CN103096281B - Method, equipment and system for signaling transmission under composite business - Google Patents

Abstract

The invention discloses a method, device and system for signaling transmission under combined services. The method includes: the network side device divides the control signaling into N levels, and establishes a link between the N levels and M SRBs. In the corresponding relationship, 2≤M≤N≤32; in the corresponding relationship, each level corresponds to one SRB, and each SRB corresponds to at least one level; when the network side device determines to transmit control signaling to the UE, according to the The level of the control signaling, and the SRB corresponding to the level is used to transmit the control signaling. The embodiments of the present invention can reduce the possibility of non-recoverable errors occurring in SRB2, and improve the timeliness and effectiveness of service transmission.

Description

Method, device and system for signaling transmission under combined service

technical field

The present invention relates to the field of communications, in particular to a method, device and system for signaling transmission under combined services.

Background technique

There are two interfaces in UMTS (Universal Mobile Telecommunications System, Universal Mobile Communications System), which are the Uu interface between UE (User Equipment, user equipment) and UTRAN (Universal Terrestrial Radio Access Network, global terrestrial radio access network), The Iu interface between CN (Core Network, core network) and UTRAN. Among them, there are also two interfaces inside the UTRAN, namely the Iub interface between the NodeB (base station) and the RNC (Radio Network Controller, radio network controller), and the Iur interface between the RNC and the RNC. Protocols on different interfaces are divided into User-Plane (user plane) protocol and Control-Plane (control plane) protocol, where the user plane protocol management is used for the formatting of transmission information, while the control plane protocol management is used for transmission control Signal and maintain the connection between UE and CN.

In the UMTS system, the network side and the UE complete the interaction of user plane data and control plane signaling through RB (Radio Bearer, radio bearer). Among them, the network side and UE perform RRC (Radio Resource Control, radio resource control) signaling interaction through SRB (SignallingRadio Bearer, wireless signaling bearer), and the network side and UE complete user plane data interaction through RB. Currently, the SRBs defined in the protocol include SRB0, SRB1, SRB2, SRB3, and SRB4.

The services established by UE can be divided into CS (Circuit Stream, circuit switched stream) service and PS (Packet Stream, packet switched stream) service according to the core network level. The QoS (Quality of Service, service level) of the two types of services have different requirements. It is generally believed that CS services include voice services, streaming services, etc. These services have a low rate, but are more real-time and sensitive to delay; PS services include download services, background services, and interactive services. The rate is high, and the requirement for delay is relatively low. Wherein, when initiating the CS service, the UE must be configured in the CELL_DCH state, and initiating the PS service, the UE can be configured in the CELL_DCH state or the CELL_FACH state.

Once the UE in the idle state has CS service and/or PS service demand, it first needs to initiate the RRC connection process. After the RRC connection is established, the SRB and the corresponding service RB between the UE and the network side can be established for use Transport different services. On the premise that the UE has established an RRC connection and initiated CS and/or PS services, SBR2 generally needs to bear the following control signaling: control signaling used in the signaling interaction process of RB reconfiguration, such as RB establishment signaling, reconfiguration Configuration signaling and release signaling, etc.; control signaling used in the mobility measurement process, such as measurement control signaling, measurement reporting signaling, etc.; control signaling used in the active set update process, such as active set update signaling wait.

The inventor found that when the UE initiates CS service and PS service at the same time, it is easy to trigger SRB2 non-recoverable error. At this time, it is necessary to transfer the UE from the CELL_DCH state to the CELL_FACH state, release all dedicated link resources, and pass the common channel Initiate the cell update process to complete the dedicated link re-establishment and try to restore the service between the UE and the network side. This process generally takes a few seconds, which causes a delay in the transmission of the CS service and the PS service or even an interruption of the CS service and the PS service, affecting the timeliness and effectiveness of service data, especially the transmission of the CS service.

Contents of the invention

In view of this, the technical problem to be solved by the present invention is to provide a method, device and system for signaling transmission under combined services, which can reduce the possibility of non-recoverable errors in SRB2 and improve the timeliness and effectiveness of service transmission. sex.

