WO2015161408A1

WO2015161408A1 - Network for establishing adaptive multi-rate voice service

Info

Publication number: WO2015161408A1
Application number: PCT/CN2014/075801
Authority: WO
Inventors: 王伟
Original assignee: 华为技术有限公司
Priority date: 2014-04-21
Filing date: 2014-04-21
Publication date: 2015-10-29
Also published as: CN104067547A; CN104067547B

Abstract

The present invention relates to the field of adaptive multi-rate voice. Provided are a network, method and serving radio network controller (SRNC) for establishing an adaptive multi-rate voice service, the method comprising: an SRNC receives an uplink direct transfer message transmitted by a user equipment (UE), a non-access layer (NAS) message contained in the uplink direct transfer message recording a valid AMR-WB identifier and a valid AMR-NB identifier; the SRNC conducts congestion detection on the resources of a cell where the UE is located; if the SRNC determines that the resources of the cell where the UE is located are congested, then the SRNC transmits to a core network (CN) a first direct transfer message containing the modified NAS message, and the AMR-WB identifier in the modified NAS message is modified as invalid, so that the CN establishes a radio access bearer (RAB) with the AMR-NB service of the UE via the SRNC. The present invention can establish AMR-WB service or AMR-NB service for a newly accessed UE according to the resources of the cell for establishing AMR-WB service, and increase the success rate of establishing the AMR service in the cell.

Description

A network for establishing adaptive multi-rate voice services

Technical field

The present invention belongs to the field of adaptive multi-rate voice, and in particular, to a network, a method, and a radio network controller for establishing an adaptive multi-rate voice service.

Background technique

Wideband Adaptive Multirate Voice (Adaptive Multi Rate-Wide) Band, AMR-WB) is a voice coding method. The audio signal generated by AMR-WB coding maintains the voice penetration effect, and can provide realistic sound quality service, which is closer to face-to-face conversation. During the conversation between the two users, most of the speech energy is concentrated in the low frequency, AMR-WB supports the speech coding of the low frequency speech signal of 50-200 Hz, and then the AMR-WB service supports the low frequency speech signal, which is provided by the MR-WB service. The low frequency signal of 50-200Hz can make the voice more realistic and more comfortable. In addition, AMR-WB can support the encoding of high frequency speech signals of 3400-7000Hz. The encoded low frequency signal can better preserve the friction sound, making AMR - The audio signal provided by the WB service is more on-site and easier to identify the other party.

The development of 3G video services such as video telephony, video conferencing, and multimedia broadcasting also raises the requirements for language quality, making AMR-WB more widely used. For the process of establishing an AMR-WB service in the prior art, the process of establishing the AMR-WB service is in the user equipment (User Equipment, UE) and service radio network controller (Serving Radio Network Radio Resource Control Protocol (Radio Resource) between Controller and SRNC Control, RRC) is implemented in the case of establishing a connection, and the process of establishing the AMR-WB service includes:

1. The UE sends an uplink direct transmission message of the RRC protocol to the SRNC (UPLINK DIRECT). TRANSFER) to initiate the uplink direct transmission process, wherein the uplink direct transmission message includes the NAS message and the core network (Core Network, CN) identifies information such as the identifier of the AMR-NB and the identifier of the AMR-WB, and indicates the AMR capability of the UE by the identifier of the AMR-NB and the identifier of the AMR-WB, if the AMR-NB If the identifier is valid, the CN may establish an AMR-NB service with the UE. If the identifier of the AMR-NB is invalid, the CN cannot establish an AMR-NB service with the UE, and if If the identifier of the AMR-WB is valid, the CN may establish an AMR-WB service with the UE. If the identifier of the AMR-WB is invalid, the CN cannot establish an AMR-WB service with the UE. In the case that the UE supports the AMR-NB service, that is, the identifier of the AMR-NB in the NAS message included in the uplink direct transmission message is valid.

2. After receiving the uplink direct transmission message, the SRNC does not process the NAS message included in the uplink direct transmission message, and directly generates a direct transmission message including the NAS message (DIRECT TRANSFER), and routing according to the CN identifier included in the uplink direct transmission message, and the radio access network application part (Radio Access Network Application) Part, RANAP) Direct Messaging (DIRECT) TRANSFER) is sent to the CN matching the CN identifier through the lu interface; thus, if the UE has the AMR-WB capability, the NAS message is used in the cell regardless of whether the codeword used to establish the AMR-WB service is used up. (Identification of a valid AMR-WB) is forwarded to the CN to establish an AMR-WB service by the CN, and thus the AMR-WB can be used when the cell can be used to establish an AMR-WB service. The establishment success rate of the business is extremely low;

3. The CN establishes a radio access bearer RAB with the AMR-NB service of the UE by using the SRNC.

Generally, for a cell, a codeword for establishing an AMR-WB service is limited, for example, a codeword table used in the prior art, and a spreading factor of the codeword table is established (Spreading) Factor, SF) is 64; however, as more and more AMR-WB capable UEs are in the cell, the codewords contained in the codeword table are quite limited.

technical problem

It is an object of the present invention to provide a method for establishing an adaptive multi-rate voice service, which is used to determine whether an AMR-WB service is established in a cell, and if it is not sufficient to determine whether the codeword is sufficient in advance, if it is used to establish an AMR-WB service. The codeword is not enough, causing the codeword of the cell to be congested, resulting in a problem that the probability of successfully establishing the AMR-WB service is extremely low.

Technical solution

The first aspect is a method for establishing an adaptive multi-rate voice service, where the method for establishing an adaptive multi-rate voice service includes:

The radio network controller SRNC receives the uplink direct transmission message sent by the user equipment UE, and the non-access stratum NAS message included in the uplink direct transmission message records an effective broadband adaptive multi-rate voice AMR-WB identifier and an effective narrowband self- Adapt to the identification of multi-rate voice AMR-NB;

The SRNC performs congestion detection on resources of a cell where the UE is located;

If the SRNC determines that the resource of the cell where the UE is located is congested, the first direct transmission message is sent to the core network CN, where the first direct transmission message includes the modified NAS message, and the modified NAS message The identity of the AMR-WB is modified to be invalid, such that the CN establishes a radio access bearer RAB with the AMR-NB service of the UE through the SRNC.

With reference to the first aspect, in a first possible implementation manner of the first aspect, after the step of the SRNC performing congestion detection on a resource of a cell where the UE is located, the method for establishing an adaptive multi-rate voice service is further include:

If the SRNC determines that the resource of the cell where the UE is located is not congested, the second direct transmission message is sent to the CN, and the second direct transmission message includes the NAS message, so that the CN passes the SRNC. Establishing a radio access bearer RAB with the AMR-WB service of the UE.

With reference to the first aspect, or the first possible implementation manner of the first aspect, in a second possible implementation manner of the first aspect, the SRNC performs congestion detection on a resource of a cell where the UE is located, and specifically includes:

Determining, by the SRNC, whether the codeword table contains unallocated codewords;

If the SRNC determines that the resource of the cell where the UE is located is congested, the first direct transmission message is sent to the core network CN, where the first direct transmission message includes the modified NAS message, and the modified NAS message The step of modifying the identifier of the AMR-WB to be invalid, so that the CN establishes a radio access bearer RAB with the AMR-NB service of the UE by using the SRNC, and specifically includes:

If the SRNC determines that the codewords in the codeword table have been allocated, the SRNC sets the identifier of the AMR-WB in the NAS message to be invalid and the identifier of the AMR-NB in the NAS message. Set to be valid, generate a first direct transmission message containing the modified NAS message;

If the SRNC determines that the resource of the cell where the UE is located is not congested, the second direct transmission message is sent to the CN, and the second direct transmission message includes the NAS message, so that the CN passes the SRNC. The step of establishing a radio access bearer RAB with the AMR-WB service of the UE further includes:

If the SRNC determines that the codeword table includes an unassigned codeword, the SRNC generates a second direct transmission message, and the identifier of the AMR-WB in the NAS message included in the second direct transmission message is valid.

