CN120186799A

CN120186799A - Random access, communication method, device and equipment

Info

Publication number: CN120186799A
Application number: CN202311764474.9A
Authority: CN
Inventors: 蒋露; 李�根; 潘学明
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2023-12-19
Filing date: 2023-12-19
Publication date: 2025-06-20
Also published as: WO2025130769A1

Abstract

The present application discloses a random access, communication method, apparatus and device, belonging to the field of communication technology. The random access method disclosed in the embodiment of the present application includes: a terminal receives first information about a second access object group sent by a network side device through a first access object, wherein the second access object group includes one or more second access objects different from the first access object; the terminal selects a target access object for performing a first operation from the first access object and the second access object group according to the first information and a first rule, wherein the first operation includes residence or random access, and the access object includes one of a carrier, a cell and a bandwidth part BWP.

Description

Random access, communication method, device and equipment

Technical Field

The present application belongs to the technical field of communication, and in particular relates to a random access method, a random access device, a random access communication device, and a random access device.

Background

In order to enhance the capacity of the network side, the network side introduces a plurality of access objects such as multi-carriers (multi-carriers) or multi-cells, and a terminal (UE) can randomly access one of the plurality of access objects. Taking multi-carrier or multi-cell as an example, if the UE wants to access a certain carrier/cell randomly, it needs to acquire the synchronization signal or physical broadcast channel block (Synchronization Signal/Physical Broadcast Channel block, SSB) sent by the carrier/cell to acquire time-frequency synchronization, and if the UE wants to initiate random access on a certain carrier/cell, it needs to acquire the system information block1 (System Information Block, SIB) of the carrier/cell first, because the SIB1 contains RACH configuration.

To reduce the power consumption on the network side, one carrier/cell may not send SSB/SIB or do not monitor RACH. However, if one carrier/cell does not send SSB and does not configure the carrier/cell as synchronous reference, the carrier/cell cannot make random access for the UE, if one carrier/cell does not send SIB and the UE does not acquire SIB of the carrier from the rest of carriers/cells, since the UE cannot acquire RACH configuration on the carrier/cell, it can only gather the carrier/cell with RACH configuration to make random access, which can result in too high load of the carrier/cell that allows random access, and if one carrier/cell does not make RACH monitoring, the UE in idle state cannot make random access on the carrier/cell, which can result in a decrease in network side capacity.

Therefore, in the multi-access object scenario, how to implement random access of the UE, so as to save energy for the network side device and ensure the capacity of the network side as much as possible, is still a technical problem to be solved.

Disclosure of Invention

The embodiment of the application provides a random access and communication method, device and equipment, which are used for carrying out network energy conservation as much as possible on the premise of ensuring the capacity of a network side.

In a first aspect, a random access method is provided, the method including:

Receiving first information about a second access object group sent by network side equipment through a first access object, wherein the second access object group comprises one or more second access objects different from the first access object;

And selecting a target access object for executing a first operation from the first access object and the second access object group according to the first information and a first rule, wherein the first operation comprises resident or random access, and the access object comprises one of carrier wave, cell and bandwidth part BWP.

In a second aspect, a communication method is provided, the method comprising:

And transmitting first information about a second access object group to a terminal through a first access object, wherein the second access object group comprises one or more second access objects different from the first access object, the first information is used for the terminal to select a target access object for executing a first operation, wherein the first operation comprises resident or random access, and the access object comprises one of a carrier wave, a cell and a bandwidth part BWP.

In a third aspect, there is provided a random access apparatus comprising:

The information receiving module is used for receiving first information about a second access object group sent by the network side equipment through a first access object, wherein the second access object group comprises one or more second access objects different from the first access object;

And an access object selection module, configured to select a target access object for performing a first operation in the first access object and the second access object group according to the first information and a first rule, where the first operation includes camping or random access, and the access object includes one of a carrier, a cell, and a bandwidth part BWP.

In a fourth aspect, there is provided a communication apparatus comprising:

An information sending module, configured to send, to a terminal through a first access object, first information about a second access object group, where the second access object group includes one or more second access objects different from the first access object, where the first information is used for the terminal to select a target access object that performs a first operation, where the first operation includes camping or random access, and the access object includes one of a carrier, a cell, and a bandwidth part BWP.

In a fifth aspect, there is provided a terminal comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the method as described in the first aspect.

In a sixth aspect, a terminal is provided, which includes a processor and a communication interface, where the communication interface is configured to receive first information about a second access object group sent by a network side device through a first access object, where the second access object group includes one or more second access objects different from the first access object, and the processor is configured to select, according to the first information and a first rule, a target access object that performs a first operation in the first access object and the second access object group, where the first operation includes camping or random access, and the access object includes one of a carrier, a cell, and a bandwidth part BWP.

In a seventh aspect, a network side device is provided, comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the method as described in the second aspect.

In an eighth aspect, a network side device is provided, including a processor and a communication interface, where the communication interface is configured to send, to a terminal, first information about a second access object group through a first access object, where the second access object group includes one or more second access objects different from the first access object, the first information is used for the terminal to select a target access object that performs a first operation, where the first operation includes a camping or random access, and the access object includes one of a carrier, a cell, and a bandwidth part BWP.

A ninth aspect provides a communication system comprising a terminal operable to perform the steps of the random access method as described in the first aspect and a network side device operable to perform the steps of the random access method as described in the second aspect.

In a tenth aspect, there is provided a readable storage medium having stored thereon a program or instructions which when executed by a processor, performs the steps of the method according to the first aspect or performs the steps of the method according to the second aspect.

In an eleventh aspect, there is provided a chip comprising a processor and a communication interface coupled to the processor, the processor being for running a program or instructions to implement the method according to the first aspect or to implement the method according to the second aspect.

In a twelfth aspect, there is provided a computer program/program product stored in a storage medium, the computer program/program product being executed by at least one processor to implement the steps of the method according to the first or second aspect.

In the embodiment of the application, the network side equipment provides the first information about the second access object group for the terminal through the first access object, so that the terminal can select the target access object to be subjected to resident or random access in the first access object and the second access object group according to the first information and the first rule, and the second access object is not required to continuously send SSB, SIB and other information all the time, therefore, the capacity of the network side can be ensured to the greatest extent while the network side saves energy.

Drawings

Fig. 1 is a block diagram of a wireless communication system provided in an embodiment of the present application.

Fig. 2 is a flow chart of a random access method according to an embodiment of the present application.

Fig. 3 is a flow chart of a random access method according to another embodiment of the present application.

Fig. 4 is a flowchart of a random access method according to another embodiment of the present application.

Fig. 5 is a flowchart of a random access method according to another embodiment of the present application.

Fig. 6 is a schematic diagram of a random access procedure according to an embodiment of the present application.

Fig. 7 is a schematic diagram of a random access procedure according to another embodiment of the present application.

Fig. 8 is a flow chart of a communication method according to an embodiment of the application.

Fig. 9 is a schematic structural diagram of a random access device according to an embodiment of the present application.

Fig. 10 is a schematic structural diagram of a random access device according to another embodiment of the present application.

Fig. 11 is a schematic structural diagram of a random access device according to another embodiment of the present application.

Fig. 12 is a schematic structural diagram of a random access device according to another embodiment of the present application.

Fig. 13 is a schematic structural diagram of a communication device according to an embodiment of the present application.

Fig. 14 is a schematic structural view of a communication device of the present application.

Fig. 15 is a schematic hardware structure of a terminal according to an embodiment of the present application.

Fig. 16 is a schematic hardware structure of a network device according to an embodiment of the present application.

Detailed Description

The technical solutions of the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. According to embodiments of the present application, every other embodiment obtained by a person of ordinary skill in the art falls within the scope of protection of the present application.

The terms first, second and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in sequences other than those illustrated or otherwise described herein, and that the "first" and "second" distinguishing between objects generally are not limited in number to the extent that the first object may, for example, be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/" generally means a relationship in which the associated object is an "or" before and after.

It should be noted that the techniques described in the embodiments of the present application are not limited to long term evolution (Long Term Evolution, LTE)/LTE evolution (LTE-Advanced, LTE-a) systems, but may also be used in other wireless communication systems, such as code division multiple access (Code Division Multiple Access, CDMA), time division multiple access (Time Division Multiple Access, TDMA), frequency division multiple access (Frequency Division Multiple Access, FDMA), orthogonal frequency division multiple access (Orthogonal Frequency Division Multiple Access, OFDMA), single carrier frequency division multiple access (Single-carrier Frequency Division Multiple Access, SC-FDMA), and other systems. The terms "system" and "network" in embodiments of the application are often used interchangeably, and the techniques described may be used for both the above-mentioned systems and radio technologies, as well as other systems and radio technologies. The following description describes a New Radio (NR) system for exemplary purposes and NR terminology is used in much of the following description, but these techniques may also be applied to applications other than NR system applications, such as 6 th Generation (6G) communication systems.

Fig. 1 shows a block diagram of a wireless communication system to which an embodiment of the present application is applicable. The wireless communication system includes a terminal 11 and a network device 12. The terminal 11 may be a Mobile phone, a tablet Computer (Tablet Personal Computer), a Laptop (Laptop Computer) or a terminal-side device called a notebook, a Personal digital assistant (Personal DIGITAL ASSISTANT, PDA), a palm Computer, a netbook, an ultra-Mobile Personal Computer (ultra-Mobile Personal Computer, UMPC), a Mobile internet appliance (Mobile INTERNET DEVICE, MID), an augmented reality (augmented reality, AR)/Virtual Reality (VR) device, a robot, a wearable device (Wearable Device), a vehicle-mounted device (VUE), a pedestrian terminal (PUE), a smart home (home device with a wireless communication function such as a refrigerator, a television, a washing machine, furniture, etc.), a game machine, a Personal Computer (Personal Computer, a PC), a teller machine, or a self-service machine, etc., and the wearable device includes a smart watch, a smart bracelet, a smart earphone, a smart glasses, a smart (smart bracelet, a smart, a necklace, a smart ankle, a smart foot chain, etc.), a smart ring, a smart wear, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiment of the present application. The network-side device 12 may include an access network device or a core network device, where the access network device 12 may also be referred to as a radio access network device, a radio access network (Radio Access Network, RAN), a radio access network function, or a radio access network element. Access network device 12 may include a base station, a WLAN access Point, a WiFi node, or the like, which may be referred to as a node B, an evolved node B (eNB), an access Point, a base transceiver station (Base Transceiver Station, BTS), a radio base station, a radio transceiver, a Basic service set (Basic SERVICE SET, BSS), an Extended service set (Extended SERVICE SET, ESS), a home node B, a home evolved node B, a transmission and reception Point (TRANSMITTING RECEIVING Point, TRP), or some other suitable terminology in the art, and the base station is not limited to a particular technical vocabulary so long as the same technical effect is achieved, and it should be noted that in the embodiment of the present application, only a base station in an NR system is described as an example, and the specific type of the base station is not limited.

In order to save energy for the network side and ensure the capacity of the network side as much as possible, the embodiments of the present application provide a random access method, a device, a terminal, a communication method, a device, and a network side device, which are described in detail below with reference to the accompanying drawings.

Firstly, a random access method provided by the embodiment of the application is explained.

As shown in fig. 2, a random access method according to an embodiment of the present application may include:

Step 201, a terminal receives first information about a second access object group sent by a network side device through a first access object, wherein the second access object group contains one or more second access objects different from the first access object.

Among them, the access object may include one of a carrier (carrier), a Cell (Cell), and a Bandwidth Part (BWP). The random access method provided by the embodiment of the application aims at a multi-access object scene, and is mainly exemplified by a multi-carrier scene.

In one embodiment, in a multi-carrier scenario, the first access object may be an anchor carrier (anchor carrier) and the second access object may be a non-anchor carrier (non-anchor carrier). On the anchor carrier, the UE can obtain system information for the anchor carrier (systeminformation) and necessary system information for other non-anchor carriers (NECESSARY SYSTEMINFORMATION). And the UE may perform at least one of Random access (Random ACCESS CHANNEL, RACH), data transmission, and data reception on any of the anchor carrier and the non-anchor carrier based on the system information obtained from the anchor carrier.

In another embodiment, in a multi-carrier scenario, the first access object may be a carrier that normally transmits SSBs, the second access object may be a carrier that does not transmit SSBs (SSB-LESS CARRIER), or the second access object may be a carrier that supports on-demand SSB transmission (on-demand SSB carrier).

In an embodiment of the application, the SSB comprises at least one of a synchronization signal block (Synchronization Signal Block, SSB) and a physical broadcast channel block (Physical Broadcast Channel block).

The random access method provided by the embodiment of the application is suitable for a scenario that the network side equipment does not configure the system information SIB of the second access object or only configures part of SIB on the first access object (namely, the first information does not contain the system information SIB of the second access object or only contains part of SIB of the second access object), and the scenarios can include:

Scenario 1a first access object is configured with wake-up signal (WUS) configuration information that triggers each second access object in the second access object group to send an SIB, all second access objects in the second access object group send SSBs normally and perform normal RACH listening (monitoring), but do not send SIB1 (SIB 1 transmission requires WUS triggering).

Scene 2. The first access object is configured with WUS configuration information triggering each second access object of the second access object group to send SIB, all second access objects in the second access object group do not send SSB, and the first access object is used as a reference access object to perform normal RACH monitoring, and SIB1 is not sent (SIB 1 sending requires WUS triggering).

And 3, configuring WUS configuration information triggering the second access object group to send SSB and SIB1 on the first access object, wherein all second access objects in the second access object group do not send SSB, do normal RACH monitoring, and do not send SIB1 (the SIB1 is sent and needs WUS triggering).

And 4, configuring WUS configuration information triggering the second access object group to send SIB1 and performing RACH monitoring on the first access object, wherein all second access objects in the second access object group send SSB or do not send SSB (taking the first access object as a reference access object), do not perform normal RACH monitoring, and do not send SIB1 (the SIB1 is sent and needs WUS triggering).

