CN115776738A

CN115776738A - Method for establishing Radio Resource Control (RRC) connection, terminal equipment and network equipment

Info

Publication number: CN115776738A
Application number: CN202211566215.0A
Authority: CN
Inventors: 张星逸
Original assignee: Zeku Technology Beijing Corp Ltd
Current assignee: Zeku Technology Beijing Corp Ltd
Priority date: 2022-12-07
Filing date: 2022-12-07
Publication date: 2023-03-10

Abstract

The application provides a method for establishing Radio Resource Control (RRC) connection, a terminal device and a network device, wherein the method comprises the following steps: the terminal device executes an RRC connection establishment procedure in the first cell according to a first parameter, wherein the first parameter is used for indicating the maximum number of allowed RRC connection establishment failures.

Description

Method for establishing Radio Resource Control (RRC) connection, terminal equipment and network equipment

Technical Field

The present invention relates to the field of communications, and in particular, to a method, a terminal device and a network device for establishing a radio resource control, RRC, connection.

Background

In some scenarios, in a Radio Resource Control (RRC) connection establishment process, a terminal device may receive an RRC connection setup (RRCConnectionSetup) message sent by a network device, and if the RRCConnectionSetup message fails to be checked (for example, a Signaling Radio Bearers (SRB) 1 related configuration is missing or wrong), the terminal device may determine that the RRC connection establishment procedure initiated this time fails, re-search for a network to reside in an original cell, and re-initiate a random access procedure.

Therefore, there is room for further optimization of the RRC connection establishment.

Disclosure of Invention

The application provides a method for establishing Radio Resource Control (RRC) connection, a terminal device and a network device.

In a first aspect, a method of wireless communication is provided, including: the terminal device executes an RRC connection establishment procedure in the first cell according to a first parameter, wherein the first parameter is used for indicating the maximum number of allowed RRC connection establishment failures.

In a second aspect, a method of wireless communication is provided, including: the network equipment configures a first parameter for the terminal equipment, wherein the first parameter is used for indicating the maximum number of times of the allowed RRC connection establishment failures.

In a third aspect, a terminal device is provided, configured to perform the method in the first aspect or each implementation manner thereof.

Specifically, the terminal device includes a functional module for executing the method in the first aspect or each implementation manner thereof.

In a fourth aspect, a network device is provided for performing the method of the second aspect or its implementation manners.

In particular, the network device comprises functional modules for performing the methods in the second aspect or its implementations described above.

In a fifth aspect, a terminal device is provided that includes a processor and a memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory, and executing the method in the first aspect or each implementation manner thereof.

In a sixth aspect, a network device is provided that includes a processor and a memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory, and executing the method of the second aspect or each implementation mode thereof.

In a seventh aspect, an apparatus is provided to implement the method in any one of the first to second aspects or implementations thereof.

Specifically, the apparatus includes: a processor configured to call and run the computer program from the memory, so that the apparatus on which the apparatus is installed performs the method according to any one of the first aspect to the second aspect or the implementation manner thereof.

In an eighth aspect, a computer-readable storage medium is provided for storing a computer program, the computer program causing a computer to perform the method of any one of the first to second aspects or implementations thereof.

In a ninth aspect, there is provided a computer program product comprising computer program instructions to cause a computer to perform the method of any one of the first to second aspects or implementations thereof.

A tenth aspect provides a computer program that, when run on a computer, causes the computer to perform the method of any one of the first to second aspects or implementations thereof.

Through the technical scheme, the terminal equipment can execute the RRC connection establishment process based on the first parameter, and the recovery of the normal service of the terminal equipment is ensured. For example, when the number of times of RRC connection establishment failure occurring on the first cell does not reach the maximum number of times, the connection establishment is immediately retried in the first cell, and the user service can be recovered in the shortest time. For another example, when the number of times of RRC connection establishment failures occurring in the first cell reaches the maximum number, instead of attempting to stop initiating the RRC connection establishment procedure again in the first cell, another new cell is attempted to be searched, so that a problem that the terminal device always attempts to initiate an RRC connection establishment procedure in a cell in question, which may cause a long-time abnormal service cannot be performed can be avoided.

Drawings

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

Fig. 2 is a schematic flow chart of an RRC connection setup procedure in the related art.

Fig. 3 is a schematic flow chart of another RRC connection establishment procedure in the related art.

Fig. 4 is a schematic flow chart of still another RRC connection setup procedure in the related art.

Fig. 5 is a schematic flow chart of a method of wireless communication provided in an embodiment of the present application.

Fig. 6 is a schematic flow chart diagram of a method of wireless communication according to an embodiment of the present application.

Fig. 7 is a schematic block diagram of a terminal device provided according to an embodiment of the present application.

Fig. 8 is a schematic block diagram of a network device provided according to an embodiment of the present application.

Fig. 9 is a schematic block diagram of a communication device provided according to an embodiment of the present application.

Fig. 10 is a schematic block diagram of a chip provided according to an embodiment of the present application.

Fig. 11 is a schematic block diagram of a communication system provided according to an embodiment of the present application.

