WO2010017767A1

WO2010017767A1 - Method, device and system for requesting radio link establishment

Info

Publication number: WO2010017767A1
Application number: PCT/CN2009/073207
Authority: WO
Inventors: 高永强; 郑潇潇; 陈燕燕; 于江; 闫坤; 徐敏
Original assignee: 华为技术有限公司
Priority date: 2008-08-12
Filing date: 2009-08-12
Publication date: 2010-02-18
Also published as: CN101651909A; CN101651909B

Abstract

The present invention provides a method, a device and a system for requesting radio link establishment. Said method includes: serving radio network controller (SRNC) obtains the capability information of the target cell dominated by drift radio network controller (DRNC) beforehand, and the capability information of the target cell represents whether the target cell supports the characteristic of uplink layer 2 enhancement; then the SRNC configures the cell representing the length information of Medium Access Control-d Protocol Data Unit (MAC-d PDU) in radio link establishing request according to the capability information of the target cell and initiates the radio link establishing request.

Description

Request method, device and system for establishing a wireless link. The present application claims a Chinese patent application filed on August 12, 2008, with the application number 200810210688.0, entitled "Request Method, Equipment and System for Establishing a Wireless Link" Priority is hereby incorporated by reference in its entirety.

Technical field

The present invention relates to the field of communications, and in particular, to a method, device, and system for requesting radio link establishment.

Background technique

The process of establishing a wireless link is to allocate necessary resources for one or more wireless links in a Drift Radio Network Sub-system (DRNS) and establish a connection-oriented signaling bearer.

The establishment of the wireless link is implemented by the following processes:

When the SRNC (Serving Radio Network Controller) decides to add the first or first batch of cells of a DRNS to the specified connection activation set, it will go to the corresponding DRNC (Drif Radio Network Controller, The drift radio network controller sends a radio link setup request message to request to establish a radio link.

As shown in Figure 1, after receiving the above radio link setup request message, the DRNC allocates the resources of the radio link request for each wireless link. After all radio links are successfully established, the DRNC sends a radio link setup response message to the SRNC. As shown in Figure 2, if the DRNC cannot successfully establish one or more of the wireless links, the DRNC returns a radio link setup failure message to the SRNC, indicating the reason for the failure.

At present, in the process of establishing a wireless link, the uplink data transmission uses a medium-length MAC-d PDU (Medium Access Control-d Protocol Data Unit).

The R8 version of the 3GPP protocol introduces the new feature of Upstream Layer 2 enhancement. In order to be more comfortable The MAC (Medium Access Control) layer entity parameter is configured in a physical manner, and the radio link establishment based on the enhancement feature of the uplink layer 2 adopts a variable length MAC-d PDU.

Under the feature of the uplink layer 2 enhancement, when the SRNC sends a radio link setup request message to the DRNC, the radio link setup request message includes the maximum MAC-d PDU length for indicating the length of the variable MAC-d PDU. Extended cells, and MAC-d PDU length cells used to describe the length of the fixed MAC-d PDU. The DRNC receives the radio link setup request message, and if the DRNC detects that the radio link setup request message includes the largest MAC-d PDU length extension cell, the DRNC ignores the MAC included in the radio link setup request message. d PDU length cell.

In the process of realizing the establishment of the radio link under the above-mentioned enhancement feature of the uplink layer 2, the inventors have found that at least the following problems exist in the prior art:

In the case that the SRNC supports the uplink layer 2 enhancement feature and the target cell managed by the DRNC does not support the uplink layer 2 enhancement feature, the DRNC ignores the largest MAC-d PDU length extension cell after receiving the radio link setup request message. The MAC-d PDU length cell is parsed, and the MAC-d PDU length cell is empty, so that the DRNC cannot correctly configure the layer 2 protocol entity, and then returns a radio link setup failure message to the SRNC, thereby causing The wireless link setup failed. Summary of the invention

Embodiments of the present invention provide a method, device, and system for requesting radio link establishment, which can improve the success rate of radio link establishment under the enhancement feature of the uplink layer 2.