In conjunction with the first aspect, or the first possible implementation of the first aspect, or the second possible implementation of the first aspect, in a third possible implementation of the first aspect, the NAS message and the The identifier of the AMR-NB in the modified NAS message includes at least one of the following: AMR-NB of the universal mobile communication system UMTS, AMR-NB of the half rate HR, AMR-NB of the full rate FR, and 8 phase shift keying half AMR-NB of rate OHR.

In combination with the first aspect or the first possible implementation of the first aspect or the second possible implementation of the first aspect or the third possible implementation of the first aspect, the fourth possibility in the first aspect In an implementation manner, the identifier of the AMR-WB in the NAS message and the modified NAS message includes at least one of the following: AMR-WB of UMTS, AMR-WB of FR, AMR-WB of 8 phase shift keying full rate OFR, and AMR-WB of OHR.

In a second aspect, a radio network controller, the radio network controller includes:

a receiving unit, configured to receive an uplink direct transmission message sent by the user equipment UE, where the non-access layer NAS message included in the uplink direct transmission message records an effective broadband adaptive multi-rate voice AMR-WB identifier and an effective narrowband self- Adapt to the identification of multi-rate voice AMR-NB;

a determining unit, configured to perform congestion detection on resources of a cell where the UE is located;

a message sending unit, configured to send a first direct transmission message to the core network CN, if the resource of the cell where the UE is located is congested, where the first direct transmission message includes a modified NAS message, and the modified NAS The identity of the AMR-WB in the message is modified to be invalid, such that the CN establishes a radio access bearer RAB with the AMR-NB service of the UE through the SRNC.

In conjunction with the second aspect, in a first possible implementation manner of the second aspect, the message sending unit is further configured to:

If it is determined that the resource of the cell where the UE is located is not congested, sending a second direct transmission message to the CN, where the second direct transmission message includes the NAS message, so that the CN establishes and cooperates with the SRNC. The radio access bearer RAB of the AMR-WB service of the UE.

With reference to the second aspect, or the first possible implementation manner of the second aspect, in the second possible implementation manner of the second aspect, the determining unit is specifically configured to: determine whether the codeword table includes an unallocated code word;

The message sending unit is specifically configured to: if the codewords in the codeword table are all allocated, send a first direct transmission message to the core network CN, where the first direct transmission message includes the modified NAS message, The identifier of the AMR-WB in the modified NAS message is modified to be invalid, so that the CN establishes a radio access bearer RAB with the AMR-NB service of the UE through the SRNC;

The message sending unit is further configured to: if the codeword table includes an unallocated codeword, send a second direct transmission message to the CN, where the second direct transmission message includes the NAS message, so that the CN Establishing, by the SRNC, a radio access bearer RAB with the AMR-WB service of the UE.

With reference to the second aspect, or the first possible implementation manner of the second aspect, or the second possible implementation manner of the second aspect, in a third possible implementation manner of the second aspect, the NAS message and the The identifier of the AMR-NB in the modified NAS message includes at least one of the following: AMR-NB of the universal mobile communication system UMTS, AMR-NB of the half rate HR, AMR-NB of the full rate FR, and 8 phase shift keying half AMR-NB of rate OHR.

With reference to the second aspect or the first possible implementation of the second aspect or the second possible implementation of the second aspect or the third possible implementation of the second aspect, the fourth possibility in the second aspect In an implementation manner, the identifier of the AMR-WB in the NAS message and the modified NAS message includes at least one of the following: AMR-WB of UMTS, AMR-WB of FR, AMR-WB of 8 phase shift keying full rate OFR, and AMR-WB of OHR.

A third aspect is a wireless network controller, the wireless network controller comprising: a processor, a network interface, a memory, and a bus, wherein the processor, the network, and the memory are coupled together by the bus, wherein

The processor controls the operation of the radio network controller to implement the method of any one of claims 1 to 5, the steps of the method being completed by an integrated logic circuit of the hardware in the processor or an instruction in the form of software ;

The network interface is an interface having a receiving function and a sending function, and includes a network communication interface of the hardware and a network communication protocol interface of the software;

The memory stores software executed by the processor to provide instructions and data to the processor.

The fourth aspect is a network for establishing an adaptive multi-rate voice service, where the network for establishing an adaptive multi-rate voice service includes: a user equipment UE, a radio network controller SRNC, and a core network CN;

The UE is configured to send an uplink direct transmission message to the SRNC, where the uplink direct transmission message includes a non-access stratum NAS message and a core network CN identifier, and the NAS message included in the uplink direct transmission message records an effective broadband Identification of an adaptive multi-rate voice AMR-WB and identification of an effective narrowband adaptive multi-rate voice AMR-NB;

The SRNC is configured to perform congestion detection on a resource of a cell where the UE is located, and if it is determined that the resource of the cell where the UE is located is congested, send a first direct transmission message to the core network CN, where the first direct transmission message is sent. Including the modified NAS message, the identifier of the AMR-WB in the modified NAS message is modified to be invalid;

The CN is configured to receive the first direct transmission message sent by the SRNC, and establish, by using the SRNC, a radio access bearer RAB that is related to the AMR-NB service of the UE.

With reference to the fourth aspect, in a first possible implementation manner of the fourth aspect, the SRNC is further configured to send a second direct transmission message to the CN if it is determined that the resource of the cell where the UE is located is not congested The second direct transmission message includes the NAS message;

The CN is further configured to receive the second direct transmission message sent by the SRNC, and establish, by using the SRNC, a radio access bearer RAB that is related to the AMR-WB service of the UE.

With reference to the fourth aspect, or the first possible implementation manner of the fourth aspect, in the second possible implementation manner of the fourth aspect, the SRNC is further configured to detect the NAS message included in the uplink direct transmission message. If the identifier of the AMR-WB is valid, it is determined whether the codeword table contains unallocated codewords, and is also used to: if the codewords in the codeword table are allocated, the AMR- in the NAS message is The identifier of the WB is set to be invalid and the identifier of the AMR-NB in the NAS message is asserted, and the first direct transmission message including the modified NAS message is generated, and is also used if the codeword table contains unallocated codewords. And generating a second direct transmission message, where the identifier of the AMR-WB in the NAS message included in the second direct transmission message is valid.

With reference to the fourth aspect, or the first possible implementation manner of the fourth aspect, or the second possible implementation manner of the fourth aspect, in a third possible implementation manner of the fourth aspect, the NAS message and the The identifier of the AMR-NB in the modified NAS message includes at least one of the following: AMR-NB of the universal mobile communication system UMTS, AMR-NB of the half rate HR, AMR-NB of the full rate FR, and 8 phase shift keying half AMR-NB of rate OHR.

In conjunction with the fourth aspect or the first possible implementation of the fourth aspect or the second possible implementation of the fourth aspect or the third possible implementation of the fourth aspect, the fourth possibility in the fourth aspect In an implementation manner, the identifier of the AMR-WB in the NAS message and the modified NAS message includes at least one of the following: AMR-WB of UMTS, AMR-WB of FR, AMR-WB of 8 phase shift keying full rate OFR, and AMR-WB of OHR.

Beneficial effect

The invention has the following advantages: if the AMR-WB capable UE in the cell wishes to establish an AMR-WB service, it sends an uplink direct transmission message to the SRNC in the same cell; the SRNC detects that the uplink direct transmission message is included. When the identifier of the AMR-WB in the NAS message is valid, the SRNC performs congestion detection on the resource of the cell where the UE is located; if the SRNC determines that the resource of the cell where the UE is located is congested, the SRNC will use the NAS message. The identifier of the AMR-WB is set to be invalid, the identifier of the AMR-NB in the NAS message is kept valid, and the first direct transmission message including the modified NAS message is sent to the CN; the CN is established and described The radio access of the AMR-NB service of the UE carries the RAB, and the AMR-NB service is established for the UE. In this way, the UE that successfully establishes the AMR-NB service in the cell can perform the audio data transmission normally, and can also establish the AMR-NB service for the newly accessed UE, thereby improving the success rate of establishing the AMR service in the cell. .

DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the embodiments or the description of the prior art will be briefly described below. It is obvious that the drawings in the following description are only the present invention. For some embodiments, other drawings may be obtained from those of ordinary skill in the art in light of the inventive workability.

1 is a network architecture diagram of a network for establishing an adaptive multi-rate voice service according to an embodiment of the present invention;

2 is a first flowchart of a method for establishing an adaptive multi-rate voice service according to an embodiment of the present invention;

3 is a second flowchart of a method for establishing an adaptive multi-rate voice service according to an embodiment of the present invention;

4 is a first structural diagram of a radio network controller according to an embodiment of the present invention.

FIG. 5 is a second structural diagram of a radio network controller according to an embodiment of the present invention.

Embodiments of the invention

The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In order to explain the technical solution described in the present invention, the following description will be made by way of specific embodiments.

In the embodiment of the present invention, “first” and “second” are both means; for example: “first direct transmission message”, “first RAB assignment request message”, “first radio bearer setup message”, The "first radio bearer setup complete message" and the "first RAB assignment response message" respectively include "first" as a substitute; "second direct pass message", "second RAB assignment request message", and second The "secondary" included in the radio bearer setup message", the "second radio bearer setup complete message", and the "second RAB assignment response message" are respectively referred to.

Figure 1 shows the network architecture of the network for establishing adaptive multi-rate voice services. For ease of description, only the portions related to the embodiments of the present invention are shown. The network for establishing an adaptive multi-rate voice service is provided in the embodiment of the present invention. As shown in FIG. 1 , the network for establishing an adaptive multi-rate voice service includes: a user equipment (User Equipment, UE), Serving Radio Network Controller (SRNC) and core network (Core Network, CN). The UE can pass through a non-access stratum (Non-access Stratum, NAS) message contains AMR-WB identification and narrowband adaptive multi-rate speech (Adaptive Multi Rate- Narrow) The identity of the Band, AMR-NB) informs the SRNC and the CN whether the UE has the capability to support the AMR-WB service, and whether the UE has the capability to support the AMR-NB service. Specifically, the UE sends an uplink direct transmission message to the SRNC when the AMR service is established, where the uplink direct transmission message includes a NAS message and a CN identifier, and the NAS message included in the uplink direct transmission message records an AMR-WB Identification and identification of AMR-NB. It is to be noted that the AMR capability of the UE may be determined by using the NAS message in the uplink direct transmission message, where the AMR capability includes the AMR-NB capability and the AMR-WB capability; if the identifier of the AMR-NB is valid, the UE is indicated. If the AMR-NB is invalid, the AMR-NB is invalid. The AMR-WB is valid. The AMR-WB is valid. It means that the UE does not have the AMR-WB capability. The AMR capability indicates that the UE is capable of supporting an AMR service; wherein the AMR-NB capability indicates that the UE can support an AMR-NB service; wherein the AMR-WB capability indicates that the UE can support an AMR-WB service .

The UE in the network that establishes the adaptive multi-rate voice service is configured to send an uplink direct transmission message to the SRNC, where the uplink direct transmission message includes a non-access stratum NAS message and a core network CN identifier, where The NAS message recorded by the uplink direct transmission message has an effective broadband adaptive multi-rate voice AMR-WB identifier and an effective narrow-band adaptive multi-rate voice AMR-NB identifier. Generally, the UE has the AMR-NB capability; and when the UE wants to establish an AMR-WB service in the cell, the AMR-NB identifier and the AMR-WB identifier in the NAS message are both set to Efficiently generating an uplink direct transmission message, and sending the generated uplink direct transmission message to the SRNC, and instructing the SRNC to establish an AMR-WB service by using the uplink direct transmission message. It should be noted that the generated uplink direct transmission message further includes a CN identifier, where the CN identifier is used to specify the CN, that is, the CN specified by the CN identifier is required to establish an AMR service for the UE in the cell.

The SRNC in the network that establishes the adaptive multi-rate voice service is used to perform congestion detection on the resource of the cell where the UE is located, and if it is determined that the resource of the cell where the UE is located is congested, send the message to the core network CN. The first direct transmission message includes a modified NAS message, and the identifier of the AMR-WB in the modified NAS message is modified to be invalid; the SRNC is further used to determine The resource of the cell in which the UE is located is not congested, and sends a second direct transmission message to the CN, where the second direct transmission message includes the NAS message.

Specifically, when receiving the uplink direct transmission message sent by the UE, the SRNC detects that the identifier of the AMR-WB in the uplink direct transmission message is valid or invalid, if the AMR in the uplink direct transmission message is The identifier of the WB is valid, and the UE in the cell supports the AMR-WB service. If the identifier of the AMR-WB in the uplink direct transmission message is invalid, continue to detect that the identifier of the AMR-NB in the uplink direct transmission message is valid or In the case of the AMR-NB, the identity of the AMR-NB in the uplink direct transmission message is valid, that is, the UE in the cell supports the AMR-NB service. If the identity of the AMR-NB in the uplink direct transmission message is also invalid, the UE does not support the AMR-NB service, and the AMR-WB identifier and the AMR-NB identifier in the uplink direct transmission message are both When invalid, the UE does not support AMR services (including AMR-WB services and AMR-NB services). The SRNC performs congestion detection on a resource of a cell where the UE is located when detecting that the identifier of the AMR-WB in the NAS message included in the uplink direct transmission message is valid. And if it is determined that the resource of the cell where the UE is located is not congested, sending a second direct transmission message to the CN (the CN specified by the CN identifier in the uplink direct transmission message), where the second direct transmission message includes the NAS message. Recording a valid AMR-WB identity, such that the CN establishes a radio access bearer with the AMR-WB service of the UE through the SRNC ( Radio Access Bearer, RAB). If the SRNC determines that the resource of the cell where the UE is located is congested, the first direct transmission message is sent to the CN, and the first direct transmission message includes a modified NAS message, where the modified NAS message is The identity of the AMR-WB is modified to be invalid, such that the CN establishes a radio access bearer RAB with the AMR-NB service of the UE through the SRNC.

In a preferred embodiment of the present invention, the SRNC is further configured to: when it is determined that the identifier of the AMR-WB in the NAS message included in the uplink direct transmission message is valid, determine whether the codeword table includes an unassigned codeword, And if the codewords in the codeword table are all allocated, the identifier of the AMR-WB in the NAS message is invalidated, and the identifier of the AMR-NB in the NAS message is set to be valid, Generating a first direct transmission message including the modified NAS message, and further, if the codeword table includes an unallocated codeword, generating a second direct transmission message, where the second direct transmission message includes an AMR in the NAS message - The identifier of WB is valid.

Specifically, the method for performing congestion detection on the resource of the cell where the UE is located is: the SRNC collects the resource of the cell by using a codeword table, and detects, in the NAS message, the AMR in the NAS message included in the uplink direct transmission message. If the identifier of the WB is valid, it is determined whether the codeword table has left unallocated codewords; if the codewords in the codeword table are all allocated, the SRNC identifies the AMR-WB in the NAS message. If it is invalid, the SRNC sets the identifier of the AMR-NB in the NAS message to be valid, and generates a first direct transmission message including the modified NAS message, and matches the CN identifier included in the uplink direct transmission message. The CN sends the first direct transmission message. If the codeword table further includes an unassigned codeword, the SRNC generates a second direct transmission message (the identifier of the AMR-WB in the NAS message included in the second direct transmission message is valid), The CN of the uplink direct transmission message includes a CN that matches the CN to send the second direct transmission message.