Scene 5. The first access object is configured with WUS configuration for triggering the second access object group to send SSB and SIB1 and carrying out RACH monitoring, and all the second access objects in the second access object group do not send SSB, do not carry out normal RACH monitoring, and do not send SIB1 (the SIB1 is sent and needs WUS triggering).

The first information can be sent by the first access object through a broadcast message, or default that the first information is the same as the corresponding information of the first access object.

Wherein the first information corresponds to at least one second access object of the second access object group, and the first information may include at least one of:

1) Triggering the at least one second access object to send wake-up signal WUS configuration information of an SSB, or triggering the SSB of the at least one second access object to adapt to the adjusted WUS configuration information, wherein the SSB includes at least one of a synchronization signal block and a physical broadcast channel block;

2) Triggering the at least one second access object to send the WUS configuration information of the SIB, or triggering the SIB of the at least one second access object to adapt to the adjusted WUS configuration information;

3) Triggering WUS configuration information of Random Access Channel (RACH) monitoring of the at least one second access object, or triggering WUS configuration information of RACH monitoring adaptation adjustment of the at least one second access object;

4) The relevant configuration information of the SSB currently being sent by the at least one second access object may specifically include at least one of the following:

whether the at least one second access object is sending an SSB;

at least one of a frequency point of SSB, an SSB transmission period, and the number of SSBs in one transmission period, which are being transmitted by the at least one second access object;

The at least one second access object is transmitting SSB, and the transmission mode includes one of a normal transmission mode, a power saving transmission mode, an aggregation (compact) transmission mode, a long period transmission mode (a transmission period of SSB is long), and an on-demand (on-demand) transmission mode, wherein the power saving transmission mode may be a reduced transmission mode in which only a primary synchronization signal (Primary Synchronization Signal, PSS) and a secondary synchronization signal (Secondary Synchronization Signal, SSS) are transmitted, and the aggregation transmission mode may be a transmission mode in which a time domain interval (gap) does not exist between SSBs.

5) The relevant configuration information of the SIB currently being transmitted by the at least one second access object may specifically include at least one of the following:

whether the at least one second access object transmits a SIB;

a transmission period of the SIB being transmitted by the at least one second access object;

configuration information of at least one of a Physical Downlink Control Channel (PDCCH) and a control resource set associated with the SIB which is being transmitted by the at least one second access object;

A transmission mode of a SIB being transmitted by the at least one second access object, the transmission mode including one of a normal transmission mode, a power saving transmission mode, an aggregation (compact) transmission mode, a long period transmission mode (a transmission period of the SIB is long), and an on-demand (on-demand) transmission mode. The power saving transmission mode may be a simplified transmission mode in which only the primary synchronization signal (Primary Synchronization Signal, PSS) and the secondary synchronization signal (Secondary Synchronization Signal, SSS) are transmitted, and the aggregated transmission mode may be a transmission mode in which a time domain interval (gap) does not exist between the SIB1 s.

6) The relevant configuration information of RACH listening behavior where the at least one second access object is currently located may specifically include at least one of the following:

whether the at least one second access object performs RACH listening;

at least one of a transmission period of RACH, the number of RACH in one transmission period, RACH frequency domain resource configuration information, and RACH time domain resource configuration information that the at least one second access object is listening to;

The at least one second access object listens to the listening mode of the RACH, the listening mode comprising one of a normal listening mode, a reduced listening mode (e.g., reducing RO transmission opportunities (reduced RO opportunity)), an aggregate listening mode, and an on-demand (on-demand) listening mode, wherein the reduced listening mode may comprise reducing RO transmission opportunities (reduced RO opportunity), the aggregate listening mode may be a listening mode without a time-domain interval (gap) between ROs, the RO being an acronym for physical random access channel opportunities (PRACH Occasion).

7) The relevant configuration information of the SSB sent after the WUS trigger is successful may specifically include at least one of the following:

after the WUS trigger is successful, at least one of the frequency point of the SSB, the period of the SSB and the number of the SSB in one transmission period is transmitted by the at least one second access object;

after the WUS trigger is successful, the at least one second access object sends a monitoring window of the SSB, namely the UE monitors the SSB in the monitoring window;

After the WUS trigger is successful, the at least one second access object actually sends at least one time domain resource index of the SSB or a position of at least one time domain resource;

after the WUS trigger is successful, at least one of a transmission time length of the SSB, the number of SSB transmission times and the number of SSB transmission periods is transmitted by the at least one second access object;

After the WUS trigger is successful, the relative relation between the SSB sent by the at least one second access object and the SSB sent by the first access object in at least one of a time domain, a frequency domain and a space domain;

After the WUS trigger is successful, the time domain resource location of the first SSB or the first SIB transmitted by the at least one second access object is transmitted, for example, in the last SSB period of X slots/symbols after the transmission time of the trigger signal (WUS);

after the WUS trigger is successful, the at least one second access object transmits a transmission mode of the SSB, where the transmission mode includes one of a normal transmission mode, a power saving transmission mode (e.g., only the PSS and the SSS are transmitted), an aggregate transmission mode (e.g., no time-domain interval between the SSBs), a long-period transmission mode (SSB period is longer), and an on-demand (on-demand) transmission mode.

8) The relevant configuration information of the SIB sent after the WUS trigger is successful may specifically include at least one of the following:

After the WUS trigger is successful, the at least one second object sends a sending period of the SIB, and configuration information of at least one of a physical downlink control channel (Physical Downlink Control Channel, PDCCH) and a control resource set (CORESET) carrying scheduling information of the SIB;

After the WUS trigger is successful, the at least one second object sends a monitoring window of the SIB, namely the UE monitors the SIB in the monitoring window;

After the WUS trigger is successful, the at least one second object transmits one of the transmission time length, the transmission times and the number of transmission periods of the SIB, for example, one of the transmission time length, the transmission times and the number of transmission periods of the SIB 1;

After the WUS trigger is successful, the at least one second object sends frequency domain resource information of SIB, where the frequency domain resource information includes at least one of a frequency domain resource starting position (for example, a carrier wave, BWP, or a position of a frequency band where the frequency domain resource is located), a frequency band number occupied by the frequency domain resource, and a bandwidth size of a signal;

After the WUS trigger is successful, the at least one second object transmits time domain resource information of the SIB, where the time domain resource information includes at least one of a time domain resource location (e.g., relative to an offset between synchronization/broadcast channels), a size of a listening window, a period of the listening window, a number of time domain repeated transmissions, and a time domain repeated transmission mode;

After the WUS trigger is successful, the at least one second object transmits a transmission mode of the SIB, where the transmission mode includes one of a normal transmission mode, a power saving transmission mode, an aggregate transmission mode, a long period transmission mode, and an on-demand transmission mode. The energy-saving transmission mode may be a simplified transmission mode in which only core configuration information such as RACH is transmitted, and the aggregated transmission mode may be a transmission mode in which a time domain interval (gap) does not exist between SIB1 s.

9) The related configuration information of RACH listening after success triggered by WUS may specifically include:

After the WUS trigger is successful, the at least one second access object listens for at least one of a period of RACH, a number of listening RACH, frequency domain resource configuration information of listening RACH, time domain resource configuration information of listening RACH, and a listening mode of listening RACH, wherein the listening mode includes one of a normal listening mode, a reduced listening mode (e.g., reducing RO opportunities), an aggregated listening mode (no time domain interval between ROs), and an on-demand listening mode.

10 The characteristic information of the at least one second access object itself may specifically include at least one of the following:

identification information of the at least one second access object;

whether the at least one second access object can take the first access object as a reference access object;

whether the at least one second access object is co-located (co-located) with the first access object;

Whether the at least one second access object is in the same timing advance Group (TIMING ADVANCE Group, TAG) as the first access object;

whether the at least one second access object has a quasi co-located (Quasi Co Location, QCL) relationship with the first access object;

a reference access object of the at least one second access object;

An access object co-located with the at least one second access object;

an access object located at the same TAG as the at least one second access object;

an access object having a QCL relationship with the at least one second access object;

whether the at least one second access object is in a Bar forbidden state;

the priority of the at least one second access object when the UE performs random access channel selection;

Whether the at least one second access object is set to a Bar state for a first type of UE, wherein the first type includes at least one of reduced capability (Reduced Capability, redcap), non-terrestrial Network (Non-TERRESTRIAL NETWORK, NTN), and support for power saving (Network ENERGY SAVING, NES) functions;

the at least one second access object allows a characteristic value N of a UE ID of random access, for example, a UE with UE ID mod carrier number=n may perform random access on the carrier;

Whether the at least one second access object supports UE camping;

Whether the at least one second access object is a suitable Cell (useable Cell);

whether the at least one second access object supports cell selection and/or cell reselection;

The partial system information of the at least one second access object includes at least one of public land mobile network (Public Land Mobile Network, PLMN) information, related configuration information of Cell selection (Cell selection) criteria, related configuration information of Cell reselection (Cell reselection) criteria, and Cell Bar (Cell Bar) information.

Wherein the WUS configuration information included in the first information may include at least one of:

1) The synchronization reference configuration information of WUS may specifically include at least one of the following:

At least one of SSB, channel state Information reference signal (CHANNEL STATE Information-REFERENCE SIGNAL, CSI-RS) and tracking reference signal (TRACKING REFERENCE SIGNAL, TRS) of the first access object;

GPS time (GPS TIMING).

2) The resource configuration information of WUS may specifically include at least one of the following:

time domain resource information;

frequency domain resource information;

the signal sequence configuration information, for example, a preamble packet, may specifically indicate a preamble packet index, indicating that the set of preambles is used to trigger SSBs of the at least one second access object.

3) The power configuration information of WUS may specifically include at least one of the following:

Signal initial power;

signal power step-up.

4) The repeated sending configuration information of WUS may specifically include at least one of the following:

the number of repetitions of a single transmission of a signal;

maximum number of repetitions of channel transmission.

5) The airspace parameter configuration information of WUS may specifically include at least one of the following:

correspondence of WUS and SSB of the first access object;

correspondence of WUS and SSB of the at least one second access object;

Correspondence of WUS and SSB of the second access object group.

6) The WUS' transmit timer (timer) configuration information, the timer is used to avoid that WUS is transmitted too often, and the timer is generally started after WUS is transmitted, and WUS is not allowed to be repeatedly transmitted until the timer expires.

Wherein the form of the WUS signal comprises at least one of:

RACH;

Msg1;

A preamble sequence (preamble);

A Sounding reference signal (Sounding REFERENCE SIGNAL, SRS);

physical uplink control channel (Physical Uplink Control Channel, PUCCH).

The configuration mode of the resource configuration information of the WUS comprises at least one of the following steps:

Configuring a signal resource list in the first information, wherein each element of the signal resource list corresponds to the index size of the second access object or the second access object group one by one, and one element in the signal resource list comprises one or more resources;

configuring a signal resource list in the first information, wherein each element of the signal resource list explicitly corresponds to the second access object or the second access object group index;

Configuring a candidate resource set in the first information, wherein one or more resources in the candidate resource set correspond to a resource number, one resource number corresponds to an index of the second access object or the second access object group, and the resource number is determined according to at least one of a time domain, a frequency domain and a space domain;

one or more signal resources are configured for the second access object or the second group of access objects in the first information.

Wherein, the signal resources configured by the resource configuration information of the WUS include at least one of the following:

the time-frequency resource is the same as the time-frequency resource of the public RACH on the first access object or the second access object group, namely the same video resource is shared with the public RACH on the first access object;

The time-frequency resource is a time-frequency resource of a special RACH which is specially used for triggering SSB/SIB transmission and/or RACH monitoring on the first access object or the second access object group, wherein the time-frequency resource of the special RACH can be a completely different time-frequency resource adopted by a public RACH on the first access object or can be a partial resource of the public RACH time-frequency resource on the first access object;

The time-frequency resource is the time-frequency resource of the special SRS/PUCCH used for triggering SSB/SIB transmission and/or RACH monitoring on the first access object or the second access object group.

The grouping mode of the second access object group comprises at least one of the following:

Configured by a network side device;

is specified by the protocol.

Wherein the grouping rule of the second access object group includes at least one of:

the second access objects in the same frequency band (band) are a group;

The second access objects in the same frequency band interval are a group;

The same second access object of at least one of initial BWP (Initial BWP), activation BWP (active BWP), SSB, and SCS is a group;

The second access objects with the same transmission mode are a group, wherein the transmission mode is related to at least one of whether to transmit SSB, whether to perform RACH monitoring, whether to support on-demand transmission SSB (on-demand SSB) and the like;

The co-located second access objects are a group;

the SSB sends a group of second access objects with consistent periods.

Step 202, selecting a target access object for performing a first operation from the first access object and the second access object group according to the first information and the first rule, wherein the first operation includes camping or random access, and the access object includes one of a carrier, a cell and a bandwidth part BWP.

Wherein the first rule may be related to at least one of:

one or more access objects which are indicated or configured by the network side equipment and can be randomly accessed by the terminal;

Defaulting an access object to be randomly accessed by the terminal to be the first access object;

Bar state information of the second access object;

an index value of the second access object;

The center frequency of the second access object;

-a subcarrier spacing (SubCarrier Spacing, SCS) of the second access object;

An identification of the second access object;

a frequency interval between the second access object and the first access object;

whether the second access object performs normal RACH monitoring or not;

whether the second access object normally transmits SSB;

Whether the second access object normally transmits SIB;

whether the second access object meets at least two of normal RACH monitoring, normal SSB sending and SIB sending;

the number of times WUS needs to be sent to the second access object;

the priority of the second access object;

A signal strength measurement of a reference signal of the second access object, the signal strength comprising at least one of a reference signal received Power (REFERENCE SIGNAL RECEIVING Power, RSRP) and a signal-to-interference-and-noise ratio (Signal to Interference plus Noise Ratio, SINR);

Randomly generated access object indexes;

the weight value of the second access object;

randomly generated access object weight values;

whether the first access object is a suitable cell;

whether the second access object is a suitable cell.

