CN114641083A

CN114641083A - SSB communication processing method and related equipment

Info

Publication number: CN114641083A
Application number: CN202210130359.5A
Authority: CN
Inventors: 张战战; 铁晓磊; 周涵; 黄雯雯; 花梦
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2022-02-11
Filing date: 2022-02-11
Publication date: 2022-06-17

Abstract

The embodiment of the application provides various communication processing methods related to SSB. In one of the communication processing methods, the terminal side device is configured with NCD-SSB candidate resources in advance, receives NCD-SSB from available candidate resources indicated in the NCD-SSB candidate resources at the access network side device, and performs random access again according to the received NCD-SSB if random access failure occurs. The method is favorable for reducing the switching of the terminal side equipment between frequency bands by configuring available NCD-SSB candidate resources for the current initial downlink BWP and detecting the NCD-SSB in the current initial downlink BWP without switching to other downlink BWPs to detect the CD-SSB, thereby reducing the resource overhead of the communication system.

Description

SSB communication processing method and related equipment

Technical Field

The embodiment of the application relates to the field of wireless communication, in particular to a related technology of a Synchronization Signal-Physical Broadcast Channel (PBCH) block (SSB).

Background

The wireless communication system includes a terminal-side device, an access network-side device serving the terminal-side device, and a core network system. According to protocol layer division established by the 3rd generation partnership project (3 GPP) organization, the terminal side device interacts with the access network side device through an Access Stratum (AS), and the terminal side device interacts with the core network system through a Non-access stratum (NAS). Wherein the access stratum comprises: a Physical (PHY) layer, a Medium Access Control (MAC) layer, a Radio Link Control (RLC) layer, a Packet Data Convergence (PDCP) layer, a Radio Resource Control (RRC) layer, and an optional Service Data Adaptation (SDAP) layer.

The terminal-side device may obtain a configuration of an initial bandwidth part (BWP) by receiving a Master Information Block (MIB) or a System Information Block (SIB) sent by the access network-side device, where the configuration of the initial BWP includes a configuration of an initial uplink BWP and a configuration of an initial downlink BWP. The initial downlink BWP may not include a cell-defining CD-SSB (cell-defining) therein, so that the terminal-side device needs to switch the radio frequency module to another downlink BWP with a CD-SSB to detect a CD-SSB and then switch back to the initial BWP to ensure the subsequent communication on the initial BWP, which is not favorable for reducing power consumption and latency of the terminal-side device, thereby resulting in an increase in resource overhead of the communication system.

Disclosure of Invention

The embodiment of the application provides a secure communication method to reduce the resource overhead of a communication system. The terminal-side device in the embodiment of the present application may be an independent sold terminal complete machine itself, or at least one chip in the independent sold terminal complete machine or a circuit system in the terminal complete machine for implementing the communication method. The access network side device serving the terminal side device may be an independent base station, or may be at least one chip in the base station or a functional module in the base station that implements the communication processing method, for example, a Distributed Unit (DU) or a Central Unit (CU) of the base station.

A first aspect of the embodiments of the present application provides a communication processing method for an SSB, where the communication processing method is executed by a terminal-side device. The communication processing method comprises the following steps.

A terminal side device receives configuration information sent by an access network side device, wherein the configuration information is used for configuring an initial downlink BWP, and the initial downlink BWP is configured with a random access search space but does not include configured CD-SSB;

the terminal side equipment receives first information sent by the access network side equipment, and the first information configures at least one non-cell-defined NCD-SSB candidate resource on the initial downlink BWP;

the terminal side equipment initiates a first random access, and monitors and schedules a PDCCH (physical Downlink control channel) of a random access response of the first random access in a random access search space;

the terminal side equipment acquires second information from the access network side equipment; wherein the second information indicates available NCD-SSB candidate resources among the at least one NCD-SSB candidate resources;

and the terminal side equipment receives the NCD-SSB on the available NCD-SSB candidate resources and initiates a second random access according to the received NCD-SSB after the first random access fails.

By applying the technical scheme provided by the first aspect, since the terminal side device is configured with the NCD-SSB candidate resource in advance, the NCD-SSB is received at the access network side device from the available resource candidate indicated in the NCD-SSB candidate resource, and thus the random access is performed according to the received NCD-SSB after the random access fails. By configuring the NCD-SSB for the current initial downlink BWP, the NCD-SSB is detected at the current initial downlink BWP without switching to other downlink BWP detection CD-SSB, which is beneficial to reducing power consumption and interruption of the terminal-side device, thereby reducing resource overhead of the communication system.

In one possible implementation manner, the second information is carried in a master information block or a system information block sent by the access network side device. The main information block and the system information block are indicated to the terminal side equipment in a broadcasting mode, so that additional terminal-specific signaling is not needed, and the system overhead can be saved.

In one possible implementation manner, the second information is carried in a physical downlink control channel PDSCH carrying a random access response of the first random access, or the second information is carried in a PDCCH for scheduling the PDSCH.

In a possible implementation manner, the acquiring, by the terminal-side device, the second information from the access network-side device includes: the terminal side equipment receives a paging PDCCH, wherein the paging PDCCH carries the second information or a PDSCH scheduled by the paging PDCCH carries the second information; wherein the initiating, by the terminal side device, the first random access includes: and under the condition that the terminal side equipment is determined to be paged according to the paging PDCCH, the terminal side equipment initiates the first random access.

In a possible implementation manner, the acquiring, by the terminal-side device, the second information from the access network-side device includes: the terminal side equipment monitors the awakening PDCCH; the wake-up PDCCH carries the second information and a paging advance indication, wherein the paging advance indication is used for indicating whether the terminal side equipment is woken up to monitor the paging PDCCH at a monitoring occasion of the paging PDCCH;

wherein the initiating, by the terminal side device, the first random access includes: and under the condition that the terminal side equipment is determined to be paged according to the paging PDCCH, the terminal side equipment initiates the first random access.

And when the terminal side equipment needs to communicate, dynamically indicating the second information to the terminal side equipment through a signaling in a random access process or a paging process, so that the terminal side equipment can timely acquire the available state of the NCD-SSB.

A second aspect of the embodiments of the present application provides another communication processing method for an SSB, where the method includes the following steps.

A terminal side device receives first configuration information and second configuration information sent by an access network side device, wherein the first configuration information is used for configuring a first initial downlink BWP, and the second configuration information is used for configuring a second initial downlink BWP; wherein the first initial downlink BWP comprises a CD-SSB and a configured paging advance indication search space; the second initial downlink BWP is configured with a paging search space, but does not include a CD-SSB;

the terminal side equipment receives the CD-SSB on the first initial downlink BWP, and monitors a wake-up PDCCH in a paging advance indication search space according to the received CD-SSB, wherein the wake-up PDCCH carries a paging advance indication which is used for indicating whether the terminal side equipment is woken up to detect the paging PDCCH at a monitoring opportunity of the paging PDCCH in the paging search space;

if the paging advance indication indicates that the terminal-side device is awake, the terminal-side device wakes up and determines that a non-cell-defined NCD-SSB exists on the initial downlink BWP;

the terminal side device receiving the NCD-SSB on the second initial downlink BWP;

and the terminal side equipment monitors the paging PDCCH in the paging search space according to the received NCD-SSB.

By applying the technical scheme provided by the second aspect of the embodiment of the present application, the terminal side device determines the existence of the NCD-SSB if the terminal side device is awakened, and further receives the NCD-SSB for subsequent communication, so that the communication system can purposefully transmit the NCD-SSB according to actual requirements, thereby reducing resource overhead of the communication system.

A third aspect of the present application provides another communication processing method for an SSB, which includes the following.

The method comprises the steps that a terminal side device receives configuration information sent by an access network side device, wherein the configuration information is used for configuring an initial downlink BWP, the initial downlink BWP is configured with a paging advanced indication search space and a paging search space, but does not comprise a cell definition CD-SSB; before the monitoring time of the awakening PDCCH on the paging advance indication search space arrives, the terminal side equipment detects NCD-SSB on the configured NCD-SSB candidate resource, wherein the awakening PDCCH carries a paging advance indication which is used for indicating whether the terminal side equipment is awakened to monitor the paging PDCCH at the monitoring time of the paging PDCCH;

and if the NCD-SSB is detected, the terminal side equipment monitors the awakening PDCCH at the monitoring opportunity of the awakening PDCCH.

By applying the technical scheme provided by the third aspect, the terminal side device detects the existence of the NCD-SSB before the monitoring time for waking up the PDCCH comes, and further confirms the monitoring of the waking-up PDCCH, so that the communication system can purposefully transmit the NCD-SSB according to the actual requirement, and the resource overhead of the communication system is reduced.

In a possible implementation manner, the candidate resources of the NCD-SSB are located in a time window before the monitoring occasion of the wake-up PDCCH, where the time window is a time period configured by an access network side device and associated with the monitoring occasion of the wake-up PDCCH, or the time window is a time period consisting of 1 or more NCD-SSB candidate resource periods closest to the monitoring occasion of the wake-up PDCCH. By this way, the terminal side device can relatively accurately acquire whether the wake-up PDCCH exists compared with a time window far away from the monitoring occasion.

In one possible implementation, the wake-up PDCCH is also used to indicate whether there are other NCD-SSBs available; and the candidate resource where the other NCD-SSB is located and the candidate resource where the NCD-SSB is located belong to the same periodic resource. In this way, available NCD-SSBs can be explicitly indicated by waking up the PDCCH, so that the terminal-side device purposefully performs measurements.