It is worth noting that for each cell, there is a codeword table. Since the resources for establishing AMR services (including AMR-WB services and AMR-NB services) in the cell are limited, the codewords in the codeword table are also limited, by judging whether there are remaining codes in the codeword table. The word implements congestion detection of resources of the cell. Specifically, when receiving the uplink direct transmission message sent by a certain UE in the cell, the SRNC determines the codeword table if it detects that the identifier of the AMR-WB in the NAS message included in the uplink direct transmission message is valid. Whether there is an unallocated codeword remaining to perform congestion detection on the resource of the cell; if the codeword table further includes a codeword allocation (that is, the resource of the cell is not congested), the SRNC generates a second direct transmission message. (The identifier of the AMR-WB in the NAS message included in the second direct transmission message is valid), and the second direct transmission message is sent to the CN that matches the CN identifier included in the uplink direct transmission message, by using the The two direct transmission message informs the CN that the AMR-WB service is established for the UE in the cell. If the codewords in the codeword table are all allocated (that is, the resources of the cell are congested), even if the UE in the cell supports the AMR-WB service, the CN cannot establish more AMR-WBs for the UEs in the cell. If the AMR service is still set up for the UE, the SRNC modifies the identifier of the AMR-WB in the NAS message to be invalid when the first direct transmission message is generated, and keeps the identifier of the AMR-NB in the NAS message valid. The SRNC sends the first direct transmission message to the CN, and the first direct transmission message is used to inform the CN to establish an AMR-NB service for the UE in the cell.

The CN in the network that establishes the adaptive multi-rate voice service is used to receive the first direct transmission message sent by the SRNC, and establish a wireless connection with the AMR-NB service of the UE by using the SRNC. The bearer RAB is entered; the AMR-NB service is established with the UE. Specifically, after the CN receives the first direct transmission message, it is determined that the resource of the cell is congested (eg, by using a codeword detection manner, detecting that the cell has congestion of the codeword); even if the cell is in the cell The UE that supports the uplink direct transmission message supports the AMR-WB service, and only the CN establishes the AMR-NB service for the UE. The step of the CN establishing the AMR-NB service for the UE is specifically: the CN passes the SRNC. Establishing an RAB of the AMR-NB service with the UE. After the RAB of the AMR-NB service is established, the CN may perform data transmission of the AMR-NB service with the UE.

The CN in the network that establishes the adaptive multi-rate voice service is further configured to receive the second direct transmission message sent by the SRNC, and establish, by the SRNC, a wireless service with the AMR-WB service of the UE. The access bearer RAB; the CN establishes an AMR-WB service with the UE. Specifically, after the second direct transmission message is received by the CN, it is learned that the resource of the cell is not congested (eg, by using a codeword detection manner, detecting that there is no codeword congestion in the cell), and also knowing that the cell is in the cell. The UE that sends the uplink direct transmission message supports the AMR-WB service, and the CN establishes an AMR-WB service for the UE; the step of the CN establishing the AMR-WB service for the UE is specifically: The SRNC establishes an RAB for the AMR-WB service with the UE. After the RAB of the AMR-WB service is established, the CN may perform data transmission of the AMR-WB service with the UE.

In this way, in the process of establishing the AMR service, the network for the adaptive multi-rate voice service provided by the embodiment maintains the UE that has successfully established the AMR-WB service (the SRNC has allocated resources for the UE, such as the codeword allocated. The codeword in the table can continue to perform the audio signal transmission of the AMR-WB service, and the UE that establishes the AMR-WB service for other applications having the AMR-WB capability in the cell, if used to establish the AMR in the cell If the resource of the WB service is congested (if the codewords in the codeword table are allotted), the CN is identified by the first direct transmission message, and the specified CN of the CN identifier is the cell. The UE in the middle establishes the AMR-NB service. When the UE in the cell has both the AMR-WB capability and the AMR-NB capability, the network of the adaptive multi-rate voice service establishes an AMR-WB service for the UE according to the resource of the cell, if the resource of the cell does not exist. The resources of the cell are congested, and the AMR-NB service is established for the UE, which effectively improves the success rate of establishing the AMR service.

In an embodiment of the present invention, the RRC connection of the RRC protocol between the UE in the cell and the SRNC in the cell is established in advance, and the UE may send the uplink direct transmission message of the RRC protocol to the SRNC.

The step of establishing an RRC connection between the UE and the SRNC by using the RRC protocol includes: the UE sending an RRC connection request message of the RRC protocol (RRC) CONNECTION REQUEST) to the SRNC, the RRC connection request message is used to request to establish an RRC connection with the SRNC; the SRNC feeds back an RRC connection setup message (RRC of the RRC protocol) CONNECTION SETUP) to the UE, the RRC connection setup message is used to feed back the UE The RRC connection setup is successful, the RRC connection setup message includes a channel allocated by the SRNC for the UE for RRC connection; and the UE sends an RRC connection setup complete message (RRC of the RRC protocol) on the allocated channel. CONNECTION SETUP COMPLETE) to the SRNC; and ending the process of establishing an RRC connection between the UE and the SRNC, and successfully establishing an RRC connection between the UE and the SRNC.

In addition, the UE may send the uplink direct transmission message of the RRC protocol to the SRNC by using an allocated channel, where the uplink direct transmission message includes at least a NAS message and a CN identifier, and further includes an identifier of the AMR-WB and an AMR-NB. Logo.

In an embodiment of the present invention, if the UE in the cell only has the AMR-NB capability, the SRNC does not need to modify the NAS message in the uplink direct transmission message when receiving the uplink direct transmission message sent by the UE (because, The identifier of the AMR-NB in the NAS message is already valid, and the identifier of the AMR-WB in the NAS message is invalid. The first direct transmission message containing the NAS message is directly generated. In addition, the SRNC determines that the resource of the cell is congested, and sets the identifier of the AMR-WB in the NAS message included in the uplink direct transmission message to be invalid, and keeps the identifier of the AMR-NB in the NAS message valid. The SRNC generates a first direct transmission message including the modified NAS message, and sends the first direct transmission message to the CN specified by the CN identifier included in the uplink direct transmission message.

The process of establishing the AMR-NB service to the UE by the specified CN is performed by the CN, and the process of establishing the AMR-NB service is as follows: 1. The CN sends the first RAB assignment request message of the RANAP protocol to the SRNC in the UTRAN. (RAB ASSIGNMENT REQUEST), requesting, by the first RAB assignment request message, the RAB of the AMR-NB to be established by the UE, where the first RAB assignment request message includes a valid identifier of the AMR-NB, The UE is specified to establish an AMR-NB service only with the CN. After the SRNC receives the first RAB assignment request message, the SRNC sends a first radio bearer setup message (RADIO) of the RRC protocol to the UE. BEARER SETUP), requesting, by the first radio bearer setup message, the UE to establish a radio bearer of the AMR-NB (Radio Bearer, RB); the first radio bearer setup message also includes a valid identifier of the AMR-NB to specify that the UE establishes an AMR-NB service with the CN. After the UE receives the first radio bearer setup message, the UE establishes a radio bearer of the AMR-NB; after completing the RB establishment of the AMR-NB, the UE sends the RB to the SRNC. The first radio bearer setup complete message of the RRC protocol (RADIO) BEARER SETUP COMPLETE), by using the first radio bearer setup complete message to feed back to the SRNC: the UE successfully establishes an RB of the AMR-NB. 4. After receiving the first radio bearer setup complete message, the SRNC sends a first RAB assignment response message (RAB) of the RANAP protocol to the CN. ASSIGNMENT RESPONSE), by the first RAB assignment response message feedback: the UE successfully establishes the RAB of the AMR-NB. It should be emphasized that the first RAB assignment request message, the first radio bearer setup message, the first radio bearer setup complete message, and the first RAB assignment response message all include a NAS message and a CN identifier. And the information is such that the AMR service established by the CN specified by the CN identifier and the UE is: the AMR-NB service specified by the identifier of the AMR-NB in the NAS message.