The priority of the second access object may be explicitly indicated by the network side device, or the priority of the second access object may be related to at least one of the following:

① The transmission mode of the second access object includes one of whether to normally transmit SSB, whether to support on-demand SSB transmission, and whether to normally monitor RACH, for example, the relationship between the priority of the second access object and the transmission mode may be:

The priority of the second access object which normally transmits the SSB takes the first access object as a reference and does not transmit the SSB > the priority of the second access object which transmits the SSB according to the requirement;

priority of the second access object that normally transmits SIB > priority of the second access object that transmits SIB on demand;

priority of the second access object that normally listens to RACH > priority of the second access object that listens to RACH on demand.

② The frequency band interval size of the second access object and the first access object;

③ And the number of the second access object.

In the following, two examples are described how the target access object performing the first operation is selected from the first access object and the second access object group according to the first information and the first rule in step 202, and other examples will be referred to in the following specific embodiments, which are not described herein in detail.

First example

The selecting, according to the first information and the first rule, a target access object for performing a first operation in the first access object and the second access object group may include:

determining whether the first access object is a suitable cell;

Selecting the first access object as a target access object under the condition that the first access object is a proper cell;

In case the first access object is not a suitable cell, one of the first, second and third steps is performed.

Wherein the first step comprises:

Determining whether at least one second access object is a suitable cell according to a reference signal measurement result corresponding to at least one second access object in the second access object group and a system information SIB (system information block) sent by the at least one second access object triggered by WUS;

And selecting a suitable cell from the at least one second access object as a target access object for performing the first operation according to a first rule in the case that one or more of the at least one second access object is a suitable cell.

Wherein the second step comprises:

Determining whether at least one second access object is a suitable cell according to a reference signal measurement result corresponding to at least one second access object in the second access object group and a partial SIB of the at least one second access object contained by the first information;

And if one or more second access objects in the at least one second access object are suitable cells, selecting one suitable cell from the at least one second access object according to a first rule, and if the terminal does not acquire the SIB of the suitable cell, sending the WUS triggering SIB sending to the suitable cell, and taking the suitable cell as a target access object for executing the first operation after receiving the SIB.

Wherein the third step comprises:

and ignoring the second access object, and searching other suitable cells as target access objects for performing the operation.

Further, the searching for other suitable cells as the target access object for performing the first operation may include:

Searching a proper cell from one or more second access objects in the second access object group as a target access object for executing operation;

searching for a suitable cell from one or more third access objects in a third access object group as a target access object to be operated, wherein the third access object group comprises access objects meeting a third condition;

Wherein the third condition includes at least one of:

taking the first access object as a reference;

co-located with the first access object;

and the continuous access object which belongs to the same frequency band as the first access object.

Second example

The selecting a target access object for performing a first operation in the first access object and the second access object group according to the first information and the first rule may include performing a fourth step or a fifth step.

Wherein the fourth step comprises:

determining whether the first access object is a proper cell or not according to the reference signal measurement result of the first access object and the system information SIB of the first access object;

Determining whether at least one second access object is a suitable cell according to a reference signal measurement result of at least one second access object in the second access object group and a partial SIB of the at least one second access object contained by the first information;

selecting a suitable cell from the first access object and the at least one second access object according to a first rule when the first access object is a suitable cell and one or more second access objects in the at least one second access object are suitable cells;

if the suitable cell is the first access object, the suitable cell is taken as a target access object for executing a first operation;

And if the suitable cell is the second access object, sending the WUS triggering SIB sending to the suitable cell, and taking the suitable cell as a target access object for executing the first operation after receiving the SIB.

Wherein the fifth step comprises:

determining whether the first access object is a proper cell or not according to the reference signal measurement result of the first access object and the SIB of the first access object;

Determining whether at least one second access object in the second access object group is a suitable cell according to a reference signal measurement result of the at least one second access object and SIB (SIB) sent by the at least one second access object triggered by WUS;

And selecting a proper cell from the first access object and the at least one second access object as a target access object for executing the first operation according to a first rule under the condition that the first access object is a proper cell and one or more second access objects in the at least one second access object are proper cells.

In the embodiment of the present application, the reference signal corresponding to the second access object may include at least one of reference signals such as SSB, CSI-RS, DRS, TRS, and the like. And if the reference signal is SSB, for a second access object, if there is SSB transmission on the second access object, SSB measurement is directly performed on the second access object to obtain SSB measurement results, and if there is no SSB transmission on the second access object, SSB measurement results transmitted on a fourth access object is used as SSB measurement results of the second access object, wherein the fourth access object may include one of a reference access object configured for the second access object, an access object co-located with the second access object, and an access object located in the same frequency band and continuous with the second access object, or if there is no SSB transmission on the second access object, SSB measurement results transmitted by the second access object after the WUS trigger is successful are used as SSB measurement results of the second access object.

In the random access method provided in the embodiment shown in fig. 2, since the network side device can provide the first information about the second access object group to the terminal through the first access object, so that the terminal can select the target access object to be subjected to residence or random access in the first access object and the second access object group according to the first information and the first rule, the second access object is not required to always send information such as SSB, SIB, etc., but to send SSB/SIB or RACH listening as required, so that the capacity of the network side can be ensured as much as possible while the network side saves energy.

Optionally, in a case that the target access object belongs to the second access object group, the first information includes WUS configuration information triggering the at least one second access object to send SSB/SIB, or WUS configuration information triggering SSB/SIB adaptation of the at least one second access object, and the first information includes WUS configuration information triggering RACH listening of a random access channel of the at least one second access object, or WUS configuration information triggering RACH listening adaptation of the at least one second access object, after step 202, before performing a first operation on the target access object, as shown in fig. 3, a random access method provided in an embodiment of the present application may further include:

Step 203, the terminal sends a wake-up signal WUS for the target access object, where the WUS is used to trigger the target access object to send at least one of SSB, SIB, and listening RACH.

In one example, the terminal transmitting a WUS for the target access object includes the terminal transmitting a WUS for the target access object if a first condition is satisfied.

Wherein the first condition may include at least one of:

1) The first access object is not a suitable cell;

2) The target access object is a suitable cell;

3) Performing intra-frequency (intra-frequency) or inter-frequency (inter-frequency) measurement on the target access object;

4) The target access object is in a first energy saving state, wherein the first energy saving state comprises at least one of not transmitting SSB, not transmitting SIB, not monitoring RACH, transmitting energy saving SSB (e.g. spark SSB), transmitting energy saving SIB (e.g. spark SIB), and energy saving monitoring RACH (e.g. SPARSE RACH monitoring), the energy saving SSB comprises one of lightweight SSB, simplified SSB, sparse SSB, and long period SSB;

5) The terminal is sensitive to access time delay;

6) The terminal is in the process of recovering from a link failure.

In another example, the method may further include the terminal assuming that the target access object is in a second power saving state before the transmitting the WUS for the target access object.

Wherein the second energy saving state may include at least one of:

SIB is not sent, SSB is normally sent, and normal RACH monitoring is carried out;

No SIB is sent, no SSB or an energy saving SSB (e.g. simplified SSB or spark SSB, etc.), the first access object is taken as a reference, and normal RACH listening is performed;

SIB is not sent, SSB is normally sent, and normal RACH monitoring is not carried out;

No SIB is sent, no SSB or power saving SSB is sent (e.g., simplified SSB or spark SSB, etc.), and no normal RACH listening is performed;

SIB is sent, SSB is normally sent, and normal RACH monitoring is not carried out;

SIB is sent, SSB or energy-saving SSB is not sent, and normal RACH monitoring is not carried out;

SIB is sent, SSB is normally sent, and normal RACH monitoring is carried out;

SIB is sent, SSB is not sent or energy-saving SSB is sent, and normal RACH monitoring is carried out;

wherein the energy saving SSB comprises one of a lightweight SSB, a simplified SSB, a sparse SSB, and a long period SSB.

In a first example, the terminal sending a WUS for the target access object may include the terminal sending a WUS for the target access object, which WUS may be used to achieve two purposes, one for triggering the target access object to send SSBs and/or send SIBs, and the other for triggering the target access object to listen to RACH.

In a second example, the terminal transmitting a WUS for the target access object may include the terminal transmitting a first WUS for the target access object, the first WUS being used to trigger the target access object to transmit SSBs and/or transmit SIBs, and the terminal transmitting a second WUS for the target access object, wherein the second WUS is used to trigger the target access object to monitor RACH.

Illustratively, the terminal transmitting a second WUS (point in time of transmitting the second WUS) for the target access object includes one of:

After Z slots/symbols/milliseconds after transmitting the first WUS, the terminal starts transmitting a second WUS for the target access object;

After receiving the feedback X slots/symbols/milliseconds for the first WUS, the terminal starts to send a second WUS for the target access object;

After receiving Y time slots/symbols/milliseconds after the first SSB or the first SIB which are sent after the target access object is successfully triggered, the terminal starts to send a second WUS aiming at the target access object;

The terminal transmits a second WUS aiming at the target access object under the condition that the transmission times of the first WUS reach the maximum value;

Starting a first timer after the first WUS is sent, and after the first timer is overtime, the terminal sends a second WUS aiming at the target access object.

The random access method provided in the embodiment shown in fig. 3 can trigger the second access object to send SSB/SIB or perform RACH interception as needed (on-demand), instead of continuously sending SSB/SIB or continuously performing RACH interception, or not continuously sending SSB/SIB or continuously performing RACH interception, so that the capacity of the network side can be guaranteed as much as possible while saving energy for the network side device.

Optionally, in a case where the WUS is used to trigger SSB/SIB transmission, as shown in fig. 4, the random access method provided by the embodiment of the present application may further include:

and the terminal monitors SSB/SIB sent by the target access object.

It should be noted that, whether the UE transmits one WUS or two WUS (the first WUS and the second WUS) for the target access object, the UE may monitor the SSB/SIB position. Specifically, in the case that the UE transmits one WUS for the target access object, the UE listens to the SSB/SIB location after transmitting the WUS, and in the case that the UE transmits two WUS (the first WUS and the second WUS) for the target access object, the UE may listen to the SSB/SIB location after transmitting the first WUS.

Specifically, the terminal monitoring the SSB sent by the target access object (a time point of monitoring the SSB sent by the target access object) may specifically include one of the following:

Starting a third timer after the WUS is sent, and starting to monitor SSB/SIB sent by the target access object by the terminal after the third timer is overtime;

after C time slots/symbols/milliseconds after the WUS is sent, the terminal starts to monitor SSB/SIB sent by the target access object;

after the WUS is sent out, the terminal starts to monitor SSB/SIB sent by the target access object;

and in the SSB monitoring window configured in the first information, the terminal monitors SSB/SIB sent by the target access object.

The embodiment shown in fig. 4 provides a random access method, which can trigger the target access object (a second access object) to send SSB as required (on-demand), so that RACH can be prepared for the target access object, and the capacity of the network side is increased.

Optionally, as shown in fig. 5, the random access method provided by the embodiment of the present application may further include:

step 205, the terminal initiates the first operation to the target access object.

In case the UE transmits one WUS for a target access object, the UE initiates the first operation to the target access object after transmitting the WUS, and in case the UE transmits two WUS (the first WUS and the second WUS) for the target access object, the UE may initiate the first operation to the target access object after transmitting the second WUS. Specifically, the target access object is a second access object, and step 205 (a time point when the first operation is initiated to the target access object) may specifically include one of the following:

Starting a second timer after the WUS is sent to the target access object, and after the second timer is overtime, the terminal initiates the first operation to the target access object (for example, initiating RACH, correspondingly, the WUS may be the same WUS used for triggering SSB sending and RACH monitoring, or the second WUS described above);

After a time slots/symbols/milliseconds after sending WUS to the target access object, the terminal initiates the first operation to the target access object (for example, initiates RACH, and correspondingly, the WUS may be the same WUS used for triggering SSB sending and RACH monitoring, or may be the second WUS described above);

After receiving B slots/symbols/milliseconds after feedback of WUS for the target access object, the terminal initiates the first operation (e.g. initiates RACH, and correspondingly, the WUS may be the same WUS used to trigger SSB transmission and RACH listening, or the second WUS described above) to the target access object.

Optionally, the random access method provided by the embodiment of the present application may further include:

In case the second condition is fulfilled, the terminal again sends WUS for the target access object.

Wherein the second condition may include, but is not limited to, at least one of:

1) SSB detection fails;

2) The random access times reach the maximum value;

the number of times of WUS transmission is smaller than or equal to the preset maximum number of times of transmission;

3) Feedback for the last WUS is not received;

4) The last WUS is used to trigger the transmission of SSB/SIB, and after receiving feedback for the last WUS signal, WUS for triggering RACH listening is retransmitted (i.e., WUS is transmitted again to trigger RACH listening);

5) Feedback for the last WUS is not received before the timer expires.

Optionally, the retransmitted WUS signal has at least one of the following characteristics:

1) Increasing the signal power;

2) The transmission time interval with the last WUS is larger than a preset time interval;

3) The frequency domain resources and the sequence resources are the same as the last WUS.

Note that, in the embodiment of the present application, the trigger SSB (trigger SSB) transmission, the trigger SSB adaptation (trigger SSB adaptation), the trigger normal SSB (trigger normal SSB) transmission, the trigger SSB return to the normal transmission mode, and the like refer to the same meaning, which all indicate that the second access object is triggered to change from the abnormal SSB transmission mode (the long-period SSB transmission mode, the simplified SSB transmission mode, or the on-demand SSB transmission mode) to the normal SSB transmission mode.

It should be further noted that, SIB1 and SIB refer to a system information block, and SIB1 is an example of SIB.

The application of the random access method provided by the embodiment of the application is described below with reference to specific embodiments.

