WO2010124432A1

WO2010124432A1 - Random wireless access method, equipment and system

Info

Publication number: WO2010124432A1
Application number: PCT/CN2009/071481
Authority: WO
Inventors: 黄英
Original assignee: 华为技术有限公司
Priority date: 2009-04-27
Filing date: 2009-04-27
Publication date: 2010-11-04
Also published as: CN102550113A

Abstract

A random wireless access method, an equipment and a system are provided. The random wireless access method includes: obtaining random wireless access parameters of an adjacent cell; in the non-switching stage, transmitting a wireless resource control message to the user terminal, the wireless resource control message containing the random wireless access parameters of the adjacent cell.

Description

Random wireless access method, device and system

Technical field

The present invention relates to the field of mobile communication technologies, and in particular, to a random wireless access method, device and system. Background technique

In the mobile communication system, for the continuity of the service or the solution of the coverage problem, in general, the different system cell or the inter-frequency cell may cover the network. For example, the Universal Mobile Telecommunications System (UMTS) cell and the Long Term Evolution (LTE) cell jointly cover the same area.

During the operation of the mobile network, sometimes the cell suddenly fails, such as when the cell suddenly breaks down or suddenly loses power, and the cell does not work normally. For the user, a Radio Link Failure (RLF) is detected, and then a new cell is reselected and the reconnection process of the radio link is initiated.

After the user reselects to the new cell, synchronization is performed before starting communication with the network. This process is implemented by a Random Access Channel (RACH). Before performing the random access procedure, the following information is obtained: the available random access channel (PRACH) resource, and the feedback random access response message corresponding to the PRACH resource (RA-RNTI, Random Access - Radio) Network Temporary Identifier Preamble group, preamble ID available in each preamble group, threshold conditions for selecting preamble group, parameters for calculating message 2 (Msg2) latency window, The power boost step (POWER-RAMP-STEP), the maximum number of times the user accesses the wireless access channel (PHIMBBLE- TRANS-MAX), and the initial power. The above information is sent to the user through information broadcast. Said that the user should read the system broadcast message before random wireless access, and the reading system is wide. Broadcasting takes extra time. In order to reduce the communication interruption time and the packet loss rate, it is necessary to quickly complete the process of random wireless access between the user and the new cell.

The existing method for accelerating random access is to bring the random radio access channel information of the target cell to the user through the wireless configuration information at the time of handover, and after the user arrives at the target cell, directly perform random wireless access, and does not need to go again. Read system broadcast messages and do not require competitive access. However, when the original cell suddenly fails, the new cell cannot be notified beforehand, the new cell will not prepare resources for the user, and the radio link of the original cell fails, and the user does not receive the evolved base station (eNB, eNodeB). Send a message. Therefore, the method cannot quickly complete random wireless access of the user and the new cell in case the sudden failure of the original cell occurs. Summary of the invention

An embodiment of the present invention provides a random radio access method, including: acquiring a random radio access parameter of a neighboring cell; and transmitting, in a non-handover phase, a radio resource control message to the user equipment, where the radio resource control message includes the neighboring cell Random wireless access parameters.

The embodiment of the present invention further provides a random radio access device, including: a receiving module, configured to acquire a random radio access parameter of a neighboring cell; and a sending module, configured to send a radio resource control message to the user terminal, where the radio resource control The message includes random radio access parameters of the neighboring cells.

The embodiment of the present invention further provides a random radio access system, including the foregoing random radio access device and user terminal, where the user terminal is configured to receive the radio resource control that is sent by the random radio access device in a non-handover phase. The message is used to obtain the random radio access parameter of the neighboring cell, and perform random radio access to the neighboring cell according to the random radio access parameter.

With the foregoing technical solution provided by the embodiment of the present invention, when a cell failure occurs suddenly, the user terminal can quickly access the neighboring cell by using the random radio access parameter of the neighboring cell, improve the speed and success rate of the random wireless access, and reduce the communication. Interrupt time and packet loss rate. DRAWINGS The drawings described herein are provided to provide a further understanding of the invention, and are not intended to limit the invention. In the drawing:

1 is a flowchart of a random radio access method according to Embodiment 1 of the present invention;

2 is a structural diagram of a random wireless access device according to Embodiment 2 of the present invention;

3 is a structural diagram of a random wireless access system according to Embodiment 3 of the present invention;

4 is a schematic diagram of random wireless access of neighboring cells of the same base station according to the present invention;

FIG. 5 is a schematic diagram of random wireless access of neighboring cells of different base stations according to the present invention. detailed description

The embodiments of the present invention will be further described in detail below with reference to the embodiments and the accompanying drawings. The illustrative embodiments of the invention and the description thereof are intended to be illustrative of the invention, and are not intended to limit the invention.