For this reason, the embodiment of the present invention adopts following technical scheme:

An embodiment of the present invention provides a method for signaling transmission under a combined service, including:

The network-side device divides the control signaling into N levels, and establishes a correspondence between the N levels and M wireless signaling bearer SRBs, where 2≤M≤N≤32; in the correspondence, each One level corresponds to one SRB, and each SRB corresponds to at least one level;

When the network side device determines to transmit the control signaling to the UE, according to the level of the control signaling, use the SRB corresponding to the level to transmit the control signaling;

Wherein, the division of the control signaling into N levels includes: dividing the control signaling into control signaling for configuring circuit-switched stream CS services, control signaling for configuring packet-switched stream PS services, and Three levels of other control signaling;

The using the corresponding SRB to transmit the control signaling according to the level of the control signaling includes:

When determining that the control signaling is the control signaling used to configure the CS service, transmit the control signaling through the first SRB;

When it is determined that the control signaling is the control signaling for configuring the PS service, the control signaling is transmitted through the second SRB.

An embodiment of the present invention provides a device for signaling transmission under a combined service, including:

An establishing unit, configured to divide the control signaling into N levels, and establish a correspondence between the N levels and M wireless signaling bearer SRBs, wherein, 2≤M≤N≤32, the correspondence is : Each level corresponds to one SRB, and each SRB corresponds to at least one level;

The transmission unit is used to determine to transmit the control signaling to the UE, according to the level of the control signaling, use the SRB corresponding to the level to transmit the control signaling;

Wherein, the establishing unit is specifically configured to: divide the control signaling into three levels: control signaling for configuring circuit-switched stream CS services, control signaling for configuring packet-switched stream PS services, and other control signaling, Establishing correspondence between the three levels and M SRBs;

The transmission unit is specifically configured to: transmit the control signaling through the first SRB when determining that the control signaling is a control signaling for configuring a CS service; determine that the control signaling is a control signaling for configuring a CS service When signaling, transmit the control signaling through the second SRB.

An embodiment of the present invention also provides a system for signaling transmission under a combined service, including: the above-mentioned network side device;

The UE is configured to receive the control signaling sent by the network side equipment.

The technical effect analysis for the above-mentioned technical scheme is as follows:

Divide the control signaling into N levels, and establish a correspondence between the N levels and M SRBs, where 2≤M≤N≤32, the correspondence is: each level corresponds to one SRB, and Each SRB corresponds to at least one level; when the network side device determines to transmit control signaling to the UE, it uses the SRB corresponding to the level to transmit the control signaling according to the level of the control signaling; thus, the original SRB2 is only used to carry the SRB The control signaling is jointly carried by M SRBs, thereby reducing the possibility of SRB non-recoverable errors caused by one SRB carrying too many control signalings, and improving the timeliness and reliability of service transmission, especially CS service transmission. effectiveness.

Description of drawings

FIG. 1 is a schematic diagram of RB bearer under combined services in the prior art;

FIG. 2 is a flow chart of a method for signaling transmission under the first combined service according to an embodiment of the present invention;

FIG. 3 is a flowchart of a method for signaling transmission under the second combined service according to an embodiment of the present invention;

FIG. 4 is a flowchart of a method for establishing an E-SRB in an embodiment of the present invention;

FIG. 5 is a block diagram of network-side equipment for signaling transmission under combined services according to an embodiment of the present invention;

FIG. 6 is a system block diagram of signaling transmission under combined services according to an embodiment of the present invention.

Detailed ways

In the existing UMTS technology, different SRBs and RBs are distinguished by RB ID (RBI identify, RB identification) in the protocol, and the range of RB ID in the protocol is 1 to 32 (SRB0 is not included). in,

SRB0 (equivalent to RB0) belongs to the common signaling bearer, that is, all UEs can share the bearer, and the bearer does not need to be configured between the network side and the UE; SRB1~4 (equivalent to RB1~4) belong to the dedicated signaling bearer, for Each UE independently occupies the SRB bearer resources of the network side, which can be configured by the network side during the RRC connection establishment process or reconfiguration process. The functions of SRB0/SRB1/SRB2/SRB3/SRB4 are as follows:

SRB0 is used for all signaling on CCCH (Common Control logical Channel, public control logical channel), where RLC (Radio Link Control, radio link control) operation configuration is: uplink transparent transmission mode, downlink non-confirmation mode;

SRB1 is used for all signaling on DCCH (Dedicated Control logical Channel), where RLC operation is configured as non-acknowledged mode;

SRB2 is used for all signaling on DCCH where RLC operation is configured in acknowledged mode;

SRB3 is used for all signaling on DCCH, and the signaling is used to carry NAS signaling, where the RLC operation is configured as acknowledged mode;

SRB4 is used for all transmission of UE INFORMATION RESPONSE (user response information) signaling, optionally for all signaling on DCCH, and signaling is used to carry NAS signaling, where RLC operation is configured as acknowledged mode.

