WO2011035488A1

WO2011035488A1 - Method and apparatus for signaling transmission

Info

Publication number: WO2011035488A1
Application number: PCT/CN2009/074262
Authority: WO
Inventors: 张亮亮; 李亚娟; 常俊仁; 陈卓; 郭雅莉
Original assignee: 华为技术有限公司
Priority date: 2009-09-27
Filing date: 2009-09-27
Publication date: 2011-03-31
Also published as: CN102246552A; CN102246552B

Abstract

A method and apparatus for signaling transmission are provided by the embodiments of the present invention. One method comprises: configuring signaling identification for the signaling to be transmitted, and performing scheduling processing to the signaling based on the signaling identification, transmitting the signaling via air interface on Data Radio Bearer (DRB). Another method comprises: recognizing the network element to which the signaling to be transmitted belongs, processing the signaling by use of Radio Resource Control (RRC) layer, thus transmitting the signaling of User Equipment (UE) between the relay node (RN) and the base station based on the first type of Signaling Radio Bearer (SRB), and transmitting the signaling of RN between the RN and the base station based on the second type of SRB. The embodiments of the present invention can optimize the scheduling processing to the signaling, and ensure the reliable and effective transmission of the signaling.

Description

Signaling transmission method and device

The embodiments of the present invention relate to communication technologies, and in particular, to a signaling transmission method and apparatus. Background technique

In 2006, the International Telecommunication Union (ITU-R) officially named the 3G (Beyond 3G; B3G) technology as the advanced International Mobile Telecommunications-Advanced (hereinafter referred to as IMT- Advanced) technology, IMT-Advanced technology needs to achieve higher data rates and greater system capacity, target peak rates are: low-speed mobile, hotspot coverage scenarios above 1Gbps (gigabits per second), high-speed mobile, wide-area coverage scenarios Under 100Mbps (megabits per second). Currently, various standardization organizations are conducting formal or informal research on IMT-Advanced, including the third-generation partner, the 3rd Generation Partnership Project (hereinafter referred to as 3GPP) standardization organization. Since 3GPP is standardizing the Long Term Evolution (LTE) technology, which already has some of the technical features of IMT-Advanced, 3GPP is preparing to further evolve LTE into LTE-A (LTE-Advanced) technology, thus forming the European IMT- An important source of Advanced technology proposals.

Figure 1 is a schematic diagram of an existing LTE network architecture, including an evolved packet core network (Evolved Packet Core; EPC), and an evolved Universal Mobile Telecommunications System (UMTS) terrestrial radio access network ( Evolved UMTS Territorial Radio Access Network; hereinafter referred to as: E-UTRAN) and User Equipment (hereinafter referred to as UE). The EPC includes a Mobility Management Entity (hereinafter referred to as MME), a Serving Gateway (hereinafter referred to as S-GW), and a Packet Data Network Gateway (hereinafter referred to as PDN-GW). ₀ E-UTRAN includes an evolved base station (evolved NodeB; hereinafter referred to as eNodeB). The SI interface between the eNodeB and the MME/S-GW interacts with the SI interface. The SI interface between the LSP and the eNodeB can be represented as an S1-MME interface. The S1 interface between the S-GW and the eNodeB can be represented as S1-U. Interfaces: Each eNodeB interacts with an X2 interface, and the eNodeB interacts with the UE through a Uu air interface of a wireless link.

High system capacity requirements are proposed when implementing LTE-A networks based on LTE networks, but large bandwidth spectrums capable of supporting high system capacity may only be found in higher frequency bands, and path loss and penetration of such high frequency bands The losses are large and it is difficult to achieve good coverage. Therefore, in order to meet the capacity requirements of IMT-Advanced, LTE-A networks are currently studying relay technology as a candidate for improving system capacity and coverage. The so-called relay technology, taking a simple two-hop relay as an example, is to divide the wireless link between the eNodeB and the UE into a wireless link between the eNodeB and the relay station (Relay Node; hereinafter referred to as RN) and The two links between the RN and the UE are wirelessly linked, thereby accommodating a poor quality link with two better quality links for higher link capacity and better coverage. .

The LTE-A network adds an RN to the cornerstone of the LTE network architecture, which is set between the eNodeB and the UE. From the perspective of minimizing changes to existing interface protocols: For the UE, the RN is equivalent to an eNodeB, so the radio link between the UE and the RN is called the Uu air interface, and the radio link between the RN and the eNodeB. Call it Un air. For the eNodeB, when the RN accesses the LTE-A network, the RN is equivalent to one UE. Similarly, the EPC side also provides the E and the gateway serving the RN, which can be represented as the RN's E and gateway, similar. The solid E and the gateway serving the UE are called the UE E and the gateway. A solution provided by the prior art is that the MME/S-GW and the PDN-GW of the UE of the RN are equivalent to accessing the eNodeB and the RN through the gateway of the RN, so as to implement interaction with the UE. Another solution is that the MME/S-GW and the PDN-GW of the UE of the RN directly access the eNodeB and the RN to interact with the UE.

In the existing LTE network, the bearer established between the UE and the PDN-GW of the UE may be referred to as an Evolved Packet System (hereinafter referred to as EPS) bearer. Specifically, a radio bearer (Radio Bearer; hereinafter referred to as RB) is implemented between the UE and the eNodeB. There are two types of RBs. The RB carrying user data is also called data radio bearer (Da ta Radio Bearer; DRB), the RB carrying the message signaling is also called a signaling radio bearer (S i gna ing Rad io Bearer; hereinafter referred to as SRB). In the LTE-A network that introduces the RN, the relay bearer between the RN, the eNodeB, and the RN of the RN is added to the EPS bearer.

At present, a signaling transmission scheme has been proposed for the case of the LTE-A network. In the process of transmitting the UE signaling on the control plane of the UE, the Uu air interface remains unchanged, and the original control plane protocol stack is used. Transmit signaling. The signaling is mapped to the user plane for transmission in the relay bearer, which is equivalent to being transmitted as user data on the Un interface, that is, the DRB is used to transmit signaling, that is, the UE is used in the Un air interface between the RN and the eNodeB. The way Uu air interface user plane transmission between the eNodeB and the eNodeB.

However, in the process of implementing the technical solution of the present invention, the inventor has found that the foregoing technical solutions proposed by the prior art have at least the following problems. The prior art does not regulate the transmission mechanism of the signaling on the Unair interface DRB, and the eNodeB cannot communicate with the RN. Provide reliable and efficient transmission services for signaling. Summary of the invention

Embodiments of the present invention provide a signaling transmission method and apparatus to provide reliable and efficient transmission services for signaling between a base station and a relay station.

The embodiment of the invention provides a signaling transmission method, including:

The signaling identifier is configured for the signaling to be sent, and the signaling is processed according to the signaling identifier, and the signaling is transmitted as the user data in the air interface.

The embodiment of the invention further provides a signaling transmission device, including:

a configuration module, configured to configure a signaling identifier for the signaling to be sent;

And a transmitting module, configured to perform scheduling processing on the signaling according to the signaling identifier, and transmit the signaling in the air interface as user data.

The embodiment of the present invention adopts a technical means for signaling signaling configuration, and can indicate that the RN or the base station performs scheduling processing different from the data signaling when the user data transmission signaling is used, so that the signaling can be reliable as user data. Effective transmission.

An embodiment of the present invention provides another signaling transmission method, including: Identifying the to-be-transmitted signaling, and using the radio resource control RRC layer to process the signaling, the processing includes: transmitting signaling of the UE between the RN and the base station based on the first type of SRB, and signaling the RN The RN and the base station transmit based on the second type of SRB.

An identification module, configured to identify signaling to be sent;

a UE signaling processing module, configured to: when the identification module identifies that the signaling is a signaling of the UE, use a radio resource control RRC layer to process the signaling, so that the signaling of the UE is at the RN and the base station. Transfer between the first type of SRBs;

An RN signaling processing module, configured to: when the identifying module identifies that the signaling is an RN signaling, use a radio resource control RRC layer to process the signaling, so that the signaling of the RN is at the RN and the base station. The transmission is based on the second type of SRB.

In the embodiment of the present invention, different SRB bearers are used to distinguish between the signaling of the UE and the signaling of the RN, so that the signaling of the UE and the signaling of the RN are separately scheduled to ensure that the signaling can be reliably and efficiently transmitted based on the SRB. DRAWINGS

FIG. 1 is a schematic diagram of an existing LTE network architecture;

2 is a schematic diagram of a user plane protocol stack architecture of a UE in an LTE network;

3 is a schematic diagram of a control plane protocol stack architecture of a UE in an LTE network;

4 is a schematic diagram of a user plane protocol stack architecture in the first and third relay architectures of the LTE-A network;

5 is a schematic diagram of a control plane protocol stack architecture in a first relay architecture of an LTE-A network; FIG. 6 is a schematic diagram of a user plane protocol stack architecture in a second relay architecture of an LTE-A network; FIG. 7 is an LTE-A FIG. 8 is a schematic diagram of a user plane protocol stack architecture in a third relay architecture of the LTE-A network; FIG. 9 is a schematic diagram of a user plane protocol stack architecture in a third relay architecture of the LTE-A network; Flow chart of signaling transmission method; FIG. 10 is a flowchart of a signaling transmission method according to Embodiment 3 of the present invention; FIG. 11 is a flowchart of a signaling transmission method according to Embodiment 4 of the present invention;

FIG. 12 is a flowchart of a signaling transmission method according to Embodiment 5 of the present invention;

13 is a schematic structural diagram of a control plane protocol based on Embodiment 6 of the present invention;

FIG. 14 is a schematic structural diagram of a signaling transmission apparatus according to Embodiment 9 of the present invention; FIG. 15 is a schematic structural diagram of a signaling transmission apparatus according to Embodiment 10 of the present invention; FIG. 17 is a schematic structural diagram of a signaling transmission apparatus according to Embodiment 12 of the present invention; FIG. 18 is a schematic diagram of a signaling transmission apparatus according to Embodiment 13 of the present invention; FIG. 19 is a schematic structural diagram of another signaling transmission apparatus according to Embodiment 14 of the present invention. detailed description

The present invention will be further described in detail below by way of specific embodiments and drawings.