In one possible implementation, the method further includes: and if the NCD-SSB is not detected, the terminal side equipment determines not to monitor the wake-up PDCCH. By the method, the terminal side equipment does not need to monitor the awakening PDCCH and the paging PDCCH, keeps the RRC non-connected state and achieves the purpose of saving power consumption.

A fourth aspect of the embodiments of the present application provides a communication processing method for an SSB, where the method includes the following steps.

The method comprises the steps that an access network side device sends configuration information to a terminal side device, wherein the configuration information is used for configuring an initial downlink BWP, and the initial downlink BWP is configured with a random access search space and does not include a CD-SSB; the access network side equipment sends first information to the terminal side equipment, and the first information configures at least one NCD-SSB candidate resource on the initial downlink BWP; the access network side device sends second information to the terminal side device, wherein the second information indicates available NCD-SSB candidate resources in the at least one NCD-SSB candidate resource; and the access network side equipment transmits NCD-SSB on the available NCD-SSB candidate resources.

By applying the technical solution provided by the fourth aspect, the access network-side device pre-configures NCD-SSB candidate resources for the terminal-side device, and sends NCD-SSB from available resource candidates indicated in the NCD-SSB candidate resources, so that the terminal-side device can detect NCD-SSB at the current initial downlink BWP without switching to other downlink BWPs to detect CD-SSB, thereby reducing resource overhead of the communication system.

In one possible implementation, the method further includes: the access network side equipment receives a random access lead code sent by the terminal side equipment for the first random access;

wherein, the sending, by the access network side device, the second information to the terminal side device includes:

the access network side equipment sends a PDCCH for scheduling a PDSCH to the terminal side equipment, wherein the PDSCH bears a random access response of the first random access; the second information is carried in the PDCCH or carried in the PDSCH.

In a possible implementation manner, the sending, by the access network-side device, the second information to the terminal-side device includes:

and the access network side equipment transmits a paging PDCCH to the terminal side equipment, wherein the paging PDCCH carries the second information or a PDSCH scheduled by the paging PDCCH carries the second information.

and the access network side equipment sends a wake-up PDCCH to the terminal side equipment, wherein the wake-up PDCCH carries the second information and a paging advance indication, and the paging advance indication is used for indicating whether the terminal side equipment is woken up to monitor the paging PDCCH at a monitoring opportunity of the paging PDCCH.

When the terminal side equipment needs to communicate, the PDCCH is dynamically sent, and the second information is dynamically indicated to the terminal side equipment through a signaling in a random access process or a paging process, so that the terminal side equipment can timely acquire the available state of the NCD-SSB.

A fifth aspect of the embodiments of the present application provides a method for processing communications regarding an SSB, where the method includes the following steps.

An access network side device sends first configuration information and second configuration information to a terminal side device, wherein the first configuration information is used for configuring a first initial downlink bandwidth part BWP, and the second configuration information is used for configuring a second initial downlink BWP, wherein the first initial downlink BWP comprises a synchronization signal-physical broadcast channel block (CD-SSB) of a cell definition CD and a configured paging advance indication search space, and the second initial downlink BWP is configured with a paging search space but CD-SSB;

the access network side equipment sends a wake-up PDCCH in the paging advance indication search space, wherein the wake-up PDCCH carries a paging advance indication which is used for indicating whether the terminal side equipment is woken up to monitor the paging PDCCH at the monitoring time of the paging PDCCH;

and under the condition that the equipment on the access network side determines to wake up the equipment on the terminal side through the wake-up PDCCH, the equipment on the access network side sends non-cell-defined NCD-SSB on the second initial downlink BWP and sends the paging PDCCH in the paging search space.

By applying the technical scheme provided by the fifth aspect, the access network side device determines to wake up the terminal side device to send the NCD-SSB, so that the communication system can purposefully transmit the NCD-SSB according to actual requirements, thereby reducing resource overhead of the communication system.

In one possible implementation manner, in a case that the access network-side device determines not to wake up the terminal-side device through a wake-up PDCCH, the access network-side device determines not to send the NCD-SSB on the second initial downlink BWP.

A sixth aspect of the embodiments of the present application provides a communication processing method for SSB, where the method includes the following.

The method comprises the steps that an access network side device sends configuration information to a terminal side device, wherein the configuration information is used for configuring an initial downlink bandwidth part BWP, the initial downlink BWP is configured with a paging advanced indication search space and a paging search space, but does not comprise CD-SSB;

the access network side equipment determines whether the monitoring opportunity of the awakening PDCCH in the paging advanced indication search space is transmitted or not; the wake-up PDCCH carries a paging advance indication, wherein the paging advance indication is used for indicating whether the terminal side equipment is woken up to monitor the paging PDCCH at a monitoring occasion of the paging PDCCH;

if the awakening PDCCH is determined to be sent at the monitoring time of the awakening PDCCH, the access network side equipment sends NCD-SSB before the monitoring time of the awakening PDCCH arrives;

and the access network side equipment sends the awakening PDCCH at the monitoring opportunity of the awakening PDCCH.

By applying the technical scheme provided by the sixth aspect, the access network side device sends the NCD-SSB before waking up the monitoring opportunity of the PDCCH after confirming that the terminal side device is woken up, so that the NCD-SSB can be purposefully transmitted by the communication system according to actual needs, and resource overhead of the communication system is reduced.

In one possible implementation manner, if it is determined that the wake-up PDCCH is not transmitted at the monitoring occasion of the wake-up PDCCH, the access network side device determines not to transmit the NCD-SSB before the monitoring occasion of the wake-up PDCCH arrives.

In a possible implementation manner, the NCD-SSB is located in a time window before the monitoring occasion of the wake-up PDCCH, where the time window is a time period configured by an access network side device and associated with the monitoring occasion of the wake-up PDCCH, or the time window is a time period consisting of 1 or more NCD-SSB cycles closest to the monitoring occasion of the wake-up PDCCH. By this way, the terminal side device can relatively accurately acquire whether the wake-up PDCCH exists compared with a time window far away from the monitoring occasion.

A seventh aspect of the present embodiment provides a terminal-side device, where the terminal-side device includes: a transceiving unit and a processing unit. The transceiver unit may be divided into a receiving unit and a transmitting unit, the transceiver unit is configured to perform receiving and transmitting actions of any one of the first aspect, the second aspect and each possible implementation manner, and the processing unit is configured to perform processing actions such as determining and acquiring actions of any one of the first aspect, the second aspect and each possible implementation manner. In a specific physical implementation, the transceiving unit may be a transceiving circuit or a transceiver, may include a receiver and a transmitter, and the processing unit may be a processing circuit or a processor. Optionally, the terminal-side device may be a terminal device sold independently, or may also be a chip or a certain circuit system in the terminal device, where the chip or the circuit system includes a plurality of gate circuits to implement the functions of the foregoing functional units. The communication device provided in the seventh aspect may achieve the beneficial effects achieved by any one of the foregoing first aspect, second aspect, third aspect, and various possible implementation manners, and details are not repeated herein.

An eighth aspect of the embodiments of the present application provides an access network side device, where the access network side device includes: the device comprises a sending unit, a processing unit and a receiving unit. The sending unit and the receiving unit are respectively configured to execute sending and receiving actions in any one of the fourth aspect, the fifth aspect, the sixth aspect and each possible implementation manner, and the processing unit is configured to execute processing actions such as determining and acquiring actions in any one of the fourth aspect, the fifth aspect, the sixth aspect and each possible implementation manner. In a specific physical implementation, the transmitting unit may be a transmitter and the receiving unit may be a receiver. Optionally, the access network-side device may be a base station sold independently, may also be a hardware entity in which the base station is split, such as a Distributed Unit (DU) or a Central Unit (CU), and may also be a chip or a circuit system in the base station, where the chip or the circuit system includes a plurality of gates to implement the functions of the foregoing functional units. The access network side device provided in the eighth aspect may implement the beneficial effects achieved by any one of the foregoing fourth aspect, fifth aspect, sixth aspect, and various possible implementation manners, and is not specifically described again.

A ninth aspect of the present embodiment provides a communication processing apparatus, including a processor and a memory, where the memory stores a computer program, and the computer program, when called by the processor, causes the communication processing apparatus to implement the method according to any one of the first aspect, the second aspect, the third aspect, the fourth aspect, the fifth aspect, the sixth aspect, and various possible implementation manners thereof. Alternatively, the communication processing apparatus provided in the ninth aspect may be the chip system itself, or may be a stand-alone device including the chip system.

A tenth aspect of embodiments of the present application provides a computer-readable storage medium, where a computer program is stored, where the computer program is called by a computer to implement the method according to any one of the first aspect, the second aspect, the third aspect, the fourth aspect, the fifth aspect, the sixth aspect, and their respective possible implementation manners. The computer-readable storage medium provided by the tenth aspect may be embodied in a system-on-chip or may comprise a stand-alone device of the system-on-chip.

An eleventh aspect of embodiments of the present application provides a computer program product, which, when invoked by the computer, includes a method according to any one of the first aspect, the second aspect, the third aspect, the fourth aspect, the fifth aspect, the sixth aspect, and their respective possible implementations. The computer program product provided by the ninth aspect, which may be computer software code, may be comprised in a system-on-chip or in a stand-alone device comprising said system-on-chip.

Drawings

Fig. 1 is a schematic architecture diagram of a communication system according to an embodiment of the present application;

fig. 2 is a schematic diagram of time-frequency resource distribution of an SSB according to an embodiment of the present application;

fig. 3A to fig. 3F are schematic interaction diagrams of a communication processing method related to SSB according to an embodiment of the present application;

fig. 4A to fig. 4B are schematic interaction diagrams of another communication processing method related to an SSB according to an embodiment of the present application;

fig. 5A to fig. 5C are schematic interaction diagrams of a further communication processing method related to SSB according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of a unit of a communication processing apparatus according to an embodiment of the present application;

fig. 7 is a schematic physical structure diagram of a communication processing apparatus according to an embodiment of the present disclosure.