Detailed Description

Technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art without making any creative effort with respect to the embodiments in the present application belong to the protection scope of the present application.

The embodiment of the application can be applied to various communication systems, such as: a Global System for Mobile communications (GSM) System, a Code Division Multiple Access (CDMA) System, a Wideband Code Division Multiple Access (WCDMA) System, a General Packet Radio Service (GPRS), a Long Term Evolution (Long Term Evolution, LTE) System, an Advanced Long Term Evolution (LTE-a) System, a New Radio (NR) System, an Evolution System of an NR System, an LTE (LTE-based Access to unlicensed spectrum, LTE-U) System on an unlicensed spectrum, an NR (NR-based Access to unlicensed spectrum, UMTS-based Mobile communication (GSM) System, a Wireless Local Area network (UMTS) System, a Wireless Local Area Network (WLAN) System, and other Wireless communication systems.

Generally, the conventional Communication system supports a limited number of connections and is easy to implement, however, with the development of Communication technology, the mobile Communication system will support not only conventional Communication but also, for example, device-to-Device (D2D) Communication, machine-to-Machine (M2M) Communication, machine Type Communication (MTC), and Vehicle-to-Vehicle (V2V) Communication, and the embodiments of the present application can also be applied to these Communication systems.

Optionally, the communication system in the embodiment of the present application may be applied to a Carrier Aggregation (CA) scenario, may also be applied to a Dual Connectivity (DC) scenario, and may also be applied to an independent (SA) networking scenario.

The application spectrum is not limited in the embodiments of the present application. For example, the embodiments of the present application may be applied to a licensed spectrum, and may also be applied to an unlicensed spectrum, or a shared spectrum.

Illustratively, a communication system 100 applied in the embodiment of the present application is shown in fig. 1. The communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a terminal device 120 (or referred to as a communication terminal, a terminal). Network device 110 may provide communication coverage for a particular geographic area and may communicate with terminal devices located within that coverage area.

Fig. 1 exemplarily shows one network device and two terminal devices, and optionally, the communication system 100 may include a plurality of network devices and may include other numbers of terminal devices within the coverage of each network device, which is not limited in this embodiment of the present application.

Optionally, the communication system 100 may further include other network entities such as a network controller, a mobility management entity, and the like, which is not limited in this embodiment.

It should be understood that, in the embodiments of the present application, a device having a communication function in a network/system may be referred to as a communication device. Taking the communication system 100 shown in fig. 1 as an example, the communication device may include a network device 110 and a terminal device 120 having a communication function, and the network device 110 and the terminal device 120 may be the specific devices described above and are not described herein again; the communication device may also include other devices in the communication system 100, such as other network entities, for example, a network controller, a mobility management entity, and the like, which is not limited in this embodiment.

It should be understood that the terms "system" and "network" are often used interchangeably herein. The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

It should be understood that "indication" mentioned in the embodiments of the present application may be a direct indication, may be an indirect indication, and may also indicate that there is an association relationship. For example, a indicates B, which may mean that a directly indicates B, e.g., B may be obtained by a; it may also mean that a indicates B indirectly, e.g. a indicates C, by which B may be obtained; it can also mean that there is an association between a and B.

In the description of the embodiments of the present application, the term "correspond" may indicate that there is a direct correspondence or an indirect correspondence between the two, may also indicate that there is an association between the two, and may also indicate and is indicated, configure and is configured, and the like.

Optionally, the configuration parameter, the configuration information, or the configuration signaling in the embodiment of the present application includes at least one of a Radio Resource Control (RRC) signaling and a Media Access Control Element (MAC CE).

The embodiments of the present application are described in conjunction with a terminal device and a network device, where: a terminal device may also be referred to as a User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a User terminal, a wireless communication device, a User agent, or a User Equipment, etc. The terminal device may be a STATION (ST) in a WLAN, and may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) STATION, a Personal Digital Assistant (PDA) device, a handheld device with Wireless communication function, a computing device or other processing device connected to a Wireless modem, a vehicle-mounted device, a wearable device, and a next generation communication system, for example, a terminal device in an NR Network or a terminal device in a future evolved Public Land Mobile Network (PLMN) Network, and the like.

By way of example and not limitation, in the embodiments of the present application, the terminal device may also be a wearable device. Wearable equipment can also be called wearable intelligent equipment, is the general term of applying wearable technique to carry out intelligent design, develop the equipment that can dress to daily wearing, like glasses, gloves, wrist-watch, dress and shoes etc.. A wearable device is a portable device that is worn directly on the body or integrated into the clothing or accessories of the user. The wearable device is not only a hardware device, but also realizes powerful functions through software support, data interaction and cloud interaction. The generalized wearable smart device includes full functionality, large size, and can implement full or partial functionality without relying on a smart phone, such as: smart watches or smart glasses and the like, and only focus on a certain type of application functions, and need to be used in cooperation with other devices such as smart phones, such as various smart bracelets for physical sign monitoring, smart jewelry and the like.