Embodiment 1

A first embodiment of the present invention provides a signaling transmission method, including the following steps:

The signaling identifier is configured for the signaling to be sent, and the signaling is scheduled according to the signaling identifier, and the signaling is transmitted as the user data in the air interface.

The technical solutions of the embodiments of the present invention are preferably applicable to an LTE-A network, and the air interface may be an Unair interface between the RN and the eNodeB. It may also be another air interface in the LTE-A network, such as a Uu air interface between the UE and the eNodeB, or may be other air interfaces in other networks. The signaling is transmitted as user data, and in the LTE-A network, the signaling can be transmitted based on the DRB.

For other networks, such as Wideband Code Divided Access (WCDMA) network, WOR ldwide Interoperabi ty for Microwave Acces s; The WiMAX network or the like can similarly transmit the signaling as the user data in the air interface. The signaling configuration identifier is used in the embodiments of the present invention, and the scheduling processing different from the user data can be applied to various networks. Clear For the following, the following embodiments of the present invention are described by taking the Un air interface between the RN and the eNodeB in the LTE-A network as an example.

In this embodiment, the signaling means for signaling signaling is configured to indicate the network element nodes on both sides of the air interface. For example, the RN or the eNodeB on both sides of the Un air interface distinguishes the signaling from the data when transmitting the signaling based on the DRB. Scheduling processing ensures that signaling can be reliably and efficiently transmitted based on DRB. The signaling may be any signaling that is transmitted on the air interface, and may be any signaling that is transmitted over the radio link between the RN and the eNodeB. For example, it may be S1 interface signaling or X2 interface signaling, which is currently being defined. In the LTE-A network, the method in this embodiment is particularly applicable to Un air interface transmission signaling between the RN and the eNodeB.

In this embodiment, the protocol stack of each layer of the air interface performs scheduling processing on the signaling according to the signaling identifier, and may perform encryption and integrity protection processing on the data packet including the signaling according to the signaling identifier, and the executable scheduling processing manner may be The following description will give a detailed description based on actual needs.

In this embodiment, the signaling identifier is configured for signaling, and the implementation scheme of scheduling processing according to the signaling identifier may be multiple, and different implementation forms are implemented in different relay architectures. For the convenience of the following description, the following describes the protocol stack architecture of the LTE network protocol architecture and the LTE-A network three relay architectures provided by the prior art, but the technical solutions of the embodiments of the present invention are not limited to the three relays. Implemented in the architecture.

In the existing LTE network without introducing the RN, the user plane protocol stack architecture and the control plane protocol stack architecture of the UE are as shown in FIG. 2 and FIG. 3. The user plane protocol stack is shown in Figure 2. The Uu air interface user plane protocol stack between the UE and the eNodeB includes a physical layer (Phys ica l Layer; hereinafter referred to as PHY) and media access control (Medium Acces s Control; hereinafter referred to as MAC). Layer, Radio Link Control (hereinafter referred to as RLC) layer and Packet Data Convergence Protocol (PDCP) layer. The Sl-U interface between eNobeB and S-GW includes L1 layer, L2 layer, UDP/IP (User Datagram Protocol/Internet Protocol) layer and GPRS user plane tunneling protocol (GPRS (General Purpose) Packet Radio Service, Genera l Packet Radio Service ) Tunneling Protoco l for User Plane; hereinafter referred to as: GTP-U) layer. The S5/S8 interface between the S-GW and the PDN-GW has a similar hierarchy to the Sl-U interface.

The control plane protocol stack architecture of the UE is shown in Figure 3. Compared with the user plane protocol stack architecture, the difference is that there is radio resource control (Radio Resource Control; hereinafter referred to as RRC) layer in the Uu air interface; between eNodeB and solid E The S1-MME interface includes an L1 layer, an L2 layer, an SCTP/IP layer, and an S1 application protocol (hereinafter referred to as S1-AP) layer. When using the X2 interface, this is X2-AP instead of S1-AP.

The data and signaling are transmitted on the user plane and the control plane respectively. The user plane and control plane protocol stack architecture adopted by the UE in the S1 interface and the user and the data and signaling of the UE are used in the X2 interface. The face and control plane protocol stack architecture is basically the same. The following is an example of the protocol stack architecture of the UE on the S1 interface.

In the network using the relay technology, the protocol used by the UE control plane and the user plane protocol stack on the Un interface is different. The user plane uses GTP-U/UDP/IP protocol to process data, and the control plane adopts S1-AP/SCTP/IP. The protocol handles signaling, or uses X2-AP/SCTP/IP to process signaling. The packet that encapsulates signaling may be called S1-AP/SCTP/IP packet or X2-AP/SCTP/IP packet, according to specific application. Different protocols can also package data packets for other protocols. In general, signaling needs to be integrity protected and encrypted when processed at the PDCP layer. Data is only encrypted when processed at the PDCP layer. The following analysis and embodiments only take the S1-AP/SCTP/IP protocol stack as an example. The X2-AP/SCTP/IP is basically the same as the S1-AP/SCTP/IP protocol stack, and will not be repeated below.

In the LTE-A network that introduces the RN, the difference between the three types of relay architectures currently defined is: In the first type of trunk architecture, the gateway physical entity serving the RN is independent of the eNodeB; in the second trunk architecture, the eNodeB The RN service gateway logical entity is merged, and the eNodeB is integrated with the function of the RN's gateway. When performing different operations, it can be represented as a gateway function entity or a base station function entity respectively. In the third relay architecture, the eNodeB is merged. A gateway logical entity that serves the RN, but logically functionally independent.

The user plane protocol stack and the control plane protocol stack architecture of the three relay architectures of the LTE-A network are respectively shown in the figure. 4 to 8, wherein the control plane protocol stack architecture of the first and third relay architectures is similar, except that the RN's gateway logical entity is merged into the physical entity of the eNodeB.

In the second relay architecture, the UE's S1 interface user plane protocol stack architecture is shown in Figure 6. The eNodeB incorporates the RN's gateway function. The eNodeB maintains a pre-conf igured mapping table. The mapping table stores a mapping of a user-bearing QCI (Quality Level Indicator), a UE bearer QCI, and a RN bearer (QCI), and stores a quality of service parameter corresponding to each QCI. After receiving the data packet encapsulated by the S-GW sent by the UE, the eNodeB carries the user-carrying QCI, and the eNodeB can map the user bearer QCI to the relay bearer QCI according to the pre-configured mapping table, according to the relay bearer QCI. The UE's data is transmitted to the RN based on the DRB. Alternatively, the eNodeB can also query the relay bearer QCI and the QoS parameter corresponding to the QCI from the other network element. In general, the eNodeB can map the user bearer QCI into the relay bearer QCI by various methods.

In the first and third relay architectures, the UE's S1 interface user plane protocol stack architecture is shown in Figures 4 and 8. In the first type of relay architecture, the eNodeB is separately configured from the PDN-GW of the RN. In the third relay architecture, the eNodeB incorporates the PDN-GW function of the RN. In the first and third relay architectures, the gateway function entity having the RN maintains a similar pre-configuration mapping table in which the user bearer QCI and the relay bearer QCI have a mapping relationship and corresponding Quality of service parameters. After receiving the data packet encapsulated by the S-GW of the UE, the RN gateway maps the user bearer QCI to the relay bearer QCI according to the pre-configuration mapping table, and the UE is configured according to the quality of service parameter corresponding to the relay bearer QCI. The data is transmitted to the eNodeB, and the eNodeB transmits the signaling to the RN based on the DRB through the air interface.

In the above three trunking architectures, the control plane of the UE remains unchanged in the Uu air interface, using the original control plane protocol stack, and processing on the Un interface using S1-AP/SCTP/IP or X2-AP/SCTP/IP protocols. Signaling, forming an S1-AP/SCTP/IP packet or an X2-AP/SCTP/IP packet, but since there is no RRC layer in the three trunk architecture Un ports, the S1-AP/SCTP/IP packet or X2- is specified. The AP/SCTP/IP packet is transmitted on the DRB, that is, the signaling used in the Un port is a user plane protocol stack similar to LTE, in the Un port. The signaling is equated with user data for processing and transmission, that is, the signaling is handled and transmitted as user data at each layer of the protocol station. In the prior art, as one of the parameters of the quality of service (hereinafter referred to as QoS), the QCI is configured for user data. Now, signaling is transmitted as user data based on DRB. How to distinguish the DRB containing signaling and the DRB containing real user data has become an unsolved problem in the prior art.

Generally, in order to ensure secure, reliable and efficient transmission of signaling, the requirements of signaling are higher than the requirements of data. For example, signaling requires higher reliability from the perspective of security, and integrity protection is required, but data is not required. Integrity protection; the priority of signaling is usually higher than the priority of the data; thus, especially in the scheduling process, the system usually prioritizes the signaling, and thus the signaling delay is relatively small. If the signaling is carried in a DRB, in order to ensure the reliability and validity of the signaling, the signaling should have a transmission different from the general user data. For example, the QCI should be different from the normal user data. The DRB or other means to distinguish between the DRB carrying the signaling and the DRB carrying the user data.

In order to solve this problem effectively, the present invention will be further described in detail below by way of specific embodiments and the accompanying drawings.