Detailed Description

The communication system shown in fig. 1 includes a terminal-side device, an access network-side device, and a core network system. The access network side device may be a base station, a wireless local area network access point, a relay node, and various Transmission Reception Point (TRP), and provides an access service in an authorized spectrum or an access service in an unauthorized spectrum for the terminal side device. And the access network side equipment is connected to the core network system in a wired or wireless mode. The terminal side device includes a User Equipment (UE), which is a device providing voice and/or data connectivity to a User, for example, a handheld device, a vehicle-mounted device, and the like having a wireless connection function. Common terminal-side devices include, for example: mobile phones, tablet computers, notebook computers, palm computers, Mobile Internet Devices (MID), wearable devices, such as smart watches, smart bands, pedometers, and various user devices in virtual reality technologies. The terminal side equipment can provide communication service by one access network side equipment, and also can provide communication service by at least two access network side equipment simultaneously by using a dual connection technology.

And the terminal side equipment and the access network side equipment respectively transmit uplink data and downlink data on an air interface according to a protocol layer on an uplink and a downlink. In terms of physical implementation, the access network side device may be a base station, a wireless local area network access point, or the like, or may be a chip or a circuit system in the base station or the wireless local area network access point; the terminal side device may be the user device itself, or a chip or circuitry in the user device. The access network side device may be an independent device, or may be split into different devices according to a protocol layer. For example, after the access network-side device is split according to the protocol layer, the access network-side device may include a Central Unit (CU) and at least one Distributed Unit (DU). The CU is used for realizing the functions of a PDCP layer, an RRC layer and protocol layers above the PDCP layer and the RRC layer of the access network side equipment; the DU is used to implement the functions of the RLC layer, the MAC layer, and the PHY layer of the access network side device. Those skilled in the art will understand that: for each implementation, the access network side device is in a PDCP layer, and the functions of an RRC layer or above may be performed by the CU; for the access network side device at the RLC layer, the function of the MAC layer or the PHY layer is performed by the at least one DU. Therefore, in the following embodiments, messages in the PDCP layer, the RRC layer, and protocol layers above the PDCP layer may be generated by CUs, messages in the RLC layer, the MAC layer, or the PHY layer may be generated by DUs, and the CUs and the DUs may interact with each other through an F1 interface.

The communication system shown in fig. 1 may be connected to the internet in a wired or wireless manner, wherein the internet includes application servers that provide various content services (e.g., multimedia movies, music). The terminal side device can perform data transmission through application layer functions corresponding to the application servers through the application layer, wherein the application layer functions are also called application programs. The communication system shown in fig. 1 may be a New Radio (NR) system (also referred to as a 5G system), an LTE (long term evolution, LTE), an advanced long term evolution (LTE-a) system, and other wireless communication systems. These wireless communication systems may be frequency division multiplexed systems or time division multiplexed systems.

The operating carrier frequencies of NR systems mainly use two types: frequency ranges 1(FR 1) and FR 2. Wherein, the frequency range of FR1 is 450MHz to 6GHz, also called sub 6GHz, low frequency; FR2 has a frequency in the range of 24.25GHz to 52.6GHz and is commonly referred to as millimeter wave or high frequency.

In the above communication system, the function of the PHY layer is realized by the physical layer channel. Common physical layer channels include a Physical Broadcast Channel (PBCH), a Physical Uplink Control Channel (PUCCH), a Physical Downlink Control Channel (PDCCH), a Physical Uplink Shared Channel (PUSCH), and a Physical Downlink Shared Channel (PDSCH). The transmission of the PUSCH and the transmission of the PDSCH may be achieved through scheduling of the PDCCH, that is, the PDCCH indicates a transmission resource location of the PUSCH or the PDSCH.

Information such as a frequency band occupied by the PDCCH in a frequency domain and a number of symbols (e.g., Orthogonal Frequency Division Multiplexing (OFDM) symbols) occupied in a time domain is encapsulated in a control resource set (core), and information such as a symbol number index of a PDCCH start and a PDCCH monitoring period is encapsulated in a Search Space (SS). Thus, the configuration of the PDCCH includes the configuration of a search space and the configuration of CORESET. The PDCCH candidate resource monitored by the terminal side equipment is determined by the configuration of the CORESET and the configuration of the search space.

In NR systems, a bandwidth part (BWP) is a frequency range on one carrier for a given subcarrier spacing. One BWP may be configured with at least one control resource set. One control resource set includes time-frequency resources; wherein the control resource set in the frequency domain includes one or more subbands in one wideband or one wideband; the set of control resources in the time domain includes one or more OFDM symbols. One control resource set includes frequency domain resources that may be continuous or discontinuous, where the unit of the frequency domain resources is a Resource Block (RB), and one RB includes 12 subcarriers. One RB is a frequency range of 180KHz when the subcarrier spacing is 15 kHz.

One or more search spaces constitute a set of search spaces. The search space and search space set terms are interchangeable without specific recitation.

The PDCCH carries Downlink Control Information (DCI). DCI formats of different functions are scrambled by different radio network temporary identifications. For example, a DCI format of a PDCCH for scheduling a paging message is scrambled by a P-RNTI (such PDCCH is referred to as a paging PDCCH for short), and a DCI format of a PDCCH for scheduling a random access response is scrambled by a Radio Network Temporary Identifier (RNTI) corresponding to a random access, where the random access response is carried in a Physical Downlink Shared Channel (PDSCH) scheduled by the PDCCH, the random access includes two types of 4-step random access and 2-step random access, and the RNTI corresponding to the random access includes a 4-step random access RNTI (generally denoted as RA-RNTI) and a 2-step random access RNTI (generally denoted as MsgB-RNTI).

In one time slot of the NR physical layer, a Primary Synchronization Signal (PSS), a Secondary Synchronization Signal (SSS), a demodulation reference Signal (DRMS) of the PBCH and the PBCH are packed into one block for transmission, which is called SSB. As shown in fig. 2, one SSB occupies 4 consecutive symbols (e.g., symbol 0 to symbol 3) in the time domain and 20 consecutive Resource Blocks (RBs) in the frequency domain, each resource block being 12 subcarriers. The first symbol (e.g., symbol 0) is PSS, the third symbol (symbol 2) is SSS, and both PSS and SSS occupy 127 subcarriers. The PBCH is distributed in the 2 nd to 4 th symbols (symbol 1 to symbol 3) of the SSB in the time domain, occupies 240 subcarriers in the frequency domain, and occupies a Resource Element (RE) unused by the SSS in the 3rd symbol. The frequency domain bandwidth sizes of SSBs at different subcarrier spacings are shown in table 1.

TABLE 1

SSB subcarrier spacing (Kilohertz KHz)	SSB frequency domain Bandwidth (20 RBs) (MHz)
		15KHz	3.6
30KHz	7.2
		120KHz	28.8
240KHz	57.6

The NR SSB includes a cell-defining (CD) SSB and a non-cell-defining (NCD) SSB. The CD-SSB corresponds to 1 cell having a unique NR Cell Global Identifier (NCGI). If a certain SSB is associated with Remaining Minimum System Information (RMSI), then this SSB is a CD-SSB. And the terminal side equipment acquires the RMSI according to the detected CD-SSB. If a SSB is not associated with RMSI, then the SSB is an NCD-SSB.

One or more SSBs may form a SSB burst set, and the SSB burst set is located in the first half frame or the second half frame of the radio frame, and the period of the SSB burst set may also be referred to as the period of the SSBs. The type of SSB included in the same set of SSB bursts is the same, i.e., either CD-SSB or NCD-SSB.

Lmax denotes the maximum number of SSBs that can be transmitted by the access network side device in one SS burst set, and in general, the number of SSBs actually transmitted in one SS burst set is less than or equal to Lmax. The value of Lmax is related to the frequency range, for example, when the carrier frequency of the transmitting SSB is NR FR1 and less than or equal to 3GHz, Lmax is 4; when the carrier frequency of the transmitting SSB is NR FR1 and greater than 3GHz, Lmax is 8; when the carrier frequency of the transmission SSB is FR2, Lmax is 64.

The terminal side device may implement downlink time-frequency synchronization with the access network side device and acquire a Physical Cell Identifier (PCI) of the cell by detecting the PSS and the SSS in the SSB, thereby taking the cell as an initially camped cell. On the basis of downlink synchronization, the terminal side device obtains a Master Information Block (MIB) carried on the PBCH through channel measurement and channel estimation of the PBCH DRMS.

If the MIB indicates that a control resource set (CORESET) of a PDCCH common search space (Type0-physical downlink control channel common search space, Type-0 PDCCH CSS) of Type0 exists, it indicates that the SSB is a CD-SSB. The Type-0 PDCCH CSS is also called a search space 0, a search space set 0 or a search space set marked as 0; this core is referred to as core, MIB-configured core #0, or simply core #0, identified as 0. The terminal side equipment monitors a system information-radio network temporary identity (SI-RNTI) scrambled PDCCH by using the SI-RNTI on CORESET #0 and the Type-0 PDCCH CSS, wherein a PDSCH scheduled by the PDCCH carries a system information block 1(SIB1), and the SIB1 carries RMSI associated with the SSB.

