings in the past time period. In this case, the network-side device may determine the SSB not used by the user equipment as the SSB to be used at the next transmission timing when the access failure of the SSB adjacent to the SSB not used by the user equipment exceeds the predetermined number of failure times. The predetermined number of failure times may be determined based on the actual usage scenario. As shown in Figure 11 (a) of , the past time period may include two transmission timings, namely, transmission timings t(m - 1) and t(m - 2). At transmission timing t(m - 1), the number of times the SSB numbered 4 adjacent to the SSB numbered 5 that has not been used by the user equipment fails to be accessed by the user equipment is 3 times. At transmission timing t(m - 2), the number of times the SSB numbered 4 adjacent to the SSB numbered 5 that has not been used by the user equipment fails to be accessed by the user equipment is 0 times. The predetermined number of failure times may be set to 2. In this case, the network-side device may determine, according to the second relevant information, that the SSB numbered 5 will be the SSB to be used at the next transmission timing t(m). In addition, since the network-side device may determine, according to the above-mentioned first relevant information or, that the SSBs numbered 3 and 4 will be the SSBs to be used at the next transmission timing t(m), so as shown in Figure 11As shown in (b) thereof, at the next transmission timing t(m), the SSBs numbered 3, 4, and 5 will be turned on (i.e., ON), while the other SSBs will be turned off (i.e., OFF).

[0089] As another example, in the case where the second related information includes the measured signal quality of a specific SSB adjacent to the SSB not used by the user equipment, the second information may include the SINR for this specific SSB. In this case, when the number of UEs reporting a SINR less than the SINR threshold is greater than the UE threshold, the network side device may determine the SSB not used by the user equipment adjacent to this specific SSB as the SSB to be used at the next transmission timing. The SINR threshold and the UE threshold may be set based on the actual scenario. For each SSB, there may be multiple UEs interacting therewith. Each UE among the multiple UEs may report to the network side device the measured SINR for this SSB. When the number of UEs reporting a SINR less than the SINR threshold is greater than the UE threshold, it indicates that the signal quality of this SSB is poor at this time. In this case, the network side device may determine to turn on the SSB adjacent to this SSB, so that the UE can attempt to access this adjacent SSB, thereby improving the user signal quality.

[0090] As a further example, after the network side device determines the SSB to be used at the next transmission timing according to the above first related information and second related information, it further determines whether to determine other unturned-on SSBs as the SSBs to be used at the next transmission timing. As Figure 12 shown in (a) thereof, the network side device determines the SSBs numbered 1, 5, and N - 1 to be used at the next transmission timing t(m) according to the above first related information and second related information. In this case, in order to determine the effective coverage range of the network side device, the turned-on SSB interval threshold may be set to 2 in advance, which means that when the interval between the turned-on SSBs exceeds 2, the intermediate unturned-on SSB needs to be turned on. At this time, as Figure 12 shown in (b) thereof, since the interval between the SSBs numbered 1 and 5 to be turned on is greater than the above threshold 2, the unturned-on SSB numbered 3 may be determined as the SSB to be used at the next transmission timing t(m). That is, the SSB numbered 3 will also be turned on at the next transmission timing t(m). Note that the above turning on of the SSB numbered 3 is only an example. If the interval is too large, one or more of the previously undetermined turned-on SSBs in the middle may also be turned on.

[0091] From the above examples regarding the second related information, it can be seen that the network side device provided by the present disclosure can turn on the SSB not used by the user equipment adjacent to a specific SSB to improve the user signal quality and access success rate, thereby bringing a good experience to the user.

[0092] In an example according to the present disclosure, the processing unit 1410 determining whether an SSB that has not been used by the user equipment in a past time period can be used as the SSB for the next transmission timing according to the second relevant information may include: the processing unit 1410 determining whether an SSB that has not been used by the user equipment in a past time period can be used as a candidate SSB for the next transmission timing according to the second relevant information. The measured signal quality of the specific SSB adjacent to the SSB that has not been used by the user equipment may include: the reference signal received power (RSRP) of the SSB in the SSB set of the network side device and the RSRP of the SSB in the SSB set of the adjacent network side device. In this case, the processing unit 1410 may determine the SSB to be used for the next transmission timing among the candidate SSBs according to the RSRP of the SSB in the SSB set of the network side device and the RSRP of the SSB in the SSB set of the adjacent network side device included in the second relevant information. The above situation is to consider the interference problem between base stations (such as cells).