The so-called QCI can be a value, for example, from 1 to 9. Each QCI corresponds to a series of quality of service parameters, including resource type, priority, packet delay budget, and packet loss rate. The resource type is used to determine whether the proprietary network resources related to the Guaranteed Bit Rate (GBR) value of the service or bearer level can be constantly allocated, and thus are classified into GBR and non-GBR (non- GBR). The GBR service data stream (Service Sa ta Dlow; hereinafter referred to as: SDF) set requires dynamic policy and charging control, while the Non-GBR SDF set can only be controlled by static policy and charging; priority is used to distinguish the same The SDF set of the UE is also used to distinguish the SDF sets of different UEs, and each QCI is associated with a priority. The smaller the priority value, the higher the priority level; the packet delay budget (PDB) is used to represent the data packet. The upper limit of the time that may be delayed between the UE and the Policy and Charging Enforcement Function (PCEF); the Packet Loss Rate (PLR) is defined as the link that has been sent Layer (Link Layer Protocol (such as RLC in E-UTRAN)) but not successfully transmitted by the receiving end to the service data unit of the upper layer (such as the PDCP layer in E-UTRAN) ( Servi ce Da ta Uni t ; The ratio of SDU) (eg IP packets), therefore, the PLR parameter actually represents the upper limit of the packet loss rate in non-congested situations.

Embodiment 2

FIG. 9 is a flowchart of a signaling transmission method according to Embodiment 2 of the present invention, which includes the following steps:

Step 111: Configure a user bearer QCI as a signaling identifier for signaling to be sent.

Step 112: Obtain a service quality parameter corresponding to the corresponding relay bearer QCI according to the mapping relationship between the user bearer QCI and the relay bearer QCI of the signaling;

Step 113: Perform scheduling processing on the signaling according to the obtained quality of service parameter, and transmit the signaling as user data in the air interface. That is to say, the signaling is transmitted based on the DRB. An air interface can be transmitted, for example, at an air interface between the RN and the eNodeB.

In the technical solution of the embodiment, the method for allocating the user-bearing QCI for the signaling is used, so that when the air interface between the RN and the eNodeB is used as the user data transmission, the corresponding relay bearer QCI can be mapped, and the corresponding The quality of service parameters are scheduled. The above technical solution utilizes the prior art data to implement a reliable service quality scheduling processing scheme, and a small number of changes on the basis of the prior art can implement reliable signaling scheduling processing, which is beneficial to popularization and application under the existing protocol architecture.

In this embodiment, when starting to transmit signaling, a bearer (for example, an EPS bearer) is first established to transmit signaling, and the user is configured to carry the QCI, and the network element involved in the path is configured. The signaling may be scheduled according to the bearer QCI of the bearer and the quality of service parameter of the corresponding relay bearer QCI. When the signaling is subsequently received, the corresponding user bearer QCI is configured for the data packet including the signaling, and the data packet including the signaling is transmitted in the established bearer channel. A data packet including signaling is transmitted in the bearer channel, and each network element may be based on a bearer identifier carried by the data packet (for example, a Radio Bearer ID (hereinafter referred to as RBID), Source Tunnelling End ID (STEID), Destination Tunnel ID (DTEID), Source IP Address, Destination IP Address, etc. Knowing the other 'J bears the bearer on which the data packet is based, and then knows the user-bearing QCI corresponding to the data packet.

In the case of downlink and uplink signaling transmission, and under different relay architectures, the execution subject of each step of the method in this embodiment may change accordingly. The following is an uplink and downlink scheme implemented by the above three relay architectures. However, the embodiment is not limited to the above three relay architectures.

In the case of downlink signaling transmission, the method includes the following steps:

Step llla, when the performing network element receives the signaling or performs the self-generating signaling of the network element to be sent, the performing network element configures the user bearer QCI as the signaling identifier for signaling;

In the first and third relay architectures, the performing network element in this step may be the gateway of the RN or the solid E of the UE, and the user of the RN or the UE of the UE configures the QCI for the signaling. In the second relay architecture, the execution network element is a gateway function entity in the eNodeB of the RN, or when the function entity in the eNodeB is not strictly distinguished, the execution gateway is the eNodeB itself, and the gateway function entity in the eNodeB, Or the eNodeB configures the user to carry the QCI for signaling.

The execution network element of this step may also be a network element of the operation and maintenance of the RN (hereinafter referred to as: 0&M), or a node or network element that needs to send non-user data or signaling to the gateway of the RN.

The user-bearing QCI configured for signaling may be a preset QCI specifically configured for signaling, and the QCI may be set to "0", corresponding to a higher-level quality of service parameter. For example, the priority can be set to "0", the highest priority, the resource type is set to non-GBR, the PDB is set to less than 100 milliseconds (ms), for example 15 ms or 30 ms, and the PELR is set to 10 - ⁶ . As another example, the priority may be set to "0", the highest priority, the resource type is set to GBR, PDB set to less than 100ms, for example, 15ms or 30ms, PELR set ^10-6.

In step 112, the performing network element obtains the QoS parameter corresponding to the corresponding relay bearer QCI according to the mapping relationship between the user-carrying QCI and the relay bearer QCI of the signaling. The execution network element in this step may be The execution network element of step 111a is either an intermediate network element between the execution network element and the eNodeB of step 111a, or an eNodeB.

When the execution network element in this step is consistent with the execution of the network element in step 111a:

Specifically, the execution network element may be configured with a pre-configuration mapping table, where the mapping relationship between the user-carrying QCI and the relay bearer QCI is stored, and the quality of service parameters corresponding to each QCI are stored. User Bearers Configured for Signaling QCI and Relay Bearers QCIs may have the same or different quality of service parameters. In this embodiment, the user-bearing QCI allocated for signaling may correspond to the QoS parameter applicable to the signaling, and the mapping relationship between the QIC and the relay bearer QCI may be added in the existing pre-configured mapping table, and the corresponding application is applicable. The quality of service parameters for signaling. When the data packet including the signaling is transmitted in the established bearer, if the performing network element of this step is not the eNodeB, when the data packet is transmitted to the eNodeB, the eNodeB can carry the QCI according to the signaling user and the QCI of the relay bearer. The mapping relationship is obtained, and the service quality parameter corresponding to the corresponding relay bearer QCI is obtained.

The pre-configured mapping table of the NE can be stored in the execution NE or in other NEs for querying the NE.

Based on the foregoing explanation, the network element for the user to carry the QCI may be configured for the signaling. If the network element that the user carries the QCI in the step 11a is the eNodeB itself, the eNodeB may directly perform step 112a, if it is another network element, Then, the following steps may be further performed before performing step 112a:

In the first and third relay architectures,

The execution network element of the step 111a is the gateway of the RN, and the gateway of the RN first obtains the relay bearer quality of service parameter according to the mapping relationship between the user-carrying QCI and the relay bearer QCI, and then transmits the signaling according to the relay bearer quality of service parameter. eNodeB.

It can also be:

When the performing network element of the step 111a is the MN of the UE, the RN gateway obtains the relay bearer service quality parameter according to the mapping relationship between the user-carrying QCI and the relay bearer QCI after receiving the data packet including the signaling. Then, the signaling is transmitted to the eNodeB according to the relay bearer quality of service parameter. It can also be:

When the performing network element of the step 111a is the MN of the UE, the MN of the UE obtains the relay bearer QoS parameter according to the mapping relationship between the user bearer QCI and the relay bearer QCI, and then the letter according to the relay bearer service quality parameter. To transmit the gateway to the relay, the relayed gateway sends the data packet carrying the signaling to the eNodeB.

In the second relay architecture,

When the performing network element of the step 111a is the fixed E of the UE, the MN E of the UE obtains the relay bearer QoS parameter according to the mapping relationship between the user bearer QCI and the relay bearer QCI, and then the letter according to the relay bearer service quality parameter. The gateway function entity that transmits to the eNodeB or eNodeB.

It can also be,

When the performing network element of the step 111a is the MME of the UE, the gateway function entity in the eNodeB or the eNodeB receives the data packet including the signaling, and obtains the inheritance according to the mapping relationship between the user-carrying QCI and the relay bearer QCI. Load quality of service parameters.

When the performing network element of step 111a is an eNodeB, the eNodeB obtains a relay bearer quality of service parameter according to the mapping relationship between the user-carrying QCI and the inherited QCI.

If the execution network element of the step 111a is a gateway function entity of the eNodeB, the gateway function entity obtains the relay bearer service quality parameter according to the mapping relationship between the user-carrying QCI and the relay bearer QCI, and further needs to be based on the service quality parameter of the user carrying the QCI. The signaling is transmitted to the base station functional entity of the eNodeB.

Of course, if you do not strictly distinguish which functional entity of the eNodeB performs the above operations, then it is sufficient to directly execute the eNodeB. The embodiments of the present invention are merely illustrative of that the gateway function entity in the eNodeB may perform the foregoing operations.

In summary, the execution network element of step 111a and the network element of step 112a may be the same or different.

In any case, after the step 112a is completed, if the data packet carrying the signaling has not been transmitted to the eNodeB, then the data packet carrying the signaling is finally transmitted to the other intermediate network element. eNodeB. In the process of performing the transmission from the start of the step 11 1a to the transmission of the data packet carrying the signaling to the eNodeB, each network element (the execution network element and the intermediate network element, etc.) does not include the eNodeB, and the data including the signaling is performed according to the relay service quality parameter. The scheduling process performed by the packet is an optional step.

Step 11 3a: The eNodeB performs scheduling processing on the signaling according to the obtained quality of service parameter, and transmits the signaling to the RN based on the DRB. Transmission based on DRB means that signaling is transmitted as user data. The DRB is a concept in the LTE system, but the present invention is not limited to the LTE system or the LTE related system, such as the LTE evolved system, and therefore the scope of the present invention is applicable as long as the signaling is transmitted as general user data.

The scheduling process will be described in detail later.