For RB bearers with RB ID between 5 and 32, it can be used for user plane data transmission, and can also be used for all signaling on DCCH. When used for signaling transmission, RLC operation is configured as transparent transmission mode.

In the existing UMTS technology, if the UE sends uplink RRC signaling, the RLC layer will trigger the RLC reset process due to an abnormal transmission or the maximum number of retransmissions due to RLC data packet transmission. If the RLC reconfiguration times reach the maximum reset times, an RLC non-recoverable error will be triggered at this time.

The protocol currently defines that after an RLC non-recoverable error occurs, the UE needs to switch from the CELL_DCH state to the CELL_FACH state. After releasing all dedicated link resources, initiate a cell update process through the public channel to complete the dedicated link reconstruction and try to restore the previous service. This process generally takes a few seconds. If the UE initiates CS services in the CELL_DCH state before, it will cause a delay or even interruption of the CS services, affecting the timeliness and effectiveness of CS service transmission and greatly affecting user experience.

Once the UE in the idle state needs CS service and/or PS service, it first needs to initiate the RRC connection process. After the RRC connection is established, the SRB between the UE and the network side and the corresponding service RB can be established for transmission of different Business. On the premise that the UE has established an RRC connection and initiated CS and/or PS services, SBR2 generally needs to carry the following control signaling: signaling interaction process for RB reconfiguration, such as RB establishment signaling, RB reconfiguration signaling And RB release signaling, etc.; used for mobility measurement process, including measurement control, measurement reporting; used for active set update process, such as active set update signaling, etc.; used for signaling of RRC connection management, such as RRC connection establishment Completion, RRC connection release request signaling, etc.

As shown in Figure 1, when the UE initiates the CS service and the PS service at the same time, that is, initiates the combined service, according to the above analysis, the control signaling carried on SRB2 mainly includes the control signaling listed in 1, 2, and 3 below, Since too many control signalings are carried on the SRB2, it is easy to trigger an RLC non-recoverable error, that is, trigger a non-recoverable error of the SRB2.

1. The control signaling used to configure the CS service, which mainly includes: the control signaling used in the signaling interaction process of the RB configuration for carrying the CS service, such as RB establishment signaling, RB reconfiguration signaling, and RB release Signaling, etc.;

2. Control signaling for configuring PS services, which mainly includes: control signaling used in the signaling interaction process of RB configuration for carrying PS services, such as RB establishment signaling, RB reconfiguration signaling, and RB release Signaling, etc.;

3. Other control signaling, including: control signaling related to access and mobility status and control signaling related to RRC connection establishment, etc., the control signaling related to access includes: during the active set update process The control signaling used, such as active set update signaling, etc.; the control signaling related to the mobility state includes: control signaling used in the mobility measurement process, such as measurement control signaling, measurement reporting signaling, etc.; The control signaling related to the establishment of the RRC connection includes: control signaling used in the process of establishing the RRC connection, such as RRC connection establishment signaling.

Moreover, under the combined service, due to power, coverage and other reasons, when frequent signaling is sent, it is easier to trigger the non-recoverable error of SRB2.

For example, the user is performing a CS service (such as making a phone call) and has completed a certain PS service (such as an application program download). Since the PS service has ended, the network side needs to release the resources corresponding to the PS. According to the protocol specification, the Uu interface (The interface between the UE and the network) needs to perform the PS RB release operation (the signaling is carried on SRB2). At this time, the UE may fail to send the uplink RB Release Complete (RBRelease Complete) signaling, which will affect the CS service. . Similarly, the network side may also detect that the downlink RRC signaling fails to be sent. At this time, the network side may directly release the RRC establishment of the UE or try to reestablish the corresponding SRB2, which will also affect the CS service. Similarly, in the case of PS RB establishment, reconfiguration or other signaling interactions only for PS RB operations, it may also affect the CS service of the UE.