The network device may be a device for communicating with a mobile device, and the network device may be an Access Point (AP) in a WLAN, a Base Station (BTS) in GSM or CDMA, a Base Station (NodeB, NB) in WCDMA, an evolved Node B (eNB, eNodeB) in LTE, a relay Station or an Access Point, or a network device or a Base Station (gNB) in a vehicle-mounted device, a wearable device, and an NR network, or a network device in a PLMN network for future evolution.

In the embodiment of the present application, the network device may have a mobile characteristic, for example, the network device may be a mobile device. Alternatively, the network device may be a satellite, balloon station. For example, the satellite may be a Low Earth Orbit (LEO) satellite, a Medium Earth Orbit (MEO) satellite, a geosynchronous Orbit (GEO) satellite, a High Elliptic Orbit (HEO) satellite, and the like. Alternatively, the network device may be a base station installed on land, water, or the like.

In this embodiment of the present application, a network device provides a service for a cell, and a terminal device communicates with the network device through a transmission resource (for example, a frequency domain resource or a spectrum resource) used by the cell, where the cell may be a cell corresponding to the network device (for example, a base station), and the cell may belong to a macro base station or a base station corresponding to a Small cell (Small cell), where the Small cell may include: urban cells (Metro cells), micro cells (Micro cells), pico cells (Pico cells), femto cells (Femto cells), and the like, wherein the small cells have the characteristics of small coverage area and low transmission power, and are suitable for providing high-rate data transmission services.

In the LTE system, a Radio Resource Control (RRC) connection establishment procedure is required to be performed first for a terminal device to perform initial registration or initiate a service, where the RRC connection establishment procedure may include an establishment procedure of a Signaling Radio Bearer (SRB) (e.g., SRB 1).

Fig. 2 is a schematic interaction diagram of an RRC connection establishment procedure. As shown in fig. 2, may include the following steps:

s201, the terminal device sends a random access Preamble (Preamble, i.e. Msg 1) to the network device.

S202, the network device sends a Random Access Response (RAR, i.e. Msg 2) to the terminal device.

S203, the terminal equipment sends an RRC connection request (RRCConnectionrequest) message to the network equipment to request to establish RRC connection;

s204, the network equipment distributes and establishes SRB1 load for the terminal equipment, and sends RRC connection setup (RRCConnectionsetup) information to the UE;

s205, the terminal device sends an RRC connection setup complete (RRCConnectionSetupComplete) message to the network device, until the RRC connection is successfully established.

In some cases, if an Information Element (IE) necessary for SRB1 establishment, such as a newly added SRB modification list (SRB-ToAddModList), a MAC master configuration (macmacmainconfig), a physical layer dedicated configuration (physical config specified), and the like in an RRCConnectionSetup message sent by a network device does not exist or has a content error, a terminal device cannot successfully establish an SRB1, which results in a failure in the RRC connection establishment, and there are two solutions for exception handling in this case, namely, solution a and solution B:

scheme a: as shown in fig. 3, in the RRC connection establishment process, the UE receives the RRCConnectionSetup message, and if the SRB1 related configuration check fails (for example, the SRB1 related configuration check lacks SRB-ToAddModList IE), the UE determines that the RRC connection establishment procedure initiated this time fails, searches for the network again to camp on the original cell, and initiates the random access procedure again.

Scheme B: as shown in fig. 4, taking UE initiating initial registration, i.e. Attach (Attach) procedure as an example, when the UE receives an RRCConnectionSetup message in the RRC connection establishment procedure, if SRB1 related configuration check fails (for example, SRB-ToAddModList IE is absent), the UE may determine that the current initiated RRC connection establishment procedure fails, but does not immediately retry RRC establishment, the UE side RRC component may notify a Non-Access Stratum (NAS) component that the current RRC establishment procedure fails, the UE side NAS component may determine whether the current number of times Count of initiating Attach is equal to 5, when Count is less than 5, the UE may start a T3411 timer (duration 10 s), when T3411 times out, try again the RRC connection establishment procedure, when Count is equal to 5, the UE may add Tracking Area (TA) of the current cell into the forbidden Area list, and when the UE does not camp on the forbidden TA within 12 minutes, the UE may attempt RRC establishment of the forbidden Area, and attempt other RRC establishment procedures.

For the scheme a, if the RRCConnectionSetup message check fails, although the UE can immediately restart the RRC connection establishment procedure on the current cell, if the current cell is a problem cell, and the RRCConnectionSetup message configuration check fails each time, the UE adopting the scheme a will always try to reestablish the RRC connection establishment procedure on the current problem cell, which may cause the UE to fail to enter a connected state for a long time and to try to search for other new cells in time, resulting in the UE failing to normally perform a service for a long time.

For solution B, the following drawbacks exist:

defect 1: after one RRC connection establishment failure, the T3411 timer needs to be started, which results in that it is not possible to retry initiating RRC connection establishment during the T3411 operation, which results in a long time for the user to resume normal service.