In the case of uplink signaling transmission, the method includes the following steps:

Step l l l b, the RN configures the user bearer QC I as the signaling identifier for the signaling to be sent, and the signaling may be the signaling that the RN receives from the UE, or may be the signaling generated by the RN itself;

Specifically, at the Uu air interface between the UE and the RN, the UE sends a non-access stratum (Non Acces s S t ra tum; hereinafter referred to as NAS) message to the RN, and the NAS message is transparently transmitted to the E by the RN. Then, the RN sends the NAS message of the UE at the Un air interface, and in particular, the NAS message can be carried in the S1 /X2 interface signaling. At the Uu air interface, the UE sends an RRC message to the RN. After receiving the RRC message, the RN needs to exchange the corresponding information with the EPC in order to provide the service to the UE. Therefore, the RN sends the S1 /X2 interface signaling to the EPC side. The S1/X2 interface signaling is used for the S1 or X2 interface signaling generated by the UE, or is sent by the UE to trigger the S1 or X2 interface signaling generated by the RN. Therefore, the embodiment of the present invention defines the S1 or The X2 interface signaling is the S1 or X2 interface signaling of the UE. The above is similar to the relationship between the UE and the eNodeB in the LTE network (the RN seems to be equivalent to an eNodeB at this time). After receiving the information of the UE in the air interface, the eNodeB may generate the S1/X2 interface signaling and the network element on the EPC side, such as the MME, the gateway, and the target eNodeB to perform information exchange to provide services for the UE. Similarly, the EPC side sends the S 1 /X2 interface signaling to the eNodeB or the RN. For the eNodeB, the eNodeB sends corresponding information to the RN/UE according to different procedures and purposes. For the RN, the RN needs Send the corresponding information to the UE. Alternatively, the signaling may be that the RN sends the S1/X2 interface signaling to the EPC side according to its own needs. The embodiments of the present invention take the S1 interface signaling as an example, and the operation of the X2 interface signaling is similar, and the description is not repeated.

Step 112b: The RN obtains a service quality parameter corresponding to the corresponding relay bearer QCI according to the mapping relationship between the user bearer QCI and the relay bearer QCI of the signaling;

The RN is also configured with a pre-configured mapping table, where the mapping relationship between the user-carrying QCI and the relay bearer QCI is stored, and the QoS parameter corresponding to the QSI of the relay bearer is stored, and the RN may locally store the QoS parameters corresponding to each QCI, or The quality of service parameters corresponding to the QCI can be obtained from other network element queries.

Step 113b: The RN performs scheduling processing on the signaling according to the obtained quality of service parameter, and transmits the signaling to the eNodeB based on the DRB.

The scheduling processing based on the QoS parameters may be corresponding processing and scheduling operations of each layer structure of the protocol stack, and the scheduling processing will be described in detail later.

Embodiment 3

FIG. 10 is a flowchart of a signaling transmission method according to Embodiment 3 of the present invention, which includes the following steps:

Step 121: Configure a relay bearer QCI as a signaling identifier for signaling to be sent;

Step 122: Perform scheduling processing on the signaling according to the QoS parameter corresponding to the relay bearer QCI of the signaling, and transmit the signaling as the user data in the air interface. For example, the air interface between the RN and the eNodeB may be transmitted based on the DRB.

With the technical solution of the embodiment, the QCI is directly coupled to the signaling bearer, which can simplify the mapping step, and can still utilize the correspondence between the existing QCI and the quality of service parameters, and is easy to promote and apply under the existing protocol architecture.

In this embodiment, when starting to transmit signaling, first, a corresponding bearer is set up to transmit signaling, and a relay bearer QCI is configured for the bearer, and the network element involved in the bearer path may be based on the bearer of the bearer QCI. And the corresponding service quality parameter performs scheduling processing on the signaling. Will be ready for The sent signaling configures the corresponding relay bearer QCI to be transmitted in the established bearer channel. The signaling packet transmitted in the bearer channel is encapsulated and transmitted in a data packet, and each network element can identify the bearer on which the data packet is based according to the bearer identifier carried in the data packet, and then can obtain the corresponding data packet. Inheriting QCI and quality of service parameters.

Step 121a: When the performing network element receives the signaling or generates the self-generated signaling to be sent, the performing network element configures the relay bearer QCI as the signaling identifier for the signaling to be sent;

In the first and third types of relay architectures, the performing network element in this step is the gateway of the RN or the E-E of the UE, and the relaying bearer QCI is configured by the gateway of the RN or the E of the UE. In the second relay architecture, the execution network element is a gateway function entity in the eNodeB of the RN, and the gateway function entity of the eNodeB configures the relay bearer QCI for signaling. If the execution network element is an eNodeB itself that is not strictly distinguished by the functional entity, then the eNodeB configures the relay bearer QCI for signaling.

The execution network element of this step may also be an O&M network element of the RN, or a node or network element that needs to send non-user data or signaling to the gateway of the RN.

The relay bearer QCI configured for signaling may be a preset QCI specifically configured for signaling, and the QCI may be set to "0", corresponding to a higher level of quality of service parameters, for example, the priority may be set to " 0 ", the highest priority, the resource type is set to non-GBR, PDB set to less than 100ms, for example, 15ms or 30ms, PELR set ^10-6. Alternatively, QCI can also be set to "0", corresponding to a higher level of quality of service parameters, for example, the priority is set to "0", the highest priority, the resource type is set to GBR, and the PDB is set to less than 100ms, for example, 15ms or 30ms, PELR set ^10-6.

Step 122: The eNodeB performs scheduling processing on the signaling according to the QoS parameter corresponding to the relayed bearer QCI of the signaling, and transmits the signaling to the RN based on the DRB. A pre-configured mapping table may be configured in the execution network element of the step 121a, where the QoS parameter corresponding to the relay bearer QCI is stored, and the performing network element obtains the service quality corresponding to the relay bearer QCI according to the relayed bearer QCI of the signaling. The parameter is executed, and the network element performs scheduling processing on the signaling according to the obtained quality of service parameter. If the execution network element of the relay bearer QCI is not an eNodeB, when the signaling is transmitted to the eNodeB, the eNodeB may perform scheduling processing on the signaling according to the quality of service parameter, and transmit the signaling to the RN based on the DRB. When the data packet containing the signaling is transmitted in the established bearer, the eNodeB can obtain the bearer identifier from the data packet, and then the relay bearer QCI corresponding to the bearer can be obtained.

Based on the foregoing explanation, the network element for configuring the relay bearer QCI for signaling may be multiple. If the network element that configures the relay bearer QCI in step 121a is the eNodeB itself, the eNodeB may directly perform step 122a, if it is another network element. Then, the following steps may be further performed before performing step 122a:

In the first and third relay architectures, the performing network element of step 121a is the gateway of the RN, and the gateway of the RN transmits the data packet including the signaling to the eNodeB according to the quality of service parameter corresponding to the relay bearer QCI. .

In the second relay architecture, if the execution network element of step 121a is the gateway function entity of the eNodeB instead of the eNodeB itself, the gateway function entity also needs to include signaling according to the quality of service parameter corresponding to the relay bearer QCI. The data packet is transmitted to the base station functional entity of the eNodeB.

If the performing network element of step 121a is an entity other than the eNodeB, such as the MME of the UE, the O&M network element of the RN, or the node or the network element to be sent to the RN's gateway for non-user data or signaling, then the execution network is needed. The element transmits the data packet including the signaling to the eNodeB according to the quality of service parameter corresponding to the relay bearer QCI. For example, the MME of the UE obtains the quality of service parameter according to the relay bearer QCI, and then transmits the signaling to the eNodeB according to the quality of service parameter.

For the first or third relay architecture, when the data packet including the signaling is transmitted to the eNodeB, the eNodeB identifies the data packet by using the specific relay to carry the QCI or the quality of service parameter corresponding to the bearer QCI. After the data packet is carried, the eNodeB is based on the specific The service quality parameter corresponding to the QCI is inherited to perform scheduling processing on the data packet, and the data packet is transmitted to the RN based on the DRB in the Un air interface.

For the second relay architecture, the eNodeB performs scheduling processing on the data packet according to the configured service quality parameter of the relay bearer QCI, and transmits the data packet to the RN based on the DRB in the Un air interface.

In the step 121b, the RN configures the relay bearer QCI as the signaling identifier for the signaling to be sent. The signaling may be the signaling that the RN receives from the UE, or may be the signaling generated by the RN itself. For specific signaling, refer to the implementation. Example 2;

Step 122b: The RN obtains a QoS parameter corresponding to the relay bearer QCI according to the relay bearer QCI of the signaling, and the RN may also be configured with a pre-configured mapping table, where the QoS parameter corresponding to the relay bearer QCI is stored, or the RN The quality of service parameters can be obtained by querying from other network elements that have a pre-configured mapping table. The RN performs scheduling processing on the signaling according to the obtained quality of service parameters, and transmits the signaling to the eNodeB based on the DRB.

The technical solution of this embodiment is to directly bind a relay bearer QCI for signaling, and simplify the mapping step.

Embodiment 4

FIG. 11 is a flowchart of a signaling transmission method according to Embodiment 4 of the present invention, which includes the following steps:

Step 131: Specify an identifier for the signaling to be sent, and set the specified identifier in the header of the data packet containing the signaling as the signaling identifier. For example, if the IP packet carrying the signaling is an IP packet, the specified identifier may be set in a header (IP header) of the IP packet including the signaling as a signaling identifier;

Step 132: Perform scheduling processing on the data packet according to the specified identifier, and the data including the signaling is included. The packet is transmitted as user data in the air interface, for example, the air interface between the RN and the eNodeB is transmitted based on the DRB. The scheduling process is a special processing method for signaling settings. For example, the signaling packet may be scheduled by using a default priority. Preferably, the highest priority is used to schedule the processing signaling packet.

With this technical solution, a packet containing signaling (such as an IP packet) can be differentiated from an IP packet containing user data for default, corresponding signaling scheduling processing.