[0093] All the SSBs determined as the SSBs to be used for the next transmission timing in combination with the second relevant information above can be used as candidate SSBs for the next transmission timing. However, considering the interference problem between base stations, the base station needs to further determine the SSB actually to be used for the next transmission timing from the candidate SSBs based on the above RSRP.

[0094] In the above case, optionally, the base station may establish a table as shown in Figure 13 to determine the SSB to be used for the next transmission timing.

[0095] Figure 13 FIG. shows a schematic table of the interference between the network side device and the adjacent network side device established by the network side device according to an embodiment of the present disclosure.

[0096] The network side device may establish a table as shown in Figure 13 according to the RSRP of the SSB in the SSB set of the network side device and the RSRP of the SSB in the SSB set of the adjacent network side device included in the second relevant information. In the table shown in Figure 13 , the top row may be for the serving base station, and the leftmost column may be for the adjacent base stations. Figure 13 Three base stations are shown in, namely, gNB#1, gNB#2, and gNB#3. Each base station has determined the SSB to be used for the next transmission timing according to the above second relevant information, namely, SSB#1, SSB#2, SSB#3, and SSB#4.

[0097] Each cell in the table indicates the Signal to Interference Ratio (SIR) between base stations, which can be obtained by subtracting the RSRP of adjacent base stations from the RSRP of the serving base station. For example, it is obtained through the following formula (1).

[0098] SIR = RSRP_serving - RSRP_interference (1)

[0099] For example, for Figure 13 the cell marked 1310, RSRP_serving can represent the RSRP of SSB#2 for gNB#1, and RSRP_interference can represent the RSRP of SSB#3 for gNB#2. Since there may be multiple values for the measurement result of RSRP, in actual calculation, the maximum value, minimum value, average value, x% percentile, etc. among these multiple values can be used as needed.

[0100] For the SSB to be used for the next transmission timing determined according to the above second related information, if the processing unit 1410 determines that the following one or more situations shown in the examples are satisfied based on the reference signal received power RSRP of the SSB in the SSB set of the network side device included in the second related information and the RSRP of the SSB in the SSB set of the adjacent network side device, the SSB to be used for the next transmission timing will be removed from the candidate SSBs, and the other non-removed SSBs are the SSBs to be used for the next transmission timing.

[0101] Example 1, the processing unit 1410 can remove the SSB to be used for the next transmission timing from the candidate SSBs when the interference of the SSB to be used for the next transmission timing on the SSB to be used for the next transmission timing determined by the adjacent network side device according to the above first related information or second related information is large, resulting in the interference (e.g., SIR) of the SSB to be used for the next transmission timing with the SSB to be used for the next transmission timing determined by the adjacent network side device according to the above first related information or second related information satisfying a predetermined condition (e.g., SIR is less than the first predetermined interference threshold). The first predetermined interference threshold and the predetermined condition can be determined based on the actual usage. Such as Figure 13For the cell marked 1320, gNB#2 (SSB#2) is the SSB to be used for the next transmission timing determined by the adjacent network side device according to the above first relevant information, and gNB#1 (SSB#2) is the SSB to be used for the next transmission timing determined by the network side device according to the above second relevant information. If the SIR of gNB#2 (SSB#2) < the first predetermined interference threshold, then gNB#1 (SSB#2) is removed, and the other non-removed SSBs are the candidate SSBs to be used for the next transmission timing.

[0102] Example 2, when the SSB to be used for the next transmission timing by the processing unit 1410 interferes greatly with the SSB determined by the adjacent network side device according to the above second relevant information, resulting in the number of SSBs whose SIR of the SSB determined by the adjacent network side device according to the above second relevant information is less than the SIR threshold when the SSB to be used for the next transmission timing is turned on being greater than the predetermined number threshold, the SSB to be used for the next transmission timing is removed from the candidate SSBs, and the other non-removed SSBs are the candidate SSBs to be used for the next transmission timing. The predetermined number threshold can be determined based on the actual usage. For example Figure 13 For the 4 cells marked 1330 as shown, gNB#1 (SSB#3, SSB#4), gNB#2 (SSB#1, SSB#2) are the SSBs to be used for the next transmission timing determined by the adjacent network side device according to the above second relevant information. gNB#3 (SSB#2) is the SSB to be used for the next transmission timing determined by the network side device according to the above second relevant information. If the number of SSBs with SIR less than the SIR threshold for gNB#1 (SSB#3, SSB#4), gNB#2 (SSB#1, SSB#2) is greater than the predetermined number threshold 3, then gNB#3 (SSB#2) is removed, and the other non-removed SSBs are the candidate SSBs to be used for the next transmission timing.