Defect 2: if the current cell is a problem cell, and the UE attempts 5 times of RRC connection establishment procedures all fail due to the RRCConnectionSetup message configuration problem, the UE starts a T3402 timer, the UE cannot attempt registration on the same TA cell within 12 minutes, because the TA range is larger than the cell range, and the SRB1 configuration failure is only related to the current cell configuration, and the prohibition of the TA by using the scheme B will cause the UE to fail to camp on other normal cells in the TA, and the range of the forbidden cell is expanded.

Therefore, there is a need for further improvement of the RRC connection establishment procedure.

In order to facilitate understanding of the technical solutions of the embodiments of the present application, the technical solutions of the present application are described in detail below with specific embodiments. The above related art can be arbitrarily combined with the technical solutions of the embodiments of the present application as alternatives, which all belong to the scope of protection of the embodiments of the present application. The embodiment of the present application includes at least part of the following contents.

Fig. 5 is a schematic flow chart of a method 500 of wireless communication according to an embodiment of the present application, as shown in fig. 5, the method 500 including the following:

and S510, the terminal equipment executes an RRC connection establishment process in the first cell according to the first parameter.

The first parameter is used to indicate a maximum number of allowed RRC connection establishment failures, or a maximum number of retries of the first cell, which is denoted as N.

It should be understood that the reason why the terminal device initiates the RRC connection establishment procedure on the first cell may be, for example, initial registration, location update, service initiation, and the like, which is not limited in this application.

In some embodiments, the first parameter is for all cells. That is, the terminal device uses the same first parameter when performing RRC connection setup on all cells.

In other embodiments, the first parameters are of cell granularity, that is, each cell corresponds to a corresponding first parameter, and then the terminal device uses the corresponding first parameter when performing the RRC connection establishment procedure on each cell.

In some embodiments, the first parameter is predefined (e.g., agreed upon by a protocol), determined by the terminal device, or configured by the network device. For example, the method 500 further includes:

s501, the network equipment sends the first parameter to the terminal equipment.

Illustratively, the first parameter may be configured by the network device through signaling such as system message or RRC signaling.

In some embodiments, the first parameter may be determined from a signal quality of the cell.

In some embodiments, the failure of the terminal device to perform RRC connection setup on the first cell includes, but is not limited to: the RRC connection establishment message received by the terminal device does not include SRB related configuration, or RRC connection establishment failure caused by SRB related configuration error or the like.

In some embodiments, the SRB related configuration includes, but is not limited to, a radio bearer configuration (radioBearerConfig) and/or a master cell group configuration (masterCellGroup).

In some embodiments, the terminal device performs an RRC connection establishment procedure in the first cell according to the first parameter, including:

if the number of times that the terminal equipment fails to execute the RRC connection establishment in the first cell is less than the maximum number of times indicated by the first parameter, the terminal equipment continues to try to execute the RRC connection establishment process in the first cell.

For example, if the number of times that the terminal device fails to perform RRC connection establishment in the first cell is less than the maximum number of times indicated by the first parameter, the terminal device immediately reattempts to perform an RRC connection establishment procedure in the first cell.

Specifically, if the RRC connection establishment fails due to the SRB related configuration loss, the SRB related configuration mainly relates to the configuration between the terminal device and the network device, and does not relate to the NAS layer, so the terminal device does not need to wait for the NAS layer timer T3411 to time out and then attempt to initiate the RRC connection establishment procedure, but may immediately reattempt to establish the connection when the number of times of the RRC connection establishment failure does not reach the maximum number of times.

In some embodiments, before the terminal device continues to attempt to perform the RRC connection establishment procedure in the first cell, the method 500 further includes:

and the terminal equipment releases the RRC connection which is failed to establish, and searches for the network again to reside in the first cell.

In a specific embodiment, in a case that the number of times that the first cell fails to perform RRC connection establishment is less than the maximum number N, the terminal device may release the RRC connection that fails to be established, reselect to camp on the first cell, and continue to attempt to perform an RRC connection establishment procedure in the first cell.

and if the times of the RRC connection establishment failure of the terminal equipment in the first cell reach the maximum times indicated by the first parameter, the terminal equipment does not try to execute an RRC connection establishment process in the first cell.

In some embodiments, the number of times that the terminal device performs the RRC connection setup failure on the first cell reaches the maximum number indicated by the first parameter, the first cell may be considered as a problem cell, or a faulty cell, in this case, the terminal device does not attempt to perform the RRC connection setup procedure on the first cell, and it can be effectively ensured that the terminal device searches for other available cell residences as early as possible to recover the service, instead of continuously attempting on the problem cell.

In some embodiments, the terminal device may count the number of times the RRC connection establishment performed in the first cell fails based on the first counter.

For example, the initial value of the first counter is zero, the first counter is incremented by one when the terminal device fails to perform RRC connection establishment in the first cell, and the count value of the first counter is cleared when the count value of the first counter reaches the maximum number of times indicated by the first parameter.