Step 1 31a: When the performing network element receives the signaling or generates the self-generated signaling to be sent, the executing network element specifies a identifier for the signaling configuration to be sent, and sets the specified identifier in the packet header of the data packet including the signaling. As a signaling identifier;

There may be multiple execution gateways in this step, such as the RN's gateway, the RN's O&M, the UE's E, eNodeB or other gateways, but the packets are transmitted to the eNodeB. The data packet will eventually arrive at the eNodeB, whereby the eNodeB that receives the data packet can know that the data packet contains signaling according to the specified identifier, and specifically performs scheduling processing on the data packet, and sends the data packet carrying the signaling to the RN. Transfer.

Therefore, in the transmission process from the execution network element to the eNodeB in this step, there may be an intermediate network element, and the intermediate network element may also specify the identifier through the special header, and it can be known that the data packet includes signaling, which may be specifically This packet is scheduled for processing. Of course, the intermediate network element may also perform scheduling processing on the data packet without special.

In the first and third relay architectures, the performing network element in this step is the gateway of the RN, and the gateway of the RN configures the identifier for the signaling configuration, so that the eNodeB acquires the data packet containing the signaling. It can be known that the data packet contains signaling by identifying the header of the data packet. Thus, the eNodeB can specifically schedule the data packet. In the second relay architecture, the execution network element of this step may be a gateway function entity of the eNodeB, and the gateway function entity of the eNodeB specifies an identifier for the signaling configuration, so that the eNodeB can identify the data packet when acquiring the data packet. It is known in the header that the data packet contains signaling, so that the data packet can be specially scheduled and scheduled. Since the gateway function is integrated in the eNodeB, if there is no special way to distinguish which functional entity of the eNodeB to execute, the eNodeB is the execution network element, and it is not necessary to distinguish which functional entity of the eNodeB performs.

The execution network element in this step may also be the MME of the UE, and the MME of the UE configures the identifier for the signaling, so that the gateway of the lower-level network element eNodeB or the RN can identify the header of the data packet when acquiring the data packet. It is known that the data packet contains signaling.

In summary, if the execution network element is a non-eNodeB entity, such as a solid E of the UE, an O-M network element of the RN, or a node or network element to send non-user data or signaling to the RN's gateway, then the network element needs to be executed. Specifying an identifier for the signaling configuration to be sent, and setting the specified identifier in the header of the data packet containing the signaling as a signaling identifier; when the data packet containing the signaling is finally transmitted to the eNode, the eNodeB can learn the The data packet contains signaling, and the data packet is specially scheduled, and the data packet carrying the signaling is transmitted to the RN.

When the data packet is finally transmitted to the eNodeB, the eNodeB can specifically set and process the data packet, and transmit the data packet between the RN and the eNodeB. Or the eNodeB parses the signaling in the data packet, and the corresponding eNodeB generates corresponding signaling, which is carried in a data packet, and specifically sets and schedules the data packet, and transmits the data packet between the RN and the eNodeB. .

In the foregoing various technical solutions of the present embodiment, the execution network element of the specified identifier, for example, the eNodeB, may itself know that the signaling is carried in the data packet, so the execution network element itself may specifically perform the data packet. Special scheduling processing. This special scheduling process can be prioritized configuration and scheduling at each layer.

Step 1 32a. In the foregoing various implementations, the eNodeB may perform scheduling processing on the data packet carrying the signaling according to the specified identifier, and transmit the data packet carrying the signaling to the RN. The intermediate network element between the execution network element and the eNodeB may perform data including signaling according to the specified identifier. The packet is processed by a special scheduling process, and the data packet including the signaling is not used according to the specified identifier, and the intermediate network element sends the data packet including the signaling to the eNodeB.

For example, a packet is processed according to a specified identifier. The scheduling process may be scheduling with the highest priority.

Step 1 31b: The RN configures an identifier for the signaling configuration to be sent, and sets the specified identifier in a header of the data packet including the signaling as a signaling identifier, where the signaling may be the signaling that the RN receives from the UE. It can also be the signaling generated by the RN itself;

For example, the specified identity can be set in the header of the IP packet containing the signaling as a signaling identifier.

Step 1 32b: The RN performs scheduling processing on the data packet according to the specified identifier, and transmits the data packet including the signaling to the eNodeB based on the DRB.

The execution network element in this step is the RN, and the RN itself knows that the signaling is carried in the data packet, so the RN itself can perform special scheduling processing on the data packet. This special scheduling process can be prioritized and scheduled at each layer, refer to the previous description. Therefore, the RN may not specifically identify the IP address.

In the foregoing embodiment, the foregoing uplink signaling sending situation may further include the following steps: Step 1b: The eNodeB receives the data packet including the signaling, and performs scheduling processing on the data packet including the signaling according to the specified identifier. Transfer to the core network, for example, scheduling with the highest priority.

In particular, the designated identification of the packet header may further indicate that the signal carried by the packet is for air interface signaling rather than for data transmission.

The so-called air interface signaling transmission is specifically a bandwidth request message type signal generated for transmitting signaling, and is called bandwidth request message type signaling which is specifically generated for data transmission.

The step of specifying an identifier for the signaling configuration to be sent in this embodiment includes:

Identify the signaling to be sent; When it is recognized that the signaling is the bandwidth request message type signaling generated for transmitting the signaling, the first identifier is configured as the designated identifier, and when the signaling is the bandwidth request message type signaling generated for transmitting the data, The second identifier is configured as the specified identifier, and the first identifier and the second identifier are set in a packet header of the data packet.

The first identifier and the second identifier are used to indicate scheduling processing of different priorities. The network element that receives the data packet can not only recognize that the data packet carries signaling, but also recognize that the scheduling process should be performed according to different priorities.

For example, after receiving the data packet from the RN, the eNodeB can learn that the data packet includes signaling by identifying the packet header of the data packet, and recognize that the signaling is a signal sent to request to obtain the radio resource that the RN sends signaling. Therefore, the eNodeB can preferentially allocate the radio resource for signaling to the RN.

The above uplink and downlink are not necessarily performed in pairs. For example, the downlink may be performed only without performing uplink, or only the uplink may be performed without performing downlink.

With the technical solution of the embodiment, the network element that subsequently processes the data packet can be identified according to the specified identifier of the data packet, so that reasonable scheduling processing can be performed. Especially in the downlink transmission of the first and second relay architectures, in fact, the RN's gateway also transmits signaling as data on the user plane. The RN's gateway identifies the signaling to be sent, identifies the data packet containing the signaling, and then transmits it as data to the eNodeB. The eNodeB can identify the data packet encapsulated with signaling according to the specified identifier, if there is no data packet header. Specifying the identity, the eNodeB will not be able to recognize that the packet is encapsulated with signaling.

In this embodiment, only the specified identifier may be used to identify the signaling, and it is not necessary to set the QCI. The eNodeB or RN schedules packets containing signaling in preference to other packets containing data.

Embodiment 5

FIG. 12 is a flowchart of a signaling transmission method according to Embodiment 5 of the present invention, which includes the following steps:

Step 141: Configure a user-carrying QCI or a relay bearer QCI for the signaling to be sent, and also The signaling configuration specifies an identifier, and the specified identifier is set in a header of the data packet including the signaling; Step 142, according to the relay bearer QC I corresponding to the user bearer QC I or the configured relay bearer QC I The quality of service parameters corresponding to the QCI;

Step 143: Perform scheduling processing on the data packet according to the specified identifier of the data packet header and the obtained quality of service parameter, and transmit the signaling as the user data in the air interface, for example, the air interface between the RN and the eNodeB is transmitted based on the DRB.

Step 141a: When the performing network element receives the signaling of the UE or performs the self-generating signaling of the network element to be sent, the performing network element configures the user-bearing QCI or the relay bearer QCI for the signaling to be sent, and is also the signaling. The specified identifier is set, and the specified identifier is set in the packet header including the signaling. In the first and third relay architectures, the execution network element in this step may be the gateway of the RN or the UE E of the UE. The user bearer QCI or the relay bearer QCI is configured by the gateway of the RN or the UE of the UE, and the designated identifier is configured. In the second relay architecture, the execution network element is a gateway function entity of the eNodeB, and the gateway function entity of the eNodeB configures the user to carry the QCI or the relay bearer QCI for the signaling, and configures the designated identifier.

Step 142a: The performing network element obtains a quality of service parameter corresponding to the relay bearer QCI according to the relay bearer QCI corresponding to the QCI or the directly configured relay bearer QCI of the user bearer QCI;

The execution network element of this step is the same as the execution network element of step 141a, and may be similar to the second embodiment and the third embodiment, and adopts a pre-configured mapping table to obtain the service quality corresponding to the relay bearer QCI according to the user-carrying QCI or the relay bearer QCI. parameter. In the first and third relay architectures, before the step 142a, the gateway of the RN may further obtain the QoS parameter according to the relay bearer QCI, and then transmit the signaling to the eNodeB according to the QoS parameter.

Step 143a, the eNodeB according to the specified identifier of the data packet header and the obtained quality of service parameter pair The data packet is scheduled to be processed, and the data packet containing the signaling is transmitted between the RN and the eNodeB based on the DRB.

Step 141b: The RN configures a user bearer QCI or a relay bearer QCI for the signaling to be sent, and also specifies an identifier for the signaling configuration, and sets the specified identifier to the packet header of the data packet including the signaling; Step 142b, RN Obtaining a service quality parameter corresponding to the relay bearer QCI according to the relay bearer QCI corresponding to the user bearer QCI or the relay bearer QCI directly configured by the signaling;

Similar to the second embodiment and the third embodiment, the pre-configuration mapping table is used to obtain the QoS parameter corresponding to the relay bearer QCI according to the user-carrying QCI or the relay bearer QCI.

Step 143b: The RN performs scheduling processing on the data packet according to the specified identifier of the packet header of the data packet and the obtained quality of service parameter, and transmits the data packet including the signaling to the eNodeB based on the DRB.