In another embodiment of the present invention, the UE in the cell has an AMR-WB capability, and the SRNC in the cell receives the uplink direct transmission message sent by the UE, detects that the resource of the cell is not congested, and generates a second direct transmission message. (including the NAS message in the uplink direct transmission message, the AMR-WB identifier in the NAS message is valid); the SRNC sends the second direct transmission to the CN specified by the CN identifier included in the uplink direct transmission message Message.

In addition, the CN specified by the CN identifier may assign an AMR-WB service to the UE after receiving the second direct transmission message, and the process of establishing the AMR-WB service is as follows: 1. The CN sends the location to the SRNC in the UTRAN. a second RAB assignment request message of the RANAP protocol, requesting, by the second RAB assignment request message, the RAB of the AMR-WB to be established by the second RAB assignment request message; wherein the second RAB assignment request message includes a valid The identification of the AMR-WB. After receiving the second RAB assignment request message, the SRNC sends a second radio bearer setup message of the RRC protocol to the UE, and requests the UE to establish a location by using the second radio bearer setup message. The radio bearer RB of the AMR-WB; wherein the second radio bearer setup message includes a valid identifier of the AMR-WB. After the UE receives the second radio bearer setup message, the UE establishes the radio bearer of the AMR-WB; after the UE completes the RB establishment of the AMR-WB, the UE feeds back to the SRNC. The second radio bearer setup complete message of the RRC protocol is used to feed back the SRNC by using the second radio bearer setup complete message: the UE successfully establishes the RB of the AMR-WB. After receiving the second radio bearer setup complete message, the SRNC feeds back a second RAB assignment response message of the RANAP protocol to the CN, and the second RAB assignment response message feeds back the CN: The UE successfully establishes the RAB of the AMR-WB. It should be emphasized that the second RAB assignment request message, the second radio bearer setup message, the second radio bearer setup complete message, and the second RAB assignment response message all include a NAS message and a CN identifier. And the information, the AMR service established by the CN identifier and the AMR service established by the UE is the AMR-WB service specified by the identifier of the AMR-WB in the NAS message.

In another embodiment of the present invention, the identifier of the AMR-NB in the NAS message and the modified NAS message includes at least one of the following: a universal mobile communication system (Universal AMT-NB of Mobile Telecommunications System (UMTS), AMR-NB of Half Rate (HR), full rate (Full Rate, FR) AMR-NB and 8 phase shift keyed half rate (OHR) AMR-NB.

Specifically, in general, the UE definitely supports the existing AMR-NB, so the NAS message includes at least one of the following: a valid UMTS AMR-NB, a valid HR AMR-NB, and a valid FR. AMR-NB and AMR-NB with effective OHR.

In another embodiment of the present invention, the identifier of the AMR-WB in the NAS message and the modified NAS message includes at least one of the following: UMTS AMR-WB, FR AMR-WB, 8 phase shift keying full rate (8PSK Full Rate, OFR) AMR-WB and 8 phase shift keying half rate (8PSK Half) Rate, OHR) of AMR-WB.

Specifically, for a UE supporting AMR-WB, the UE may inform the SRNC and the CN of the AMR-WB capability that it has through the NAS message, so the NAS message includes at least one of the following: valid AMR-WB of the UMTS, valid AMR-WB of FR, AMR-WB of effective OFR, and AMR-WB of effective OHR.

As a specific implementation of the present invention, the NAS message includes 3GPP TS 24.008 Supported Codec IEI (Supported Codec IEI) supported by the Codec protocol, the supported codec list IEI includes a codec bitmap (Codec) Bitmap), the codec bitmap is recorded with an AMR-NB identifier and an AMR-WB identifier, and the codec bitmap is shown in Table 1.

8 8	7 7	6 6	5 5	4 4	3 3	2 2	1 1
TDMA EFR TDMA EFR	UMTS AMR 2 UMTS AMR 2	UMTS AMR UMTS AMR	HR AMR HR AMR	FR AMR FR AMR	GSM EFR GSM EFR	GSM HR GSM HR	GSM FR GSM FR
16 16	15 15	14 14	13 13	12 12	11 11	10 10	9 9
保留 Reserved	保留 Reserved	OHR AMR OHR AMR	OFR AMR OFR AMR	OHR AMR OHR AMR	UMTS AMR UMTS AMR	FR AMR FR AMR	PDC EFR PDC EFR

Table 1

The codec bitmap provided in Table 1 includes 2 bytes (16 bits); wherein the AMR-NB identifier includes 4 bits of FR AMR, 5 bits of HR AMR, 6-bit UMTS AMR, 7-bit UMTS AMR 2, and 12-bit OHR AMR; among them, the fourth FR AMR is the FR AMR-NB identifier, the fifth HR AMR is the AMR-NB identifier of the HR, the UMTS AMR of the 6th digit and the UMTS AMR 2 of the 7th digit are the identifiers of the AMR-NB of the UMTS, and the OHR of the 12th digit The AMR is the identifier of the AMR-NB of the OHR; if the identifier of the AMR-NB is 1 (representing the AMR-NB capability), the identification of the AMR-NB is valid, if the identifier of the AMR-NB is 0 (representing that there is no AMR- NB capability), the AMR-NB flag is invalid, for example: if the 4-bit FR AMR is 1 (representing AMR-NB capability with FR), then the FR AMR-NB flag is valid, if 4-bit FR If the AMR is 0 (representing the AMR-NB capability without FR), the identity of the AMR-NB of the FR is invalid.

Among them, the AMR-WB logo includes 10-bit FR AMR-WB, 11-bit UMTS AMR-WB, 13-bit OFR AMR-WB and 14-bit OHR AMR-WB; among them, the 10th FR AMR-WB is the FR AMR-WB logo, the 11th UMTS AMR-WB is the identifier of AMR-WB of UMTS, the OFR AMR-WB of the 13th is the identifier of AMR-WB of OFR, and the OHR of 14th place AMR-WB is the identifier of the AMR-WB of the OHR; if the identifier of the AMR-WB is 1 (representing the AMR-WB capability), the identification of the AMR-WB is valid, if the identifier of the AMR-WB is 0 (representative does not have AMR-WB capability), the AMR-WB logo is invalid, for example: if the 10th FR AMR-WB is 1 (representing the AMR-WB capability with FR), then the FR AMR-WB flag is valid, if the 10-bit FR AMR-WB is 0 (representing the AMR-WB capability without FR), and the identification of the AMR-WB of the FR is invalid.

In an embodiment of the present invention, before the UE informs the SRNC of the AMR capability of the UE to allocate the AMR service to the UE by the CN, specifically before the UE sends the uplink direct transmission message to the SRNC, the establishing The method for adaptive multi-rate voice service further includes:

The UE sends an initial direct transmission message of the RRC protocol (INITIAL DIRECT) TRANSFER) to the SRNC to send an initial user equipment message (INITIAL UE) of the RANAP protocol with the SRNC MESSAGE) to the CN, the initial direct transfer message and the initial user equipment message are used to send connection management to the CN (Connect Management, CM) service request (SERVICE REQUEST) to establish a CM service, the CM service request includes a UE identity, the UE identity is used to specify the UE;

After the CN accepts the CM service request, the CN feeds back a third direct message of the RANAP protocol (DIRECT TRANSFER) to the SRNC to send a downlink direct transmission message to the UE by using the SRNC, where the third direct transmission message and the downlink direct transmission message both include a UE identifier. It should be noted that the “third” included in the “third direct transmission message” is a substitute.

Therefore, a CM service is established between the UE and the CN, and the UE is determined by the UE identifier included in the CM service, so that if the CM service is a charging service, the UE may be charged; preferably, the CM services include call control (CC) services, supplementary service (SSS) services, and short message (SMS) services.

It should be noted that the method for establishing an adaptive multi-rate voice service provided by the embodiment of the present invention is applicable to the network for establishing an adaptive multi-rate voice service provided by the embodiment of the present invention.

FIG. 2 shows a first specific flow of the method for establishing an adaptive multi-rate voice service. For the convenience of description, only parts related to the embodiment of the present invention are shown.