All in all, under the combined service, since the control signaling used to configure the PS service and the CS service is carried on one SRB of SRB2, too many control signaling carried on SRB2 can easily trigger a non-recoverable error of SRB2, and initiate an error to the UE. It affects the timeliness and effectiveness of data transmission of services, especially CS services.

Therefore, the embodiments of the present invention provide a method and device for signaling transmission under combined services, in which the control signaling carried only by SRB2 in the prior art is carried by at least two SRBs to reduce the signaling overhead carried by SRBs , thereby reducing the possibility of non-recoverable errors occurring in the SRB, and improving the timeliness and effectiveness of service transmission.

Hereinafter, the implementation of the signaling transmission method and device under the combined service in the embodiment of the present invention will be described in detail in conjunction with the accompanying drawings.

Fig. 2 is the first embodiment of the signaling transmission method under the combined service of the embodiment of the present invention, the combined service includes: CS service and PS service; as shown in Fig. 2, the method includes:

Step 201: The network-side device divides the control signaling into N levels, and establishes a correspondence between the N levels and M SRBs, wherein, 2≤M≤N≤32, in the correspondence, each A level corresponds to one SRB, and each SRB corresponds to at least one level;

Wherein, the control signaling in the embodiment of the present invention refers to the control signaling carried on the SRB2 in the prior art.

When classifying the control signaling, it can be divided according to the methods indicated in 1, 2, and 3 above, so that the control signaling can be divided into: control signaling for configuring CS services, and control signaling for configuring PS services And three levels of other control signaling. The above three-level division according to the service corresponding to the control signaling is only an example. In practical applications, the control signaling can also be divided into only two levels, or divided into four levels or even more levels. The specific number of levels And the division method is not limited here.

Or, it may also be divided according to the priority of the control signaling or other parameter information of the control signaling, which is not limited here. For example, according to the priority of control signaling, it is divided into high priority, medium priority, and low priority, and each priority level corresponds to an SRB, so that the control signaling used to configure CS services and the control signaling used to configure PS services can be divided into The control signaling with high priority in the control signaling is carried on one SRB, and the other control signaling used to configure CS services and the control signaling used to configure PS services are carried as medium priority signaling on another SRB In addition, the other control signaling is carried on the third SRB as low-priority control signaling, so that the transmission efficiency of the CS service can be further improved.

Step 202: When the network side device determines to transmit the control signaling to the UE, according to the level of the control signaling, the SRB corresponding to the level is used to transmit the control signaling.

In the signaling transmission method under the combined service shown in Figure 2, the control signaling that was originally carried by only one SRB of SRB2 is carried by M SRBs, thereby reducing the burden caused by one SRB carrying too many control signalings. The possibility of SRB non-recoverable errors improves the timeliness and effectiveness of service transmission, especially CS service transmission.

On the basis of Figure 2, the method for signaling transmission under the combined service of the embodiment of the present invention is described in more detail through Figure 3. In this method, the control signaling is divided into control signaling for configuring CS services As an example, three levels of signaling, control signaling for configuring PS services, and other control signaling; as shown in Figure 3, include:

Step 300: The network side device divides the control signaling into N levels, and establishes the corresponding relationship between the N levels and M SRBs, where 2≤M≤N≤32, the corresponding relationship is: each A class corresponds to one SRB, and each SRB corresponds to at least one class.

In the embodiment of the present invention shown in FIG. 3 , the value of N is 3, and the value of M is also 3.

Step 301: When the network side device determines to transmit the control signaling to the UE, according to the level of the control signaling, when determining that the control signaling is a control signaling for configuring CS services, transmit the control signaling through the first SRB; When it is determined that the control signaling is the control signaling used to configure the CS service, transmit the control signaling through the second SRB; when it is determined that the control signaling is other control signaling, transmit the control signaling through the third SRB .

In this step, it is determined that M is 3, that is, the three levels correspond to three different SRBs; in practical applications, only the first SRB and the second SRB may be included. At this time, the control signal is determined in this step When the command is other control signaling, the control signaling is transmitted through the first SRB, or the control signaling is transmitted through the second SRB.