In the technical solution of the embodiment, when the signaling is transmitted between the eNodeB and the RN, the eNodeB or the RN performs scheduling on the data packet by using the specified identifier and the QoS parameter. The preferred combination scheduling policy may be: All packets carrying QCI are inherited, and these packets have the same quality of service parameters, in which the packet header of the processing packet can be preferentially scheduled to have the specified identifier.

The signaling transmission method provided by the foregoing embodiments of the present invention provides a reliable transmission mechanism to support signaling using DRB for transmission. Standardizes the S1-AP/SCTP/IP packet carrying the signaling or the DR2-based transmission mechanism of the X2-AP/SCTP/IP packet in the Un air interface, providing S1-AP/SCTP/IP or X2-AP/SCTP/IP A reliable and efficient transmission service.

In the foregoing embodiments, the corresponding scheduling processing according to the QoS parameter or according to the specified tempo may be an operation such as preferential configuration and scheduling at each layer. The preferred implementation is as follows:

The QCI is a quantity level used to indicate access point parameters for controlling packet transmission processing at the bearer level, such as scheduling weights, access thresholds, queue management thresholds, and link layer protocol configurations. Scheduling the packets containing the signaling includes layer-specific configuration and scheduling, for example:

1. PDCP layer integrity protection Specifically, the PDCP layer is added to perform integrity protection on the data packet, that is, the DRB. Or increase the Internet Security Protocol (IPsec) protocol mechanism.

Or, setting the PDCP layer to the data packet containing the signaling, that is, performing integrity protection processing on the DRB;

Or, setting the PDCP layer to the data packet containing the signaling, that is, encrypting and integrity protection processing for the DRB;

Or, setting the PDCP layer to the data packet containing the signaling, that is, performing header compression, encryption, and integrity protection processing on the DRB;

Or, for the data packet including the signaling, that is, the IPB is used for the integrity protection processing of the DRB, and the data packet is processed by the PDCP layer, that is, the header compression and encryption processing is performed for the DRB.

2. The RLC layer is configured to configure an automatic retransmission request (hereinafter referred to as ARQ) and/or a hybrid automatic repeat request (Hybrid-ARQ; HARQ) for the data packet containing the signaling. Function to guarantee reliable transmission of the packet, ie DRB.

3. Priority scheduling of the MAC

For example, a packet containing signaling will be used, ie the DRB will be configured with a logical channel at the MAC layer, in particular, the logical channel priority will be configured with the highest priority, and/or the priority bit rate.

( Pr ior i t i sed Bi t Ra te ) is configured as infinity (Inf in ty ).

The above layers can be independently implemented or combined.

Embodiment 6

The sixth embodiment of the present invention provides another signaling transmission method, where the method includes the following steps: identifying signaling to be sent, and processing the signaling by using an RRC layer, so that the signaling of the UE is based on the RN and the eNodeB. A type of SRB transmits, and the signaling of the RN is transmitted between the RN and the eNodeB based on the second type of SRB.

In this embodiment, the network element to which the signaling belongs is first identified, for example, at least whether the signaling is served for the UE or the RN, thereby determining the SRB of the signaling. In a specific application, the signaling may also belong to other network elements, and other types of SRBs may be further used to differentially transmit different network elements. Signaling.

Specifically, the first type of SRB is used to carry the signaling of the UE, and may be the signaling sent by the UE, or the signaling generated by the RN and serving the UE. The signaling of the UE may include the NAS message and the S1 interface. The command and/or X2 interface signaling may even include an RRC layer message. The NAS message of the UE may be, for example, a NAS message of the UE on the Uu air interface, and the second type of SRB is used to carry the signaling of the RN, and may include an RRC layer message and a NAS message of the RN. For the sake of clarity and distinction, the RRC message of the RN is recorded as RRC1, the NAS message of the RN is recorded as NASI, the RRC message of the UE is recorded as RRC2, the NAS message of the UE is recorded as NAS2, and the S1 interface signaling and the X2 interface signaling of the UE are respectively Recorded as S1 and X2. For the definition of the S1 interface signaling and the X2 interface signaling of the UE, refer to the second embodiment. In other words, the S1 interface signaling and the X2 interface signaling of the UE herein refer to S1 interface signaling and X2 interface signaling transmitted on the Un air interface.

The technical solution of the present embodiment is first improved for the foregoing three types of relay architectures, and the RRC layer is added to the Un air interface control plane between the RN and the eNodeB, and the control plane based on the sixth embodiment of the present invention is shown in FIG. Schematic diagram of the protocol architecture, the signaling is processed by the RRC layer, and transmitted based on the SRB. However, when the SRBs are processed by the RRC layer, the same priority is used for the scheduling of the signaling carried in the same type of SRB. The technical solution of the present embodiment can carry the signaling of the UE and the signaling of the RN to different SRBs for transmission, so that the signaling of the different SRBs can be treated differently when the layers below the RRC layer process the signaling. By configuring different priorities for different SRBs, the signaling of the UE may be preferentially processed or the signaling of the RN may be preferentially processed according to actual needs.

When the RN is equivalent to a UE accessing the eNodeB, the Un air interface between the RN and the eNodeB is actually equivalent to the Uu air interface, and the protocol on the Uu air interface control plane can be similarly applied. From the perspective of compatibility with existing protocol architectures and minimizing changes to existing protocols: Existing SRBs can only be used to carry RRC messages and NAS messages, and can be divided into three SRBs, namely SRB0, SRB1 and SRB2. . The SRBO uses the Common Control Channel (hereinafter referred to as CCCH) logical channel to transmit the RRC message; the SRB1 uses the Dedicated Control Channel (hereinafter referred to as DCCH) logical channel to transmit the RRC message and the priority is higher than the NAS message in the SRB2. NAS message, the RRC message may include a piggybacked NAS message, a message processed at the RRC layer The order should be carried in SRB1; SRB2 uses the DCCH logical channel to transmit NAS messages with a lower priority than SRB1.

On the basis of the foregoing protocols, the technical solutions of this embodiment may have multiple implementation forms, which are separately described below.

Example 7

This embodiment can implement the differentiated scheduling priority by adding the SRB based on the sixth embodiment. In this embodiment, the signaling of the RN is set to include RRC1 and NASI, RRC1 and NASI are carried by SRB1, NASI, SRB1 and SRB2 are carried by SRB2 as the second type of SRB. The signaling of the UE includes RRC2, NAS2, SI, and X2, and the newly added SRB carries the signaling of the UE.

The first scheme is to add a SRB3, and use the DCCH logical channel to transmit RRC2, NAS2, SI, and X2 of the UE, and then SRB3 is used as the first type of SRB.

Preferably, the priority can be set from high to low as SRB1>SRB2>SRB3, or SRB1>SRB3>SRB2, or the priority can be set from low to high in the above order.

The second scheme is to add two first-class SRBs, namely SRB3 and SRB4, and both SRB3 and SRB4 transmit using DCCH logical channel, respectively carrying RRC2, NAS2, SI and X2 of the UE. According to different permutations and combinations, there may be multiple bearer modes. For example, SRB3 carries RRC2 and NAS2, SRB4 carries S1 and X2; or SRB3 carries RRC2, SRB4 carries NAS2, SI and X2; or SRB3 carries NAS2, SRB4 carries RRC2, SI and X2.

The priority can be set from SDB1>SRB2>SRB3>SRB4; or SRB1>SRB2>SRB4>SRB3; or SRB1>SRB2>SRB4=SRB3; or SRB1>SRB3>SRB2>SRB4; or SRB1>SRB3> SRB2 = SRB4; SRB1>SRB4>SRB2 = SRB3.

The third scheme is to add three first-class SRBs, namely SRB3, SRB4, and SRB5, which respectively carry RRC2, NAS2, SI, and X2 of the UE. According to different arrangements, there may be multiple bearer modes. For example, SRB3 carries RRC2, SRB4 carries S1 and X2, and SRB5 carries NAS2.

The priority can be set such that the second type of SRB is higher than the first type of SRB, and within the first type of SRB, you can set: SRB3>SRB4>SRB5, or SRB3>SRB5>SRB4, or SRB4>SRB3>SRB5 Wait. The priority may also set the priority of the partial signaling of the RN to be higher than the signaling of the UE. For example, SRB1>SRB3>SRB4>SRB2>SRB5 ₀ may be set.

The fourth scheme is to add four first-class SRBs, namely SRB3, SRB4, SRB5, and SRB6, which respectively carry RRC2, NAS2, SI, and X2 of the UE. According to different permutations and combinations, there may be multiple bearer modes. For example, SRB3 carries RRC2, SRB4 7? carries SI, SRB5 carries X2, and SRB6 carries NAS2.

The priority setting may be: setting the priority of the second type of SRB to be higher than the first type of SRB, and setting the priority within the first type of SRB to be SRB3>SRB4>SRB5>SRB6, or set to SRB3 >SRB4 = SRB5>SRB6, or set to SRB3>SRB6>SRB5=SRB4. The priority can also be set as follows: The priority of the second type of SRB is higher than that of the first type of SRB. For example, SRB1>SRB3>SRB4=SRB5>SRB2>SRB6 can be set.

Example eight

This embodiment can be based on the sixth embodiment. In this embodiment, the signaling of the RN is set to include RRC1 and NASI, and RB1 is carried by SRB1, and NASI, SRB1 and SRB2 are carried by SRB2 as the second type of SRB. The signaling of the UE includes Sl, X2, and NAS2, and the newly added SRB carries the signaling of the UE.

The first scheme is to add a new SRB3, and use the DCCH logical channel to transmit NAS2, SI, and X2 of the UE, and then SRB3 is used as the first type of SRB.

The second solution is to add two first-class SRBs, SRB3 and SRB4, which carry NAS, SI, and X2 of the UE. According to different arrangements, there may be multiple bearer modes. For example, SRB3 carries S1 and X2, SRB4 carries NAS2; or SRB3 carries NAS2 and SI, SRB4 carries X2; or SRB3 carries NAS2 and X2, and SRB4 7 carries S1.