[0103] Example 3, when the SSB to be used for the next transmission timing determined according to the above second relevant information is interfered with greatly by the adjacent network side device, resulting in the total interference of the SSB to be used for the next transmission timing determined by the network side device by the SSBs to be used for the next transmission timing determined by the adjacent network side device according to the above first relevant information and the second relevant information being greater than the second predetermined interference threshold, the SSB to be used for the next transmission timing is removed from the candidate SSBs, and the other non-removed SSBs are the candidate SSBs to be used for the next transmission timing. The second predetermined interference threshold can be determined based on the actual usage. For example Figure 13The 5 cells marked as shown in 1340, and gNB#3 (SSB#2) is the SSB to be used for the next transmission timing determined by the network-side device according to the above second relevant information. If the total interference of gNB#3 (SSB#2) from adjacent network-side devices' SSBs determined according to the above first relevant information and second relevant information is greater than the above second predetermined interference threshold, then gNB#3 (SSB#2) is removed, and the other non-removed SSBs are the candidate SSBs to be used for the next transmission timing.

[0104] From the above combination Figure 13 of the description of removing the SSB to be used for the next transmission timing and determining the other non-removed SSBs as the candidate SSBs to be used for the next transmission timing, it can be seen that the network-side device provided by the present disclosure can further consider the interference problem between base stations, avoid the interference between base stations, and thus further improve the quality of serving users.

[0105] Referring again to Figure 14 , the sending unit 1420 can send the determined SSB at the next transmission timing. As described in the above combination Figures 6 - 13 , sending the determined SSB at the next transmission timing indicates that the SSB will be turned on at the next transmission timing to provide services for users.

[0106] From the network-side device provided by the present disclosure described in detail in the above combination Figures 6 - 14 , it can be known that the network-side device provided by the present disclosure can improve the accuracy of the SSB to be used for the next transmission timing determined, so as to be able to cope with the rapid changes of the UE and improve the system capacity. In addition, since the network-side device provided by the present disclosure can also determine the candidate SSB to be used for the next transmission timing according to the measured signal quality of the SSB, the network-side device provided by the present disclosure can also avoid the interference between network-side devices and improve the SINR of the received signal.

[0107] <Hardware Structure>

[0108] In addition, the block diagrams used for the description of the above embodiments represent blocks of functional units. These functional blocks (structural units) are implemented by any combination of at least one of hardware and software. In addition, the implementation methods of each functional block are not particularly limited. That is, each functional block can be implemented by using a device physically or logically combined, or two or more physically or logically separated devices can be directly or indirectly (e.g., using wired, wireless, etc.) connected and these multiple devices can be used to implement. The functional block can also be implemented by combining software in the above one device or the above multiple devices.

[0109] Functionally, although there are judgment, decision, determination, calculation, computation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, solution, selection, selection, establishment, comparison, assumption, expectation, consideration, broadcasting, notification, communication, forwarding, configuration, reconfiguration, allocation, mapping, assignment, etc., it is not limited thereto. For example, a functional block (structural unit) that enables transmission to function is called a transmitting unit or a transmitter. As described above, the implementation method is not particularly limited.

[0110] For example, a base station, a user terminal, etc. in an embodiment of the present disclosure can also function as a computer that performs the processing of the wireless communication method of the present disclosure. Figure 15 It is a diagram showing an example of the hardware structure of a network-side device according to an embodiment of the present disclosure. The above-mentioned network-side device (such as the above-mentioned network-side device 1400) can also be physically configured as a computer device including a processor 1501, a memory 1502, a storage 1503, a communication device 1504, an input device 1505, an output device 1506, a bus 1507, etc.

[0111] In addition, in the following description, terms such as "device" can be replaced with circuit, equipment, unit, etc. The hardware structure of the network-side device can be configured to include one or more of the devices shown in the figure, or can be configured not to include some of the devices.