The first SRB is SRB2; the other M-1 SRBs are newly established E-SRB (Enhanced-Signalling Radio Bearer, enhanced wireless signaling bearer) or SRB1 or SRB3 or SRB4, and the newly established E-SRB The RB ID is any value between 5 and 32.

The newly established E-SRB described in the embodiment of the present invention refers to: establishing an RB whose RB ID is between 5 and 32 in the prior art as an SRB. When the RB ID of the SRB is 0 or 1 or 3 or 4, it means that the function of the SRB in the prior art has been extended, so that in the embodiment of the present invention, these SRBs realize the control of the bearer on the SRB2 in the prior art signaling transmission.

Wherein, the establishment method of the E-SRB and the extension method of the SRB1 or SRB3 or SRB4 are described later in FIG. 4 and the corresponding description thereof, and will not be repeated here.

Step 302: The network side device receives the acknowledgment signaling corresponding to the control signaling fed back by the UE on the SRB that sends the control signaling.

Based on the above embodiments, when the UE receives the control signaling transmitted by the network side equipment on the SRB, it feeds back the acknowledgment signaling corresponding to the control signaling on the SRB that transmits the control signaling, thereby ensuring that the control signaling is sent across M SRBs. Highly reliable transmission on the

Hereinafter, the method for establishing the E-SRB in the embodiment of the present invention is illustrated by FIG. 4. In this method, the network side device is implemented by the RNC, wherein:

Step 401: During the establishment of the RRC connection, the UE indicates to the RNC whether the UE supports the establishment of an E-SRB;

Specifically, the UE may carry indication information whether to support E-SRB establishment in any uplink RRC signaling during the RRC connection establishment process, so as to indicate to the network side device whether the UE supports E-SRB establishment through the indication information.

Step 402: When the RNC receives the instruction from the UE and determines that the UE supports the establishment of the E-SRB, it selects at least one RB whose RB ID is between 5 and 21, and uses the selected RB to carry RRC signaling.

Wherein, the logical channel corresponding to the selected RB is DCCH, and the corresponding RLC mode may be RLC unacknowledged mode or RLC confirmed mode.

Step 403: the RNC completes the configuration of the E-SRB with the Node B.

The configuration information includes: configuration information carried by the E-SRB on the Iub interface, more specifically, resource information, code channel information, power information, etc. allocated to the E-SRB.

Preferably, the E-SRB can be carried on a DCH (Dedicated Channel, dedicated transport channel), or can also be carried on a HS-DSCH (High Speed-Downlink Shared Channel, downlink high-speed shared transport channel) and/or E-DCH (Enhanced Dedicated Channel, uplink enhanced dedicated channel) and so on, there is no limit here.

Step 404: The RNC carries the E-SRB configuration information in the downlink RRC signaling.

Wherein, in step 402, it has been pointed out that the configured E-SRB can be one or more, and the configuration information of each E-SRB mainly includes:

(1) RB ID; its range is 5 to 32 (with reference to the prior art, RB 0 to 4 have been used for SRB);

(2) RLC configuration information; the main content is as follows: Acknowledgment mode RLC configuration information, mainly including RLC sending window size, timer configuration for sending reset RLC PDU, maximum number of reset PDU sending; non-acknowledgment mode RLC Configuration information, mainly including RLC discard mode;

(3) Configure the same RB ID as other RBs; for example, SRB 1 has been configured, and RB 6 is configured as E-SRB at this time, and the RLC configuration information of E-SRB is the same as that of SRB 1. At this time, the RB ID can be filled in as 1;

(4) RB mapping information; the main content is as follows: uplink and downlink transmission channel type, transmission channel ID, and corresponding logical channel ID; RLC PDU length mode, fixed length setting or flexible length setting.

Step 405: configure E-SRB rules in RNC and UE.

The rules of the E-SRB can be pre-set in the RNC and UE, or explicitly stated in the protocol or standard, so that the control signaling can be transmitted according to the rules in the subsequent transmission of the control signaling.

For example, the rules may include:

During the RRC connection establishment phase, the RNC directly establishes one or more (including SRB2) SRBs and E-SRBs among SRB1-SRB4;

If a single service is configured, the corresponding rules in the prior art are used to transmit the control signaling, and at this time, the E-SRB may not bear any control signaling;

If the combined service of CS and PS is configured, use SRB2 to carry the control signaling for configuring CS services, E-SRB to carry the control signaling for configuring PS services and other control signaling, and other SRB0/SRB1/SRB2/SRB3 The control signaling carried on /SRB4 remains unchanged.