The priority can be set from high to low, SRB1>SRB2>SRB3>SRB4; or SRB1>SRB3>SRB2>SRB4; or SRB1>SRB3>SRB2 = SRB4.

The third scheme is to add three first-class SRBs, namely SRB3, SRB4, and SRB5, which respectively carry the S1, X2, and NAS2 of the UE. The priority may be set such that the second type of SRB is higher than the first type of SRB, and within the first type of SRB, the priority may or may not be set. If priority is set, it is preferable to set SRB1 > SRB2 >SRB3; or you can set SRB1 > SRB2 > SRB3 = SRB4 > SRB5. The priority may also set the priority of the partial signaling of the RN to be higher than the signaling of the UE. For example, SRB1 > SRB3 = SRB4 > SRB2 > SRB5 may be set, or SRB1 > SRB3 = SRB4 > SRB2 = SRB5 may be set.

The foregoing embodiments 6 to 8 of the present invention provide several preferred embodiments for carrying UE and RN signaling by using different SRBs, but the specific application is not limited to the corresponding relationship between the SRB and the signaling, and is not limited to the above priority. The setting relationship between the RN and the UE may be implemented in different SRB bearers. It is preferable to further implement different signaling of the UE to implement priority differentiation by using different SRB bearers. That is, the RRC message, the NAS message, the S1 interface signaling, and the X2 interface signaling of the UE are transmitted between the eNodeB and the RN based on two, three, or four first-class SRBs, and each of the first signaling carries different signaling. Class SRBs can have the same or different priorities.

On the basis of the foregoing technical solutions, the PDCP layer may be configured to perform encryption and integrity protection processing on the SRB3, or the PDCP layer may perform header compression, encryption, and integrity protection processing on the SRB3. Or, set IPsec to perform integrity protection processing on S1-AP/SCTP/IP packets and X2-AP/SCTP/IP packets, and the PDCP layer performs header compression and encryption processing on SRB3.

Since the signaling of the UE and the signaling of the RN are both processed by the RRC layer, the technical solution of the embodiment is solved according to the existing protocol, and the signaling of the UE and the signaling of the RN are on different SRBs. The transmission is performed so that the data packets carried in different SRBs can be differentiated in the subsequent processing, and the transmission mechanism of the S1-AP/SCTP/IP packet and the X2-AP/SCTP/IP packet on the Un air interface is standardized, which is S1-AP. The /SCTP/IP packet and X2-AP/SCTP/IP include appropriate scheduling to provide reliable, low latency transmission services.

Example nine

FIG. 14 is a schematic structural diagram of a signaling transmission apparatus according to Embodiment 9 of the present invention, where the signaling is performed The transmission device includes: a configuration module 10 and a transmission module 20. The configuration module 10 is configured to configure signaling identifiers for signaling to be sent; the transmission module 20 is configured to perform scheduling processing on the signaling according to the signaling identifier, and transmit the signaling in the air interface as user data. For example, in an LTE-A network, the air interface between the RN and the eNodeB may be transmitted based on the DRB.

This embodiment can implement a signaling transmission method provided by an embodiment of the present invention, which can provide effective and reliable transmission for signaling.

Example ten

FIG. 15 is a schematic structural diagram of a signaling transmission apparatus according to Embodiment 10 of the present invention. The embodiment is based on the ninth embodiment. The signaling identifier configured by the configuration module 10 is a user carrying QCI, and the transmission module 20 is specific. The first mapping acquisition unit 21, the first scheduling processing unit 22, and the first transmission unit 23 are included. The first mapping acquiring unit 21 is configured to obtain a QoS parameter corresponding to the corresponding relay bearer QCI according to the mapping relationship between the user-substitute QCI and the relay bearer QCI of the signaling; the first scheduling processing unit 22 is configured to use the obtained service according to the obtained service. The quality parameter performs scheduling processing on the signaling; the first transmission unit 23 is configured to transmit the signaling as the user data in the air interface, for example, the air interface between the RN and the base station is transmitted based on the DRB.

In this embodiment, the technical solution of the second embodiment of the present invention may be specifically implemented, and the mode for allocating the user to carry the QCI for signaling, so that the signaling can be mapped to the corresponding relay bearer QCI when the data is transmitted between the RN and the base station. Then, the corresponding quality of service parameters are obtained for scheduling processing. The above technical solution utilizes the prior art data to implement a reliable service quality scheduling processing scheme, and a small number of changes on the cornerstone of the original technology can realize reliable scheduling processing of signaling, which is beneficial to popularization and application under the existing protocol architecture.

Embodiment 11

FIG. 16 is a schematic structural diagram of a signaling transmission apparatus according to Embodiment 11 of the present invention. The embodiment is based on the ninth embodiment, wherein the signaling identifier configured by the configuration module 10 is a relay bearer QCI, and the transmission module 20 Specifically, it includes: a second scheduling processing unit 24 and a second transmission unit 25. The second scheduling processing unit 24 is configured to: according to the quality of service parameter corresponding to the relaying QCI of the signaling, For the scheduling process, the second transmission unit 25 is configured to transmit the air interface between the RN and the base station based on the DRB as user data.

The embodiment may specifically implement the technical solution of the third embodiment of the present invention, directly binding a relay bearer QCI for signaling, and simplifying the mapping step.

Example twelve

FIG. 17 is a schematic structural diagram of a signaling transmission apparatus according to Embodiment 12 of the present invention. In this embodiment, based on Embodiment 9, the signaling identifier configured by the configuration module 10 is a designated identifier, and the designated identifier is set to include a letter. The header of the data packet, the transmission module 20 includes: a third scheduling processing unit 26 and a third transmission unit 27. The third scheduling processing unit 26 is configured to perform scheduling scheduling processing on the data packet according to the specified identifier. The third transmitting unit 27 is configured to use the DRB as the user data for the air interface between the RN and the base station. Transfer. It is known to identify signaling without having to set up QCI. The base station or RN schedules the data packets containing the signaling in preference to other data packets.

On the basis of the present embodiment, the configuration module 10 may include: an identification unit 11, a configuration unit 12, and a setting unit 13. The identifying unit 11 is configured to identify the signaling to be sent. The configuration unit 12 is configured to configure the first identifier as the designated identifier when identifying that the signaling is the bandwidth request message type signaling generated by the signaling. When the signaling is the bandwidth request message type signaling generated for transmitting the data, the second identifier is configured as a specified identifier, and the first identifier and the second identifier are used to indicate scheduling processing of different priorities; the setting unit 13 is configured to specify The identity is set in the header of the packet containing the signaling.

Example thirteen

FIG. 18 is a schematic structural diagram of a signaling transmission apparatus according to Embodiment 13 of the present invention. The present embodiment is based on Embodiment 9 and the signaling identifier of the configuration module 10 is a user-carrying QCI or a relay bearer QCI. The identifier further includes a specified identifier, and the specified identifier is set in a header of the data packet including the signaling, and the transmission module 20 includes: a fourth mapping obtaining unit 28, a fourth scheduling processing unit 29, and a fourth transmission unit 210, where the fourth mapping acquiring unit 28 is configured to obtain a QoS parameter corresponding to the relay bearer QCI according to the relay bearer QCI corresponding to the user bearer QCI or the configured relay bearer QCI; the fourth scheduling processing unit 29 is configured to perform scheduling processing on the data packet according to the specified identifier of the data packet header and the obtained quality of service parameter. The fourth transmission unit 210 is configured to use the DRB as a user interface between the RN and the base station. Data is transmitted. When transmitting signaling, the base station or the RN may schedule the data packet in combination with the specified identifier and the quality of service parameter. The preferred combination scheduling policy may be: For all data packets having the same relay bearer QC I, the data packets have The same quality of service parameters, in which the packet header of the processing packet can be preferentially scheduled to have the specified identifier.

Embodiment 14

FIG. 19 is a schematic structural diagram of another signaling transmission apparatus according to Embodiment 14 of the present invention. The signaling transmission apparatus includes: an identification module 30, a UE signaling processing module 40, and an RN signaling processing module 50. The identification module 30 is configured to identify the signaling to be sent. The UE signaling processing module 40 is configured to process the signaling by using the RRC layer when the identification module 30 identifies that the signaling is the signaling of the UE, thereby The signaling is performed between the RN and the base station based on the first type of SRB; the RN signaling processing module 50 is configured to process the signaling by using the RRC layer when the identification module 30 identifies the signaling that is the RN signaling. Therefore, the signaling of the RN is transmitted based on the air interface between the RN and the base station based on the second type of SRB.

On the basis of the present embodiment, the UE signaling processing module 40 may specifically include: a UE signaling identification unit 41 and a UE signaling transmission unit 42. The UE signaling identification unit 41 is configured to: when the identification module 30 identifies that the signaling is the signaling of the UE, identify an RRC message, a NAS message, an S1 interface signaling, or an X2 interface signaling that distinguishes the signaling from the UE. The UE signaling transmission unit 42 is configured to transmit, according to the RRC message, the NAS message, the S1 interface signaling, and the X2 interface signaling of the UE, between the RN and the base station, based on two, three or four first-class SRBs. Each first type of SRBs of different signaling has the same or different priorities, and all or part of the second type of SRBs have higher priority than all or part of the first type of SRBs. In this embodiment, the technical solutions of the sixth to eighth embodiments of the present invention may be specifically implemented, and different signaling modes of the SRB are used to distinguish the signaling of the UE and the signaling of the RN, so that the signaling of the UE and the signaling of the RN can be different. The priority is scheduled to ensure that the signaling can be reliably and efficiently transmitted based on the SRB.