If the MIB indicates that CORESET #0 does not exist, the terminal-side device cannot acquire the RMSI, thereby indicating that the SSB is not associated with the RMSI, and thus the SSB is an NCD-SSB.

The MIB can indicate whether CORESET #0 exists or not through different bit states; it may be that the CORESET #0 is present by a configuration carrying CORESET #0, and the CORESET #0 is not present by a configuration not carrying CORESET # 0.

If the MIB carries the configuration of CORESET #0, the terminal-side device may determine, according to the configuration of CORESET #0, that the location and the bandwidth of the initial downlink BWP are respectively the location and the bandwidth of the configured CORESET #0, and monitor the PDCCH scrambled by the SI-RNTI on CORESET #0 to obtain the SIB 1. The SIB1 may carry a configuration of the initial downlink BWP to reconfigure a location and a bandwidth of the initial downlink BWP, wherein the SIB1 reconfigured initial downlink BWP at least includes a location and a bandwidth of CORESET #0 in a frequency domain.

In the subsequent communication flow, if the terminal side equipment receives RRC dedicated messages such as an RRC setup message, an RRC recovery message, or an RRC reestablishment message, the terminal side equipment uses initial downlink BWP configured by the MIB before the terminal side equipment receives the RRC dedicated messages such as the RRC setup message, the RRC recovery message, or the RRC reestablishment message; after the terminal-side device receives these RRC dedicated messages, the terminal-side device uses the initial downlink BWP newly indicated by SIB 1. While the configuration of the initial upstream BWP may specifically be indicated by the initializlinkbwp included in SIB 1.

In the NR system, terminal-side devices include two types: reduced capability (RedCap) type terminal-side device and normal type terminal-side device.

The maximum bandwidth supported by the terminal-side device of the reduced capability type in FR1 is 20MHz, and the maximum bandwidth supported in FR2 is 100 MHz. The common types of terminal side devices include a terminal side device supporting an eMBB service and a terminal side device supporting a URLLC service, and are required to support a maximum bandwidth of 100MHz in FR1 and a maximum bandwidth of 200MHz in FR 2. It is also possible to support a maximum of 400MHz bandwidth in FR2 for some common types of terminals. The generic terminal-side device is also referred to as an old (legacy) terminal-side device.

Although the maximum bandwidth supported by the terminal side device of the reduced capability type is relatively small, the complexity of device implementation can be reduced, the power consumption can be saved, and the cost can be reduced. The terminal side equipment with the reduced capability type is mainly applied to wearable equipment, industrial wireless sensing and video monitoring. The terminal side device with reduced capability type can be extended to a low power consumption terminal such as a terminal side device for Machine Type Communication (MTC) and a terminal side device for narrowband-internet (lanes) interconnection.

As described above, the terminal-side device, whether of the normal type or the reduced capability type, can acquire the configuration of the initial downlink BWP through the SIB 1. It is currently considered that a reduced-capability-type terminal-side device may be configured with the reduced-capability-type-specific initial downlink BWP (may be referred to as a reduced-capability initial downlink BWP, a reduced-capability-dedicated initial downlink BWP, or a separate initial downlink BWP) through the SIB1, and accordingly, a normal-type terminal-side device may be configured with the normal-type-specific initial downlink BWP (may be referred to as legacy initial downlink BWP or normal initial downlink BWP) through the SIB 1. Through the design, on one hand, the congestion caused by the terminal side equipment of the reduced capability type and the terminal side equipment of the common type using the same initial downlink BWP is reduced, for example, the PDCCH for scheduling the random access response is received on the CORESET #0 using the same initial downlink BWP, the PDCCH for scheduling the service data transmission, and the PDCCH for scheduling the paging message are received by the terminal side equipment of the two types at the same time due to the limited capacity, so that the congestion is caused. With this design, on the other hand, in the time division multiplexing system, the initial upstream BWP and the initial downstream BWP of the reduced capability type terminal-side device can be made to form one BWP pair using the same center frequency without destroying channel reciprocity in the time division multiplexing system.

Whether a normal type of terminal-side device or a reduced capability type of terminal-side device, the CD-SSB may not be included within the initial downstream BWP being configured. Especially, for a terminal side device of a reduced capability type, the supported bandwidth is smaller, for example, the CD-SSB is located in the middle of the working carrier, and the initial downlink BWP corresponding to the reduced capability type is likely to be located at the edge of the working carrier. When any terminal side device works in the initial downlink BWP, to receive the SSB for Automatic Gain Control (AGC) adjustment, time-frequency tracking, beam management, radio resource management measurement, etc., the radio frequency module needs to be switched to another downlink BWP with CD-SSB to detect the CD-SSB and then switch back to the initial downlink BWP to ensure the subsequent communication on the initial downlink BWP, but this is not favorable to reducing the power consumption and delay of the terminal side device, resulting in an increase of communication resource overhead.

In view of the above problems, a first embodiment of the present application provides a communication processing method regarding an SSB. As shown in fig. 3A, the method includes the following.

301, an access network side device sends configuration information to a terminal side device, where the configuration information is used to configure an initial downlink BWP, where the initial downlink BWP is configured with a random access search space but does not include a CD-SSB.

It should be understood that a BWP includes or does not include SSBs, meaning that the frequency domain range of the BWP includes or does not include the frequency domain range of the SSBs.

Optionally, in 301, the access network side device may send a CD-SSB at a center frequency of a certain carrier, and the terminal side device detects that the CD-SSB realizes downlink time-frequency synchronization and acquires an MIB, thereby acquiring an SIB. Wherein an SIB (e.g., SIB1) carries the configuration information, which configures the initial downlink BWP, wherein the frequency domain position where the initial downlink BWP is configured does not have a CD-SSB. For a terminal-side device of a reduced capability type, the initial downlink BWP is an initial downlink BWP corresponding to the reduced capability type; for a terminal-side device of a normal type, the initial downlink BWP is an initial downlink BWP corresponding to the normal type.

It should be understood that, regardless of whether the terminal-side device of the reduced capability type or the terminal-side device of the normal type, in addition to the initial downlink BWP, the terminal-side device may be configured with an initial downlink BWP, referred to as a normal-type corresponding initial downlink BWP (or legacy initial downlink BWP for short), when receiving the MIB and the SIB1, the frequency domain position of the normal initial downlink BWP includes the CD-SSB.

302, the terminal side device receives first information sent by the access network side device, where the first information configures at least one NCD-SSB candidate resource on the initial downlink BWP.

In 302, the first information may be carried in a SIB (e.g., SIB1), in which case 301 and 302 may be combined.

In 302, the first information may also be carried in an RRC dedicated message, such as an RRC setup (setup) message, an RRC recovery (resume) message, or an RRC reestablishment (reestablishment) message, or in another RRC message in an RRC connected state, such as an RRC release (RRCRelease) message.

In 302, the NCD-SSB candidate resource configured by the first information may indicate a frequency position of the NCD-SSB candidate resource, a transmission period, and other parameters.

In 302, the first information may be sent by the access network-side device to the terminal-side device on a currently activated downlink BWP when the terminal-side device is in an RRC connected state, for example, the access network-side device instructs the terminal-side device to enter an RRC non-connected state from the RRC connected state, where the RRC non-connected state includes an RRC idle state (indicated by an RRC release message) and an RRC non-activated state (indicated by an RRC suspend message). In this case, the first information may not be used to distinguish whether it is used in an RRC connected state or an RRC non-connected state. It should be noted that, the end-side device may determine the currently activated downlink BWP according to the indication from the access network-side device, and therefore the currently activated downlink BWP may or may not be the initial downlink BWP.

303, the terminal side device initiates a first random access, monitors and schedules a PDCCH of a random access response of the first random access in the random access search space, and acquires second information sent by the access network side device; wherein the second information indicates an available NCD-SSB candidate resource among the at least one NCD-SSB candidate resource.

It should be understood that, the embodiment of the present application does not limit the time sequence of the terminal-side device initiating the first random access and acquiring the second information.

Optionally, if the terminal-side device acquires the second information before initiating the first random access, the terminal-side device knows the available NCD-SSB candidate resource after acquiring the second information. The terminal-side device may switch to the initial downlink BWP measurement NCD-SSB after acquiring the second information, and then initiate the first random access according to the measurement result of the NCD-SSB, that is, the terminal-side device may also receive the NCD-SSB before initiating the first random access.

It should be understood that the terminal side device initiating the first random access means that the terminal side device sends a random access preamble (or referred to as a physical random access channel preamble (PRACH preamble)) at a random access channel occasion (RACH occasion, RO).

Wherein an available NCD-SSB candidate resource indicates the presence of NCD-SSB on the NCD-SSB candidate resource, and an unavailable NCD-SSB candidate resource indicates the absence of NCD-SSB on the NCD-SSB candidate resource. And the access network side equipment transmits the NCD-SSB on the available NCD-SSB candidate resource and does not transmit the NCD-SSB on the unavailable NCD-SSB candidate resource.

Wherein the initiating, by the terminal side device, the first random access includes: and under the condition that the terminal side equipment is determined to be paged according to the paging PDCCH, the terminal side equipment initiates the first random access. The paging PDCCH indicates whether a paging PDSCH exists or not, and the paging PDSCH indicates whether the terminal side equipment is paged or not. For example, if the paging PDSCH includes the identifier of the terminal side device, it indicates that the terminal side device is paged. Optionally, the terminal side device may also initiate the first random access actively under the condition that the terminal side device is not paged, for example, the terminal side device may initiate the first random access when having data to be sent to the access network side device.

304, the terminal side device receives the NCD-SSB on the available NCD-SSB candidate resource, and initiates a second random access according to the received NCD-SSB after the random access fails.