[0112] Regarding each function in the network-side device, by reading a specific software (program) into hardware such as the processor 1501 and the memory 1502, the processor 1501 performs operations and controls at least one of communication based on the communication device 1504, or control of reading and writing of data in the memory 1502 and the storage 1503, thereby realizing it.

[0113] The processor 1501, for example, operates an operating system to control the entire computer. The processor 1501 can also be configured by a central processing device (central processing unit (CPU: Central Processing Unit)) including an interface with peripheral devices, a control device, an arithmetic device, a register, etc. For example, the transmitting unit, the processing unit, etc. of the above-mentioned network-side device can also be realized by the processor 1501.

[0114] In addition, the processor 1501 reads a program (program code), software module, data, etc. from at least one of the storage 1503 and the communication device 1504 into the memory 1502, and performs various processes according to them. As the program, a program that causes a computer to execute at least a part of the operations described in the above-described embodiments is used. For example, a processing unit or a control unit of a network-side device can also be implemented by a control program stored in the memory 1502 and operating in the processor 1501, and the same can be implemented for other functional blocks. Although it has been described that the above-described various processes are executed by one processor 1501, they can also be executed simultaneously or sequentially by two or more processors 1501. The processor 1501 can also be implemented by one or more chips. In addition, the program can also be transmitted from a network via an electrical communication line.

[0115] The memory 1502 can also be a computer-readable recording medium, and is constituted by, for example, at least one of a ROM (Read Only Memory), an EPROM (Erasable Programmable ROM), an EEPROM (Electrically Erasable Programmable ROM), a RAM (Random Access Memory), etc. The memory 1502 can also be referred to as a register, a cache, a main memory (main storage device), etc. The memory 1502 can store a program (program code), a software module, etc. that can be executed in order to implement the wireless communication method according to an embodiment of the present disclosure.

[0116] The storage 1503 can also be a computer-readable recording medium, and is constituted by, for example, at least one of an optical disc such as a CD-ROM (Compact Disc ROM), a hard disk drive, a flexible disk, an optical magnetic disk (for example, a compact disc, a digital versatile disc, a Blu-ray (registered trademark) disc), a smart card, a flash memory (for example, a card, a stick, a key drive), a Floppy (registered trademark) disk, a magnetic stripe, etc. The storage 1503 can also be referred to as an auxiliary storage device. The above-described recording medium can also be, for example, a database, a server, or other appropriate media including at least one of the memory 1502 and the storage 1503.

[0117] The communication device 1504 is hardware (a transmitting and receiving device) for performing communication between computers via at least one of a wired network and a wireless network, and is also referred to as, for example, a network device, a network controller, a network card, a communication module, etc. In order to implement, for example, at least one of frequency division duplex (FDD: Frequency Division Duplex) and time division duplex (TDD: Time Division Duplex), the communication device 1504 may also be configured to include a high-frequency switch, a duplexer, a filter, a frequency synthesizer, etc.

[0118] The input device 1505 is an input device (e.g., a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that accepts an input from the outside. The output device 1506 is an output device (e.g., a display, a speaker, an LED lamp, etc.) that performs an output to the outside. In addition, the input device 1505 and the output device 1506 may also be of an integrated structure (e.g., a touch panel).

[0119] In addition, each device such as the processor 1501 and the memory 1502 is connected by a bus 1507 for communicating information. The bus 1507 may be configured using a single bus or may be configured using different buses between each device.

[0120] In addition, the network-side device may also be configured to include hardware such as a microprocessor, a digital signal processor (DSP: Digital Signal Processor), an ASIC (Application Specific Integrated Circuit), a PLD (Programmable Logic Device), an FPGA (Field Programmable Gate Array), etc., and implement a part or all of each functional block by this hardware. For example, the processor 1501 may also be implemented using at least one of these hardwares.

[0121] <Variant Example>

[0122] In addition, in the present disclosure, the notification of information is not limited to the manners / embodiments described in the present disclosure, and other methods may also be used. For example, the notification of information may also be implemented through physical layer signaling (e.g., DCI (Downlink Control Information), UCI (Uplink Control Information)), high layer signaling (e.g., RRC (Radio Resource Control) signaling, MAC (Medium Access Control) signaling, broadcast information (MIB (Master Information Block), SIB (System Information Block))), other signals, or combinations thereof. In addition, the RRC signaling may also be referred to as an RRC message, and may also be, for example, an RRC Connection Setup message, an RRC Connection Reconfiguration message, etc.