The embodiment of the invention may further provide a signaling transmission system, including a configuration module and a transmission module. The configuration module is configured to configure signaling identifiers for signaling to be sent; the transmission module is configured to perform scheduling processing on the signaling according to the signaling identifier, and transmit the signaling in the air interface as user data. For example, the air interface between the eNodeBs of the RN is transmitted based on the DRB. The configuration module and the transmission module can be configured in the same network element or multiple network elements, for example:

The configuration module and the transmission module can be configured in the RN at the same time;

Alternatively, in the first and third relay architectures, the configuration module may be configured in the gateway of the RN or the UE in the UE, and the transmission module may be configured in the eNodeB;

Or, in the second relay architecture, the configuration module and the transmission module can be configured in the eNodeB at the same time;

Alternatively, the configuration module can be configured on the 0&M network element of the RN or a node or network element that needs to send non-user data or signaling to the RN's gateway, and the transmission module can be configured in the eNodeB.

The configuration module and the transmission module may be configured in multiple network elements involved in the EPS bearer, and cooperate with each other to perform the signaling transmission method provided by the present invention.

A person skilled in the art can understand that all or part of the steps of implementing the above method embodiments may be completed by using hardware related to program instructions, and the foregoing program may be stored in a computer readable storage medium, and the program is executed when executed. The steps of the foregoing method embodiments are included; and the foregoing storage medium includes: a medium that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.

It should be noted that the above embodiments are only for explaining the technical solutions of the present invention, and are not intended to be limiting; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that: The technical solutions described in the foregoing embodiments are modified, or some of the technical features are equivalently replaced. The modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

Claim

A signaling transmission method, comprising:

2. The signaling transmission method according to claim 1, wherein: transmitting the signaling in the air interface as user data comprises:

The signaling is transmitted between the relay station RN and the base station based on the data radio bearer DRB.

3. The signaling transmission method according to claim 2, wherein: the signaling is S1 interface signaling or X2 interface signaling.

The signaling transmission method according to claim 2 or 3, wherein a signaling identifier is configured for the signaling to be sent, and the signaling is scheduled according to the signaling identifier, and the Signaling based on DRB transmission between the RN and the base station includes:

Configuring a user bearer quality of service level identifier QCI as the signaling identifier for signaling to be sent;

Obtaining, according to the mapping relationship between the user bearer QCI and the relay bearer QCI of the signaling, obtaining a service quality parameter corresponding to the inherited bearer QCI;

And performing scheduling processing on the signaling according to the obtained quality of service parameter, and transmitting the signaling between the RN and the base station based on the DRB.

Configuring a relay bearer QCI as the signaling identifier for signaling to be sent;

And performing, according to the QoS parameter corresponding to the relay bearer QCI of the signaling, performing scheduling processing on the signaling, and transmitting the signaling between the RN and the base station based on the DRB.

The signaling transmission method according to claim 2 or 3, wherein a signaling identifier is configured for the signaling to be sent, and the signaling is scheduled and processed according to the signaling identifier, The signaling is performed based on the DRB between the RN and the base station, including:

Specifying an identifier for the signaling configuration to be sent, and setting the specified identifier to a packet header of the data packet containing the signaling, as the signaling identifier;

The data packet is scheduled according to the specified identifier, and the data packet including the signaling is transmitted between the RN and the base station based on the DRB.

The signaling transmission method according to claim 6, wherein the specifying the identifier for the signaling to be sent includes:

Identifying the signaling to be sent;

When it is identified that the signaling is bandwidth request message type signaling generated for transmitting signaling, configuring a first identifier as the specified identifier, and identifying a bandwidth request message generated when the signaling is for transmitting data In the class signaling, the second identifier is configured as the specified identifier, and the first identifier and the second identifier are used to indicate scheduling processing of different priorities.

Configuring a user bearer QCI or a relay bearer QCI for signaling to be sent, and further specifying an identifier for the signaling configuration, and setting the specified identifier to a packet header of the data packet including the signaling;

Obtaining a quality of service parameter corresponding to the relay bearer QCI according to the relay bearer QCI corresponding to the user bearer QCI or the configured relay bearer QCI;

The data packet is scheduled according to the specified identifier of the data packet header and the obtained quality of service parameter, and the data packet including the signaling is transmitted between the RN and the base station based on the DRB.

9. The signaling transmission method according to claim 8, wherein:

The resource type in the quality of service parameter corresponding to the relay bearer QCI is set to the guaranteed bit rate GBR, and the packet delay budget PDB is set to be less than 100 milliseconds.

10. The signaling transmission method according to claim 2 or 3, wherein The signaling identifier performs scheduling processing on the signaling, including any one of the following manners:

Performing integrity protection processing on the data packet containing the signaling;

Encrypting and integrity protection processing of the data packet containing the signaling;

Performing header compression, encryption, and integrity protection processing on the data packet including the signaling; performing integrity protection processing on the data packet including the signaling by using the Internet security protocol IPsec, using the packet data convergence protocol PDCP layer Head compression and encryption processing;

Using the radio link control RLC layer to configure an automatic retransmission request and/or a hybrid automatic repeat request function for the data packet containing the signaling; and

A logical channel configuration is applied to the media access control MAC layer for the data packet containing the signaling, the logical channel priority is configured to the highest priority, and/or the priority bit rate is configured to be infinite.

A signaling transmission device, comprising:

The signaling transmission apparatus according to claim 11, wherein the signaling identifier configured by the configuration module is a user bearer quality of service level identifier QCI, and the transmission module includes: a first mapping acquiring unit, And obtaining, according to the mapping relationship between the user bearer QCI and the relay bearer QCI, the service quality parameter corresponding to the corresponding relay bearer QCI;

a first scheduling processing unit, configured to perform scheduling processing on the signaling according to the obtained quality of service parameter;

And a first transmission unit, configured to transmit the air interface between the relay station RN and the base station based on the data radio bearer DRB as user data.

The signaling transmission apparatus according to claim 11, wherein the signaling identifier configured by the configuration module is a relay bearer QC I, and the transmission module includes:

a second scheduling processing unit, configured to perform quality of service corresponding to the relay bearer QCI according to the signaling And a second transmission unit, configured to transmit the signaling between the RN and the base station based on the DRB as user data.

The signaling transmission apparatus according to claim 11, wherein the signaling identifier configured by the configuration module is a designated identifier, and the specified identifier is set in a packet header of a data packet including the signaling. The transmission module includes:

a third scheduling processing unit, configured to perform scheduling processing on the data packet according to the specified identifier; a third transmitting unit, configured to use, according to the DRB, an air interface between the RN and the base station, where the data packet including the signaling is included User data is transmitted.

The signaling transmission device according to claim 14, wherein the configuration module comprises:

An identifying unit, configured to identify the signaling to be sent;

a configuration unit, configured to configure a first identifier as the specified identifier when identifying that the signaling is bandwidth request message type signaling generated for transmitting signaling, and when the signaling is identified as being for transmitting data When the generated bandwidth request message type signaling is configured, the second identifier is configured as the specified identifier, where the first identifier and the second identifier are used to indicate scheduling processing of different priorities;

And a setting unit, configured to set the specified identifier to a packet header of the data packet including the signaling.

The signaling transmission apparatus according to claim 11, wherein the signaling identifier configured by the configuration module is a user bearer QCI or a relay bearer QCI, and the signaling identifier further includes a designated identifier, where The specified identifier is set in a packet header of the data packet including the signaling, and the transmission module includes:

And a fourth mapping acquiring unit, configured to obtain a quality of service parameter corresponding to the relay bearer QCI according to the relay bearer QCI corresponding to the user bearer QCI or the configured relay bearer QCI;

a fourth scheduling processing unit, configured to perform scheduling processing on the data packet according to the specified identifier of the data packet header and the obtained quality of service parameter;

And a fourth transmission unit, configured to transmit, by using the DRB as the user data, the air interface between the RN and the base station, where the data packet including the signaling is included.

17. A signaling transmission method, comprising:

Identifying the to-be-transmitted signaling, and using the radio resource control RRC layer to process the signaling, the processing includes: transmitting the signaling of the user equipment UE between the relay station RN and the base station based on the first type signaling radio bearer SRB The signaling of the RN is transmitted between the RN and the base station based on the second type of SRB.

The signaling transmission method according to claim 17, wherein: the first type of SRB is used to carry an RRC message, a non-access stratum NAS message, an S1 interface signaling, and/or an X2 interface signaling of a UE. The second type of SRB is used to carry an RRC message and a NAS message of the RN.

The signaling transmission method according to claim 17, wherein: transmitting the signaling of the UE between the RN and the base station based on the first type of SRB comprises:

The RRC message, the NAS message, the S1 interface signaling, and the X2 interface signaling of the UE are transmitted between the RN and the base station based on two, three or four first-class SRBs, and each first-class SRB carrying different signaling Have the same or different priorities;

All or part of the second type of SRB has a higher priority than all or part of the first type of SRB.

20. A signaling transmission apparatus, comprising:

An identification module, configured to identify signaling to be sent;

a user equipment UE signaling processing module, configured to: when the identification module identifies that the signaling is a signaling of the UE, use a radio resource control RRC layer to process the signaling, so that the signaling of the UE is in the relay station. The RN and the base station transmit based on the first type of signaling radio bearer SRB;

The RN signaling processing module is configured to: when the identifying module identifies the signaling that is the signaling of the RN, process the signaling by using an RRC layer, so that the signaling of the RN is based on the RN and the base station. The second type of SRB is transmitted.

The signaling transmission apparatus according to claim 20, wherein the UE signaling processing module comprises:

a UE signaling identification unit, configured to: when the identification module identifies that the signaling is a signaling of the UE, identify an RRC message, a non-access stratum NAS message, an S1 interface signaling, or X2 Interface signaling

a UE signaling transmission unit, configured to transmit, according to two, three or four first-class SRBs, between the RN and the base station, the RRC message, the NAS message, the S1 interface signaling, and the X2 interface signaling of the UE are different. Each of the first type of SRBs of the signaling has the same or different priorities, and all or part of the second type of SRBs have a higher priority than all or part of the first type of SRBs.