For another example, the initial value of the first counter is the maximum number of times indicated by the first parameter, the first counter is decremented by one when the terminal device fails to perform RRC connection establishment in the first cell, and the count value of the first counter is reset to the maximum number of times indicated by the first parameter when the count value of the first counter is zero.

the terminal device executes an RRC connection establishment procedure in the first cell according to the first parameter and a second parameter, where the second parameter is used to indicate a forbidden duration (or a forbidden duration) of the first cell.

More specifically, the second parameter is used to indicate the prohibition duration of the first cell when the number of times of performing RRC connection setup failure in the first cell reaches the maximum number of times indicated by the first parameter.

Therefore, in this embodiment of the present application, when the number of times that the terminal device performs RRC connection establishment failure on the first cell reaches the maximum number of times, the first cell is prohibited instead of the TA to which the first cell belongs, so that the terminal device may also search for and reside in other cells in the TA to which the first cell belongs, thereby ensuring fast recovery of the normal service of the terminal device.

In some embodiments, the second parameter is predefined (e.g., agreed upon by a protocol), determined by the terminal device, or configured by the network device.

Alternatively, the second parameter may be configured by the network device through signaling such as system message or RRC signaling.

In some embodiments, the second parameter is for all cells. That is, the barring duration is the same for all cells.

In other embodiments, the second parameter is cell granular. That is, each cell corresponds to a corresponding second parameter, the terminal device uses the corresponding second parameter when performing the RRC connection establishment procedure on each cell.

Optionally, the second parameter is determined according to a signal quality of the cell.

In some embodiments, the terminal device performs an RRC connection establishment procedure in the first cell according to the first parameter and the second parameter, including:

if the number of times that the terminal equipment fails to execute RRC connection establishment in the first cell reaches the maximum number of times indicated by the first parameter, the terminal equipment adds the first cell to a forbidden list;

and within the prohibition duration indicated by the second parameter, the terminal equipment does not attempt to camp on the first cell any more.

Further, in some embodiments, the method 500 further comprises:

and within the forbidden time duration indicated by the second parameter, the terminal equipment starts to search other cells except the first cell and tries to camp on other cells.

In some embodiments, the first cell is deleted from the forbidden list when the forbidden duration of the first cell reaches the forbidden duration indicated by the second parameter.

In some embodiments, adding the first cell to a forbidden list may comprise:

adding one or more of Frequency band information of the first Cell, physical Cell Identity (PCI), and Absolute Radio Frequency Channel Number (ARFCN) to the forbidden list.

In a specific embodiment, when the number of times that the terminal device fails to perform RRC connection establishment on the first cell reaches the maximum number, the terminal device starts a first timer, and adds the first cell to a forbidden list, where a duration of the first timer is set as a forbidden duration of the first cell, and during a running period of the first timer, the terminal device does not try to perform an RRC connection establishment procedure in the first cell. Further, the first cell is deleted from the forbidden list after the first timer times out. Optionally, during the operation of the first timer, the terminal device starts to search for other cells except the first cell and tries to camp on other cells.

Hereinafter, an RRC connection establishment procedure according to an embodiment of the present application will be described with reference to fig. 6. As shown in fig. 6, the following steps may be included:

s511, after the UE successfully resides in the first cell, if it needs to initiate initial registration, location update or service initiation, the UE initiates a random access procedure.

S512, the UE sends an RRC connection request message to the network equipment.

S513, the UE receives an RRC connection setup message sent by the network device.

S514, perform SRB related configuration detection on the RRC connection setup message.

In case the SRB related configuration detection is successful, S515 is performed, otherwise S516 is performed.

S515, the UE replies an RRC connection setup complete message to the network device until the RRC connection setup is successful.

S516, the UE determines that the RRC connection establishment fails, and adds one to the number Count of the RRC connection establishment failures.

S517, the UE determines whether the number of times of the RRC connection establishment failure reaches the maximum number N.

If so, S518 is performed, otherwise, S519 is performed.

S518, clearing the times of the RRC connection establishment failure, adding the first cell into a forbidden list, no longer trying to reside in the first cell within a forbidden time length, and starting to search other cells and reside.

S519, the UE locally releases the RRC connection which is failed to establish, searches for the network again to reside in the first cell, and continuously tries to initiate a random access process on the first cell.

In summary, in the embodiment of the application, the terminal device may execute the RRC connection establishment procedure based on the first parameter, which is beneficial to ensuring the recovery of the normal service of the terminal device. For example, when the number of times of the RRC connection establishment failure occurring in the first cell does not reach the maximum number of times, the connection establishment is immediately retried in the first cell, which ensures that the user service can be recovered in the shortest time. For another example, when the number of times of RRC connection establishment failures occurring in the first cell reaches the maximum number, instead of attempting to stop initiating the RRC connection establishment procedure again in the first cell, another new cell is attempted to be searched, so that a problem that the terminal device always attempts to initiate an RRC connection establishment procedure in a cell in question, which may cause a long-time abnormal service cannot be performed can be avoided.