It should be understood that the initiating of the second random access according to the received NCD-SSB is that the terminal side device performs measurement according to the NCD-SSB, and initiates the second random access according to a measurement result.

It should be understood that the present application does not limit the sequence in which the terminal-side device receives the NCD-SSB and the first random access failure on the available NCD-SSB candidate resources. And the terminal side equipment knows the available NCD-SSB after acquiring the second information, and in the process of the first random access, if candidate resources of the available NCD-SSB are encountered, the terminal side equipment can receive and measure the NCD-SSB. Optionally, if the terminal-side device does not encounter the available candidate resource of the NCD-SSB before the first random access failure, the NCD-SSB may also be received and measured on the available candidate resource of the NCD-SSB after the first random access failure, and then the second random access is initiated according to the measurement result of the NCD-SSB.

In 303 and 304, the first random access and the second random access may use the same random access preamble, or may use different random access preambles in the same or different random access preamble pools. The first random access and the second random access may be the same type or different types of random access, for example, both 4-step random access or 2-step random access, or one may be 4-step random access and the other may be 2-step random access. And the terminal side equipment sends a random access preamble, and starts to monitor the RNTI corresponding to 4-step random access or the PDCCH scrambled by the RNTI corresponding to 2-step random access in the random access search space on the initial downlink BWP. The random access search space is also referred to as a type 1-PDCCH common search space set (type-1PDCCH CSS).

In 303, the first random access may succeed and may fail. The reasons for the first random access failure include: unsuccessful reception of the random access response, failure of contention resolution, and the like. If it fails, the second random access is entered 304. Wherein, the random access response is not received successfully, the PDCCH may not be detected in a time window (also referred to as a random access response monitoring window) for monitoring and scheduling the PDCCH of the random access response, and the PDSCH carrying the random access response may not be received correctly or the PDSCH carrying a certain random access response does not include an identifier (random access preamble ID) of a random access preamble sent by the terminal side device. The contention resolution may fail to monitor a PDCCH of the message 4 scheduling the first random access due to a timeout of a contention resolution timer of the random access response, or a Common Control Channel (CCCH) Service Data Unit (SDU) transmitted by the terminal side device in the message 3 carrying the first random access is not included in the PDSCH carrying the message 4. It should be noted that, for 2-step random access, the message 3 and the message 1 are combined to form a message a of 2-step random access, and the message 4 and the message 2 are combined to form a message B of 2-step random access.

In 303, there are several alternative implementations:

(1) the second information is carried in system information sent by the access network side device in a broadcast form, for example, the system information is information contained in an MIB. Wherein the second information may occupy 1 bit reserved in the MIB by the 3GPP standard.

(2) The second information is carried in a PDCCH for scheduling a random access response of the first random access, as shown in fig. 3B.

In this example, the second information is carried in the PDCCH for scheduling the random access response, which indicates that the terminal side device initiates the first random access before and acquires the second information after.

(3) The second information is carried in a PDSCH carrying a random access response of the first random access.

In (2) and (3), the PDCCH indicates a resource location of a PDSCH carrying the random access response. The terminal side device may receive the PDSCH on the indicated resource location, thereby acquiring the random access response carried by the PDSCH. The DCI format of the PDCCH may be DCI format 1_0 defined by a 3GPP standard, and the second information may occupy at least one bit reserved in the 3GPP standard in the DCI format 1_ 0.

(4) The second information is carried in a paging PDCCH, as shown in fig. 3C, or in a PDSCH scheduled by the paging PDCCH.

Optionally, a paging search space is configured on legacy initial downlink BWP, and the terminal-side device switches to the legacy initial downlink BWP to monitor the paging PDCCH, thereby acquiring the second information. Or when the terminal side device does not initiate the first random access and is in an RRC idle state or an RRC inactive state, the terminal side device operates in legacy initial downlink BWP, and periodically monitors a paging PDCCH in the legacy initial downlink BWP, where the monitoring period may be a Discontinuous Reception (DRX) period configured by the access network side device. In this case, the access network-side device may not always send the NCD-SSB on the initial downlink BWP corresponding to the reduced capability type in an aperiodic manner.

Optionally, a paging search space is configured on the initial downlink BWP corresponding to the reduced capability type, and the terminal-side device monitors the paging PDCCH on the initial downlink BWP, so as to acquire the second information. In this case, the access network-side device may not always send the NCD-SSB on the initial downlink BWP corresponding to the reduced capability type in an aperiodic manner.

(5) The second information is carried in the wake-up PDCCH, as shown in fig. 3D.

In (4) and (5), the second information is carried in the paging PDCCH, or the PDSCH scheduled by the paging PDCCH, or the wake-up PDCCH, indicating that the terminal side device acquires the second information before, and initiates the first random access after.

Optionally, a paging advance indication search space and a paging search space are configured on the legacy initial downlink BWP, and the terminal-side device of the reduced capability type switches to the legacy initial downlink BWP to monitor the wake-up PDCCH, thereby acquiring the second information, and further monitors the paging PDCCH on the legacy initial downlink BWP. In this case, the access network-side device may not always send the NCD-SSB on the initial downlink BWP corresponding to the reduced capability type in an aperiodic manner.

Optionally, a paging advance indication search space is configured on the legacy initial downlink BWP, a paging search space is configured on the initial downlink BWP corresponding to the reduced capability type, and the terminal side device corresponding to the reduced capability type monitors a wake-up PDCCH on the legacy initial downlink BWP to acquire the second information, and further monitors the paging PDCCH on the initial downlink BWP corresponding to the reduced capability type. In this case, the access network-side device corresponding to the reduced capability type may not always send the NCD-SSB on the initial downlink BWP corresponding to the reduced capability type in an aperiodic manner. Optionally, in an RRC idle state/inactive state, when the terminal side device does not initiate random access, the terminal side device works in legacy initial downlink BWP.

Optionally, a paging advance indication search space and a paging search space are configured on the initial downlink BWP corresponding to the reduced capability type, and the terminal side device corresponding to the reduced capability type monitors a wake-up PDCCH on the initial BWP corresponding to the reduced capability type to acquire the second information, and further monitors the paging PDCCH. In this case, the access network-side device may not always send the NCD-SSB on the initial downlink BWP corresponding to the reduced capability type in an aperiodic manner. Optionally, in an RRC idle state/inactive state, when the terminal side device does not initiate random access, the terminal side device operates in legacy initial downlink BWP.

Optionally, in the implementation process, the second information may be valid for a corresponding validation duration. After the terminal-side device receives the second information, the terminal-side device may determine that the second information starts to take effect. The effective duration may be configured by the access network side device, or may be predefined by a standard protocol.

For example, if the second information indicates that the NCD-SSB candidate resource is available, the NCD-SSB candidate resource is only available for the validation duration of the second information.

If the second information indicates that the NCD-SSB candidate resource is not available, optionally, the NCD-SSB candidate resource is not available within the validation duration of the second information. Or, at this time, the terminal side device considers that the NCD-SSB candidate resource is unavailable until receiving the next second information indicating that the NCD-SSB candidate resource is available.

The effective duration may be a time window after the second information is received from the terminal-side device, or from the time the second information is received, or from the time before the second information is received. For example, the time window may be 1 times the period or a multiple greater than 1 when the NCD-SSB is transmitted in a periodic manner.

The time window may be one of several ways:

in manner 1, the time window may be a time window for monitoring the PDCCH for scheduling the random access response, as shown in fig. 3B, or a time period including the time window for monitoring the PDCCH, as shown in fig. 3E. The start of the period of time may be the start of a time window for monitoring the PDCCH, or the start of the next symbol, time slot or subframe of the random access preamble sent last time by the terminal side device.

In the manner 2, the time window may be one period of a periodic time window (where the period is equal to the duration of any time window), and the start of the time window is the start of the current time window or the next time window where the second information is obtained, as shown in fig. 3F. For the case that the terminal side device supports a Discontinuous Reception (DRX) mechanism, the time window may be one or more paging DRX cycles or a length of time comprising the one or more paging DRX cycles. The start of the period of time is the start of the one or more paging DRB cycles, e.g., the start of a default paging DRX cycle (e.g., the first frame or the first paging frame) in which the second information is received. As another example, the time window may be one or more modification periods of the system information or a length of time that encompasses the one or more modification periods. The start of the length of time is the start of the one or more modification periods. One modification period may be configured as a multiple of the paging DRX period. The paging DRX cycle is a default paging DRX cycle configured by the access network side equipment or a paging DRX cycle which is determined by the terminal side equipment and is suitable for the terminal side equipment.

Manner 3, the time window may be a time window after the PDCCH carrying the second information or after the PDSCH carrying the second information, as shown in fig. 3E and 3F. The start of the time window may be the start of the next symbol, slot or subframe after the PDCCH or the PDSCH. The start of the time window may be a time offset from the PDCCH or the PDSCH by a preset duration, which may be determined based on demodulation and decoding of the PDCCH or the PDSCH and a parsing time of PDCCH/PDSCH carrying content.

Manner 4, the time window may be a plurality of time periods that are not consecutive. For example, the time window includes a first time period and a second time period, where the first time period is a time window for monitoring a PDCCH for scheduling the random access response, and the second time period is a timing time of a contention resolution timer for the first random access, and a start of the second time period is a time of initial start or restart of the contention resolution timer.

In a manner 5, the time window may be a time from when the terminal side device receives the second information to when the random access is successful.

Optionally, if the second information indicates that the NCD-SSB candidate resource is available, the NCD-SSB candidate resource is available until next second information indicating that the NCD-SSB candidate resource is unavailable is received.