Example 1

It is assumed that the terminal obtains first information about the second carriers Cell1, cell2 and Cell3 on the operating first carrier Cell 0.

In scenario 1 (the second carriers normally transmit SSB, perform normal RACH listening, and abnormally transmit SIB 1) mentioned above, WUS configuration information triggering each second carrier in the second carrier group to transmit SIB is configured on the first carrier, and all the second carriers in the second carrier group normally transmit SSB and perform normal RACH listening (monitoring), but abnormally transmit SIB1. Specific:

cell 0, belonging to band0, normally transmitting SSB and SIB1, and configuring WUS configuration information for triggering Cell1, cell2 and Cell3 to transmit SIB 1;

cell 1, belonging to Band 1, normally transmits SSB and performs normal RACH listening without SIB1

Cell2, belonging to Band 2, normally transmits SSB and performs normal RACH listening without SIB1

Cell3, belonging to Band3, normally transmits SSB and performs normal RACH listening without SIB1

In some embodiments, the first information about the second carrier set sent by the network side device through the first carrier may include at least one of the following:

1) Triggering at least one second carrier to send SIB or WUS configuration information for SIB adaptation adjustment;

2) The relevant configuration information of the SSB currently being transmitted by the at least one second carrier may specifically include at least one of the following:

Whether at least one second carrier is transmitting SSB;

At least one of a frequency point of SSB being transmitted by at least one second carrier, an SSB transmission period, and the number of SSBs in one transmission period;

A transmission mode of the SSB that the at least one second carrier is transmitting, the transmission mode including one of a normal transmission mode, a power saving transmission mode, an aggregate (compact) transmission mode, a long period transmission mode (a transmission period of the SSB is long), and an on-demand (on-demand) transmission mode, wherein the power saving transmission mode may be a reduced transmission mode that transmits only a primary synchronization signal (Primary Synchronization Signal, PSS) and a secondary synchronization signal (Secondary Synchronization Signal, SSS), and the aggregate transmission mode may be a transmission mode in which there is no time-domain interval (gap) between the SSBs.

3) The relevant configuration information of the SIB sent after the WUS trigger is successful may specifically include at least one of the following:

4) The characteristic information of the at least one second carrier wave may specifically include at least one of the following:

whether at least one second carrier is in a forbidden (Bar) state;

priority of at least one second carrier when the UE performs random access channel selection;

whether at least one second carrier is set to a Bar state for a first type of UE, wherein the first type includes at least one of reduced capability (Reduced Capability, redcap), non-terrestrial Network (Non-TERRESTRIAL NETWORK, NTN), and support power saving (Network ENERGY SAVING, NES) functions;

at least one second carrier allows a characteristic value N of a UE ID of random access, e.g., UE ID mod carrier number=n on which a UE may perform random access;

Whether the at least one second carrier supports UE camping;

whether the at least one second carrier is a suitable Cell (useable Cell);

whether the at least one second carrier supports cell selection and/or cell reselection;

Partial system information of at least one second carrier, the partial system information including at least one of public land mobile network (Public Land Mobile Network, PLMN) information, related configuration information of Cell selection (Cell selection) criteria, related configuration information of Cell reselection (Cell reselection) criteria, and Cell Bar information.

In some embodiments, the first carrier is preferentially selected when cell selection is performed to perform the first operation, although there is a special carrier (the second carrier from which information has been acquired).

In some embodiments, after the UE detects the first carrier and obtains the first information, if the first carrier is determined to be a suitable cell, the UE does not send WUS, and selects the first carrier to camp on (monitor paging);

If the first carrier is determined not to be a suitable cell (useable cell), performing at least one of:

■ The UE selects one or more carriers in the second carrier group to send the corresponding WUS and receive the SIB1 according to a first rule, and judges whether the one or more carriers are suitable cells according to the SSB measurement result and the SIB1 information;

If at least one carrier is a suitable cell, the UE selects one of the carriers to camp on (monitor paging) according to a first rule.

■ And judging according to the partial SIB1 information and the SSB measurement result, namely, the UE selects one or more carriers in the second carrier group as a target cell according to a first rule, and judges whether the one or more carriers are proper cells or not according to information (such as configuration information related to cell selection or cell reselection) corresponding to the carriers and the SSB measurement result.

If at least one carrier is a suitable cell, the UE selects one of the carriers according to a first rule and sends WUS thereto, acquires SIB1, and camps (monitor paging) on the carrier.

■ The UE ignores the second carrier set and seeks other suitable cells.

It should be noted that, the reference signal corresponding to the second carrier may include at least one of reference signals such as SSB, CSI-RS, DRS, TRS, and the like. And if the reference signal is SSB, for a second carrier, if there is SSB transmission on the second carrier, SSB measurement is directly performed on the second carrier to obtain an SSB measurement result, if there is no SSB transmission on the second carrier, the SSB measurement result transmitted on a fourth carrier is used as the SSB measurement result of the second carrier, where the fourth carrier may include one of a reference carrier configured for the second carrier, a carrier co-located with the second carrier, and carriers that are co-located with the second carrier and mutually continuous, or if there is no SSB transmission on the second carrier, the SSB measurement result transmitted by the second carrier after the WUS trigger is successful is used as the SSB measurement result of the second carrier (hereinafter, not described).

Optionally, in some embodiments, the UE performs at least one of the following to determine a target carrier to perform the first operation:

■ The UE selects one or more carriers in the first carrier and the second carrier group according to a first rule, judges whether the first carrier is a proper cell according to SSB measurement results and SIB1 configuration, and judges whether the one or more second carriers are proper cells according to SSB measurement results and SIB 1;

■ The UE selects one or more carriers in the first carrier and the second carrier group as target cells according to a first rule, wherein the first carrier is judged to be a proper cell according to SSB measurement results and SIB1 configuration, and the second carrier is judged to be a proper cell according to information (such as configuration information related to cell selection or cell reselection) corresponding to the carriers and SSB measurement results.

If at least one carrier is a proper cell, the UE selects one of the carriers according to a first rule, wherein if the carrier is a first carrier, the UE directly resides in the first carrier, and if the carrier is a carrier of a second carrier group, the WUS is sent to the carrier, and the SIB1 is acquired and then resides in the carrier.

In some embodiments, for a UE camping on a first carrier, intra-and inter-frequency measurements are made according to configuration information of the first carrier, if one second carrier of a second carrier group is determined to be the highest ranked cell (HIGHEST RANKED CELL) or a target cell for cell reselection, the UE performs at least one of the following to determine the target carrier to perform the first operation:

■ The WUS is sent to the second carrier to trigger the second carrier to send SIB1, and after the UE acquires the SIB1, whether the cell is a proper cell or not is judged;

if the cell is a proper cell, the UE performs cell reselection and resides in the cell;

■ And judging whether the cell is a proper cell, if so, transmitting WUS to acquire SIB1, and then carrying out cell reselection and residing in the cell.

In some embodiments, for a UE residing on a first carrier, if there is a need for random access, the UE defaults to directly initiate RACH on the first carrier for random access.

In some embodiments, for a UE residing on a first carrier, if there is a need for random access, the UE selects a target carrier for random access from the first carrier and the second carrier according to a first rule:

1) If the selected target carrier is the first carrier, directly initiating RACH to carry out random access;

2) If the selected target carrier is the carrier of the second carrier group, the WUS is sent to the carrier to acquire SIB1, and then RACH is initiated on the carrier to carry out random access according to the configuration information of the SIB 1.

In some embodiments, the first rule includes that the UE screens out target carriers meeting a condition, wherein the condition includes at least one of the following:

the target carrier is not bar to the UE;

the RSRP/RSRQ measured on the target carrier meets certain conditions, such as a threshold (threshold) or more;

The target carrier is a suitable cell for the UE.

In some embodiments, the UE selects one target carrier among all carriers (first carrier and/or second carrier group) or all screened carriers, including at least one of:

Randomly selecting a target carrier;

Randomly generating a weight value p, wherein each carrier is sequentially provided with a corresponding weight value p (1), p (2), and when p is in a range between p (0) +p (1) +p (i-1) and p (0) +p (1) +p (i), selecting a carrier i as a target carrier;

The network side indicates/configures a target carrier wave to be accessed randomly by the UE;

Selecting the carrier with the largest or smallest carrier index as a target carrier;

Selecting a carrier with the maximum or minimum carrier center frequency or in the middle as a target carrier;

Selecting the carrier with the largest or smallest SCS as a target carrier;

selecting a second carrier with the smallest frequency interval from the first carrier as a target carrier;

selecting the carrier with the least WUS times as a target carrier;

selecting the carrier with the highest priority as a target carrier;

The carrier with the largest RSRP/SINR measurement value of the reference signal is selected as the target carrier.

In scenario 2 mentioned above (the second carriers do not transmit SSB (with reference carrier), normal RACH listening is performed, and SIB1 is not normally transmitted), WUS configuration information triggering each second carrier in the second carrier group to transmit SIB is configured on the first carrier, at least one second carrier in the second carrier group does not transmit SSB, normal RACH listening (monitoring) is performed, but SIB1 is not normally transmitted. Specific:

Cell 0, belonging to band0, normally transmits SSB, and is configured with WUS configuration information triggering Cell1, cell2 and Cell3 to transmit SIB;

Cell 1, belonging to Band 1, does not send SSB (with the first carrier as a reference), and performs normal RACH monitoring without SIB1;

Cell 3 belongs to Band3, SSB is not transmitted (Cell 2 is taken as a reference), normal RACH listening is performed, and SIB1 is not transmitted.

Whether at least one second carrier is transmitting SSB;

whether at least one second carrier is in a forbidden (Bar) state;

Whether the at least one second carrier supports UE camping;

whether the at least one second carrier is a suitable Cell (useable Cell);

Partial system information of at least one second carrier, the partial system information including at least one of public land mobile network (Public Land Mobile Network, PLMN) information, related configuration information of Cell selection (Cell selection) criteria, related configuration information of Cell reselection (Cell reselection) criteria, and Cell Bar information;

whether at least one second carrier can take the first carrier as a reference carrier or not;

Whether at least one second carrier is co-located (co-located) with the first carrier;

whether at least one second carrier is in the same timing advance Group (TIMING ADVANCE Group, TAG) as the first carrier;

whether at least one second carrier has a quasi co-located (Quasi Co Location, QCL) relationship with the first carrier;

a reference carrier for at least one second carrier;

a carrier co-located with the at least one second carrier;

A carrier that is at the same TAG as the at least one second carrier;

a carrier having a QCL relationship with at least one second carrier.

In some embodiments, the first information may be transmitted by the first carrier through a broadcast message, or default the first information to be the same as the corresponding information of the first carrier, or default to be the same as the corresponding information of the first carrier when the first information is not configured, for example, at least one of PLMN information corresponding to the second carrier, related configuration information of a Cell selection (Cell selection) criterion, related configuration information of a Cell reselection (Cell reselection) criterion, and Cell barring (Cell Bar) information is the same as the corresponding information of the first carrier.

In some embodiments, after detecting the first carrier and acquiring the first information, if the first carrier is determined to be a suitable cell, the UE selects the first carrier to camp on (monitor paging), or selects one carrier to camp on (monitor paging) according to a first rule in the first carrier and/or the third carrier group, where,

■ The third carrier group includes at least one of a reference cell using the first carrier, co-located with the first carrier, and carriers that are on the same frequency band as the first carrier and are contiguous with each other.

If the first carrier is determined not to be a suitable cell, at least one of:

■ The UE selects one or more carriers in the second carrier group to send corresponding WUS and receive SIB1 according to the first rule, and judges whether the one or more carriers are suitable cells or not according to SSB measurement results and SIB1 information;

if at least one second carrier is a suitable cell, the UE selects one of the second carriers to camp (monitor paging) according to a first rule.

■ The UE selects one or more carriers in the second carrier group as a target cell according to the first rule, and determines whether the one or more carriers are suitable cells according to information corresponding to the carriers (for example, configuration information related to cell selection or cell reselection) and SSB measurement results.

If at least one second carrier is a suitable cell, the UE selects one of the second carriers according to a first rule and sends WUS thereto, and camps (monitor paging) on the carrier after obtaining SIB 1.

■ The UE ignores the second carrier set and seeks other suitable cells.

Optionally, in some embodiments, the UE performs one of the following to determine the target carrier on which to perform the first operation:

■ The UE selects one or more carriers in the first carrier and the second carrier group according to a first rule, and judges whether the first carrier is a proper cell according to SSB measurement results and SIB1 configuration;

If at least one carrier is a proper cell, the UE selects one of the carriers according to a first rule, that is, if the carrier is a first carrier, it resides directly on the first carrier, if the carrier is a carrier of a second carrier group,

The WUS is sent to the carrier, SIB1 is acquired, and then the carrier is subjected to residence (monitor paging).

the target carrier is not bar to the UE;

The target carrier is a suitable cell for the UE.

Randomly selecting a target carrier;

Selecting the carrier with the largest or smallest SCS as a target carrier;

selecting the carrier with the least WUS times as a target carrier;

selecting the carrier with the highest priority as a target carrier;

In scenario 3 mentioned above (where the second carriers do not transmit SSB and SIB1 and perform normal RACH listening), WUS configuration information is configured on the first carriers, which triggers each second carrier in the second carrier group to transmit SSB and SIB, and at least one second carrier in the second carrier group does not transmit SSB or transmit sparse (sparse) SSB, and needs to use WUS to trigger SSB transmission for normal RACH listening (monitoring). Specific:

cell 0, belonging to band0, normally transmits SSB, and is configured with WUS configuration information triggering Cell1, cell2 and Cell3 to transmit SIB1 and SSB;

Cell 1, belonging to Band 1, does not send SSB, and performs normal RACH monitoring, and does not send SIB1;

cell 2, belonging to Band 2, normally transmitting SSB, and performing normal RACH monitoring without SIB1;

cell3 belongs to Band3, sparse SSB is sent, normal RACH monitoring is carried out, and SIB1 is not sent.