[0123] Each mode / embodiment described in the present disclosure can also be applied to at least one of LTE (Long Term Evolution), LTE-A (LTE-Advanced), SUPER 3G, IMT-Advanced, 4G (4th generation mobile communication system), 5G (5th generation mobile communication system), 6th generation mobile communication system (6G), xth generation mobile communication system (xG) (x is an integer or a decimal, for example), FRA (Future Radio Access), NR (new Radio), New radio access (NX), Future generation radio access (FX), W-CDMA (registered trademark), GSM (registered trademark), CDMA2000, UMB (Ultra Mobile Broadband), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, UWB (Ultra-WideBand), Bluetooth (registered trademark), a system using other appropriate systems, and a next-generation system extended, modified, created, and defined based on them. In addition, multiple systems can also be combined (for example, a combination of at least one of LTE and LTE-A and 5G, etc.) and applied.

[0124] As long as there is no contradiction, the processing procedures, timings, flowcharts, etc. of each mode / embodiment described in the present disclosure can also be reordered. For example, for the methods described in the present disclosure, the elements of various steps are presented in an exemplary order and are not limited to the specific order presented.

[0125] In the present disclosure, a specific operation is assumed to be performed by a base station, and sometimes by its upper node according to circumstances. In a network composed of one or more network nodes having a base station, various operations for communicating with a terminal can obviously be performed by at least one of the base station and other network nodes other than the base station (for example, considering an MME or an S-GW, etc., but not limited thereto). In the above, the case where there is one other network node other than the base station is illustrated, but it can also be a combination of multiple other network nodes (for example, an MME and an S-GW).

[0126] Information, etc. (※ refer to the item of "information, signal") can be output from a higher layer (upper layer) (or a lower layer (lower layer)) to a lower layer (or a higher layer). It can also be input and output via multiple network nodes.

[0127] The information, etc. that is input and output can either be saved to a specific location (for example, a memory), or be managed using a management table. The information, etc. that is input and output can be overwritten, updated, or appended. The information, etc. that is output can also be deleted. The information, etc. that is input can also be sent to other devices.

[0128] The determination can be made either by a value represented by 1 bit (0 or 1), or by a true / false value (Boolean value: true or false), or by a numerical comparison (for example, comparison with a specific value).

[0129] Each mode / embodiment described in the present disclosure can be used alone, or in combination, or can be switched and used during execution. In addition, the notification of specific information (for example, the notification of "it is X") is not limited to being explicitly performed, and can also be performed in an implicit manner (for example, by not performing the notification of the specific information).

[0130] As described above, the present disclosure has been described in detail, but it is obvious to those skilled in the art that the present disclosure is not limited to the embodiments described in the present disclosure. Without departing from the gist and scope of the present invention determined by the description of the claims, the present disclosure can be implemented as modified and changed modes. Therefore, the description of the present disclosure is for illustrative purposes and has no restrictive meaning for the present disclosure.

[0131] In the present disclosure, whether software is called software, firmware, middleware, microcode, hardware description language, or by other names, it should be broadly interpreted as meaning instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, execution threads, processes, functions, etc.

[0132] In addition, software, instructions, information, etc. can also be transmitted and received via a transmission medium. For example, when software is transmitted from a website, server, or other remote source using at least one of wired technologies (coaxial cables, optical fibers, twisted pairs, digital subscriber line (DSL), etc.) and wireless technologies (infrared rays, microwaves, etc.), at least one of these wired technologies and wireless technologies is included in the definition of the transmission medium.

[0133] The information, signals, etc. described in this disclosure can also be represented using one of a variety of different technologies. For example, data, instructions, commands, information, signals, bits, symbols, chips, etc., which may be mentioned throughout the above description, can also be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, optical fields or photons, or any combination thereof.

[0134] In addition, for the terms described in this disclosure and the terms required for understanding this disclosure, they can also be replaced with terms having the same or similar meanings. For example, at least one of a channel and a symbol can also be a signal (signaling). In addition, a signal can also be a message. In addition, a component carrier (CC) can also be referred to as a carrier frequency, a cell, a frequency carrier, etc.

[0135] The terms "system" and "network" used in this disclosure are used interchangeably.

[0136] In addition, the information, parameters, etc. described in this disclosure can be represented using absolute values, relative values with respect to a specific value, or can also be represented using corresponding other information. For example, wireless resources can also be indicated by an index.