Optionally, between the first random access initiated in 303 and the second random access initiated in 304, when some available NCD-SSB resource arrives, the terminal side device may perform NCD-SSB time-frequency measurement. Since the beam mode of the SSB with the maximum signal strength of the terminal side device may change, if the terminal side device fails in a random access process after first sending a random access preamble. In this case, the terminal side device may send the random access preamble again or send a newly selected random access preamble, and re-initiate random access. Therefore, before the random access is reinitiated, the terminal-side device may reselect the NCD-SSB according to the measurement result of the NCD-SSB, for example, reselect the NCD-SSB with the strongest signal strength. The terminal-side device may determine whether to select a new random access channel occasion (RO) for the transmission of the random access preamble and whether to adjust the transmission power according to whether the selected NCD-SSB changes. For example, if the NCD-SSB selected is not changed, the terminal-side device may increase the transmission power to improve the success rate of random access; otherwise, the terminal side device keeps the transmission power unchanged. Wherein, if the terminal side device does not receive the random access response of the first random access or the RAPID of the terminal side device is not included in the PDSCH carrying the random access response, the terminal side device still uses the random access preamble of the first random access for retransmission in the second random access. In this case, the terminal side device completes sending the random access preamble within T +0.75 milliseconds after the first random access response listening window or after the PDSCH carrying the random access response, where T is the processing time of the terminal side device on the PDSCH. Typically, T is less than 1 millisecond.

By applying the technical solution provided by the first embodiment, the terminal side device is preconfigured for NCD-SSB candidate resources, and the NCD-SSB is detected from available candidate resources indicated in the NCD-SSB candidate resources at the access network side device, so that after the random access fails, the random access is performed again according to the received NCD-SSB. By configuring NCD-SSB for the current initial downlink BWP, the NCD-SSB is detected at the current initial downlink BWP without switching to other downlink BWPs to detect CD-SSB, the power consumption and time delay of terminal side equipment caused by frequent radio frequency switching are reduced, and the resource overhead of a communication system is reduced. From the access network side device, the state of availability or unavailability of the NCD-SSB candidate resource can be indicated by the second information, so that the NCD-SSB can be avoided from being always transmitted, and resource overhead can be saved.

A second embodiment of the present application provides another communication processing method for SSB. As shown in fig. 4A and 4B, the method includes the following.

401, a terminal side device receives first configuration information and second configuration information sent by an access network side device, where the first configuration information is used to configure a first initial downlink bandwidth portion BWP, and the second configuration information is used to configure a second initial downlink BWP; wherein the first initial downlink BWP comprises a CD-SSB and a configured paging early indication (paging early indication) search space; the second initial downlink BWP is configured with a paging search space but does not include a CD-SSB.

Optionally, the paging advance indication search space is configured on CORESET #0, and the paging search space is configured on the second initial downlink BWP (i.e. SIB configured initial downlink BWP).

Optionally, the first initial downlink BWP is a legacy initial downlink BWP.

401 is similar to 301, the access network side device may send a CD-SSB at a center frequency of a certain carrier, and the terminal side device detects, at the center frequency, that the CD-SSB realizes downlink time-frequency synchronization and acquires a MIB (for configuring CORESET #0), so as to acquire an SIB (e.g., SIB 1). Optionally, a SIB (e.g., SIB1) carries the first configuration information and the second configuration information. Optionally, the terminal-side device is a terminal-side device of a reduced capability type, the first downlink BWP is a BWP corresponding to core set #0, and the second downlink BWP is a BWP corresponding to the reduced capability type. The first configuration information is used for configuring a paging advance indication search space for the bandwidth of CORESET #0, so that the terminal side device monitors the wake-up PDCCH in the paging advance indication search space. The paging indicates in advance that the control resource set associated with the search space is core #0, or one of the core #0, for example, a common core.

The second configuration information is used to configure a paging search space for the second initial downlink BWP, so that the terminal side device monitors a paging PDCCH after being awakened.

402, the terminal side device receives the CD-SSB on the first initial downlink BWP, performs time-frequency synchronization and measurement according to the received CD-SSB, and monitors an awake PDCCH in the paging advance indication search space, where the awake PDCCH carries a paging advance indication, and the paging advance indication is used to indicate whether the terminal side device is awake to monitor the paging PDCCH at a paging PDCCH monitoring occasion.

In 402, the terminal side device may be in an RRC non-connected state. The terminal side device may be configured to enter an RRC non-connected state from an RRC connected state by the access network side device through an RRC message indication, where the RRC non-connected state includes an RRC idle state and an RRC inactive state. Here, the RRC message may be an RRC connection release message or an RRC release message.

Before 402 or before 402, the terminal-side device may receive third configuration information sent by the access network-side device, where the third configuration information is used to configure candidate resources of the NCD-SSB for the first initial downlink BWP, for example, parameters such as a frequency domain candidate position and a period of the NCD-SSB. The third configuration information may be carried in RRC signaling for RRC connected state (e.g., RRC connection release message) or in RRC non-connected state (e.g., SIB 1).

In 402, the terminal side device may first operate in the bandwidth of CORESET #0 or other operating bandwidth (i.e. the first initial downlink BWP) including the CD-SSB to listen to the wake-up PDCCH. And if the awakening PDCCH is monitored, determining whether the terminal side equipment is awakened or not according to the paging advance indication carried by the awakening PDCCH. And if not, keeping the terminal side equipment at the current working bandwidth. If the terminal side device is awakened, the terminal side device switches the working bandwidth to the second initial downlink BWP configured in 401, so as to monitor the paging PDCCH on the configured paging search space.

403, if the paging advance indication indicates that the terminal-side device is awake, the terminal-side device wakes up and determines that NCD-SSB exists on the second initial downlink BWP.

In 403, if the paging advance indication wakes up the terminal side device, the terminal side device determines that an NCD-SSB candidate resource configured by the third configuration information has an NCD-SSB transmission; correspondingly, if the access network side equipment wakes up the terminal side equipment through the paging advance indication, the access network side equipment sends the NCD-SSB on the configured NCD-SSB candidate resource according to the configured frequency domain candidate position and period.

If the paging advance indicates not to wake up the terminal side device, the access network side device does not send the NCD-SSB on the configured NCD-SSB candidate resource, and the terminal side device determines that the NCD-SSB does not exist on the initial downlink BWP, and thus does not receive the NCD-SSB.

Optionally, after the terminal side device is awakened, it is confirmed that the NCD-SSB exists on the initial downlink BWP within the validation time of the NCD-SSB. The effective time of the NCD-SSB may also be a time window from when the wake-up PDCCH is received as a start (for example, the time of the wake-up PDCCH is used as a time period from the start to when the wake-up PDCCH indicates that the monitoring occasion of the paging PDCCH is ended) or a time window after the time of the wake-up PDCCH. The time window may be predefined by the access network side device configuration or protocol. Optionally, the effective time here may also adopt an implementation manner (for example, manner 1 to manner 5) of the effective duration (or effective time window) in the foregoing embodiment, which is not described again.

In the above implementation, the paging advance indication indicates that the terminal side device is awakened to determine whether NCD-SSB is available, which is an implicit determination method, and explicit indication information is not carried in the awakening PDCCH. Whether NCD-SSB is available or not can also be indicated in an explicit manner, as follows. For example, the wake-up PDCCH may also be used to indicate whether an NCD-SSB is available. Optionally, the available NCD-SSB may be located before the monitoring occasion for the paging PDCCH, so as to perform measurement according to the available NCD-SSB to monitor the paging PDCCH.

For example, if the wake-up PDCCH indicates that the NCD-SSB is available, the terminal-side device may receive the NCD-SSB for measurement at the second initial downlink BWP, and if the wake-up PDCCH indicates that the NCD-SSB is not available, the terminal-side device receives the CD-SSB for measurement at the first initial downlink BWP, and then monitors the paging PDCCH at the second initial downlink BWP.

404, the terminal side device detecting the non-cell-defined NCD-SSB on the second initial downlink BWP.

If the wake-up PDCCH indicates that there is an available NCD-SSB before the monitoring occasion of the paging PDCCH, the terminal-side device can directly detect the NCD-SSB on the nearest NCD-SSB candidate resource before the monitoring occasion of the paging PDCCH.

405, the terminal side device monitors the paging PDCCH according to the received NCD-SSB.

The terminal side device receives the NCD-SSB mainly for the purpose of measurement, e.g., performing AGC adjustment, time-frequency synchronization or beam measurement (e.g., beam selection), and then monitors the paging PDCCH according to the measurement result.

If the paging advance indication carried by the awakening PDCCH indicates that the terminal side equipment is awakened, the terminal side equipment monitors the paging PDCCH at the monitoring time of the paging PDCCH;

if the terminal side equipment is determined to be paged according to the paging PDCCH, the terminal side equipment initiates random access;

and if the terminal side equipment is determined not to be paged according to the paging PDCCH, the terminal side equipment continues to work in an RRC non-connected state.

By applying the technical scheme provided by the second aspect of the present application, the terminal side device determines the existence of the NCD-SSB after being awakened so as to further receive the NCD-SSB, and the access network side device determines to awaken the terminal side device so as to send the NCD-SSB, so that the communication system can purposefully transmit the NCD-SSB according to actual needs, and the resource overhead of the communication system is reduced.

A third embodiment of the present application provides another communication processing method for SSB. As shown in fig. 5A and 5B, the method includes the following.

501, a terminal side device receives configuration information sent by an access network side device, where the configuration information is used to configure an initial downlink BWP, where the initial downlink BWP is configured with a paging advance indication search space and a paging search space, but does not include a synchronization signal-physical broadcast channel block SSB (CD-SSB) of a cell definition CD.