This embodiment provides a random radio access method. The random wireless access method will be described in detail below with reference to FIG. 1, which includes:

Step S110: Acquire random radio access parameters of the neighboring cell.

This step is performed by the access network device, in the LTE system, by the eNB, and in the UMTS/GSM system, by the RNC/BSC. In the LTE system, in this step, the eNB receives random radio access parameters from neighboring cells through the X2/S1 interface. In the LTE system, the eNB receives the random radio access parameter through the X2/S1 interface, as shown in the LTE system in FIG. 4; between different network systems, between the LTE system and the UMTS/GSM system shown in FIG. The random radio access parameter is received through the S1 interface, and the step is performed by the eNB/RNC/BSC. The X2/S1 message includes the random radio access parameter of the neighboring cell, and the manner of acquiring the random radio access parameter of the neighboring cell is of course not limited thereto. The X2 message may be an X2 interface setup/answer/update message (for example, X2 SETUP / RESPONSE/UPDATE), an X2 interface switch message, or another X2 message; the X2 message may be sent by an event trigger, such as related to the cell. The random wireless access parameters change, or the period triggers the transmission. The above S 1 message may be an S 1 interface setup/response/update message (eg S1) SETUP/RESPONSE/UPDATE), configure direct messaging (such as C0NFIGURTAI0N TRANSFER), or other SI port messages.

Step S120: In the non-handover phase, send a Radio Recourse Control (RRC) message to the user terminal, where the RRC message includes the random radio access parameter of the neighboring cell.

In the LTE system, the step is performed by an evolved base station (eNB). In this step, the eNB may selectively send random radio access parameters of the cell to the UE according to the relationship of the neighboring cells. For example, the eNB may preferentially consider the same coverage cell. , or other preferentially accessed cells, send random radio access parameters of the cells to the UE. The eNB may also select to send the random radio access parameters of the neighboring cell to the partial UE or all the UEs according to the priority of the UE, for example, according to the subscription information of the UE, the Quality of Service Class Identifier (QCI), or the user priority (SPID). , Subscriber profile identity) and other information, select some users with higher priority to send random wireless access parameters of neighboring cells. The eNB sends the foregoing random radio access parameters, such as an RRC reconfiguration message or a dedicated RRC message, or other RRC message to the UE through a radio resource control message. In the UMTS/GSM system, this step is performed by the RNC/BSC.

In this embodiment, the random radio access parameter of the neighboring cell is transmitted by using the radio resource control message, so that when a cell failure occurs suddenly, the user terminal can quickly access the neighboring cell by using the random radio access parameter of the neighboring cell, thereby improving the random radio connection. Speed and success rate.

Another embodiment of the present invention also provides a random wireless access device. Referring now to Figure 2, a random wireless access device in accordance with the present invention is described in detail, the device comprising:

The receiving module 210 is configured to acquire random radio access parameters of the neighboring cell. The receiving module 210 includes an X2, SI interface, and is configured to receive an X2/S1 message, where the random radio access parameter of the neighboring cell is included. In the LTE system, the receiving module 210 receives the random radio access parameter through the X2/S1 interface. In the LTE system shown in FIG. 4, the random radio access device may be located in the eNB; between different network systems, as shown in the figure. The random radio access parameter is received by the S1 interface between the LTE system and the UMTS/GSM system shown in FIG. 5, and the random radio access device is located at the eNB and the RNC/BSC. The above X2 message It may be an X2 interface setup/response/update message (eg X2 SETUP /RESPONSE/UPDATE), an X2 interface switch message or other X2 message; the above S1 message may be an S1 interface setup/answer/update message (eg SI SETUP/RESPONSE/UPDATE) ), configure direct messaging (such as C0NFIGURTAI0N TRANSFER), or other SI port messages. The sending of the X2/S1 message may be an event-triggered transmission, such as a change in a random radio access parameter associated with the cell, or a periodic triggering transmission;

The sending module 220 is configured to send a radio resource control message to the user equipment in the non-handover phase, where the radio resource control message includes the random radio access parameter of the neighboring cell. The sending module 220 is further configured to send the random radio access parameter of the cell to the UE according to the relationship of the neighboring cell. For example, the sending module 220 may preferentially consider the same coverage cell or other preferentially accessed cells, and send the cells to the UE. Random wireless access parameters. Or, the sending module 220 sends the foregoing radio resource control message to the partial UE or all the UEs according to the priority of the UE. For example, the sending module 220 may be configured according to the UE's subscription information, service type (QCI), or user priority (SPID). Information: Select some users with higher priority to send random wireless access parameters of neighboring cells. The sending module 220 sends the foregoing random radio access parameters, such as an RRC reconfiguration message or a dedicated RRC message, or other RRC message to the UE by using a radio resource control message.