In some embodiments, the first information about the second carrier group (e.g., cell1, cell2, and Cell 3) sent by the network side device through the first carrier may include at least one of:

2) Triggering at least one second carrier to send SSB or WUS configuration information for SSB adaptation;

3) The relevant configuration information of the SSB currently being transmitted by the at least one second carrier may specifically include at least one of the following:

Whether at least one second carrier is transmitting SSB;

4) The relevant configuration information of the SIB sent after the WUS trigger is successful may specifically include at least one of the following:

5) The relevant configuration information of the SSB sent after the WUS trigger is successful may specifically include at least one of the following:

6) The characteristic information of the at least one second carrier wave may specifically include at least one of the following:

whether at least one second carrier is in a forbidden (Bar) state;

Whether the at least one second carrier supports UE camping;

whether the at least one second carrier is a suitable Cell (useable Cell);

In some embodiments, after detecting the first carrier and acquiring the first information, the UE selects the first carrier to camp on (monitor paging) if the first carrier is determined to be a suitable cell, and at least one of the following if the first carrier is determined to be not a suitable cell:

■ The UE selects one or more carriers in the second carrier group to send corresponding WUS and receives SIB1 and/or SSB according to a first rule, and judges whether the one or more carriers are suitable cells or not according to SSB measurement results and SIB1 information;

■ And the UE selects one or more carriers in the second carrier group as a target cell according to a first rule, judges whether the one or more carriers are proper cells or not according to information (such as configuration information related to cell selection or cell reselection) corresponding to the carriers and SSB measurement results, and detects that the SSB measurement results are successfully sent by triggering SSB by WUS for the carriers without SSB in the second carrier group.

■ The UE ignores the second carrier set and seeks other suitable cells.

■ The UE selects one or more carriers in the first carrier and the second carrier group according to a first rule, judges whether the first carrier is a proper cell according to SSB measurement results and SIB1 configuration, and judges whether the one or more carriers are proper cells according to SSB measurement results and SIB1 configuration, and judges whether the second carrier is a proper cell according to SSB measurement results and SIB 1.

■ The UE selects one or more carriers in a first carrier and a second carrier group as a target cell according to a first rule, judges whether the first carrier is a proper cell according to an SSB measurement result and SIB1 configuration, judges whether the one or more carriers are proper cells according to information (such as configuration information related to cell selection or cell reselection) corresponding to the carrier in the second carrier group and the SSB measurement result, and judges whether the one or more carriers are proper cells according to the SSB measurement result and the SIB1 for the carrier without SSB transmission in the second carrier group, wherein the corresponding WUS is transmitted to receive the SIB1 and the SSB.

In some embodiments, for a UE camping on a first carrier, intra-and inter-frequency measurements are made according to configuration information of the first carrier, if one second carrier of the second carrier set is determined to be the highest ranked cell (HIGHEST RANKED CELL) or target cell for cell reselection, the UE performs at least one of:

■ And sending WUS to the carrier, acquiring SIB1 and/or SSB, and judging whether the cell is a proper cell or not.

If the cell is a proper cell, the UE performs cell reselection and camps on the cell.

■ And judging whether the cell is a proper cell, if so, transmitting the WUS to acquire SIB1, reselecting the cell and residing in the cell.

■ And sending WUS to the carrier wave to trigger the sending of SSB, after obtaining SSB measurement results, judging whether the cell is a proper cell or not by the UE, if so, sending the WUS to obtain SIB1, reselecting the cell and residing in the cell.

2) If the selected target carrier is the carrier of the second carrier group, the WUS is sent to the carrier to acquire SIB1 and/or SSB, and then RACH is initiated on the carrier to carry out random access according to the configuration of the SIB 1.

the target carrier is not bar to the UE;

the target carrier is a suitable cell for the UE;

the target carrier performs normal SSB transmission.

Randomly selecting a target carrier;

Selecting the carrier with the largest or smallest SCS as a target carrier;

selecting the carrier with the least WUS times as a target carrier;

selecting the carrier with the highest priority as a target carrier;

In scenario 4 mentioned above (the second carrier does not transmit SSB (with the first carrier as a reference), SIB1 is not transmitted, and normal RACH listening is not performed), WUS configuration information triggering each second carrier in the second carrier group to transmit SIB1 and perform RACH listening is configured on the first carrier, and all the second carriers in the second carrier group transmit SSB, or SSB (with the first carrier as a reference) is not transmitted, and normal RACH listening (monitoring) is not performed. Specific:

cell 0 is a WUS configuration information belonging to band0, normally transmitting SSB, and configured with SIB1 and SSB transmission triggering Cell1, cell2 and Cell3 and/or RACH monitoring;

Cell 1, belonging to Band 1, does not transmit SSB (with the first carrier as a reference), does not perform normal RACH monitoring, and does not transmit SIB1;

Cell 2, belonging to Band 2, normally transmitting SSB, not performing normal RACH monitoring, and not transmitting SIB1;

cell 3 belongs to Band3, SSB is not transmitted (taking the first carrier as a reference), normal RACH monitoring is not performed, and SIB1 is not transmitted.

For scenario 4, regarding the first information about the second carrier set sent by the network side device over the first carrier, how the UE determines the target object to perform the first operation according to the first rule and the first information, reference may be made to the description of scenario 2 above. Only where the two differ will be described herein. Specifically, the two are different in that:

for random access:

in some embodiments, when the selected random access carrier is a carrier of the second carrier group, the UE needs to send WUS to trigger the target carrier for RACH listening and then perform RACH random access procedure.

For WUS:

In some embodiments, the functionality of each WUS is single, e.g., a first WUS is used to trigger SIB1 transmission for the target carrier, and after SIB1 is detected, the UE then uses a second WUS to trigger RACH listening for the target carrier. The resource configuration information of the two WUSs is configured by the network side through Cell0 (first carrier), and the time-frequency resources sent by the two WUSs may be completely coincident resources or may be two independent sets of resources.

In some embodiments, two functions, triggering SIB1 transmission of the target carrier and triggering the target carrier for RACH listening, may also be accomplished by one WUS.

In scenario 5 mentioned above (second carriers do not transmit SSB, SIB1 is not transmitted, normal RACH listening is not performed), WUS configuration information triggering each second carrier in the second carrier group to transmit SSB, SIB1 and perform RACH listening is configured on the first carrier, at least one second carrier in the second carrier group does not transmit SSB, SIB1 is not transmitted, and normal RACH listening (monitoring) is not performed. Specific:

Cell 0 is a WUS configuration information belonging to band0, normally transmitting SSB, and configured with SIB1 and SSB transmission triggering Cell1, cell2 and Cell3 and RACH monitoring;

Cell 1, which belongs to Band 1, SSB is sent according to the requirement, normal RACH monitoring is not carried out, and SIB1 is not sent;

cell3 belongs to Band3, sparse SSB is sent, normal RACH monitoring is not carried out, and SIB1 is not sent.

For scenario 5, regarding the first information about the second carrier set sent by the network side device over the first carrier, how the UE determines the target object to perform the first operation according to the first rule and the first information, reference may be made to the description of scenario 3 above. Only where the two differ will be described herein. Specifically, the two are different in that:

for random access:

For WUS:

In some embodiments, the first WUS is used to trigger SIB1 transmission and SSB transmission of the target carrier, and after detecting SIB1 or SSB transmitted by the target carrier, the UE re-uses the second WUS to trigger RACH listening of the target carrier. The resource allocation of the two WUSs is configured by the network side through Cell0 (first carrier), and the time-frequency resources sent by the two WUSs may be completely coincident resources or may be two independent sets of resources. Taking the target carrier as Cell2 as an example, the flow of the UE sending WUS to initiate random access is shown in fig. 6.

Referring to fig. 6, the process may include:

step 601, the ue sends a first WUS to Cell2 through Cell0 to trigger Cell2 to send SSB and SIB1;

Step 602, the ue monitors SSB and SIB1 sent by Cell2 according to the first information;

step 603, the ue sends a second WUS to Cell2 through Cell0 to trigger Cell2 to perform RACH listening;

In step 604, the ue initiates random access to Cell2 according to the monitored SSB and SIB 1.

In some embodiments, three functions, namely SIB1 transmission of the trigger target carrier, SSB transmission and RACH monitoring of the trigger target carrier, can be completed through one WUS. Taking the target carrier as Cell2 as an example, the flow of the UE sending WUS to initiate random access is shown in fig. 7.

Referring to fig. 7, the process may include:

Step 701, the ue sends a first WUS to Cell2 through Cell0 to trigger SSB, SIB1 transmission and RACH listening;

Step 702, the ue monitors, according to the first information, the Cell2 to send SSB and SIB1;

in step 703, the ue initiates random access to Cell2 according to the monitored SSB and SIB 1.

In the second embodiment (when there are multiple carriers, the UE selects the carrier with the highest priority for RACH)

The terminal obtains first information about the second carriers Cell1, cell2 and Cell3 on the operating first carrier Cell0, specifically:

● Cell 0, which belongs to band0, normally transmits SSB, and configures WUS configuration information triggering SSB, SIB1 transmission and RACH monitoring of Cell1, cell2 and Cell 3;

● Cell 1, belonging to Band 1, transmitting SSB abnormally (with the first carrier as a reference), not performing normal RACH listening, transmitting SIB1 abnormally (on-demand SIB 1);

● Cell2, which belongs to Band 2, SSB is sent as required, normal RACH monitoring is not performed, and SIB1 is normally sent;

cell 3, belonging to Band 3, abnormally transmitting SSB (with the first carrier as reference), not performing normal RACH listening, abnormally transmitting SIB1 (on-demand SIB 1);

● Cell 4, belonging to Band 4, performing normal RACH monitoring by abnormally transmitting SSB (with the first carrier as a reference) and abnormally transmitting SIB1 (on-demand SIB 1);

● Cell 5, belonging to Band 5, abnormally transmits SSB (with the first carrier as a reference), performs normal RACH monitoring, and normally transmits SIB1.

In this embodiment, the UE selects a target carrier for random access according to the priority of the carrier:

● Carrier priority of normal transmission SSB > carrier priority of abnormal transmission SSB (with reference to the first carrier) > carrier priority of on-demand transmission SSB;

● Carrier priority of normal SIB transmission > carrier priority of SIB (on-demand SIB) is transmitted on demand;

● Carrier priority of normal listening RACH > carrier priority of listening RACH on demand.

It should be noted that, the on-demand SSB related to the embodiment of the present application means that the carrier supports an on-demand SSB transmission mode, that is, supports the UE to trigger the transmission of the normal SSB by WUS. On-demand SIB1 and On-DEMAND RACH monitoring are the same.

Embodiment III (when there are multiple carriers with different transmission modes or the same transmission mode, the UE selects the carrier with the least number of WUS transmissions for RACH)

The terminal obtains first information about the second carriers Cell1, cell2, cell3, cell4 and Cell5 on the operating first carrier Cell0, specifically:

● Cell 0, belonging to band0, normally transmitting SSB, performing normal RACH monitoring, and normally transmitting SIB1;

● Cell1, belonging to Band 1, abnormally transmitting SSB (taking SSB of a first carrier as reference), performing normal RACH monitoring, and normally transmitting SIB1;

● Cell 2, belonging to Band 2, transmitting SSB (on-demand SSB) on demand, performing normal RACH monitoring, and transmitting SIB1 (on-demand SIB 1) on demand;

● Cell 3, belonging to Band 3, normally transmitting SSB, not performing normal RACH monitoring, and transmitting SIB1 as required;

cell 4, belonging to Band 4, transmitting SSB abnormally (with SSB of the first carrier as reference), not performing normal RACH listening, and transmitting SIB1 normally;

● Cell 5, belonging to Band 5, SSB is sent on demand, normal RACH monitoring is not performed, SIB1 is sent on demand.

And the UE selects carriers on the second carrier group to carry out random access according to the principle that the WUS times are required to be transmitted to be minimum. In this embodiment, one WUS transmission is used to trigger either SIB1 and/or SSB transmissions or RACH listening. Specific:

● For Cell1, the UE may directly use SSB of the first carrier as a reference, and perform random access in Cell1 without sending WUS;

● For Cell2, two WUS transmissions are required to trigger SSB transmissions of Cell2 and transmissions of SIB1;

● For Cell3, two WUS transmissions are required to trigger SIB1 transmission and RACH listening of Cell 3;

● For Cell4, one WUS needs to be sent to trigger RACH listening of Cell 4;

For Cell5, two WUS needs to be sent, one triggering SSB and SIB1 transmissions and one triggering ARCH listening.

The above describes a random access method provided by the embodiment of the present application. Corresponding to the random access method, the embodiment of the application also provides a communication method, and the following description is made.

As shown in fig. 8, a communication method according to an embodiment of the present application may include:

In step 801, the network side device sends first information about a second access object group to the terminal through a first access object, where the second access object group includes one or more second access objects different from the first access object, and the first information is used for the terminal to select a target access object for performing a first operation, where the first operation includes camping or random access, and the access object includes one of a carrier, a cell, and a bandwidth part BWP.

In another embodiment, in a multi-carrier scenario, the first access object may be a carrier that normally transmits SSB, the second access object may be a carrier that does not transmit SSB (SSB-LESS CARRIER), or the second access object is a carrier that supports on-demand transmission of SSB (on-demand SSB carrier), where the first information may be transmitted by the first access object through a broadcast message, or default that the first information is the same as the corresponding information of the first access object.

whether the at least one second access object is sending an SSB;

whether the at least one second access object transmits a SIB;

whether the at least one second access object performs RACH listening;

identification information of the at least one second access object;

a reference access object of the at least one second access object;

An access object co-located with the at least one second access object;

whether the at least one second access object is in a Bar forbidden state;

Whether the at least one second access object supports UE camping;

GPS time (GPS TIMING).

time domain resource information;

frequency domain resource information;

Signal initial power;

signal power step-up.

the number of repetitions of a single transmission of a signal;

maximum number of repetitions of channel transmission.

correspondence of WUS and SSB of the first access object;

correspondence of WUS and SSB of the at least one second access object;

Correspondence of WUS and SSB of the second access object group.