The method for requesting the establishment of the radio link provided by the embodiment of the present invention includes: receiving target cell capability information sent by the drift radio network controller, where the target cell capability information indicates whether the target cell supports the uplink layer 2 enhancement feature; The target cell capability information configures a cell indicating MAC-d PDU length information in the radio link setup request; and sends the radio link setup request to the drift radio network controller.

The service radio network controller provided by the embodiment of the present invention includes: a receiving unit, configured to receive target cell capability information sent by a drift radio network controller, where the target cell capability information indicates whether the target cell supports an uplink layer 2 enhancement feature. a configuration unit for small according to the target The zone capability information configures a cell indicating a MAC-d PDU length information in the radio link setup request; and a sending unit, configured to send a radio link setup request to the drift radio network controller.

The radio link establishing system provided by the embodiment of the present invention includes a serving radio network controller and a drift radio network controller, where the serving radio network controller is configured to receive target cell capability information sent by the drift radio network controller, according to The target cell capability information determines whether the target cell supports the uplink layer 2 enhancement feature, and then configures parameters according to whether the target cell supports the uplink layer 2 enhancement feature, and sends a radio link establishment to the drift radio network controller. request.

The method for establishing a radio link according to an embodiment of the present invention includes: a drift radio network controller receives a radio link setup request sent by a serving radio network controller; and after the user terminal successfully establishes a radio link, the drift radio network controller Returning, to the foregoing serving radio network controller, a radio link setup response, where the radio link setup response carries capability information of a neighboring cell of a cell that successfully establishes a radio link with the user terminal, where the capability information of the neighbor cell indicates the neighbor Whether the cell supports the uplink layer 2 enhancement feature.

The method, device, and system for requesting the establishment of the radio link provided by the embodiment of the present invention enable the SRNC to pre-acquire whether the target cell supports the enhanced capability information of the uplink layer 2, configure the parameters according to the capabilities of the target cell, and then send the target to the DRNC. The radio link establishment request message matching the cell capability establishes a radio link, thereby avoiding the failure of the radio link establishment caused by the target cell of the DRNC not supporting the enhancement of the uplink layer 2 due to the support of the uplink layer 2 enhancement feature of the SRNC. In this case, the success rate of the establishment of the radio link under the enhancement feature of the uplink layer 2 is improved.

DRAWINGS

1 is a schematic diagram of a process of successfully establishing a wireless link in the prior art;

2 is a schematic diagram of a process of establishing a radio link failure in the prior art;

3 is a flowchart of a method for requesting establishment of a radio link according to Embodiment 1 of the present invention;

4 is a schematic structural diagram of a service radio network controller according to Embodiment 1 of the present invention;

5 is a flowchart of a method for establishing a wireless link according to Embodiment 2 of the present invention;

6 is a schematic structural diagram of a service radio network controller according to Embodiment 2 of the present invention; 7 is a flowchart of a method for establishing a wireless link according to Embodiment 3 of the present invention;

8 is a schematic structural diagram of a service radio network controller according to Embodiment 3 of the present invention;

FIG. 9 is a schematic structural diagram of a wireless link establishing system according to Embodiment 4 of the present invention.

detailed description

In order to improve the success rate of radio link establishment under the enhancement of the uplink layer 2, embodiments of the present invention provide a method, device and system for requesting radio link establishment. The method, device and system for requesting radio link establishment provided by the embodiments of the present invention are described in detail below with reference to the accompanying drawings.

Embodiment 1:

As shown in FIG. 3, the method for requesting establishment of a radio link according to an embodiment of the present invention includes the following steps:

Step 31: The SRNC receives the target cell capability information sent by the DRNC, where the target cell is a cell that is to establish a radio link with the user terminal, and the target cell capability information may indicate whether the target cell supports the uplink layer 2 enhanced feature.

Step 32: The SRNC configures, according to the target cell capability information, a cell that indicates MAC-d PDU length information in the radio link setup request.

Step 33: The SRNC sends a radio link setup request to the DRNC.

Corresponding to the request method for establishing a radio link provided by this embodiment, an embodiment of the present invention further provides a service radio network controller.

As shown in FIG. 4, the serving radio network controller provided by the embodiment of the present invention includes a receiving unit 41, a configuration unit 42, and a sending unit 43.