Further, in a case that the number of times of performing the RRC connection establishment failure reaches the maximum number of times indicated by the first parameter, the terminal device may add the first cell to the forbidden list, and within the forbidden duration indicated by the second parameter, no longer initiate the RRC connection establishment procedure to the first cell. That is to say, the embodiment of the present application prohibits the first cell, rather than the TA to which the first cell belongs, so that the terminal device may also search for and reside in other cells in the TA to which the first cell belongs, which is beneficial to ensuring fast recovery of the normal service of the terminal device.

While method embodiments of the present application are described in detail above with reference to fig. 5-6, apparatus embodiments of the present application are described in detail below with reference to fig. 7-11, it being understood that apparatus embodiments correspond to method embodiments and that similar descriptions may be had with reference to method embodiments.

Fig. 7 shows a schematic block diagram of a terminal device 700 according to an embodiment of the application. As shown in fig. 7, the terminal device 700 includes:

a processing unit 710, configured to perform an RRC connection establishment procedure in a first cell according to a first parameter, where the first parameter is used to indicate a maximum number of allowed RRC connection establishment failures.

In some embodiments, the processing unit 710 is further configured to:

and if the times of the RRC connection establishment failure of the terminal equipment in the first cell are less than the maximum times indicated by the first parameter, continuing to try to execute an RRC connection establishment process in the first cell.

In some embodiments, the processing unit 710 is further configured to:

and before continuing to attempt to execute the RRC connection establishment process in the first cell, releasing the RRC connection with failed establishment, and searching for the network again to reside in the first cell.

In some embodiments, the processing unit 710 is further configured to:

and if the times of the RRC connection establishment failure executed by the terminal equipment in the first cell reach the maximum times indicated by the first parameter, no RRC connection establishment process is executed in the first cell.

In some embodiments, the processing unit 710 is further configured to:

and executing an RRC connection establishment procedure in the first cell according to the first parameter and a second parameter, wherein the second parameter is used for indicating the forbidden duration of the first cell.

In some embodiments, the processing unit 710 is further configured to:

if the number of times of the RRC connection establishment failure of the terminal equipment in the first cell reaches the maximum number of times indicated by the first parameter, adding the first cell to a forbidden list;

no more attempts are made to camp on the first cell for a barring duration indicated by the second parameter.

In some embodiments, the processing unit 710 is further configured to:

and starting to search other cells except the first cell within the forbidden time duration indicated by the second parameter, and attempting to camp on other cells.

In some embodiments, the processing unit 710 is further configured to:

the number of times of performing an RRC connection setup failure in the first cell is counted based on the first counter.

In some embodiments, the initial value of the first counter is zero, the first counter is incremented when the terminal device fails to perform RRC connection establishment in the first cell, and the count value of the first counter is cleared when the count value of the first counter reaches the maximum number of times indicated by the first parameter.

In some embodiments, the initial value of the first counter is the maximum number of times indicated by the first parameter, the first counter is decremented by one when the terminal device fails to perform RRC connection establishment in the first cell, and the count value of the first counter is reset to the maximum number of times indicated by the first parameter when the count value of the first counter is zero.

In some embodiments, the terminal device performing an RRC connection setup failure on the first cell comprises:

the RRC connection establishment message received by the terminal equipment does not include Signaling Radio Bearer (SRB) related configuration or SRB related configuration errors.

In some embodiments, the SRB related configuration comprises a radio bearer configuration and/or a master cell group configuration.

In some embodiments, the first parameter is predefined, determined by the terminal device, or configured by the network device.

In some embodiments, the second parameter is predefined, determined by the terminal device, or configured by the network device.

In some embodiments, the first parameter is for all cells or the first parameter is cell-granular.

In some embodiments, the second parameter is for all cells or the first parameter is cell-granular. Optionally, in some embodiments, the communication unit may be a communication interface or a transceiver, or an input/output interface of a communication chip or a system on a chip. The processing unit may be one or more processors.

It should be understood that the terminal device 700 according to the embodiment of the present application may correspond to a terminal device in the embodiment of the method of the present application, and the above and other operations and/or functions of each unit in the terminal device 700 are respectively for implementing corresponding flows of the terminal device in the method 500 shown in fig. 5 to fig. 6, and are not described herein again for brevity.

Fig. 8 is a schematic block diagram of a network device according to an embodiment of the present application. The network device 800 of fig. 8 includes:

a communication unit 810, configured to configure a first parameter for a terminal device, where the first parameter is used to indicate a maximum number of allowed RRC connection establishment failures.

In some embodiments, the communication unit 810 is further configured to:

and configuring a second parameter for the terminal equipment, wherein the second parameter is used for indicating the forbidden time length of the cell.

In some embodiments, the second parameter is for all cells or the first parameter is cell-granular.

Optionally, in some embodiments, the communication unit may be a communication interface or a transceiver, or an input/output interface of a communication chip or a system on a chip. The processing unit may be one or more processors.

It should be understood that the network device 800 according to the embodiment of the present application may correspond to a network device in the embodiment of the method of the present application, and the above and other operations and/or functions of each unit in the network device 800 are respectively for implementing corresponding flows of the network device in the method 500 shown in fig. 5 to 6, and are not described herein again for brevity.