501 and 401 are similar, the access network side device may send a CD-SSB at a center frequency of a certain carrier, and the terminal side device detects the CD-SSB at the center frequency to implement downlink time-frequency synchronization and acquire an MIB, thereby acquiring an SIB. Wherein an SIB (for example, SIB1) carries the configuration information, and the configuration information configures the initial downlink BWP, where a frequency domain position where the initial downlink BWP is configured does not have a CD-SSB. For a terminal-side device with a reduced capability type, the configuration information #1 may configure the initial downlink BWP corresponding to the reduced capability type.

The configuration information is further used for configuring a paging advance indication search space for the terminal side device in the initial downlink BWP, so that the terminal side device monitors the wake-up PDCCH in the paging advance indication search space; and the configuration information is further used for configuring a paging search space for the terminal side device in the initial downlink BWP, so that the terminal side device monitors a paging PDCCH after being awakened. Compared with the second embodiment, the configuration information in the third embodiment configures both the paging advance indication search space and the paging search space for the same initial downlink BWP.

It should be understood that the terminal side device may also be configured with legacy initial downlink BWP, which includes CD-SSB.

502, before a monitoring occasion of a wake-up PDCCH, the terminal side device detects a NCD-SSB on a configured NCD-SSB candidate resource, where the wake-up PDCCH carries a paging advance indication, and the paging advance indication is used to indicate that the terminal side device is woken up to detect the paging PDCCH at the monitoring occasion of the paging PDCCH.

503, if the NCD-SSB is detected, the terminal side device determines that the wake-up PDCCH exists at the monitoring occasion of the wake-up PDCCH. Correspondingly, if the access network side equipment determines to send the wake-up PDCCH, the NCD-SSB is sent before the wake-up PDCCH is sent.

If the NCD-SSB is not detected, the terminal side equipment determines that the awakening PDCCH does not exist in the monitoring occasion of the awakening PDCCH, so that the awakening PDCCH is not monitored in the monitoring occasion. Correspondingly, the access network side device does not send the NCD-SSB before the monitoring occasion, and does not send the wake-up PDCCH at the monitoring occasion.

And 504, the terminal side device monitors the wake-up PDCCH on the initial downlink BWP at the monitoring occasion of the wake-up PDCCH according to the detected NCD-SSB.

In 502 and 503, the candidate resources of the NCD-SSB may be directly configured by the access network side device through SIB or directly predefined by protocol.

In 502 and 503, the candidate resource of the NCD-SSB may have an association relationship with the monitoring occasion of the wake-up PDCCH. The association relationship may be predefined by the access network side device configuration or protocol. The terminal side device may detect the NCD-SSB on a candidate resource associated with the monitoring occasion of the wake-up PDCCH.

Optionally, the candidate resource associated with the monitoring occasion of the wake-up PDCCH is located in an NCD-SSB candidate resource in the latest N SSB periods before the monitoring occasion, where N is a positive integer, and N may be predefined by an access network side device configuration or protocol, for example, N is 1.

Optionally, the NCD-SSB in 502 and 503 is located in a time window before the monitoring occasion of the wake-up PDCCH, where the time window is a time period configured by an access network side device and associated with the monitoring occasion of the wake-up PDCCH, or the time window is a time period consisting of 1 or more NCD-SSB cycles closest to the monitoring occasion of the wake-up PDCCH.

It should be understood that in the embodiment of the present application, the NCD-SSB candidate resource is not necessarily available, that is, the access network-side device does not necessarily transmit the NCD-SSB on the NCD-SSB candidate resource. Therefore, the NCD-SSB period actually represents the period of the NCD-SSB candidate resource. The candidate resources occur periodically, but the NCD-SSB does not necessarily exist on the candidate resources. Therefore, NCD-SSB does not necessarily occur periodically. In addition, the period of the NCD-SSB represents the period of the NCD-SSB burst set, and represents the time duration between two adjacent NCD-SSB burst sets, but not the time duration between two adjacent actually sent NCD-SSBs.

In 504, if the paging advance indication carried by the wake-up PDCCH indicates that the terminal-side device is woken up, the terminal-side device monitors the paging PDCCH at a monitoring occasion of the paging PDCCH; if the terminal side equipment is determined to be paged according to the paging PDCCH, the terminal side equipment initiates random access; and if the terminal side equipment is determined not to be paged according to the paging PDCCH, the terminal side equipment continues to work in an RRC non-connected state.

Optionally, the wake-up PDCCH is also used to indicate whether there are other NCD-SSBs available. The other NCD-SSB belongs to the same periodic resource as the NCD-SSB candidate resource in 502 and 503, that is, the other NCD-SSB belongs to a different set of SSB bursts in the same periodic NCD-SSB as the NCD-SSB candidate resource in 502 and 503.

The wake-up PDCCH may specifically indicate whether NCD-SSB is available within a time window from a time when the wake-up PDCCH is present as a start to a monitoring occasion of the paging PDCCH that the wake-up PDCCH indicates as an end. Optionally, the effective time of the NCD-SSB is the time window from which the wake-up PDCCH is received or a time window after the time of the wake-up PDCCH. The time window may be predefined by the access network side device configuration or protocol.

Optionally, the wake-up PDCCH is further configured to indicate whether there are other available NCD-SSBs in the effective duration, where the effective duration may also adopt an implementation manner (e.g., manner 1 to manner 5) of the effective duration (or the effective time window) in the previous embodiment, which is not described again.

Optionally, the available states of other NCD-SSBs may also be implicitly determined according to the wake-up PDCCH indicating whether the terminal-side device monitors the paging PDCCH. For example, if the wake-up PDCCH indicates that the terminal-side device monitors the paging PDCCH, other NCD-SSBs exist within the effective duration, and if the wake-up PDCCH indicates that the terminal-side device does not monitor the paging PDCCH, other NCD-SSBs do not exist or other NCD-SSBs do not exist within the effective duration. The effective time implementation is similar to the above, and is not described again.

It should be noted that, in various embodiments of the present invention, as shown in fig. 5C, the terminal-side device detects NCD-SSB on the initial downlink BWP, and may implement RRM measurement (also referred to as mobility measurement). In order to ensure the performance of RRM measurement, the NCD-SSB candidate resource at some time may be configured or defined by the protocol to be positively available, and there is no need for blind detection by the terminal side device or for determining the available state of the NCD-SSB according to the detection result of the wake-up PDCCH.

Optionally, the NCD-SSB candidate resources are available on Q NCD-SSB candidate resource periods in every P NCD-SSB candidate resource periods. Wherein P, Q is a positive integer, configurable or protocol predefined. Wherein the Q NCD-SSB candidate resource periods may be consecutive Q NCD-SSB candidate resource periods, which may be the first Q of the P periods, or the last Q, or the middle Q periods.

Optionally, the NCD-SSB is available within any one of periodic time windows, wherein a duration of any one of the periodic time windows is less than a period of the periodic time window, and the periodic time window may be configured or protocol predefined. For example, the period of the periodic time window is equal to a multiple of the paging DRX period or the system information modification period, and the duration of any time window in the periodic time window is equal to a multiple of the NCD-SSB period.

For example, the NCD-SSB may be sent in at least one of the following cases: (1) within the first SSB cycle of each paging DRX cycle; (2) within the first SSB period of every M paging DRX cycles, where M may be a positive integer or decimal, e.g., 0.5,1.5, etc. Therefore, if the terminal-side device does not detect NCD-SSB on the initial downlink BWP before the listening occasion of the wake-up PDCCH arrives or within the time window, the terminal-side device may detect NCD-SSB within at least one of the indicated time domain positions to perform RRM measurement, thereby ensuring the performance of RRM measurement. Wherein the paging DRX cycle may be a default paging DRX cycle.

It should be understood that, in the present application, the monitoring timing at which the terminal side device monitors the paging PDCCH is the monitoring timing determined by the terminal side device to belong to the terminal side device. The wake-up PDCCH is used to indicate whether to monitor the paging PDCCH at the monitoring occasion of the paging PDCCH, where the monitoring occasion of the wake-up PDCCH and the monitoring occasion of the paging PDCCH are configured or protocol-defined associated monitoring occasions, that is, the wake-up PDCCH is only used to indicate whether the paging PDCCH exists at the associated monitoring occasion of the paging PDCCH.

By applying the technical scheme provided by the third embodiment of the application, before the monitoring occasion for awakening the PDCCH comes, the terminal side equipment detects the existence of the NCD-SSB so as to confirm whether to monitor the awakened PDCCH or not; and the access network side equipment sends the NCD-SSB before waking up the monitoring opportunity of the PDCCH after confirming to wake up the terminal side equipment, so that the communication system can purposefully transmit the NCD-SSB according to the actual requirement, and the resource overhead of the communication system is reduced.

A fourth embodiment of the present application provides a communication processing apparatus 600, as shown in a schematic structural diagram of units of the communication processing apparatus shown in fig. 6, where the communication processing apparatus 600 includes a receiving unit 601 and a transmitting unit 602.

The communication processing apparatus 600 provided in the fourth embodiment of the present application may be a terminal side device or an access network side device in the foregoing method embodiments. Correspondingly, the communication processing apparatus 600 further comprises a processing unit 603. Specifically, the receiving unit 601 is configured to execute a receiving action of the terminal side device or the access network side device in the foregoing embodiments, the sending unit 602 is configured to execute a sending action of the terminal side device or the access network side device, and the processing unit 603 is configured to execute processing actions of determining, obtaining, and the like of the terminal side device or the access network side device, which may specifically refer to the contents described in the foregoing method embodiments.