Step 406: The UE configures the E-SRB according to the E-SRB configuration information. When the E-SRB configuration is completed, the UE instructs the RNC that the E-SRB configuration is completed; when the E-SRB configuration fails, the UE instructs the RNC that the E-SRB configuration is completed. fail.

Wherein, when the UE sends the uplink RRC signaling to the RNC, the uplink RRC signaling may carry the indication information of E-SRB configuration completion. For example, the uplink RRC signaling may be RRC establishment completion signaling, RB establishment completion signaling, RB reconfiguration completion signaling, and the like.

When UE fails to configure E-SRB, it includes the following two situations:

(1) If the RNC requires to configure only E-SRB, the UE can carry the indication information of E-SRB configuration failure in control signaling such as RRC establishment failure, RB establishment failure, or RB reconfiguration failure, for example, in a certain The preset field carries the RB ID of the E-SRB, etc.;

(2) If the RNC requires to configure one or more of SRB1-SRB4 (including SRB2) and E-SRB, there are two cases:

If the configuration of other RBs except E-SRB also fails, the UE can carry the RB ID of the SRB whose configuration failed in signaling such as RRC establishment failure signaling, RB establishment failure signaling, or RB reconfiguration failure signaling;

If only the E-SRB configuration fails and the other SRB configurations are successful, the UE can carry the E-SRB configuration failure indication information in RRC establishment completion signaling, RB establishment completion signaling, or RB reconfiguration completion signaling, etc. , such as carrying the RB ID of the E-SRB in a certain preset field.

In addition, for the method of extending the original SRB1, SRB3, and SRB4, reference may be made to the E-SRB establishment method described in FIG. 4 , which will not be repeated here.

Corresponding to the above signaling transmission method, an embodiment of the present invention also provides a device for signaling transmission under a combined service, as shown in FIG. 5 , the device includes:

The establishment unit 510 is configured to divide the control signaling into N levels, and establish a correspondence between the N levels and M SRBs, wherein, 2≤M≤N≤32, the correspondence is: each A level corresponds to one SRB, and each SRB corresponds to at least one level;

The transmission unit 520 is configured to, when determining to transmit the control signaling to the UE, use the SRB corresponding to the level to transmit the control signaling according to the level of the control signaling.

Preferably, the control signaling can be divided into three levels: control signaling for configuring CS services, control signaling for configuring PS services, and other control signaling; at this time,

The establishment unit is specifically configured to: divide the control signaling into three levels: control signaling for configuring CS services, control signaling for configuring PS services, and other control signaling, and establish the relationship between the three levels and M Correspondence between SRBs;

The transmission unit 520 may be specifically configured to: when determining that the control signaling is a control signaling for configuring a CS service, transmit the control signaling through the first SRB; determine that the control signaling is a control signaling for configuring a CS service During signaling, the control signaling is transmitted through the second SRB.

Preferably, the transmission unit 520 may also be configured to: transmit the control signaling through the third SRB when it is determined that the control signaling is other control signaling;

Alternatively, the transmitting unit 520 may be further configured to: when it is determined that the control signaling is other control signaling, transmit the control signaling through the first SRB, or transmit the control signaling through the second SRB.

Preferably, the first SRB is SRB2; the other M-1 SRBs are newly established E-SRBs or SRB1 or SRB3 or SRB4, and the RB ID of the newly established E-SRB is any number between 5 and 32. a value.

At this time, the device may also include the following structure, so as to establish the E-SRB:

The second receiving unit is used to receive the indication information of whether to support the establishment of E-SRB sent by the UE during the uplink RRC establishment process;

A selection unit, configured to select an RB whose RB ID is between 5 and 32 as the E-SRB according to the indication information of whether to support the establishment of the E-SRB;

The first sending unit is used to complete the configuration of the E-SRB with the Node B, and send the configuration information of the E-SRB to the UE, so that the UE performs E-SRB configuration according to the configuration information;

The third receiving unit is configured to receive a response message from the UE to the completion of E-SRB configuration.