As shown in FIG. 2, the method for establishing an adaptive multi-rate voice service according to the embodiment of the present invention includes: S1, the radio network controller SRNC receives the uplink straight sent by the user equipment UE. Transmitting the message that the non-access stratum NAS message included in the uplink direct transmission message has an effective broadband adaptive multi-rate voice AMR-WB identifier and an effective narrow-band adaptive multi-rate voice AMR-NB identifier; S2, The SRNC performs congestion detection on the resource of the cell where the UE is located; S3, the SRNC sends a first direct transmission message to the core network CN if the resource of the cell where the UE is located is congested, the first direct transmission The message includes a modified NAS message, and the identifier of the AMR-WB in the modified NAS message is modified to be invalid, so that the CN establishes a wireless with the AMR-NB service of the UE by using the SRNC. The access bearer RAB.

Specifically, if the UE supports the AMR-WB service, when the UE wants to establish an AMR-WB service with the designated CN, the identifier of the AMR-WB in the NAS message is set to be valid, and the UE will include the NAS. The uplink direct transmission message of the message is sent to the SRNC; it should be noted that the identifier of the AMR-NB in the NAS message in the uplink direct transmission message is also in a valid state. The SRNC detects the valid AMR-WB identifier from the NAS message included in the received uplink direct transmission message, and immediately performs congestion detection on the resource of the cell in which the UE is located (the resource used to establish the AMR-WB service). If the resources for establishing the AMR-WB service are insufficient (the codeword congestion exists on the resource of the cell), the identifier of the AMR-WB in the NAS message is modified to be invalid, and the AMR-NB in the NAS message is maintained. The identifier is valid; the SRNC generates a first direct transmission message (the first direct transmission message includes the modified NAS message), and sends the first direct transmission message to the CN (the CN specified by the CN identifier); then, the CN When the specified CN receives the first direct transmission message, it can determine, according to the NAS message in the first direct transmission message, that the cell cannot support establishing an AMR-WB service with the UE in the cell, where the CN is in the cell. The UE assigns an AMR-NB service. The specific manner in which the CN assigns the AMR-NB service to the UE is: the CN establishes an RAB of the AMR-NB between the UE and the UE through the SRNC. In this way, the AMR-NB service is established between the UEs and the UE. It is to be noted that, in the method provided by the embodiment of the present invention, the UE that has successfully established the AMR-WB service in the cell can continue to perform the audio signal transmission of the AMR-WB service, and has the AMR-WB capability in the cell. If the UE that is used to establish the AMR-WB service is congested, the CN is identified by the first direct transmission message, and the CN specified by the CN identifier is only new in the cell. The applied UE establishes an AMR-NB service. The UE can ensure that the AMR-WB service in the cell can perform the AMR-WB service audio signal transmission, and effectively improve the success rate of establishing the AMR service for the newly accessed UE.

FIG. 3 shows a second specific flow of the method for establishing an adaptive multi-rate voice service. For the convenience of description, only parts related to the embodiment of the present invention are shown.

In an embodiment of the present invention, as shown in FIG. 3, after the step of the SRNC performing congestion detection on the resource of the cell where the UE is located, the method for establishing an adaptive multi-rate voice service further includes: S4, If the SRNC determines that the resource of the cell where the UE is located is not congested, the second direct transmission message is sent to the CN, and the second direct transmission message includes the NAS message, so that the CN is established by using the SRNC. The radio access of the AMR-WB service of the UE carries the RAB.

Specifically, when a certain UE in the cell wants to establish an AMR-WB service, the UE sends an uplink direct transmission message to the SRNC of the cell, and informs the SRNC of the cell whether the UE has the AMR-WB capability by using the uplink direct transmission message. If the SRNC detects that the identifier of the AMR-WB in the NAS message included in the uplink direct transmission message is valid, the SRNC of the cell detects whether there is congestion in the resource of the cell, if it is determined that the resource of the cell is not congested. (The cell support continues to establish an AMR-WB service for the UE in the cell), and the identifier of the AMR-WB in the NAS message included in the uplink direct transmission message is kept valid, and the NAS message is generated (in the NAS message) The second direct transmission message of the AMR-WB is also valid, and is the same as the NAS message included in the uplink direct transmission message, and sends the second direct transmission message to the CN specified by the CN identifier in the uplink direct transmission message to And the CN that is specified by the CN identifier is used by the SRNC to establish an ABR of the AMR-WB service with the UE that sends the uplink direct transmission message, and establishes the CN specified by the CN identifier and the UE that sends the uplink direct transmission message. AMR-WB service connection

In a preferred embodiment of the present invention, the SRNC performs congestion detection on the resource of the cell where the UE is located, and specifically includes: determining, by the SRNC, whether the codeword table includes an unallocated codeword. It should be noted that the SRNC determines whether there is codeword congestion in the cell by whether the codeword table further includes an unassigned codeword. Specifically, if the UE supports the AMR-WB service, and then the SRNC detects the valid AMR-WB identifier from the NAS message included in the received uplink direct transmission message, determining that the AMR-WB service is established in the cell. Is there any unallocated codeword left in the codeword table?

Correspondingly, the SRNC sends a first direct transmission message to the core network CN, if the resource of the cell in which the UE is located is congested, the first direct transmission message includes a modified NAS message, and the modified NAS The step of modifying the identifier of the AMR-WB in the message to be invalid, so that the CN establishes a radio access bearer RAB with the AMR-NB service of the UE by using the SRNC, and specifically includes: If the SRNC determines that the codewords in the codeword table are all allocated, the SRNC sets the identifier of the AMR-WB in the NAS message to be invalid and sets the identifier of the AMR-NB in the NAS message as Valid, generating a first direct pass message containing the modified NAS message. Specifically, if the codewords included in the codeword table are allocated (representing cell presence codeword congestion), the identifier of the AMR-WB in the NAS message is modified to be invalid, and the identifier of the AMR-NB in the NAS message is maintained. Is valid; the SRNC generates a first direct transmission message (the first direct transmission message includes the modified NAS message); and then, the CN identifier specifies that the CN can receive the first direct transmission message according to the first direct transmission The NAS message in the message determines that the cell cannot support the establishment of an AMR-WB service with the UE in the cell, and the CN specified by the CN identifier assigns an AMR-NB service to the UE in the cell.

Correspondingly, the SRNC sends a second direct transmission message to the CN if the resource of the cell in which the UE is located is not congested, and the second direct transmission message includes the NAS message, so that the CN passes The step of the SRNC establishing a radio access bearer RAB with the AMR-WB service of the UE, the method further includes: if the SRNC determines that the codeword table includes an unassigned codeword, the SRNC generates a second straight The message is sent, and the identifier of the AMR-WB in the NAS message included in the second direct transmission message is valid. Specifically, if there is a remaining codeword in the codeword table (that is, the cell does not have codeword congestion, and can also support establishing AMR-WB service for the UE in the cell), assign a code to the UE that sends the uplink direct transmission message. And generating a second direct transmission message including the NAS message (the identifier of the AMR-NB in the NAS message is set to be valid), and sending the second direct transmission message by the CN specified by the CN identifier in the uplink direct transmission message. The CN specified by the CN identifier is used to establish an ABR of the AMR-WB service with the UE that sends the uplink direct transmission message, and the CN specified by the CN identifier and the UE that sends the uplink direct transmission message are established. AMR-WB service connection between.

It can be seen from the embodiment that the UE that has successfully established the AMR-WB service (the SRNC has allocated the codeword in the codeword table for the UE) can continue the audio signal transmission of the AMR-WB service; A UE with AMR-WB capability in the cell that requests to establish an AMR-WB service, if the codewords in the codeword table used to establish the AMR-WB service in the cell have been allocated, pass the first direct transmission message. The CN is sent to the specified CN, and the specified CN of the CN identifies only the AMR-NB service with the UE in the cell. Therefore, while ensuring that the UE that has established the AMR-WB service in the cell can perform the audio signal transmission of the AMR-WB service normally, the success rate of establishing the AMR service for the newly accessed UE is also effectively improved.