The receiving unit 41 receives the target cell capability information sent by the DRNC, where the target cell capability information indicates whether the target cell supports the uplink layer 2 enhanced feature, and then the configuration unit 42 configures the wireless link establishment according to the target cell capability information. A cell indicating MAC-d PDU length information in the request, and then the transmitting unit 43 transmits a radio link establishment request to the DRNC.

The request method and device for establishing a radio link according to the embodiment of the present invention enable the SRNC to obtain in advance whether the target cell supports the capability information of the uplink layer 2 enhancement, according to the capability of the target cell. Configuring a cell indicating a MAC-d PDU length information in the radio link setup request, and then transmitting a radio link setup request matching the target cell capability to the DRNC, avoiding the DRNC being governed by the SRNC supporting the uplink layer 2 enhancement feature The target cell does not support the uplink layer 2 enhancement feature and the radio link establishment fails.

Embodiment 2:

As shown in FIG. 5, the method for establishing a radio link according to an embodiment of the present invention includes: Step 51: The SRNC sends an information exchange request message to the DRNC, requesting the DRNC to return a target cell capability indicating whether the target cell supports the enhanced layer 2 enhancement feature. Information, wherein the target cell is a cell that is to establish a radio link with a user terminal.

Step 52: The DRNC feeds back the information exchange response message to the SRNC, and reports the target cell capability information to the SRNC.

Step 53: The SRNC determines, according to the target cell capability information, whether the target cell supports the uplink layer 2 enhanced feature.

If the target cell does not support the uplink layer 2 enhancement feature, steps 54, 56, and 57 are performed; if the target cell supports the uplink layer 2 enhancement feature, steps 55, 56, and 57 are performed.

Step 54: The SRNC sends a radio link setup request to the DRNC, where the radio link setup request includes a MAC-d PDU length cell, and does not include a maximum MAC-d PDU length extension cell.

Step 55: The SRNC sends a radio link setup request to the DRNC, where the radio link setup request includes a maximum MAC-d PDU length extension cell.

Step 56: After receiving the radio link setup request, the DRNC performs configuration of the layer 2 protocol entity according to the MAC-d PDU length information in the radio link setup request to establish a radio link.

Step 57: The DRNC returns a radio link setup response message to the SRNC.

When the user terminal needs to establish a radio link with the new target cell, the SRNC will initiate a request to the DRNC again, and request the capability information of the new target cell, in order to simplify the process and improve the next radio link establishment. The success rate, the foregoing radio link setup response message may further carry capability information of a neighboring cell of a cell that currently successfully establishes a radio link with the user terminal. Preferably, the foregoing radio link setup response message carries the capability information of the neighboring cell of the cell that successfully establishes the radio link with the user terminal by using the following manner:

Adjacent cell information is fed back in the radio link setup response message. For example: the neighbor cell information is included in a "Neighbouring FDD Cell Information" cell, and a "Cell Capability Container FDD" cell of the cell is added to indicate whether the cell supports the enhancement feature of the uplink layer 2" Supporting a variable length E-DCH (Enhanced Dedicated Channel) MAC-d PDU indication", the radio link setup response message carries a cell that can indicate whether the cell supports the capability information of the uplink layer 2 enhancement feature, thereby The ability of the neighboring cell to support the uplink layer 2 enhancement feature can be fed back to the SRNC.

As shown in FIG. 6, the serving radio network controller provided by the embodiment of the present invention includes: a receiving unit 61, a configuration unit 62, and a sending unit 63.

The sending unit 63 sends an information exchange request message to the DRNC, where the message includes: requesting the DRNC to return a cell indicating whether the target cell supports the cell capability information of the uplink layer 2 enhanced characteristic; the receiving unit 61 receives the target cell capability information fed back by the DRNC, and then the configuration unit And determining, according to the target cell capability information, whether the target cell supports the uplink layer 2 enhanced characteristic, and configuring, according to the target cell capability information, a cell that indicates MAC-d PDU length information in the radio link setup request, and the sending unit 63 A radio link setup request is sent to the DRNC. Specifically, if the target cell does not support the uplink layer 2 enhanced feature, the radio link setup request includes a MAC-d PDU length cell, and does not include a maximum MAC-d PDU length extension cell; if the target The cell supports the uplink layer 2 enhancement feature, and the radio link setup request includes the largest MAC-d PDU length extension cell.