Preferably, as shown in Figure 5, the device may also include:

The first receiving unit 530 is configured to receive, on the SRB that sends the control signaling, the acknowledgment signaling corresponding to the control signaling fed back by the UE.

In addition, an embodiment of the present invention also provides a system for signaling transmission under a combined service, as shown in FIG. 6 , the system includes:

The network side device 610 is configured to divide the control signaling into N levels, and establish a corresponding relationship between the N levels and M SRBs, where 2≤M≤N≤32, the corresponding relationship is: each One level corresponds to one SRB, and each SRB corresponds to at least one level; when the network side device determines to transmit control signaling to the UE, it uses the SRB corresponding to the level to transmit the control signaling according to the level of the control signaling;

UE620, configured to receive the control signaling sent by the network side equipment.

For the implementation structure of the network side device 610, reference may be made to FIG. 5 and the description about the implementation structure of the network side device, which will not be repeated here.

In addition, in cooperation with the network-side device 610, the UE 620 may also be configured to: feed back the acknowledgment signaling corresponding to the control signaling to the network-side device on the SRB that receives the control signaling.

At this point, UE620 may include:

The fourth receiving unit is configured to receive the control signaling sent by the network side device on the SRB;

The second sending unit is configured to, on the SRB that receives the control signaling, feed back the acknowledgment signaling corresponding to the control signaling to the network side device.

In addition, when the SRB in the signaling transmission between the network side device 610 and the UE 620 includes: E-SRB, the UE 620 can also be used to: send an indication to the UE whether to support the establishment of the E-SRB during the uplink RRC establishment process information, so that the network side device configures the E-SRB according to the indication information; receives the configuration information of the E-SRB sent by the network side device, and configures the E-SRB according to the configuration information.

Therefore, the establishment of the E-SRB used in the fourth receiving unit and the second sending unit is realized through the cooperation of the UE620 and the network side device 610. At this time, the UE620 may also include the following structure:

The third sending unit is configured to send indication information to the UE whether to support the establishment of the E-SRB during the uplink RRC establishment process, so that the network side equipment performs E-SRB configuration according to the indication information;

The fifth receiving unit is configured to receive the configuration information of the E-SRB sent by the network side device, and configure the E-SRB according to the configuration information.

Based on the above embodiments, when the network side device determines to transmit the control signaling to the UE, the SRB corresponding to the level is used to transmit the control signaling; thus, the control signaling originally carried by only one SRB of SRB2 is shared by M SRBs. Bearing, thereby reducing the possibility of SRB non-recoverable errors caused by an SRB carrying too much control signaling, and improving the timeliness and effectiveness of service transmission, especially CS service transmission.

Those of ordinary skill in the art can understand that the process of realizing the method of the above-mentioned embodiment can be completed by the related hardware of the program instruction, and the described program can be stored in a readable storage medium, and the program executes the above-mentioned method when executed. Corresponding steps. The storage medium may be, for example: ROM/RAM, magnetic disk, optical disk, etc.

The above is only a preferred embodiment of the present invention, it should be pointed out that, for those of ordinary skill in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications can also be made. It should be regarded as the protection scope of the present invention.

Claims (15)