In an embodiment of the present invention, the identifier of the AMR-NB in the NAS message and the modified NAS message includes at least one of the following: AMR-NB of the universal mobile communication system UMTS, AMR-NB of the half rate HR AMR-NB with full rate FR and AMR-NB with 8 phase shift keyed half rate OHR.

In an embodiment of the present invention, the identifier of the AMR-WB in the NAS message and the modified NAS message includes at least one of the following: AMR-WB of UMTS, AMR-WB of FR, AMR-WB of 8 phase shift keying full rate OFR, and AMR-WB of OHR.

It should be noted that the radio network controller provided in this embodiment is applicable to the method for establishing an adaptive multi-rate voice service provided by this embodiment. In addition, the radio network controller provided in this embodiment is applicable to the network for establishing an adaptive multi-rate voice service provided by the embodiment of the present invention. FIG. 4 shows a first component structure of the radio network controller provided by this embodiment. For the convenience of description, only parts related to the embodiment of the present invention are shown.

The radio network controller provided in this embodiment, as shown in FIG. 4, includes:

The receiving unit 31 is configured to receive an uplink direct transmission message sent by the user equipment UE, where the non-access layer NAS message included in the uplink direct transmission message records an effective broadband adaptive multi-rate voice AMR-WB identifier and an effective narrowband Identification of an adaptive multi-rate voice AMR-NB;

The determining unit 32 is configured to perform congestion detection on resources of a cell where the UE is located;

The message sending unit 33 is configured to: if it is determined that the resource of the cell where the UE is located is congested, send a first direct transmission message to the core network CN, where the first direct transmission message includes a modified NAS message, and the modified The identity of the AMR-WB in the NAS message is modified to be invalid, such that the CN establishes a radio access bearer RAB with the AMR-NB service of the UE through the SRNC.

In another embodiment of the present invention, the message sending unit 33 is further configured to: if it is determined that the resource of the cell where the UE is located is not congested, send a second direct transmission message to the CN, where the second direct The message includes the NAS message, such that the CN establishes a radio access bearer RAB with the AMR-WB service of the UE through the SRNC.

In another embodiment of the present invention, the determining unit 32 is specifically configured to: determine whether the codeword table includes unallocated codewords;

The message sending unit 33 is specifically configured to: if the codewords in the codeword table are all allocated, send a first direct transmission message to the core network CN, where the first direct transmission message includes the modified NAS message, The identifier of the AMR-WB in the modified NAS message is modified to be invalid, so that the CN establishes a radio access bearer RAB with the AMR-NB service of the UE through the SRNC;

The message sending unit 33 is further configured to: if the codeword table includes an unassigned codeword, send a second direct transmission message to the CN, where the second direct transmission message includes the NAS message, so that the The CN establishes a radio access bearer RAB with the AMR-WB service of the UE by using the SRNC. .

In another embodiment of the present invention, the identifier of the AMR-NB in the NAS message and the modified NAS message includes at least one of the following: AMR-NB of the universal mobile communication system UMTS, and AMR of the half rate HR. NB, full rate FR AMR-NB and 8 phase shift keyed half rate OHR AMR-NB.

In another embodiment of the present invention, the identifier of the AMR-WB in the NAS message and the modified NAS message includes at least one of the following: AMR-WB of UMTS, AMR-WB of FR, AMR-WB of 8 phase shift keying full rate OFR, and AMR-WB of OHR.

FIG. 5 shows a second component structure of the radio network controller provided by this embodiment. For the convenience of description, only parts related to the embodiment of the present invention are shown.

In another embodiment of the present invention, an apparatus embodiment for implementing the steps and methods in the foregoing method embodiments is further provided. Another embodiment of the present invention is applicable to a terminal, where the terminal is a radio network controller. Figure 5 shows an embodiment of a radio network controller, in which the radio network controller 3 comprises:

A processor 36, a network interface 37, a memory 38 and a bus 39.

The method disclosed in the foregoing embodiments of the present invention may be applied to the processor 36 or implemented by the processor 36. The processor 36 controls the operation of the radio network controller 3, which may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method may be completed by an integrated logic circuit of hardware in the processor 36 or an instruction in the form of software. For performing the method disclosed in the embodiments of the present invention, the foregoing processor 36 may be a central processing unit (central Processing unit, CPU), digital signal processor (DSP), application specific integrated circuit (ASIC), off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware component. The methods, steps, and logical block diagrams disclosed in the embodiments of the present invention may be implemented or carried out. The steps of the method disclosed in the embodiments of the present invention may be directly implemented by the hardware processor 36, or may be performed by a combination of hardware and software in the processor 36. The software may be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory, electrically erasable programmable memory, and registers. The storage medium is located in memory 38, and processor 36 reads the information in memory 38 and, in conjunction with its hardware, performs the steps of the above method.

The network interface 37 refers to an interface having a message receiving function and a transmitting function, and includes a network communication interface of the hardware and a network communication protocol interface of the software. For example, the wireless network controller 3 performs data communication with the core network CN through the Iu interface. Further, the radio network controller 3 receives the uplink direct transmission message (sent by the user equipment UE) through one or more network interfaces 37, and the radio network controller 3 transmits the first direct transmission message through one or more network interfaces 37 (by Core network CN received).

Memory 38 may include read only memory and random access memory and provides instructions and data to processor 36. A portion of memory 38 may also include non-volatile line random access memory (NVRAM). The memory 38 stores the following data: The SRNC receives the uplink direct transmission message sent by the UE, and the NAS message included in the uplink direct transmission message records the identifier of the AMR-WB and the identifier of the AMR-NB; the SRNC detects the NAS message included in the uplink direct transmission message. If the identifier of the AMR-WB is valid, it is determined whether the codeword table contains unallocated codewords; if the codewords in the codeword table are all allocated, the SRNC will use the AMR-WB in the NAS message. The identifier is set to be invalid and the identifier of the AMR-NB in the NAS message is set to be valid; the SRNC generates a first direct transmission message including the modified NAS message, and the CN included with the uplink direct transmission message The CN that identifies the matching sends the first direct transmission message, so that the CN establishes a radio access bearer RAB with the AMR-NB service of the UE through the SRNC.

The various components of the radio network controller 3 are coupled together by a bus 39, wherein the bus 39 includes, in addition to the data bus, a power bus, a control bus, and a status signal bus. However, for clarity of description, various buses are labeled as bus 39 in the figure.

It will also be understood by those skilled in the art that all or part of the functions in the system of the above embodiments can be implemented by a program to instruct related hardware, and the program can be stored in a computer readable storage medium. The storage medium described includes a ROM/RAM, a magnetic disk, an optical disk, and the like.

The above is a further detailed description of the present invention in connection with the specific preferred embodiments, and the specific embodiments of the present invention are not limited to the description. It will be apparent to those skilled in the art that <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; The scope of patent protection as determined by the book.