Fig. 9 is a schematic structural diagram of a communication device 900 according to an embodiment of the present application. The communication device 900 shown in fig. 9 includes a processor 910, and the processor 910 can call and run a computer program from a memory to implement the method in the embodiment of the present application.

Optionally, as shown in fig. 9, the communication device 900 may also include a memory 920. From the memory 920, the processor 910 can call and run a computer program to implement the method in the embodiment of the present application.

The memory 920 may be a separate device from the processor 910, or may be integrated in the processor 910.

Optionally, as shown in fig. 9, the communication device 900 may further include a transceiver 930, and the processor 910 may control the transceiver 930 to communicate with other devices, and specifically, may transmit information or data to the other devices or receive information or data transmitted by the other devices.

The transceiver 930 may include a transmitter and a receiver, among others. The transceiver 930 may further include one or more antennas.

Optionally, the communication device 900 may specifically be a network device in this embodiment, and the communication device 900 may implement a corresponding process implemented by the network device in each method in this embodiment, which is not described herein again for brevity.

Optionally, the communication device 900 may specifically be a mobile terminal/terminal device according to this embodiment, and the communication device 900 may implement a corresponding process implemented by the mobile terminal/terminal device in each method according to this embodiment, which is not described herein again for brevity.

Fig. 10 is a schematic structural diagram of a chip of the embodiment of the present application. The chip 1000 shown in fig. 10 includes a processor 1010, and the processor 1010 may call and run a computer program from a memory to implement the method in the embodiment of the present application.

Optionally, as shown in fig. 10, the chip 1000 may further include a memory 1020. From the memory 1020, the processor 1010 may call and execute a computer program to implement the method in the embodiment of the present application.

The memory 1020 may be a separate device from the processor 1010 or may be integrated into the processor 1010.

Optionally, the chip 1000 may further include an input interface 1030. The processor 1010 may control the input interface 1030 to communicate with other devices or chips, and specifically may obtain information or data transmitted by the other devices or chips.

Optionally, the chip 1000 may further include an output interface 1040. The processor 1010 may control the output interface 1040 to communicate with other devices or chips, and may particularly output information or data to the other devices or chips.

Optionally, the chip may be applied to the network device in the embodiment of the present application, and the chip may implement the corresponding process implemented by the network device in each method in the embodiment of the present application, and for brevity, details are not described here again.

Optionally, the chip may be applied to the mobile terminal/terminal device in the embodiment of the present application, and the chip may implement the corresponding process implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, and for brevity, no further description is given here.

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

Fig. 11 is a schematic block diagram of a communication system 1100 provided in an embodiment of the present application. As shown in fig. 11, the communication system 1100 includes a terminal device 1110 and a network device 1120.

The terminal device 1110 may be configured to implement the corresponding function implemented by the terminal device in the foregoing method, and the network device 1120 may be configured to implement the corresponding function implemented by the network device in the foregoing method, which is not described herein again for brevity.

It should be understood that the processor of the embodiments of the present application may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method embodiments may be performed by integrated logic circuits of hardware in a processor or instructions in the form of software. The Processor may be a general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off the shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components. The various methods, steps, and logic blocks disclosed in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in a memory, and a processor reads information in the memory and completes the steps of the method in combination with hardware of the processor.

It will be appreciated that the memory in the embodiments of the subject application can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of example, and not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), dynamic Random Access Memory (DRAM), synchronous Dynamic Random Access Memory (SDRAM), double Data Rate Synchronous Dynamic random access memory (DDR SDRAM), enhanced Synchronous SDRAM (ESDRAM), synchronous Link DRAM (SLDRAM), and Direct Rambus RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

It should be understood that the above memories are exemplary but not limiting illustrations, for example, the memories in the embodiments of the present application may also be Static Random Access Memory (SRAM), dynamic random access memory (dynamic RAM, DRAM), synchronous Dynamic Random Access Memory (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (enhanced SDRAM, ESDRAM), synchronous Link DRAM (SLDRAM), direct Rambus RAM (DR RAM), and the like. That is, the memory in the embodiments of the present application is intended to comprise, without being limited to, these and any other suitable types of memory.

The embodiment of the application also provides a computer readable storage medium for storing the computer program.

Optionally, the computer-readable storage medium may be applied to the network device in the embodiment of the present application, and the computer program enables the computer to execute the corresponding process implemented by the network device in each method in the embodiment of the present application, which is not described herein again for brevity.

Optionally, the computer-readable storage medium may be applied to the mobile terminal/terminal device in the embodiment of the present application, and the computer program enables the computer to execute the corresponding process implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, which is not described herein again for brevity.

Embodiments of the present application also provide a computer program product comprising computer program instructions.

Optionally, the computer program product may be applied to the network device in the embodiment of the present application, and the computer program instruction enables the computer to execute a corresponding process implemented by the network device in each method in the embodiment of the present application, which is not described herein again for brevity.

Optionally, the computer program product may be applied to the mobile terminal/terminal device in the embodiment of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the mobile terminal/terminal device in the methods in the embodiment of the present application, which are not described herein again for brevity.