Wherein the form of the WUS signal comprises at least one of:

RACH;

Msg1;

A preamble sequence (preamble);

A Sounding reference signal (Sounding REFERENCE SIGNAL, SRS);

physical uplink control channel (Physical Uplink Control Channel, PUCCH).

Configured by a network side device;

is specified by the protocol.

the second access objects in the same frequency band (band) are a group;

The second access objects in the same frequency band interval are a group;

The co-located second access objects are a group;

the SSB sends a group of second access objects with consistent periods.

For how the terminal selects the target access object for executing the first operation from the first access object and the second access object group according to the first information, please refer to the description of the embodiment shown in fig. 2 above, which is not repeated herein.

In the communication method provided in the embodiment shown in fig. 8, since the network side device may provide, to the terminal, first information about the second access object group through the first access object, where the first information includes system information SIB of the second access object, so that the terminal may select, according to the first information, a target access object to be subjected to residence or random access in the first access object and the second access object group, and the second access object is not required to continuously send information such as SSB, SIB, or send SSB as needed or perform RACH listening as needed, so that the capacity of the network side can be ensured as much as possible while the network side saves energy.

Optionally, in a case that the target access object belongs to the second access object group, the first information includes WUS configuration information triggering the at least one second access object to send SSB/SIB, or WUS configuration information triggering SSB/SIB adaptation of the at least one second access object, and the first information includes WUS configuration information triggering RACH listening of a random access channel of the at least one second access object, or WUS configuration information triggering RACH listening adaptation of the at least one second access object, a communication method provided by an embodiment of the present application may further include:

The target access object receives a wake-up signal WUS, wherein the WUS is configured to trigger the target access object to at least one of send SSB, send SIB, and monitor RACH.

In one example, the target access object receives a wake-up signal WUS, which the terminal transmits if a first condition is met.

Wherein the first condition may include at least one of:

1) The first access object is not a suitable cell;

2) The target access object is a suitable cell;

5) The terminal is sensitive to access time delay;

6) The terminal is in the process of recovering from a link failure.

In another example, the wake-up signal WUS for the target access object is sent by the terminal assuming that the target access object is in a second power saving state.

Wherein the second energy saving state may include at least one of:

SIB is sent, SSB is normally sent, and normal RACH monitoring is carried out;

In a first example, the target access object receiving the wake-up signal WUS may include the target access object receiving a WUS that may be used to achieve two purposes, one for triggering the target access object to send SSBs and/or send SIBs and the second for triggering the target access object to monitor RACH.

In a second example, the target access object receiving the wake-up signal WUS may include the target access object receiving a first WUS, the first WUS being configured to trigger the target access object to send SSBs and/or send SIBs, and the target access object receiving a second WUS, wherein the second WUS is configured to trigger the target access object to monitor RACH.

Illustratively, the target access object receiving the second WUS (point in time of receiving the second WUS) comprises one of:

The target access object receives a second WUS which starts to be sent after Z time slots/symbols/milliseconds after the terminal sends the first WUS;

the target access object receives a second WUS which starts to be sent after the terminal receives X time slots/symbols/milliseconds after feedback for the first WUS;

The target access object receives a second WUS which starts to be sent after the terminal receives a first SSB or Y time slots/symbols/milliseconds after a first SIB which is sent after the target access object is successfully triggered;

The target access object receives a second WUS sent by the terminal under the condition that the sending times of the first WUS reach the maximum value;

and the target access object receives a second WUS sent by the terminal after the first timer is overtime, wherein the first timer is started after the first WUS is sent.

According to the communication method provided by the embodiment, the second access object can be triggered to send the SSB or conduct RACH monitoring as required (on-demand), instead of continuously sending the SSB or continuously conducting the RACH monitoring all the time, and also not continuously sending the SSB or continuously conducting the RACH monitoring all the time, so that the capacity of the network side can be guaranteed as much as possible while energy is saved for the network side equipment.

Optionally, in the case that the WUS is used to trigger the target access object to send SSB/SIB, the communication method provided by the embodiment of the present application may further include that the target access object sends SSB/SIB. So that the target access object sends SSB/SIB as required (on-demand) under the triggering of WUS, thereby being capable of preparing for the UE to access the target access object and increasing the capacity of the network side.

Optionally, the communication method provided by the embodiment of the present application may further include:

The target access object listens for a first operation (e.g., random access) initiated by the terminal.

and the target access object receives the WUS which is sent again by the terminal under the condition that the second condition is met, so that the success rate of executing the first operation is improved.

1) SSB detection fails;

2) The random access times reach the maximum value;

3) Feedback for the last WUS is not received;

5) Feedback for the last WUS is not received before the timer expires.

1) Increasing the signal power;

The above describes a communication method applied to a network and thus a device according to an embodiment of the present application.

It should be noted that, in the random access method or the communication method provided by the embodiment of the present application, the execution subject may be a communication device. In the embodiment of the present application, a method for executing random access by a communication device is taken as an example, and the communication device provided by the embodiment of the present application is described.

A communication device according to an embodiment of the present application is described below with reference to the accompanying drawings. Since the communication device provided by the embodiment of the present application corresponds to a random access method provided by the embodiment of the present application, the description of the communication device provided by the embodiment of the present application is brief, and the detailed description of the embodiment of the present application can be referred to in the description of the embodiment of the method.

As shown in fig. 9, an embodiment of the present application provides a random access apparatus 900, and the apparatus 900 may include an information receiving module 901 and an access object selecting module 902.

An information receiving module 901, configured to receive first information about a second access object group sent by a network side device through a first access object, where the second access object group includes one or more second access objects different from the first access object.

In one embodiment, in a multi-carrier scenario, the first access object may be an anchor carrier (anchor carrier) and the second access object may be a non-anchor carrier (non-anchor carrier). On the anchor carrier, the UE can obtain system information of the anchor carrier (system information) and necessary system information of other non-anchor carriers (NECESSARY SYSTEM information). And the UE may perform at least one of Random access (Random ACCESS CHANNEL, RACH), data transmission, and data reception on any of the anchor carrier and the non-anchor carrier based on the system information obtained from the anchor carrier.

In another implementation manner, in a multi-carrier scenario, the first access object may be a carrier that normally transmits SSB, the second access object may be a carrier (SSB-LESS CARRIER) that does not transmit SSB, or the second access object is a carrier (on-demand SSB carrier) that supports on-demand transmission of SSB, in an embodiment of the present application, SSB includes at least one of a synchronization signal block (Synchronization Signal Block, SSB) and a physical broadcast channel block (Physical Broadcast Channel block).

whether the at least one second access object is sending an SSB;

whether the at least one second access object transmits a SIB;

whether the at least one second access object performs RACH listening;

identification information of the at least one second access object;

a reference access object of the at least one second access object;

An access object co-located with the at least one second access object;

whether the at least one second access object is in a Bar forbidden state;

Whether the at least one second access object supports UE camping;

GPS time (GPS TIMING).

time domain resource information;

frequency domain resource information;

Signal initial power;

signal power step-up.

the number of repetitions of a single transmission of a signal;

maximum number of repetitions of channel transmission.

correspondence of WUS and SSB of the first access object;

correspondence of WUS and SSB of the at least one second access object;

Correspondence of WUS and SSB of the second access object group.

Wherein the form of the WUS signal comprises at least one of:

RACH;

Msg1;

A preamble sequence (preamble);

A Sounding reference signal (Sounding REFERENCE SIGNAL, SRS);

physical uplink control channel (Physical Uplink Control Channel, PUCCH).

Configured by a network side device;

is specified by the protocol.

the second access objects in the same frequency band (band) are a group;

The second access objects in the same frequency band interval are a group;

The co-located second access objects are a group;

the SSB sends a group of second access objects with consistent periods.

An access object selection module 902, configured to select, according to the first information and a first rule, a target access object that performs a first operation in the first access object and the second access object group, where the first operation includes camping or random access, and the access object includes one of a carrier, a cell, and a bandwidth part BWP.

Bar state information of the second access object;

an index value of the second access object;

The center frequency of the second access object;

-a subcarrier spacing (SubCarrier Spacing, SCS) of the second access object;

An identification of the second access object;

whether the second access object performs normal RACH monitoring or not;

whether the second access object normally transmits SSB;

Whether the second access object normally transmits SIB;

the number of times WUS needs to be sent to the second access object;

the priority of the second access object;

Randomly generated access object indexes;

the weight value of the second access object;

randomly generated access object weight values;

whether the first access object is a suitable cell;

whether the second access object is a suitable cell.

③ And the number of the second access object.

In the following, two examples are described how the access object selection module 902 specifically selects, according to the first information and the first rule, a target access object for performing the first operation in the first access object and the second access object group, and in the following specific embodiments, other examples will be referred to, which will be described in detail below.

First example

The access object selection module 902 is specifically configured to:

determining whether the first access object is a suitable cell;

Wherein the first step comprises:

Wherein the second step comprises:

Wherein the third step comprises:

Wherein the third condition includes at least one of:

taking the first access object as a reference;

co-located with the first access object;

Second example

The access object selection module 902 is specifically operable to perform the fourth step or the fifth step.

Wherein the fourth step comprises:

Wherein the fifth step comprises:

In the random access apparatus provided in the embodiment shown in fig. 8, since the network side device may provide the first information about the second access object group to the terminal through the first access object, so that the terminal may select, according to the first information and the first rule, a target access object to be subjected to residence or random access in the first access object and the second access object group, and the second access object is not required to always send information such as SSB, SIB, or the like, but send SSB/SIB or RACH listening as required, so that the network side can save energy while ensuring the capacity of the network side as much as possible.

Optionally, as shown in fig. 10, a random access device 900 provided in an embodiment of the present application may further include:

A first WUS sending module 903, configured to send a wake-up signal WUS for the target access object if the target access object belongs to the second access object group, the first information includes WUS configuration information triggering the at least one second access object to send SSB/SIB, or WUS configuration information triggering SSB/SIB adaptation of the at least one second access object, and the first information includes WUS configuration information triggering random access channel RACH listening of the at least one second access object, or WUS configuration information triggering RACH listening adaptation of the at least one second access object, where the WUS is used to trigger the target access object to send at least one of SSB, send SIB, and listen RACH.

In one example, the first WUS sending module 903 is configured to send a WUS for the target access object if a first condition is met.

Wherein the first condition may include at least one of:

1) The first access object is not a suitable cell;

2) The target access object is a suitable cell;

5) The terminal is sensitive to access time delay;

6) The terminal is in the process of recovering from a link failure.

In another example, the apparatus may further comprise a presumption module for presuming that the target access object is in a second power saving state before the transmitting the WUS for the target access object.

Wherein the second energy saving state may include at least one of:

SIB is sent, SSB is normally sent, and normal RACH monitoring is carried out;

In a first example, the first WUS sending module 903 may be configured to send one WUS for the target access object, where the WUS may be configured to serve two purposes, one for triggering the target access object to send SSBs and/or send SIBs, and the other for triggering the target access object to listen to RACH.

In a second example, the first WUS sending module 903 may be configured to send a first WUS for the target access object, where the first WUS is configured to trigger the target access object to send SSBs and/or send SIBs, and send a second WUS for the target access object, where the second WUS is configured to trigger the target access object to listen to RACH.

Illustratively, the first WUS transmitting module 903 may be configured to:

Starting to transmit a second WUS for the target access object after Z slots/symbols/milliseconds after transmitting the first WUS;

After receiving the feedback for the first WUS, starting to transmit a second WUS for the target access object;

After receiving Y time slots/symbols/milliseconds after the first SSB or the first SIB which are sent after the target access object is successfully triggered, starting to send a second WUS aiming at the target access object;

Transmitting a second WUS for the target access object in case the number of transmissions of the first WUS reaches a maximum value;

Starting a first timer after the first WUS is sent, and sending a second WUS aiming at the target access object after the first timer is overtime.

The embodiment shown in fig. 10 provides a random access apparatus 900, which can trigger a second access object to send SSB or perform RACH listening as needed (on-demand), instead of continuously sending SSB or continuously performing RACH listening, or continuously not sending SSB or continuously not performing RACH listening, so that the capacity of the network side can be guaranteed as much as possible while saving energy for the network side device.

Optionally, as shown in fig. 11, a random access device 900 provided in an embodiment of the present application may further include:

and the SSB monitoring module 904 is configured to monitor SSB/SIB sent by the target access object if the WUS is used to trigger SSB/SIB sending.

Illustratively, the SSB listening module 904 is specifically operable for one of:

Starting a third timer after the WUS is sent, and starting to monitor SSB/SIB sent by the target access object after the third timer is overtime;

After C time slots/symbols/milliseconds after the WUS is sent, starting to monitor SSB/SIB sent by the target access object;

starting to monitor SSB/SIB sent by the target access object in the next time slot after the WUS is sent;

and monitoring SSB/SIB sent by the target access object in an SSB monitoring window configured in the first information.

The embodiment shown in fig. 11 provides a random access device 900, which can trigger the target access object (a second access object) to send SSB/SIB on demand (on-demand), so as to prepare RACH for the target access object, and increase the capacity of the network side.

Optionally, as shown in fig. 12, a random access device 900 provided in an embodiment of the present application may further include:

An operation initiation module 905 is configured to initiate the first operation to the target access object.