Claims

A method for establishing an adaptive multi-rate voice service, the method for establishing an adaptive multi-rate voice service includes:

The radio network controller SRNC receives the uplink direct transmission message sent by the user equipment UE, and the non-access stratum NAS message included in the uplink direct transmission message records an effective broadband adaptive multi-rate voice AMR-WB identifier and an effective narrowband self- Adapt to the identification of multi-rate voice AMR-NB;

The SRNC performs congestion detection on resources of a cell where the UE is located;

If the SRNC determines that the resource of the cell where the UE is located is congested, the first direct transmission message is sent to the core network CN, where the first direct transmission message includes the modified NAS message, and the modified NAS message The identity of the AMR-WB is modified to be invalid, such that the CN establishes a radio access bearer RAB with the AMR-NB service of the UE through the SRNC.
The method for establishing an adaptive multi-rate voice service according to claim 1, wherein after the step of the SRNC performing congestion detection on a resource of a cell in which the UE is located, the establishing an adaptive multi-rate voice service The method also includes:

If the SRNC determines that the resource of the cell where the UE is located is not congested, the second direct transmission message is sent to the CN, and the second direct transmission message includes the NAS message, so that the CN passes the SRNC. Establishing a radio access bearer RAB with the AMR-WB service of the UE.
The method for establishing an adaptive multi-rate voice service according to claim 1 or 2, wherein the SRNC performs congestion detection on a resource of a cell in which the UE is located, and specifically includes:

Determining, by the SRNC, whether the codeword table contains unallocated codewords;

If the SRNC determines that the resource of the cell where the UE is located is congested, the first direct transmission message is sent to the core network CN, where the first direct transmission message includes the modified NAS message, and the modified NAS message The step of modifying the identifier of the AMR-WB to be invalid, so that the CN establishes a radio access bearer RAB with the AMR-NB service of the UE by using the SRNC, and specifically includes:

If the SRNC determines that the codewords in the codeword table have been allocated, the SRNC sets the identifier of the AMR-WB in the NAS message to be invalid and the identifier of the AMR-NB in the NAS message. Set to be valid, generate a first direct transmission message containing the modified NAS message;

If the SRNC determines that the resource of the cell where the UE is located is not congested, the second direct transmission message is sent to the CN, and the second direct transmission message includes the NAS message, so that the CN passes the SRNC. The step of establishing a radio access bearer RAB with the AMR-WB service of the UE further includes:

If the SRNC determines that the codeword table includes an unassigned codeword, the SRNC generates a second direct transmission message, and the identifier of the AMR-WB in the NAS message included in the second direct transmission message is valid.
The method for establishing an adaptive multi-rate voice service according to claim 1, wherein the identifier of the AMR-NB in the NAS message and the modified NAS message comprises at least one of the following: a universal mobile communication system AMR-NB of UMTS, AMR-NB of half rate HR, AMR-NB of full rate FR, and AMR-NB of 8 phase shift keying half rate OHR.
The method for establishing an adaptive multi-rate voice service according to claim 1, wherein the identifier of the AMR-WB in the NAS message and the modified NAS message comprises at least one of the following: AMR-WB of UMTS, AMR-WB of FR, AMR-WB of 8 phase shift keying full rate OFR, and AMR-WB of OHR.
A radio network controller, characterized in that the radio network controller comprises:

a receiving unit, configured to receive an uplink direct transmission message sent by the user equipment UE, where the non-access layer NAS message included in the uplink direct transmission message records an effective broadband adaptive multi-rate voice AMR-WB identifier and an effective narrowband self- Adapt to the identification of multi-rate voice AMR-NB;

a determining unit, configured to perform congestion detection on resources of a cell where the UE is located;

a message sending unit, configured to send a first direct transmission message to the core network CN, if the resource of the cell where the UE is located is congested, where the first direct transmission message includes a modified NAS message, and the modified NAS The identity of the AMR-WB in the message is modified to be invalid, such that the CN establishes a radio access bearer RAB with the AMR-NB service of the UE through the SRNC.
The radio network controller according to claim 6, wherein the message sending unit is further configured to:

If it is determined that the resource of the cell where the UE is located is not congested, sending a second direct transmission message to the CN, where the second direct transmission message includes the NAS message, so that the CN establishes and cooperates with the SRNC. The radio access bearer RAB of the AMR-WB service of the UE.
The network for establishing an adaptive multi-rate voice service according to claim 6 or 7, wherein the determining unit is specifically configured to:

Determining whether the codeword table contains unallocated codewords;

The message sending unit is specifically configured to:

If the codewords in the codeword table are all allocated, send a first direct transmission message to the core network CN, where the first direct transmission message includes a modified NAS message, and the modified NAS message The identifier of the AMR-WB is modified to be invalid, so that the CN establishes a radio access bearer RAB with the AMR-NB service of the UE through the SRNC;

The message sending unit is further configured to:

If the codeword table includes an unallocated codeword, send a second direct message to the CN, the second direct message including the NAS message, so that the CN establishes with the UE through the SRNC The radio access of the AMR-WB service carries the RAB.
The network for establishing an adaptive multi-rate voice service according to claim 6, wherein the identifier of the AMR-NB in the NAS message and the modified NAS message comprises at least one of the following: a universal mobile communication system AMR-NB of UMTS, AMR-NB of half rate HR, AMR-NB of full rate FR, and AMR-NB of 8 phase shift keying half rate OHR.
The network for establishing an adaptive multi-rate voice service according to claim 6, wherein the identifier of the AMR-WB in the NAS message and the modified NAS message includes at least one of the following: AMR-WB of UMTS, AMR-WB of FR, AMR-WB of 8 phase shift keying full rate OFR, and AMR-WB of OHR.
A network for establishing an adaptive multi-rate voice service, wherein the network for establishing an adaptive multi-rate voice service comprises: a user equipment UE, a radio network controller SRNC, and a core network CN;

The UE is configured to send an uplink direct transmission message to the SRNC, where the uplink direct transmission message includes a non-access stratum NAS message and a core network CN identifier, and the NAS message included in the uplink direct transmission message records an effective broadband Identification of an adaptive multi-rate voice AMR-WB and identification of an effective narrowband adaptive multi-rate voice AMR-NB;

The SRNC is configured to perform congestion detection on a resource of a cell where the UE is located, and if it is determined that the resource of the cell where the UE is located is congested, send a first direct transmission message to the core network CN, where the first direct transmission message is sent. Including the modified NAS message, the identifier of the AMR-WB in the modified NAS message is modified to be invalid;

The CN is configured to receive the first direct transmission message sent by the SRNC, and establish, by using the SRNC, a radio access bearer RAB that is related to the AMR-NB service of the UE.
A network for establishing an adaptive multi-rate voice service according to claim 11, wherein:

The SRNC is further configured to: if it is determined that the resource of the cell where the UE is located is not congested, send a second direct transmission message to the CN, where the second direct transmission message includes the NAS message;

The CN is further configured to receive the second direct transmission message sent by the SRNC, and establish, by using the SRNC, a radio access bearer RAB that is related to the AMR-WB service of the UE.
A network for establishing an adaptive multi-rate voice service according to claim 12, wherein

The SRNC is further configured to: when detecting that the identifier of the AMR-WB in the NAS message included in the uplink direct transmission message is valid, determining whether the codeword table includes an unassigned codeword, and also if the codeword is used. If the codewords in the table are all allocated, the identifier of the AMR-WB in the NAS message is invalidated and the identifier of the AMR-NB in the NAS message is valid, and the modified NAS message is generated. The first message is further used to generate a second direct transmission message if the codeword table includes an unallocated codeword, and the identifier of the AMR-WB in the NAS message included in the second direct transmission message is valid.
The network for establishing an adaptive multi-rate voice service according to claim 11, wherein the identifier of the AMR-NB in the NAS message and the modified NAS message comprises at least one of the following: a universal mobile communication system AMR-NB of UMTS, AMR-NB of half rate HR, AMR-NB of full rate FR, and AMR-NB of 8 phase shift keying half rate OHR.
The network for establishing an adaptive multi-rate voice service according to any one of claims 11 to 14, wherein the identifier of the AMR-WB in the NAS message and the modified NAS message includes at least one of the following: AMR-WB of UMTS, AMR-WB of FR, AMR-WB of 8 phase shift keying full rate OFR, and AMR-WB of OHR.
A radio network controller, comprising: a processor, a network interface, a memory, and a bus, wherein the processor, the network, and the memory are coupled together by the bus, wherein

The processor controls the operation of the radio network controller to implement the method of any one of claims 1 to 5, the steps of the method being completed by an integrated logic circuit of the hardware in the processor or an instruction in the form of software ;

The network interface is an interface having a receiving function and a sending function, and includes a network communication interface of the hardware and a network communication protocol interface of the software;

The memory stores software executed by the processor to provide instructions and data to the processor.