The embodiment of the application also provides a computer program.

Optionally, the computer program may be applied to the network device in the embodiment of the present application, and when the computer program runs on a computer, the computer is enabled to execute the corresponding process implemented by the network device in each method in the embodiment of the present application, and for brevity, details are not described here again.

Optionally, the computer program may be applied to the mobile terminal/terminal device in the embodiment of the present application, and when the computer program runs on a computer, the computer is enabled to execute the corresponding process implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, which is not described herein again for brevity.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the technical solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A method for establishing a radio resource control, RRC, connection, comprising:

the terminal device executes an RRC connection establishment procedure in the first cell according to a first parameter, wherein the first parameter is used for indicating the maximum number of allowed RRC connection establishment failures.

2. The method of claim 1, wherein the terminal device performs the RRC connection establishment procedure in the first cell according to the first parameter, and wherein the RRC connection establishment procedure comprises:

and if the times of the RRC connection establishment failure of the terminal equipment in the first cell are less than the maximum times indicated by the first parameter, the terminal equipment continuously tries to execute an RRC connection establishment process in the first cell.

3. The method of claim 2, wherein before the terminal device continues to attempt to perform the RRC connection establishment procedure in the first cell, the method further comprises:

and the terminal equipment releases the RRC connection which fails to be established, and searches for the network again to reside in the first cell.

4. The method according to any of claims 1-3, wherein the terminal device performs the RRC connection setup procedure in the first cell according to the first parameter, comprising:

5. The method according to any of claims 1-4, wherein the terminal device performs the RRC connection setup procedure in the first cell according to the first parameter, comprising:

and the terminal equipment executes an RRC connection establishment process in the first cell according to the first parameter and a second parameter, wherein the second parameter is used for indicating the forbidden duration of the first cell.

6. The method according to claim 5, wherein the terminal device performs an RRC connection establishment procedure in the first cell according to the first parameter and the second parameter, and the procedure comprises:

7. The method of claim 6, further comprising:

8. The method according to any one of claims 1-7, further comprising:

the number of times an RRC connection establishment failure is performed in the first cell is counted based on the first counter.

9. The method according to claim 8, wherein an initial value of the first counter is zero, the first counter is incremented by one when the terminal device fails to perform RRC connection establishment in the first cell, and the count value of the first counter is cleared when the count value of the first counter reaches the maximum number of times indicated by the first parameter.

10. The method according to claim 8, wherein an initial value of the first counter is a maximum number of times indicated by the first parameter, the first counter is decremented by one when the terminal device fails to perform RRC connection establishment in the first cell, and the count value of the first counter is reset to the maximum number of times indicated by the first parameter when the count value of the first counter is zero.

11. The method according to any of claims 1-10, wherein the terminal device performing the RRC connection setup failure on the first cell comprises:

12. The method according to claim 11, wherein the SRB related configuration comprises a radio bearer configuration and/or a master cell group configuration.

13. The method according to any of claims 1-12, wherein the first parameter is predefined, determined by the terminal device, or configured by a network device.

14. The method according to any of claims 5-7, wherein the second parameter is predefined, determined by the terminal device, or configured by a network device.

15. The method according to any of claims 1-14, wherein the first parameter is for all cells or wherein the first parameter is cell-granular.

16. The method according to any of claims 5-7, wherein the second parameter is for all cells or wherein the first parameter is cell-granular.

17. A method for establishing a radio resource control, RRC, connection, comprising:

the network equipment configures a first parameter for the terminal equipment, wherein the first parameter is used for indicating the maximum number of allowed RRC connection establishment failures.

18. The method of claim 17, wherein the first parameter is for all cells or wherein the first parameter is cell-granular.

19. The method according to claim 17 or 18, further comprising:

and the network equipment configures a second parameter for the terminal equipment, wherein the second parameter is used for indicating the forbidden duration of the cell.

20. The method of claim 19, wherein the second parameter is for all cells or wherein the first parameter is cell-granular.

21. A terminal device, comprising:

a processing unit, configured to execute an RRC connection establishment procedure in a first cell according to a first parameter, where the first parameter is used to indicate a maximum number of allowed RRC connection establishment failures.

22. A network device, comprising:

a communication unit, configured to configure a first parameter for a terminal device, where the first parameter is used to indicate a maximum number of allowed RRC connection establishment failures.

23. A terminal device, comprising: a processor and a memory for storing a computer program, the processor being configured to invoke and execute the computer program stored in the memory to perform the method of any of claims 1 to 16.

24. A network device, comprising: a processor and a memory for storing a computer program, the processor being adapted to invoke and execute the computer program stored in the memory to perform the method of any of claims 17 to 20.

25. A chip, comprising: a processor for calling and running a computer program from memory to cause a device on which the chip is installed to perform the method of any of claims 1 to 16, or the method of any of claims 17 to 20.

26. A computer-readable storage medium for storing a computer program which causes a computer to perform the method of any one of claims 1 to 16, or the method of any one of claims 17 to 20.