Illustratively, the target access object is a second access object, and the operation initiation module 905 (a point in time when the first operation is initiated to the target access object) is specifically configured to one of the following:

Starting a second timer after the WUS is sent to the target access object, and after the second timer expires, initiating the first operation (such as initiating RACH, corresponding to the WUS, which may be the same WUS used to trigger SSB sending and RACH listening, or the second WUS described above) to the target access object;

After a time slots/symbols/milliseconds after sending WUS to the target access object, initiating the first operation to the target access object (for example, initiating RACH, correspondingly, the WUS may be the same WUS used for triggering SSB sending and RACH monitoring, or may be the second WUS described above);

After receiving B slots/symbols/milliseconds after feedback of WUS for the target access object, the first operation is initiated to the target access object (e.g. RACH is initiated, and accordingly, the WUS may be the same WUS used to trigger SSB transmission and RACH listening, or the second WUS described above).

Optionally, the random access device 900 provided in the embodiment of the present application may further include:

And the second WUS sending module is configured to send a wake-up signal WUS for the target access object again if the second condition is met.

1) SSB detection fails;

2) The random access times reach the maximum value;

3) Feedback for the last WUS is not received;

5) Feedback for the last WUS is not received before the timer expires.

1) Increasing the signal power;

It should be noted that the apparatus shown in fig. 9 can implement the method shown in fig. 2 and achieve the same technical effects, so that the description is simpler, and reference is made to the description of the embodiment shown in fig. 2.

As shown in fig. 13, one embodiment of the present application provides a communication apparatus 1300, which apparatus 1300 may include an information transmitting module 1301.

An information sending module 1301, configured to send, to a terminal through a first access object, first information about a second access object group, where the second access object group includes one or more second access objects different from the first access object, where the first information is used for the terminal to select a target access object that performs a first operation, where the first operation includes camping or random access, and the access object includes one of a carrier, a cell, and a bandwidth part BWP.

whether the at least one second access object is sending an SSB;

whether the at least one second access object transmits a SIB;

whether the at least one second access object performs RACH listening;

identification information of the at least one second access object;

a reference access object of the at least one second access object;

An access object co-located with the at least one second access object;

whether the at least one second access object is in a Bar forbidden state;

Whether the at least one second access object supports UE camping;

GPS time (GPS TIMING).

time domain resource information;

frequency domain resource information;

Signal initial power;

signal power step-up.

the number of repetitions of a single transmission of a signal;

maximum number of repetitions of channel transmission.

correspondence of WUS and SSB of the first access object;

correspondence of WUS and SSB of the at least one second access object;

Correspondence of WUS and SSB of the second access object group.

Wherein the form of the WUS signal comprises at least one of:

RACH;

Msg1;

A preamble sequence (preamble);

A Sounding reference signal (Sounding REFERENCE SIGNAL, SRS);

physical uplink control channel (Physical Uplink Control Channel, PUCCH).

Configured by a network side device;

is specified by the protocol.

the second access objects in the same frequency band (band) are a group;

The second access objects in the same frequency band interval are a group;

The co-located second access objects are a group;

the SSB sends a group of second access objects with consistent periods.

It should be noted that the apparatus shown in fig. 13 can implement the method shown in fig. 8 and achieve the same technical effects, so that the description is simpler, and reference is made to the description of the embodiment shown in fig. 8.

Optionally, the communication apparatus 1300 provided in the embodiment of the present application may further include:

A first WUS receiving module, configured to receive a wake-up signal WUS when the target access object belongs to the second access object group, where the first information includes WUS configuration information triggering the at least one second access object to send SSB/SIB, or WUS configuration information triggering SSB/SIB adaptation of the at least one second access object, and the first information includes WUS configuration information triggering random access channel RACH listening of the at least one second access object, or WUS configuration information triggering RACH listening adaptation of the at least one second access object, where the WUS is used to trigger the target access object to send at least one of SSB, send SIB, and listen RACH.

Wherein the first condition may include at least one of:

1) The first access object is not a suitable cell;

2) The target access object is a suitable cell;

5) The terminal is sensitive to access time delay;

6) The terminal is in the process of recovering from a link failure.

Wherein the second energy saving state may include at least one of:

SIB is sent, SSB is normally sent, and normal RACH monitoring is carried out;

In a first example, the first WUS receiving module is configured to receive, by the target access object, one WUS for the target access object, where the WUS is configured to serve two purposes, one for triggering the target access object to send SSBs and/or send SIBs, and the other for triggering the target access object to monitor RACH.

In a second example, the first WUS receiving module is configured to receive, by the target access object, a first WUS for the target access object, where the first WUS is configured to trigger the target access object to send SSB and/or send SIB, and receive, by the target access object, a second WUS for the target access object, where the second WUS is configured to trigger the target access object to monitor RACH.

Illustratively, the first WUS receiving module is for one of:

the target access object receives Z time slots/symbols/milliseconds after the terminal sends the first WUS, and then starts to send a second WUS aiming at the target access object;

the target access object receives a second WUS (wireless local area network) aiming at the target access object, wherein the second WUS starts to be sent after the terminal receives X time slots/symbols/milliseconds after feedback aiming at the first WUS;

The target access object receives a second WUS (wireless access system) which is sent by the terminal and aims at the target access object after receiving Y time slots/symbols/milliseconds after the first SSB or the first SIB which are sent by the terminal after successfully triggering the target access object;

The target access object receives a second WUS which is sent by the terminal and aims at the target access object under the condition that the sending times of the first WUS reach the maximum value;

And the target access object receives a second WUS (wireless local area network) which is sent by the terminal and aims at the target access object after a first timer is overtime, wherein the first timer is started after the first WUS is sent.

The communication apparatus 1300 provided in this embodiment may trigger the second access object to send SSB or perform RACH listening as needed (on-demand), instead of continuously sending SSB or continuously performing RACH listening, or continuously not sending SSB or continuously not performing RACH listening, so that the capacity of the network side can be guaranteed as much as possible while saving energy for the network side device.

Optionally, the communication apparatus 1300 provided by the embodiment of the present application may further include a signal sending module, configured to send SSB/SIB by the target access object if the WUS is used to trigger the target access object to send SSB/SIB. So that the target access object sends SSB/SIB as required (on-demand) under the triggering of WUS, thereby being capable of preparing for the UE to access the target access object and increasing the capacity of the network side.

Optionally, the communication apparatus 1300 provided by the embodiment of the present application may further include an operation receiving module, configured to monitor a first operation initiated by the terminal and directed to the target access object.

Optionally, the communication apparatus 1300 provided in the embodiment of the present application may further include a second WUS receiving module, configured to receive a wake-up signal WUS for the target access object sent again by the terminal when the second condition is met, so as to improve a success rate of executing the first operation.

1) SSB detection fails;

2) The random access times reach the maximum value;

3) Feedback for the last WUS is not received;

5) Feedback for the last WUS is not received before the timer expires.

1) Increasing the signal power;

It should be noted that, the communication device in the embodiment of the present application may be an electronic device, for example, an electronic device with an operating system, or may be a component in an electronic device, for example, an integrated circuit or a chip. The electronic device may be a terminal, or may be other devices than a terminal. By way of example, the terminals may include, but are not limited to, the types of terminals 11 listed above, other devices may be servers, network attached storage (Network Attached Storage, NAS), etc., and embodiments of the present application are not limited in detail.

Optionally, as shown in fig. 14, the embodiment of the present application further provides a communication device 1400, including a processor 1401 and a memory 1402, where the memory 1402 stores a program or instructions that can be executed on the processor 1401, for example, when the communication device 1400 is a terminal, the program or instructions implement the steps of the random access method embodiment described above when executed by the processor 1401, and achieve the same technical effects. When the communication device 1400 is a network side device, the program or the instructions implement the steps of the above-mentioned communication method embodiment when executed by the processor 1401, and the same technical effects can be achieved, so that repetition is avoided, and further description is omitted here.

The embodiment of the application also provides a terminal, which comprises a processor and a communication interface, wherein the communication interface is used for receiving first information about a second access object group sent by network side equipment through a first access object, the second access object group comprises one or more second access objects different from the first access object, the processor is used for selecting a target access object for executing a first operation in the first access object and the second access object group according to the first information and a first rule, wherein the first operation comprises resident or random access, and the access object comprises one of a carrier wave, a cell and a bandwidth part BWP. The terminal embodiment corresponds to the terminal-side method embodiment, and each implementation process and implementation manner of the method embodiment can be applied to the terminal embodiment, and the same technical effects can be achieved. Specifically, fig. 15 is a schematic hardware structure of a terminal for implementing an embodiment of the present application.

The terminal 1500 includes, but is not limited to, at least some of the components of a radio frequency unit 1501, a network module 1502, an audio output unit 1503, an input unit 1504, a sensor 1505, a display unit 1506, a user input unit 1507, an interface unit 1508, a memory 1509, and a processor 1510, among others.

Those skilled in the art will appreciate that the terminal 1500 may further include a power source (e.g., a battery) for powering the various components, and the power source may be logically connected to the processor 1510 via a power management system so as to perform functions such as managing charging, discharging, and power consumption via the power management system. The terminal structure shown in fig. 15 does not constitute a limitation of the terminal, and the terminal may include more or less components than shown, or may combine some components, or may be arranged in different components, which will not be described in detail herein.

It should be appreciated that in embodiments of the present application, the input unit 1504 may include a graphics processing unit (Graphics Processing Unit, GPU) 15041 and a microphone 15042, with the graphics processor 15041 processing image data of still pictures or video obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing mode. The display unit 1506 may include a display panel 15061, and the display panel 15061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 1507 includes at least one of a touch panel 15071 and other input devices 15072. The touch panel 15071 is also referred to as a touch screen. The touch panel 15071 may include two parts, a touch detection device and a touch controller. Other input devices 15072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and so forth, which are not described in detail herein.

In the embodiment of the present application, after receiving the downlink data from the network side device, the radio frequency unit 1501 may transmit the downlink data to the processor 1510 for processing, and in addition, the radio frequency unit 1501 may send the uplink data to the network side device. Typically, the radio frequency unit 1501 includes, but is not limited to, antennas, amplifiers, transceivers, couplers, low noise amplifiers, diplexers, and the like.

The memory 1509 may be used to store software programs or instructions and various data. The memory 1509 may mainly include a first memory area storing programs or instructions and a second memory area storing data, wherein the first memory area may store an operating system, application programs or instructions (such as a sound playing function, an image playing function, etc.) required for at least one function, and the like. Further, the memory 1509 may include volatile memory or nonvolatile memory, or the memory 1509 may include both volatile and nonvolatile memory. The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable EPROM (EEPROM), or a flash Memory. The volatile memory may be random access memory (Random Access Memory, RAM), static random access memory (STATIC RAM, SRAM), dynamic random access memory (DYNAMIC RAM, DRAM), synchronous Dynamic Random Access Memory (SDRAM), double data rate Synchronous dynamic random access memory (Double DATA RATE SDRAM, DDRSDRAM), enhanced Synchronous dynamic random access memory (ENHANCED SDRAM, ESDRAM), synchronous link dynamic random access memory (SYNCH LINK DRAM, SLDRAM), and Direct random access memory (DRRAM). Memory 1509 in embodiments of the application include, but are not limited to, these and any other suitable types of memory.

The processor 1510 may include one or more processing units, and optionally, the processor 1510 integrates an application processor that primarily processes operations involving an operating system, user interfaces, application programs, and the like, and a modem processor that primarily processes wireless communication signals, such as a baseband processor. It will be appreciated that the modem processor described above may not be integrated into the processor 1510.

The radio frequency unit 1501 may be configured to receive first information about a second access object group sent by a network side device through a first access object, where the second access object group includes one or more second access objects different from the first access object.

Wherein the processor 1510 is configured to select a target access object for performing a first operation in the first access object and the second access object group according to the first information and the first rule, where the first operation includes camping or random access, and the access object includes one of a carrier, a cell, and a bandwidth part BWP.

In the embodiment of the present application, since the terminal 1500 may provide the first information and the first rule about the second access object group to the terminal through the first access object according to the network side device, and select the target access object to be subjected to residence or random access in the first access object and the second access object group, the second access object is not required to continuously send information such as SSB, SIB, etc., so that the capacity of the network side can be ensured as much as possible while the network side saves energy.

The embodiment of the application also provides network side equipment, which comprises a processor and a communication interface, wherein the communication interface is used for sending first information about a second access object group to a terminal through a first access object, the second access object group comprises one or more second access objects different from the first access object, the first information is used for the terminal to select a target access object for executing a first operation, the first operation comprises resident or random access, and the access object comprises one of a carrier wave, a cell and a bandwidth part BWP. The network side device embodiment corresponds to the network side device method embodiment, and each implementation process and implementation manner of the method embodiment can be applied to the network side device embodiment, and the same technical effects can be achieved.

Specifically, the embodiment of the application also provides network side equipment. As shown in fig. 16, the network-side device 1600 includes an antenna 1601, a radio frequency device 1602, a baseband device 1603, a processor 1604, and a memory 1605. The antenna 1601 is coupled to a radio frequency device 1602. In the uplink direction, the radio frequency device 1602 receives information via the antenna 1601, and transmits the received information to the baseband device 1603 for processing. In the downlink direction, the baseband device 1603 processes information to be transmitted and transmits the processed information to the radio frequency device 1602, and the radio frequency device 1602 processes the received information and transmits the processed information through the antenna 1601.

The method performed by the network-side device in the above embodiment may be implemented in the baseband apparatus 1603, and the baseband apparatus 1603 includes a baseband processor.

The baseband apparatus 1603 may, for example, comprise at least one baseband board on which a plurality of chips are disposed, as shown in fig. 16, where one chip, for example, a baseband processor, is connected to the memory 1605 through a bus interface to invoke a program in the memory 1605 to perform the network device operations shown in the above method embodiments.

The network-side device may also include a network interface 1606, such as a common public radio interface (common public radio interface, CPRI).

Specifically, the network side device 16000 of the embodiment of the present invention further includes instructions or programs stored in the memory 1605 and capable of running on the processor 1604, and the processor 1604 calls the instructions or programs in the memory 1605 to execute the method executed by each module shown in fig. 13, and achieves the same technical effects, so that repetition is avoided and therefore, the description is omitted.