The request method and device for establishing a radio link according to an embodiment of the present invention, before the establishment of the radio link, the SRNC actively requests the capability information of whether the target cell supports the enhancement feature of the uplink layer 2, and then the SRNC according to the target cell Ability information reasonable configuration parameters, such that DRNC The received radio link setup request can match the target cell capability, avoiding the cause

The SRNC supports the uplink layer 2 enhancement feature and the target cell does not support the uplink layer 2 enhancement feature and the wireless link setup fails.

Embodiment 3:

In this embodiment, after the radio link is successfully established, the DRNC actively sends the capability information of the uplink layer 2 enhanced feature to the adjacent cell of the cell that successfully establishes the radio link with the user terminal on the SRNC, and the user terminal is in the adjacent cell. One cell serves as a target cell to establish a wireless link. As shown in FIG. 7, a method for establishing a wireless link according to an embodiment of the present invention includes:

Step 71: The SRNC receives the cell capability information sent by the DRNC, where the capability information of the target cell (that is, the capability information of the neighboring cell), that is, the capability information of the cell that is to establish a wireless link with the user terminal.

Step 72: The SRNC determines, according to the capability information of the target cell, whether the target cell supports the uplink layer enhancement feature. If the target cell does not support the uplink layer 2 enhancement feature, steps 73, 75, and 76 are performed; if the target cell supports the uplink layer 2 enhancement feature, steps 74, 75, and 76 are performed.

Step 73: When the user terminal is to establish a radio link with the target cell, the SRNC sends a radio link setup request to the DRNC, where the radio link setup request includes the MAC-d PDU length cell, and does not include the maximum MAC-d. PDU length extension cell.

Step 74: When the user terminal is to establish a radio link with the target cell, the SRNC sends a radio link setup request to the DRNC, where the radio link setup request includes a maximum MAC-d PDU length extension cell.

Step 75: After receiving the radio link setup request, the DRNC allocates resources to the target cell according to the requirements in the radio link setup request, and establishes a radio link.

Step 76: The DRNC returns a radio link setup response message to the SRNC, where the capability information of the neighboring cell of the target cell is carried.

Preferably, the foregoing radio link setup response message carries the capability of the neighboring cell of the target cell The implementation of the force information is the same as that described in the second embodiment, and is not mentioned here.

As shown in FIG. 8, the serving radio network controller provided by the embodiment of the present invention includes: a receiving unit 81, a configuration unit 82, and a sending unit 83.

The receiving unit 81 receives the capability information of the neighboring cell of the cell that successfully establishes the radio link with the user terminal, and the cell capability information indicates whether the cell supports the uplink layer enhancement feature, and then the configuration unit 82 determines the location. Whether the neighboring cell supports the uplink layer 2 enhancement feature, when the user terminal establishes a radio link by using one of the neighboring cells as the target cell, the sending unit 83 sends a radio link establishment request to the DRNC.

Specifically, if the neighboring cell does not support the uplink layer 2 enhanced feature, the radio link setup request includes a MAC-d PDU length cell, and does not include a maximum MAC-d PDU length extension cell; if the neighboring target cell Supporting the uplink layer 2 enhancement feature, the radio link setup request includes the largest MAC-d PDU length extension cell.

The method and device for requesting the establishment of the radio link provided by the embodiment of the present invention, after the radio link is successfully established, the DRNC actively sends the uplink cell to the adjacent cell of the cell that successfully establishes the radio link with the user terminal on the SRNC. The capability information of the enhanced feature, when the user terminal determines to establish a radio link with the neighboring cell, the cell indicating the MAC-d PDU length information in the radio link setup request may be reasonably configured according to the capability information of the neighboring cell. In this way, the radio link setup request received by the DRNC can match the capability of the neighboring cell, and the radio link establishment caused by the adjacent cell does not support the enhancement of the uplink layer 2 due to the support of the uplink layer 2 enhancement feature of the SRNC is avoided. After the radio link between the user terminal and the neighboring cell is successfully established, the neighboring cell becomes the cell where the user terminal is currently located, and the DRNC returns to the SRNC the cell that successfully establishes the radio link with the user terminal. The capability information of the neighboring cell, further, can improve the next wireless chain Establish success rate.