1. A method for signaling transmission under a combined service, characterized in that, comprising: The network-side device divides the control signaling into N levels, and establishes a correspondence between the N levels and M wireless signaling bearer SRBs, where 2≤M≤N≤32; in the correspondence, each One level corresponds to one SRB, and each SRB corresponds to at least one level; When the network side device determines to transmit the control signaling to the user equipment UE, according to the level of the control signaling, use the SRB corresponding to the level to transmit the control signaling; Wherein, the division of the control signaling into N levels includes: dividing the control signaling into control signaling for configuring circuit-switched stream CS services, control signaling for configuring packet-switched stream PS services, and Three levels of other control signaling; The using the corresponding SRB to transmit the control signaling according to the level of the control signaling includes: When determining that the control signaling is the control signaling used to configure the CS service, transmit the control signaling through the first SRB; When it is determined that the control signaling is the control signaling for configuring the PS service, the control signaling is transmitted through the second SRB. 2. The method according to claim 1, further comprising: When it is determined that the control signaling is other control signaling, transmit the control signaling through the third SRB. 3. The method according to claim 1, further comprising: When it is determined that the control signaling is other control signaling, transmit the control signaling through the first SRB, or transmit the control signaling through the second SRB. 4. The method according to any one of claims 1 to 3, wherein the first SRB is SRB2; the other M-1 SRBs are newly established enhanced wireless signaling bearers E-SRB or SRB1 or SRB3 or SRB4, the radio bearer identifier RB ID of the newly established E-SRB is any value between 5 and 32. 5. The method according to any one of claims 1 to 3, further comprising: The network side device receives the acknowledgment signaling corresponding to the control signaling fed back by the UE on the SRB that sends the control signaling. 6. The method according to claim 4, wherein the method for establishing the newly established E-SRB comprises: The network side device receives the indication information of whether to support the establishment of E-SRB sent by the UE during the establishment process of the uplink radio resource control RRC; The network side device selects an RB whose RB ID is between 5 and 32 as the E-SRB according to the indication information of whether to support the establishment of the E-SRB; The network side device completes the configuration of the E-SRB with the Node B, and sends the configuration information of the E-SRB to the UE, so that the UE performs E-SRB configuration according to the configuration information; Receiving a response message from the UE to the completion of E-SRB configuration. 7. A device for signaling transmission under a combined service, characterized in that it comprises: An establishing unit, configured to divide the control signaling into N levels, and establish a correspondence between the N levels and M wireless signaling bearer SRBs, wherein, 2≤M≤N≤32, the correspondence is : Each level corresponds to one SRB, and each SRB corresponds to at least one level; The transmission unit is used to determine to transmit the control signaling to the user equipment UE, according to the level of the control signaling, use the SRB corresponding to the level to transmit the control signaling; Wherein, the establishing unit is specifically configured to: divide the control signaling into three levels: control signaling for configuring circuit-switched stream CS services, control signaling for configuring packet-switched stream PS services, and other control signaling, Establishing correspondence between the three levels and M SRBs; The transmission unit is specifically configured to: transmit the control signaling through the first SRB when determining that the control signaling is a control signaling for configuring a CS service; determine that the control signaling is a control signaling for configuring a CS service When signaling, transmit the control signaling through the second SRB. 8. The device according to claim 7, wherein the transmission unit is further configured to: transmit the control signaling through the third SRB when it is determined that the control signaling is other control signaling. 9. The device according to claim 7, wherein the transmission unit is further configured to: when determining that the control signaling is other control signaling, transmit the control signaling through the first SRB, or transmit the control signaling through the second SRB The SRB transmits the control signaling. 10. The device according to any one of claims 7 to 9, wherein the first SRB is SRB2; the other M-1 SRBs are newly established enhanced wireless signaling bearers E-SRB or SRB1 or SRB3 or SRB4, the radio bearer identifier RB ID of the newly established E-SRB is any value between 5 and 32. 11. The device according to any one of claims 7 to 9, further comprising: The first receiving unit is configured to receive, on the SRB that sends the control signaling, the acknowledgment signaling corresponding to the control signaling fed back by the UE. 12. The device of claim 11, further comprising: The second receiving unit is used to receive the indication information of whether to support the establishment of E-SRB sent by the UE during the establishment process of the uplink radio resource control RRC; A selection unit, configured to select an RB whose RB ID is between 5 and 32 as the E-SRB according to the indication information of whether to support the establishment of the E-SRB; The first sending unit is used to complete the configuration of the E-SRB with the Node B, and send the configuration information of the E-SRB to the UE, so that the UE performs E-SRB configuration according to the configuration information; The third receiving unit is configured to receive a response message from the UE to the completion of E-SRB configuration. 13. A system for signaling transmission under a combined service, characterized in that it comprises: The network side device according to any one of claims 7 to 12; The user equipment UE is configured to receive the control signaling sent by the network side equipment. 14. The system according to claim 13, wherein the UE is further configured to: feed back the information corresponding to the control signaling to the network side device on the radio signaling bearer (SRB) receiving the control signaling Acknowledgment signaling. 15. The system according to claim 13 or 14, wherein the UE is further configured to: during the uplink radio resource control (RRC) establishment process, send to the network side equipment whether to support enhanced radio signaling bearer E-SRB The instruction information is established, so that the network side device configures the E-SRB according to the instruction information; receives the configuration information of the E-SRB sent by the network side device, and performs the configuration of the E-SRB according to the configuration information.