This embodiment provides a random wireless access system. The random wireless access system is described in detail below with reference to FIG. 3. The system includes: the random wireless access device 310 and the user terminal 320 described in the second embodiment, wherein

a user equipment (UE) 320, configured to receive a radio resource control message sent by the random radio access device 310 in a non-handover phase to acquire a random radio access parameter of the neighboring cell, and to adjacency according to the random radio access parameter The cell performs random wireless access.

The random radio access device 310 receives random radio access parameters from neighboring cells. In the LTE system, the random radio access device 310 is located at the eNB, and receives the random through the X2/S1 interface. The wireless access parameter is as shown in FIG. 4; the random wireless access parameter may also be received between different network systems through the S1 interface, as shown in FIG. 5 between the LTE system and the UMTS/GSM system, the random wireless The access device is located at the eNB and the RNC/BSC. The X2 message may be an X2 interface setup/answer/update message (eg, X2 SETUP / RESPONSE/UPDATE), an X2 interface switch message, or other X2 message; the above S1 message may be an S1 interface setup/answer/update message (eg, S1 SETUP/RESPONSE/UPDATE ) , or configure a direct transfer message (such as C0NFIGURTAI0N TRANSFER). or other SI port messages. The sending of the X2/S1 message may be an event-triggered transmission, such as a change in a system message related to the cell, or a periodic trigger transmission.

The eNB may send a radio resource control message to the UE according to the relationship of the neighboring cell or the priority of the UE. For example, the eNB may preferentially consider the same coverage cell or other preferentially accessed cells, and send the random wireless access parameters of the cells to the UE. The eNB selects some users with higher priority to send random radio access parameters of neighboring cells according to information such as subscription information, service type (QCI), or user priority (SPID) of the UE. The eNB sends the above-mentioned random radio access parameters, such as an RRC reconfiguration message, or a dedicated RRC message, or other RRC message to the UE through a radio resource control message.

In this embodiment, the random radio access parameter of the neighboring cell is transmitted to the user terminal by using the radio resource control message, so that when the cell failure occurs suddenly, the user terminal can quickly access the neighboring cell by using the random radio access parameter of the neighboring cell, thereby improving The speed and success rate of random wireless access.

The above described specific embodiments of the present invention are further described in detail, and are intended to be illustrative of the embodiments of the present invention. The scope of the invention, any modifications, equivalents, improvements, etc., made within the scope of the invention are intended to be included within the scope of the invention.

Claims

Claim

A random radio access method, the method comprising:

Obtaining random wireless access parameters of the neighboring cell;

In the non-handover phase, the radio resource control message is sent to the user terminal, where the radio resource control message includes the random radio access parameter of the neighboring cell.

2. The method according to claim 1, wherein: the radio resource control message comprises a radio resource control reconfiguration message or a dedicated radio resource control message.

The method according to claim 1, wherein before the sending the radio resource control message to the user terminal, the method includes:

And receiving an X2/S1 message, where the X2/S1 message includes a random radio access parameter of the neighboring cell.

4. The method of claim 3, wherein:

The X2 message includes an X2 interface setup/answer/update message, an X2 interface switch message, or an X2 dedicated message;

The S1 message includes an S1 interface setup/response/update message, or a configuration direct message.

The method according to claim 3, wherein: the X2/S1 message is triggered by a neighboring cell random radio access parameter change event, or periodically triggered to send.

A random wireless access device, the device comprising:

a receiving module, configured to acquire random wireless access parameters of the neighboring cell;

And a sending module, configured to send a radio resource control message to the user terminal in a non-handover phase, where the radio resource control message includes a random radio access parameter of the neighboring cell.

7. The apparatus according to claim 6, wherein: the radio resource control message comprises a radio resource control reconfiguration message or a dedicated radio resource control message.

The device according to claim 7, wherein: the receiving module comprises an X2/S1 interface, configured to receive an X2/S1 message, where the X2/S1 message includes randomness of the neighboring cell Line access parameters.

9. The apparatus according to claim 8, wherein: the X2 message comprises an X2 interface setup/answer/update message, an X2 interface switch message or an X2 dedicated message;

A random wireless access system, comprising: the random wireless access device and the user terminal according to claims 6-9;

The user terminal is configured to receive a radio resource control message sent by the random radio access device in a non-handover phase to obtain a random radio access parameter of a neighboring cell, and perform randomization to the neighboring cell according to the random radio access parameter. Wireless access.