The above-mentioned wireless link establishment response message feedback currently successfully establishes a wireless link with the user terminal. The method of capability information of the neighboring cells of the cell is applicable to, but not limited to, the case mentioned in the above embodiment. As long as the radio link is successfully established, the DRNC can feedback the capability information of the neighboring cell of the cell that successfully establishes the radio link with the user terminal through the radio link establishment response.

For example, if the SRNC sends a radio link setup request to the DRNC, but the radio link fails to be established normally, the DRNC feeds back the radio link setup failure message to the SRNC; after the SRNC adjusts the parameters, it sends a radio link setup request to the DRNC again; once the radio After the link is successfully established, the DRNC needs to feed back the radio link establishment response to the SRNC, which can carry the capability information of the neighboring cell of the cell that successfully establishes the radio link with the user terminal.

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 foregoing steps include the steps of the foregoing method embodiments; 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.

Embodiment 4:

As shown in FIG. 9, the wireless link establishing system provided by the embodiment of the present invention includes a serving wireless network controller 91 and a drift wireless network controller 92. The service radio network controller 91 further includes: a receiving unit, a configuration unit, and a sending unit.

The serving radio network controller 91 receives the target cell capability information sent by the drift radio network controller 92, determines whether the target cell supports the uplink layer 2 enhancement characteristic according to the target cell capability information, and configures the radio according to the target cell capability information. The cell representing the MAC-d PDU length information in the link setup request is then sent to the drift radio network controller 92 for the radio link setup request.

Specifically, if the target cell does not support the uplink layer 2 enhanced feature, the radio link setup request includes a MAC-d PDU length cell, and does not include a maximum MAC-d PDU length extension cell; if the target cell supports The uplink layer 2 enhancement feature includes the largest MAC-d PDU length extension cell in the radio link setup request. If the SRNC determines the target cell to establish a radio link with the user terminal, the serving radio network controller 91 may also send an information exchange request message to the drift radio network controller 92, including the requesting DRNC return, before establishing the radio link. Describe whether the target cell supports the cell capability information of the uplink layer 2 enhanced feature; after that, the drift radio network controller 92 feeds back the information exchange response message to the serving radio network controller 91, which includes indicating whether the target cell supports the uplink layer 2 enhancement. Characteristic cell capability information.

In the radio link establishing system provided by the embodiment of the present invention, the serving radio network controller 91 obtains the capability information of the uplink layer 2 enhanced by the target cell in advance, and appropriately configures parameters according to the capability of the target cell, and then sends the parameter to the drift radio network controller 92. Transmitting a radio link setup request that matches the capability of the target cell avoids the fact that the serving radio network controller 91 supports the uplink layer 2 enhancement feature and the target cell under the jurisdiction of the radio network controller 92 does not support the enhancement of the uplink layer 2 The case where the wireless link establishment fails.

The method, device, and system for requesting the establishment of the radio link provided in the foregoing embodiments are applicable not only to the case where the user terminal needs to establish a new radio link to move to the target cell, but also to the poor cell signal of the current location of the user terminal. The user terminal needs to establish a new wireless link. The method, device, and system for requesting the establishment of the wireless link provided by the embodiment of the present invention are not limited to the above two situations, as long as the uplink layer 2 is enhanced. The characteristic wireless link establishment process can be applied to the request method, device and system of the wireless link establishment provided by the present invention.

The above is only the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any change or replacement that can be easily conceived by those skilled in the art within the technical scope of the present invention is All should be covered by the scope of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

Claim

A method for requesting establishment of a wireless link, comprising:

Receiving target cell capability information sent by the drift radio network controller, where the target cell capability information indicates whether the target cell supports the uplink layer 2 enhancement feature;

And configuring, according to the target cell capability information, a cell indicating a media access control-d protocol data unit MAC-d PDU length information in the radio link setup request;

The wireless link setup request is sent to the drift radio network controller.