[0137] The names of the parameters used above are not restrictive names in all aspects. Furthermore, mathematical formulas, etc. using these parameters are sometimes different from those explicitly disclosed in this disclosure. Various channels (e.g., PUCCH, PDCCH, etc.) and information elements can be identified by any suitable name, and thus the various names assigned to these various channels and information elements are not restrictive names in all aspects.

[0138] In the present disclosure, terms such as "Base Station (BS)", "radio base station", "fixed station", "NodeB", "eNodeB (eNB)", "gNodeB (gNB)", "access point", "transmission point", "reception point", "transmission / reception point", "cell", "sector", "cell group", "carrier", "component carrier" can be used interchangeably. A base station is sometimes also referred to by terms such as macro cell, small cell, femto cell, pico cell, etc.

[0139] A base station can accommodate one or more (e.g., three) cells. In the case where a base station accommodates multiple cells, the overall coverage area of the base station can be divided into multiple smaller areas, and each smaller area can also provide communication services through a base station subsystem (e.g., a small indoor base station (Remote Radio Head (RRH))). Terms such as "cell" or "sector" refer to a part or the whole of the coverage area of at least one of the base station and the base station subsystem that provides communication services within that coverage range.

[0140] In the present disclosure, terms such as "Mobile Station (MS)", "user terminal", "user device (User Equipment (UE))", "terminal" can be used interchangeably.

[0141] A mobile station is sometimes also referred to by those skilled in the art as a subscriber station, mobile unit, subscriber unit, radio unit, remote unit, mobile device, radio device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client or several other appropriate terms.

[0142] At least one of the base station and the mobile station may also be referred to as a transmitting device, a receiving device, a communication device, etc. In addition, at least one of the base station and the mobile station may also be a device mounted on a moving body, the moving body itself, etc. The moving body is an object capable of moving, and the moving speed is arbitrary. Of course, it also includes the case where the moving body is stationary. The moving body includes, for example, vehicles, transport vehicles, automobiles, motorcycles, bicycles, connected cars, forklifts, bulldozers, wheel loaders, dump trucks, forklifts, trains, buses, trailers, rickshaws, ships (boats and other watercraft), airplanes, rockets, artificial satellites, drones (registered trademark), multicopters, quadcopters, balloons, and objects mounted on them, or is not limited thereto. In addition, the moving body may be a moving body that autonomously travels based on an operation instruction. It may be a means of transportation (e.g., a car, an airplane, etc.), a moving body that moves in an unmanned manner (e.g., a drone, an autonomous vehicle, etc.), or a robot (humanoid or non-humanoid). In addition, at least one of the base station and the mobile station also includes a device that does not necessarily move during communication operations. For example, at least one of the base station and the mobile station may also be an IoT (Internet of Things) device such as a sensor.

[0143] In addition, the base station in the present disclosure may also be interpreted as a user terminal. For example, for a structure in which communication between a base station and a user terminal is replaced by communication between multiple user terminals (e.g., may also be referred to as D2D (Device-to-Device), V2X (Vehicle-to-Everything), etc.), each mode / embodiment of the present disclosure may be applied. In this case, it may be configured such that the user terminal has the functions of the above-mentioned base station. In addition, terms such as "uplink" and "downlink" may also be replaced with terms corresponding to inter-terminal communication (e.g., "side"). For example, an uplink channel, a downlink channel, etc. may also be replaced with a side channel.

[0144] Similarly, the user terminal in the present disclosure may also be interpreted as a base station. In this case, it may be configured such that the base station has the functions of the above-mentioned user terminal.

[0145] As used in this disclosure, terms such as "determine" sometimes encompass a variety of operations. For example, "determine" can include operations such as judging, calculating, computing, processing, deriving, investigating, looking up (e.g., searching in a table, database, or other data structure), ascertaining, etc. as being "determined". Additionally, "determine" can include operations such as receiving (e.g., receiving information), transmitting (e.g., transmitting information), inputting, outputting, accessing (e.g., accessing data in a memory) as being "judged", "decided", etc. Moreover, "judge", "decide" can include operations such as resolving, selecting, choosing, establishing, comparing, etc. as being "judged", "decided". That is, "judge", "decide" can include considering certain operations as being "judged", "decided". Additionally, "judge (decide)" can also be replaced with "assuming", "expecting", "considering", etc.