The embodiment of the application also provides a readable storage medium, on which a program or an instruction is stored, which when executed by a processor, implements each process of the above random access method embodiment, and can achieve the same technical effects, and in order to avoid repetition, the description is omitted here.

Wherein the processor is a processor in the terminal described in the above embodiment. The readable storage medium includes computer readable storage medium such as computer readable memory ROM, random access memory RAM, magnetic or optical disk, etc.

The embodiment of the application further provides a chip, the chip comprises a processor and a communication interface, the communication interface is coupled with the processor, the processor is used for running a program or instructions, the random access method or each process of the communication method embodiment can be realized, the same technical effect can be achieved, and the repetition is avoided, and the description is omitted here.

It should be understood that the chips referred to in the embodiments of the present application may also be referred to as system-on-chip chips, or the like.

The embodiment of the present application further provides a computer program/program product, where the computer program/program product is stored in a nonvolatile storage medium, and the computer program/program product is executed by at least one processor to implement each process of the foregoing random access method or the foregoing communication method embodiment, and the same technical effects are achieved, so that repetition is avoided and redundant description is omitted herein.

The embodiment of the application also provides a communication system, which comprises a terminal and network side equipment, wherein the terminal can be used for executing the steps of the random access method shown in fig. 2, and the network side equipment can be used for executing the steps of the communication method shown in fig. 8.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. In light of such understanding, the technical solutions of the present application may be embodied essentially or in part in the form of a computer software product stored on a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) comprising instructions for causing a terminal (which may be a cell phone, computer, server, air conditioner, or network device, etc.) to perform the methods described in the various embodiments of the present application.

The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are to be protected by the present application.

Claims

1. A random access method, characterized in that the method comprises:

The terminal receives first information about a second access object group sent by a network side device through a first access object, wherein the second access object group includes one or more second access objects different from the first access object;

The terminal selects a target access object for performing a first operation from the first access object and the second access object group based on the first information and the first rule, wherein the first operation includes residence or random access, and the access object includes one of a carrier, a cell, and a bandwidth part BWP.

2. The method according to claim 1, wherein the first information corresponds to at least one second access object in the second access object group, and the first information includes at least one of the following:

WUS configuration information for triggering the at least one second access object to send a wake-up signal of an SSB, or WUS configuration information for triggering SSB adaptive adjustment of the at least one second access object, wherein the SSB includes at least one of a synchronization signal block and a physical broadcast channel block;

triggering the at least one second access object to send WUS configuration information of the SIB, or triggering the at least one second access object to adaptively adjust the SIB of the WUS configuration information;

WUS configuration information for triggering random access channel RACH monitoring of the at least one second access object, or WUS configuration information for triggering RACH monitoring adaptive adjustment of the at least one second access object;

Configuration information related to the SSB currently being sent by the at least one second access object;

Configuration information related to the SIB currently being sent by the at least one second access object;

Configuration information related to the RACH monitoring behavior currently in which the at least one second access object is located;

SSB configuration information sent after WUS triggers successfully;

SIB configuration information sent by WUS after successful triggering;

Configuration information related to RACH monitoring after successful triggering by WUS;

The characteristic information of the at least one second access object itself.

3. The method according to claim 1, wherein the first rule is related to at least one of the following:

One or more access objects that the terminal can randomly access, as indicated or configured by the network side device;

The access object that the terminal wants to randomly access is defaulted to be the first access object;

Bar status information of the second access object;

An index value of the second access object;

The center frequency of the second access object;

The subcarrier spacing SCS of the second access object;

an identifier of the second access object;

Whether the second access object performs normal RACH monitoring;

Whether the second access object sends SSB normally;

Whether the second access object sends the SIB normally;

Whether the second access object satisfies at least two of normal RACH monitoring, normal SSB transmission, and normal SIB transmission;

The number of times a WUS needs to be sent to the second access object;

The priority of the second access object;

A signal strength measurement value of a reference signal of the second access object, wherein the signal strength includes at least one of a reference signal received power RSRP and a signal to interference plus noise ratio SINR;

Randomly generated access object index;

a weight value of the second access object;

Randomly generated access object weight value;

whether the first access object is a suitable cell;

Whether the second access object is a suitable cell.

4. The method according to claim 1, wherein selecting a target access object for performing a first operation from the first access object and the second access object group according to the first information and the first rule comprises:

Determining whether the first access object is a suitable cell;

In a case where the first access object is a suitable cell, selecting the first access object as a target access object;

If the first access object is not a suitable cell, executing one of the first step, the second step and the third step;

Wherein, the first step comprises:

Determining whether the at least one second access object is a suitable cell according to a reference signal measurement result corresponding to at least one second access object in the second access object group and a system information SIB sent by the at least one second access object triggered by the WUS;

In a case where one or more second access objects among the at least one second access object are suitable cells, selecting a suitable cell from the at least one second access object as a target access object for performing the first operation according to a first rule;

Wherein, the second step comprises:

Determine, according to a reference signal measurement result corresponding to at least one second access object in the second access object group and a part of the SIB of the at least one second access object included in the first information, whether the at least one second access object is a suitable cell;

In a case where one or more second access objects among the at least one second access object are suitable cells, selecting a suitable cell from the at least one second access object according to the first rule, and in a case where the terminal fails to obtain the SIB of the suitable cell, sending a WUS that triggers SIB sending to the suitable cell, and taking the suitable cell as the target access object for performing the first operation after receiving the SIB;

Wherein, the third step comprises:

The second access object is ignored, and other suitable cells are searched as target access objects for performing operations.

5. The method according to claim 1, wherein selecting a target access object for performing a first operation from the first access object and the second access object group according to the first information and the first rule comprises:

Execute the fourth step or the fifth step;

Wherein, the fourth step comprises:

determining, according to a reference signal measurement result of the first access object and a system information SIB of the first access object, whether the first access object is a suitable cell;

Determine, according to a reference signal measurement result of at least one second access object in the second access object group and a part of the SIB of the at least one second access object included in the first information, whether the at least one second access object is a suitable cell;

In a case where the first access object is a suitable cell and one or more of the at least one second access object are suitable cells, selecting a suitable cell from the first access object and the at least one second access object according to a first rule;

If the suitable cell is the first access object, taking the suitable cell as the target access object for performing the first operation;

If the suitable cell is the second access object, sending a WUS that triggers the sending of the SIB to the suitable cell, and taking the suitable cell as the target access object for performing the first operation after receiving the SIB;

Wherein, the fifth step comprises:

determining, according to a reference signal measurement result of the first access object and a SIB of the first access object, whether the first access object is a suitable cell;

determining, according to a reference signal measurement result of at least one second access object in the second access object group and a SIB sent by the at least one second access object triggered by the WUS, whether the at least one second access object is a suitable cell;

When the first access object is a suitable cell and one or more of the at least one second access objects are suitable cells, a suitable cell is selected from the first access object and the at least one second access object according to a first rule as the target access object for performing the first operation.

6. The method according to claim 2, characterized in that the target access object belongs to the second access object group, the first information includes WUS configuration information that triggers the at least one second access object to send SSB/SIB, or triggers the WUS configuration information of SSB/SIB adaptive adjustment of the at least one second access object, and the first information includes WUS configuration information that triggers the random access channel RACH monitoring of the at least one second access object, or triggers the WUS configuration information of RACH monitoring adaptive adjustment of the at least one second access object, and the method further includes:

When the first condition is met, the terminal sends a WUS for the target access object, wherein the WUS is used to trigger the target access object to send at least one of an SSB, a SIB, and monitor a RACH;

Wherein, the first condition includes at least one of the following:

The first access object is not a suitable cell;

The target access object is a suitable cell;

Performing intra-frequency or inter-frequency measurement on the target access object;

The target access object is in a first energy-saving state, wherein the first energy-saving state includes at least one of not sending SSB, not sending SIB, not monitoring RACH, sending energy-saving SSB, sending energy-saving SIB, and energy-saving monitoring RACH, and the energy-saving SSB includes one of lightweight SSB, simplified SSB, sparse SSB, and long-period SSB;

The terminal is sensitive to access delay;

The terminal is in the process of recovering from a link failure.

7. The method according to claim 6, wherein the sending of the WUS for the target access object comprises:

Sending a first WUS for the target access object, where the first WUS is used to trigger the target access object to send an SSB and/or send an SIB;

A second WUS is sent to the target access object, wherein the second WUS is used to trigger the target access object to monitor the RACH.

8. The method according to claim 7, wherein the WUS is used to trigger the target access object to send SSB/SIB, and the method further comprises:

The terminal monitors and receives the SSB/SIB sent by the target access object.

9. The method according to claim 8, wherein the terminal monitors and receives the SSB/SIB sent by the target access object, comprising:

After sending the WUS, starting a third timer, after the third timer times out, the terminal starts to monitor and receive the SSB/SIB sent by the target access object;

After C time slots/symbols/milliseconds after sending the WUS, the terminal starts to monitor and receive the SSB/SIB sent by the target access object;

In the next time slot after sending the WUS, the terminal starts to monitor and receive the SSB/SIB sent by the target access object;

Within the SSB listening window configured in the first information, the terminal listens to the SSB sent by the target access object, and/or, within the SIB listening window configured in the first information, receives the SIB sent by the target access object.

10. The method according to claim 8, characterized in that the method further comprises:

Initiating, by the terminal, the first operation to the target access object;

The target access object is a second access object, and the initiating the first operation to the target access object includes one of the following:

After sending the WUS to the target access object, starting a second timer, after the second timer times out, the terminal initiating the first operation to the target access object;

A time slots/symbols/milliseconds after sending the WUS to the target access object, the terminal initiating the first operation to the target access object;

After receiving the feedback of the WUS for the target access object B time slots/symbols/milliseconds, the terminal initiates the first operation to the target access object.

11. A communication method, characterized in that the method comprises:

The network side device sends first information about a second access object group to the terminal through a first access object, wherein the second access object group includes one or more second access objects different from the first access object, and the first information is used by the terminal to select a target access object to perform a first operation, wherein the first operation includes residence or random access, and the access object includes one of a carrier, a cell, and a bandwidth part BWP.

12. The method according to claim 11, wherein the first information corresponds to at least one second access object in the second access object group, and the first information includes at least one of the following:

SSB configuration information sent after WUS triggers successfully;

SIB configuration information sent by WUS after successful triggering;

The characteristic information of the at least one second access object itself.

13. The method according to claim 12, characterized in that the target access object belongs to the second access object group, the first information includes WUS configuration information that triggers the at least one second access object to send SSB/SIB, or triggers the WUS configuration information of SSB/SIB adaptive adjustment of the at least one second access object, and the first information includes WUS configuration information that triggers the random access channel RACH monitoring of the at least one second access object, or triggers the WUS configuration information of RACH monitoring adaptive adjustment of the at least one second access object, and the method further includes:

The target access object receives a wake-up signal WUS, wherein the WUS is sent by the terminal when a first condition is met, and the WUS is used to trigger the target access object to send at least one of an SSB, a SIB, and monitor a RACH, wherein the first condition includes at least one of the following:

The first access object is not a suitable cell;

The target access object is a suitable cell;

The terminal is sensitive to access delay;

The terminal is in the process of recovering from a link failure.

14. The method according to claim 13, wherein the target access object receives a wake-up signal WUS, comprising:

The target access object has a first WUS, where the first WUS is used to trigger the target access object to send an SSB and/or send an SIB;

The target access object has a second WUS, wherein the second WUS is used to trigger the target access object to monitor RACH.

15. A random access device, characterized in that the device comprises:

An information receiving module, configured to receive first information about a second access object group sent by a network side device through a first access object, wherein the second access object group includes one or more second access objects different from the first access object;

An access object selection module is used to select a target access object for performing a first operation from the first access object and the second access object group according to the first information and the first rule, wherein the first operation includes residence or random access, and the access object includes one of a carrier, a cell, and a bandwidth part BWP.

16. The device according to claim 15, wherein the first information corresponds to at least one second access object in the second access object group, and the first information includes at least one of the following:

SSB configuration information sent after WUS triggers successfully;

SIB configuration information sent by WUS after successful triggering;

The characteristic information of the at least one second access object itself.

17. The apparatus according to claim 15, wherein the first rule is related to at least one of the following:

One or more access objects that the terminal can randomly access as indicated or configured by the network side device;

Bar status information of the second access object;

An index value of the second access object;

The center frequency of the second access object;

The subcarrier spacing SCS of the second access object;

an identifier of the second access object;

Whether the second access object performs normal RACH monitoring;

Whether the second access object sends SSB normally;

Whether the second access object sends the SIB normally;

The number of times a WUS needs to be sent to the second access object;

The priority of the second access object;

Randomly generated access object index;

a weight value of the second access object;

Randomly generated access object weight value;

whether the first access object is a suitable cell;

Whether the second access object is a suitable cell.

18. A communication device, characterized in that the device comprises:

An information sending module is used to send first information about a second access object group to a terminal through a first access object, wherein the second access object group includes one or more second access objects different from the first access object, and the first information is used by the terminal to select a target access object for performing a first operation, wherein the first operation includes residence or random access, and the access object includes one of a carrier, a cell, and a bandwidth part BWP.

19. The device according to claim 18, wherein the first information corresponds to at least one second access object in the second access object group, and the first information includes at least one of the following:

SSB configuration information sent after WUS triggers successfully;

SIB configuration information sent by WUS after successful triggering;

The characteristic information of the at least one second access object itself.

20. A terminal, characterized in that it comprises a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the random access method according to any one of claims 1 to 10 are implemented.

21. A network side device, characterized in that it comprises a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the communication method according to any one of claims 11 to 14 are implemented.

22. A readable storage medium, characterized in that a program or instruction is stored on the readable storage medium, and when the program or instruction is executed by a processor, the random access method according to any one of claims 1 to 10 is implemented, or the steps of the communication method according to any one of claims 11 to 14 are implemented.