The method for requesting radio link establishment according to claim 1, wherein: if the target cell does not support the uplink layer 2 enhancement feature, the radio link setup request includes a MAC-d PDU length cell. And does not include the largest MAC-d PDU length extension cell;

If the target cell supports the uplink layer 2 enhancement feature, the radio link setup request includes the largest MAC-d PDU length extension cell.

The method for requesting radio link establishment according to claim 1, wherein: before receiving the target cell capability information sent by the drift radio network controller, the method further includes: sending, to the drift radio network controller An information exchange request, the information exchange request containing cells requesting the drift radio network controller to return the target cell capability information.

The method for requesting the establishment of a wireless link according to claim 1, wherein the method further comprises:

Receiving a radio link setup response returned by the drift radio network controller.

The method for requesting radio link establishment according to claim 4, wherein the radio link setup response includes capability information of a cell adjacent to the target cell.

The method for requesting radio link establishment according to claim 5, wherein: the capability information of the cell adjacent to the target cell includes a frequency division duplex adjacent cell information cell, the letter The element contains an E-DCH MAC-d PDU indication that supports variable length.

7. A service radio network controller, comprising:

a receiving unit, configured to receive target cell capability information sent by the drift radio network controller, where The target cell capability information indicates whether the target cell supports the uplink layer 2 enhanced feature, and the configuration unit is configured to configure the wireless link setup request according to the target cell capability information.

Cell of MAC-d PDU length information; and

And a sending unit, configured to send a radio link setup request to the drift radio network controller.

8. The service radio network controller according to claim 7, wherein:

If the target cell does not support the uplink layer 2 enhanced feature, the wireless link setup request sent by the sending unit includes a MAC-d PDU length cell, and does not include a maximum MAC-d PDU length extension cell;

And if the target cell supports the uplink layer 2 enhanced feature, the wireless link setup request sent by the sending unit includes a maximum MAC-d PDU length extension cell.

9. The service radio network controller according to claim 7, wherein:

The sending unit is further configured to send an information exchange request to the drift radio network controller, where the information exchange request includes a cell that requires the drift radio network controller to return target cell capability information.

10. The service radio network controller according to claim 7, wherein:

The receiving unit is further configured to receive a radio link setup response returned by the drift radio network controller.

A wireless link establishing system, comprising: a service radio network controller and a drift radio network controller;

The serving radio network controller is configured to receive the target cell capability information sent by the drift radio network controller, where the target cell capability information indicates whether the target cell supports the uplink layer 2 enhanced feature, and is configured according to the target cell capability information. A cell indicating MAC-d PDU length information in the radio link setup request, and transmitting a radio link setup request to the drift radio network controller.

12. The wireless link establishing system according to claim 11, wherein:

If the target cell does not support the uplink layer 2 enhancement feature, the radio link establishment request sent by the serving radio network controller to the drift radio network controller includes a MAC-d PDU length cell, and does not include Maximum MAC-d PDU length extension cell; And if the target cell supports the uplink layer 2 enhanced feature, the radio link establishment request sent by the serving radio network controller to the drift radio network controller includes a maximum MAC-d PDU length extension cell.

13. The wireless link establishing system according to claim 11, wherein:

The serving radio network controller is further configured to send an information exchange request to the drift radio network controller, the information exchange request including a cell requesting the drift radio network controller to return the target cell capability information.

14. The wireless link establishing system according to claim 11, wherein:

The serving radio network controller is further configured to receive a radio link setup response returned by the drift radio network controller.

A method for establishing a wireless link, comprising:

The drift radio network controller receives a radio link setup request sent by the serving radio network controller, and after the user terminal successfully establishes the radio link, the drift radio network controller returns a radio link setup response to the serving radio network controller. The radio link setup response carries capability information of a neighboring cell of a cell that successfully establishes a radio link with the user terminal, and the capability information of the neighbor cell indicates whether the neighbor cell supports the uplink layer 2 enhancement feature.

16. The method of establishing a wireless link according to claim 15, wherein:

The capability information of the neighboring cell includes an enhanced dedicated channel medium access control-d protocol data unit E-DCH MAC-d PDU indication supporting variable length.