[0146] As used in this disclosure, terms such as "connected", "coupled", or all of their variations mean all direct or indirect connections or couplings between two or more elements, and can include the case where there is one or more intermediate elements between the two elements that are "connected" or "coupled" to each other. The coupling or connection between elements can be physical, logical, or a combination of them. For example, "connected" can also be replaced with "accessed". In the context of this disclosure, it is possible to consider using one or more wires, cables, and at least one printed electrical connection, and as some non-limiting and non-inclusive examples, using wavelengths in the radio frequency domain, microwave domain, and optical (both visible and invisible light) domain.

[0147] As used in this disclosure, the recitation "based on" does not mean "only based on" unless otherwise explicitly stated. In other words, the recitation "based on" means both "only based on" and "at least based on".

[0148] Any reference to an element using terms such as "first", "second", etc. used in this disclosure does not comprehensively define the quantity or order of these elements. These terms can be used in this disclosure as a convenient method for distinguishing between more than two elements. Thus, the reference to the first and second elements does not mean that only two elements can be adopted, or that the first element must be prior to the second element in some form.

[0149] In this disclosure, the "unit" in the structure of each of the above devices may also be replaced with "circuit", "device", etc.

[0150] In this disclosure, when terms such as "include", "including" and their variants are used, these terms, like the term "comprising", are meant to be inclusive. Further, the term "or" used in this disclosure does not mean exclusive or.

[0151] The above has described this disclosure in detail, but for those skilled in the art, it is obvious that this disclosure is not limited to the embodiments described in this specification. This disclosure can be implemented in the form of modifications and changes without departing from the spirit and scope of this disclosure determined by the claims. Therefore, the description in this specification is for illustrative purposes and does not have any restrictive meaning for this disclosure.

Claims

1. A network-side device in a wireless communication network, comprising: A processing unit, configured to determine, according to information received from a user equipment and related to the usage of synchronization signal blocks (SSBs) in a set of SSBs during a past time period, an SSB in the set of SSBs to be used for the next transmission timing, where the past time period includes multiple transmission timings; And A sending unit, configured to send the determined SSB at the next transmission timing.

2. The network-side device according to claim 1, wherein, The information received from the user equipment and related to the usage of SSBs in the set of SSBs during the past time period includes at least one of: first related information of SSBs used by the user equipment during the past time period and second related information of SSBs not used by the user equipment during the past time period.

3. The network-side device according to claim 2, wherein The first related information includes at least one of the following items: An SSB used by the user equipment at a transmission timing immediately adjacent to the next transmission timing during the past time period; The number of times a specific SSB has been used by the user equipment during the past time period, The processing unit determines, according to the first related information, whether an SSB used by the user equipment during the past time period is an SSB to be used for the next transmission timing.

4. The network-side device according to claim 2, wherein The second related information includes at least one of the following items: The number of times a specific SSB adjacent to the SSB not used by the user equipment has been used by the user equipment, and The measured signal quality of a specific SSB adjacent to the SSB not used by the user equipment, The processing unit determines, according to the second related information, whether an SSB not used by the user equipment during the past time period is an SSB to be used for the next transmission timing.

5. The network-side device according to claim 4, wherein The processing unit determining, according to the second related information, whether an SSB not used by the user equipment during the past time period is an SSB to be used for the next transmission timing includes: The processing unit determines, according to the second related information, whether an SSB not used by the user equipment during the past time period is a candidate SSB to be used for the next transmission timing, The measured signal quality of a specific SSB adjacent to the SSB not used by the user equipment includes: the reference signal received power (RSRP) of an SSB in the set of SSBs of the network-side device and the RSRP of an SSB in the set of SSBs of an adjacent network-side device, The processing unit, configured to determine, according to the RSRP of an SSB in the set of SSBs of the network-side device and the RSRP of an SSB in the set of SSBs of an adjacent network-side device included in the second related information, an SSB to be used for the next transmission timing among the candidate SSBs.

6. A method for wireless communication at a network-side device, comprising: Determine an SSB in the set of synchronization signal blocks (SSBs) to be used for the next transmission timing based on information received from a user equipment and related to the usage of SSBs in the set of SSBs during a past time period, where the past time period includes a plurality of transmission timings; and Transmit the determined SSB at the next transmission timing.

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