In a specific hardware implementation, as shown in the hardware structure diagram of the communication processing apparatus shown in fig. 7, the function of the receiving unit 601 may be specifically implemented by a receiver 701, the sending unit 602 may be implemented by a sender 702, and the function of the processing unit 603 may be specifically implemented by a processor 703. The communication processing apparatus may also include various electronic circuits such as a bus 704, a memory 705, and a communication interface 706, among others. Wherein the memory may contain instruction codes for implementing the method steps of the aforementioned method embodiments when called by the processor 703.

The communication interface may be a wired communication interface, which may be, for example, an ethernet interface, a wireless communication interface, or a combination. The ethernet interface may be an optical interface, an electrical interface, or a combination thereof; the wireless communication interface may be a wireless local area network interface.

The bus may be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-readable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having a computer program embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

Claims

1. A method for processing communication relating to SSB, comprising:

a terminal side device receives configuration information sent by an access network side device, wherein the configuration information is used for configuring an initial downlink bandwidth part BWP, and the initial downlink BWP is configured with a random access search space and does not include a synchronization signal-physical broadcast channel block SSB (CD-SSB) of a cell definition CD;

the terminal side equipment initiates a first random access and monitors and schedules a Physical Downlink Control Channel (PDCCH) of a random access response of the first random access in a random access search space;

2. The method of claim 1, wherein the second information is carried in a master information block, MIB, or a system information block, SIB, sent by the access network side device.

3. The method of claim 1, wherein the second information is carried in a physical downlink control channel (PDSCH) carrying a random access response for the first random access or the second information is carried in a PDCCH scheduling the PDSCH.

4. The method of claim 1, wherein the terminal side device obtaining the second information from the access network side device comprises:

the terminal side equipment receives a paging PDCCH, wherein the paging PDCCH carries the second information or a PDSCH scheduled by the paging PDCCH carries the second information;

5. The method of claim 1, wherein the terminal-side device obtaining the second information from the access network-side device comprises:

the terminal side equipment receives a wake-up PDCCH; the wake-up PDCCH carries the second information and a paging advance indication, wherein the paging advance indication is used for indicating whether the terminal side equipment is woken up to monitor the paging PDCCH at a monitoring occasion of the paging PDCCH;

wherein the initiating, by the terminal side device, the first random access includes:

and under the condition that the terminal side equipment is determined to be paged according to the paging PDCCH, the terminal side equipment initiates the first random access.

6. A method for processing communication regarding SSB, the method comprising:

the method comprises the steps that terminal side equipment receives first configuration information and second configuration information sent by access network side equipment, wherein the first configuration information is used for configuring a first initial downlink bandwidth part BWP, and the second configuration information is used for configuring a second initial downlink BWP; wherein the first initial downlink BWP comprises a synchronization Signal-physical broadcast channel Block (CD-SSB) of a cell definition CD and a configured paging Advance indication search space; the second initial downlink BWP is configured with a paging search space, but does not include a CD-SSB;

the terminal side equipment receives the CD-SSB on the first initial downlink BWP, and monitors a wake-up PDCCH in a paging advance indication search space according to the received CD-SSB, wherein the wake-up PDCCH carries a paging advance indication which is used for indicating whether the terminal side equipment is woken up to monitor the paging PDCCH at a monitoring occasion of the paging PDCCH in the paging search space;

if the paging advance indication indicates that the terminal-side device is awakened, the terminal-side device awakens and determines that non-cell-defined NCD-SSB exists on the second initial downlink BWP;

7. A method for processing communication regarding SSB, the method comprising:

the method comprises the steps that a terminal side device receives configuration information sent by an access network side device, wherein the configuration information is used for configuring an initial downlink bandwidth part BWP, the initial downlink BWP is configured with a paging advance indication search space and a paging search space, but a cell defines a synchronous signal-physical broadcast channel block SSB (CD-SSB) of a CD;

before a monitoring opportunity of awakening the PDCCH on the paging advance indication search space arrives, the terminal side equipment detects NCD-SSB on configured non-cell-defined NCD-SSB candidate resources, wherein the awakening PDCCH carries a paging advance indication which is used for indicating whether the terminal side equipment is awakened to monitor the paging PDCCH at the monitoring opportunity of the paging PDCCH;

8. The method of claim 7, wherein the candidate resources for the NCD-SSB are located in a time window before a monitoring occasion of the wake-up PDCCH, wherein the time window is a time period associated with the monitoring occasion of the wake-up PDCCH configured by an access network side device, or the time window is a time period consisting of 1 or more NCD-SSB candidate resource periods closest to the monitoring occasion of the wake-up PDCCH.

9. The method of claim 7 or 8, wherein the wake-up PDCCH is also used to indicate whether there are further NCD-SSBs available; and the candidate resource where the other NCD-SSB is located and the candidate resource where the NCD-SSB is located belong to the same periodic resource.

10. The method of any one of claims 7-9, further comprising:

if the NCD-SSB is not detected, the terminal side equipment determines not to monitor the wake-up PDCCH.

11. A method for processing communication relating to SSB, comprising:

the method comprises the steps that an access network side device sends configuration information to a terminal side device, wherein the configuration information is used for configuring an initial downlink bandwidth part BWP, and the initial downlink BWP is configured with a random access search space and does not comprise a synchronization signal-physical broadcast channel block SSB (CD-SSB) of a cell definition CD;

the access network side equipment sends first information to the terminal side equipment, and the first information configures at least one non-cell-defined NCD-SSB candidate resource on the initial downlink BWP;

the access network side device sends second information to the terminal side device, wherein the second information indicates available NCD-SSB candidate resources in the at least one NCD-SSB candidate resource;

and the access network side equipment transmits the NCD-SSB on the available NCD-SSB candidate resources.

12. The method of claim 11, wherein the second information is carried in a master information block, MIB, or a system information block, SIB, transmitted by the access network-side device.

13. The method of claim 11, wherein the method further comprises:

the access network side equipment receives a random access lead code sent by the terminal side equipment for the first random access;

wherein the sending, by the access network side device, the second information to the terminal side device includes:

14. The method of claim 11, wherein the access network side device sends second information to the terminal side device, comprising:

15. The method of claim 11, wherein the sending, by the access network-side device, the second information to the terminal-side device includes:

16. A method for processing communication regarding SSB, the method comprising:

an access network side device sends first configuration information and second configuration information to a terminal side device, wherein the first configuration information is used for configuring a first initial downlink bandwidth part BWP, the second configuration information is used for configuring a second initial downlink BWP, the first initial downlink BWP comprises a synchronization signal-physical broadcast channel block (CD-SSB) of a cell definition CD and a configured paging advance indication search space, and the second initial downlink BWP is configured with a paging search space but does not comprise the CD-SSB;

and under the condition that the access network side equipment determines to wake up the terminal side equipment through the wake-up PDCCH, the access network side equipment sends non-cell-defined NCD-SSB on the second initial downlink BWP and sends the paging PDCCH in the paging search space.

17. The method of claim 16, wherein the method further comprises:

and under the condition that the access network side equipment determines not to wake up the terminal side equipment through a wake-up PDCCH, the access network side equipment determines not to send the NCD-SSB on the second initial downlink BWP.

18. A method for processing communication regarding SSB, the method comprising:

the method comprises the steps that an access network side device sends configuration information to a terminal side device, wherein the configuration information is used for configuring an initial downlink bandwidth part BWP, the initial downlink BWP is configured with a paging advance indication search space and a paging search space, but does not comprise a synchronous signal-physical broadcast channel block SSB (CD-SSB) of a cell definition CD;

the access network side equipment determines whether the monitoring occasion of the awakening PDCCH on the paging advance indication search space sends the awakening PDCCH; the wake-up PDCCH carries a paging advance indication, wherein the paging advance indication is used for indicating whether the terminal side equipment is woken up to monitor the paging PDCCH at a monitoring occasion of the paging PDCCH;

if the awakening PDCCH is determined to be sent at the monitoring time of the awakening PDCCH, the access network side equipment sends non-cell-defined NCD-SSB before the monitoring time of the awakening PDCCH comes;

19. The method of claim 18, wherein the method further comprises:

and if the awakening PDCCH is determined not to be sent at the monitoring occasion of the awakening PDCCH, the access network side equipment determines not to send the NCD-SSB before the monitoring occasion of the awakening PDCCH comes.

20. The method of claim 18 or 19, wherein the NCD-SSB is located within a time window before a monitoring occasion of the wake-up PDCCH, wherein the time window is a time period associated with the monitoring occasion of the wake-up PDCCH configured by an access network side device, or wherein the time window is a time period consisting of 1 or more NCD-SSB periods closest to the monitoring occasion of the wake-up PDCCH.

21. The method of any of claims 18-20, wherein the wake-up PDCCH is further used to indicate whether there are other NCD-SSBs available; and the candidate resource where the other NCD-SSB is located and the candidate resource where the NCD-SSB is located belong to the same periodic resource.

22. A communications processing apparatus comprising a processor and a memory storing a computer program for invocation by the processor to cause the communications apparatus to implement the method of any of claims 1 to 10.

23. A communication processing apparatus comprising a processor and a memory storing a computer program for invocation by said processor to cause said communication apparatus to implement a method according to any of claims 11 to 21.

24. A computer-readable storage medium, wherein the storage medium stores a computer program that is invoked by a computer to implement the method of any one of claims 1-21.

25. A computer program product, wherein the computer program product comprises a computer program that, when invoked by a computer, implements the method of any one of claims 1-21.