CN101039521A

CN101039521A - Method for improving connection keeping capability of mobile terminal

Info

Publication number: CN101039521A
Application number: CNA2007100782390A
Authority: CN
Inventors: 陈贤亮; 陈吕洋; 李贵勇; 李小文
Original assignee: CHORGYOU XINKE Co Ltd CHONGQING
Current assignee: Chongqing Cyit Communication Technologies Co Ltd
Priority date: 2007-02-15
Filing date: 2007-02-15
Publication date: 2007-09-19

Abstract

A method for improving the connectivity maintain ability of the mobile terminal. The present inventive method provides a novel improved method to overcome inadequacies in existing technologies, in view of the UE situation of 'a wireless link failure occurs in there-allocation process that the waiting network side confirms the complete news of the re-allocated RB'. In the presnt inventive method, the UE does not release any wireless resources, but initiates the community reelection process according to the measurements of each community in the list of the neighboring districts. After the community re-election is succeeded, the UE will immediately initiate the community renewal process with the reason of the wireless link failure at the new community with a better quality. The UE will establish a new physical channel configuration through a community updating confirmed information at the side of the receiving network, accordingly continuing the ongoing telecommunications at the new channel.

Description

A kind of method that improves connection keeping capability of mobile terminal

Technical field

The present invention relates to the method for a kind of raising mobile communication system user terminal (abbreviating UE as) connection hold facility, particularly a kind of method that improves the connection hold facility of user terminal in the 3-G (Generation Three mobile communication system).

Technical background

In 3-G (Generation Three mobile communication system), Radio Resource control (abbreviating RRC as) module is because occupy important status to the control of Radio Resource and management function in whole terminal.The RRC module has been set up Signaling Radio Bearer (abbreviating SRB as), the professional radio bearer (abbreviating RB as) that is used for carrier signaling, speech (data) etc., and has been obtained corresponding physical resource by Radio Resource control connection (abbreviating RRC as connects) foundation, initial processes such as radio bearer (abbreviating RB as) foundation.On this basis, according to the ability that business demand and the network of UE provides resource, network can also be adjusted the physical resource of distributing to UE at any time by the reprovision process of RB, to realize the reasonable resources scheduling under the prerequisite that satisfies most UE business demands.Whether exist RRC to connect according to UE, can divide UE for idle pulley and connection mode.And according to the difference of the every business of UE to resource requirement, UE can be in the different conditions under the connection mode again.When UE when carrying out business, particularly speech business or lot of data business the time, normally be in the cell dedicated channel status (abbreviating the CELL-DCH state as) under the connection mode.The essential characteristic of this state is that network has distributed special-purpose physical channel (abbreviating DPCH as) to UE, also promptly special-purpose Radio Resource.

In mobile communication system, UE is owing to be subjected to the influence of the situations such as mobility of base station range, natural environment and UE, always exists UE can't reliably send geographic area with received signal.And be in like this when regional as the UE that carries out communication traffic, will produce a large amount of errored blocks on its Radio Link, and finally cause Radio Link Failure.The UE that is in connection mode can add up the errored block that receives on the DPCH, be consecutively detected the errored block (this duration and errored block quantity are determined by the system message broadcasting of network) of some in a period of time, Radio Link Failure can take place in physical layer on RRC module indication DPCH.If Radio Link Failure has taken place on DPCH, then this physical channel can not continue to be used for bearer service.The UE that is in connection mode also can measure (typically measuring type and be the received signal code power on the Primary Common Control Physical Channel, i.e. P-CCPCH RSCP) to the signal quality of all sub-districts in the neighbor cell list (abbreviating ncellList as).Wherein, the data of neighbor cell list derive from the system message 11 or the system message 12 of Web broadcast at first.After RRC entered connection mode, these data can change according to the measurement control messages that receives.

RB reprovision process is always started to a UE RB reallocation message of transmission (as: RB sets up message, RB reconfiguration message or physical channel reconfiguration message etc.) by network side.After the RRC of UE side receives the RB reallocation message,, set up new DPCH configuration by the content configuration physical layer of message.(new DPCH is effective in the synchronous back of DPCH, can delete old physical channel configuration), RRC will use affirmation mode to network side send a corresponding RB reprovision finish message (as: RB set up finish message, RB reshuffle finish message or physical channel reshuffle finish message etc.), and wait for the confirmation of network side.

In the prior art, if waiting for that network side when the RB reprovision is finished the confirmation of message Radio Link Failure has taken place, RRC will take following steps to be handled:

1, discharges all Radio Resources (comprising that the resource and the RB reprovision process of distributing in the RB reallocation message begin preceding all Radio Resources);

2, discharge the signaling connection and the RAB (abbreviating RAB as) of all foundation to Non-Access Stratum (abbreviating NAS as) indication;

3, dispose all correlated variabless under the connection mode;

4, discharge RRC and connect, UE gets back to idle pulley.

Connect when RRC discharges all Radio Resources, RRC, when getting back to idle pulley, this connection that yet just means RRC does not just maintain, and UE has discharged current ongoing business improperly.If this moment is ongoing to be voice service, this UE has just produced call drop so; If this moment is ongoing to be data service, the transfer of data interruption has just taken place in this UE so.Like this, the influence that causes to user terminal is conspicuous.

Summary of the invention

For overcoming the above-mentioned deficiency of prior art, the inventive method is at the situation that UE " Radio Link Failure has taken place waiting for that network side is finished the RB reprovision in the RB reprovision process of confirmation of message ", proposes a kind of improving one's methods newly.In the inventive method, UE does not discharge any Radio Resource, but according to the measured value of each sub-district in the neighbor cell list, initiates cell reselection process.After sub-district gravity treatment success, UE will initiate former on the new sub-district of better quality immediately because the cell updating course of Radio Link Failure.By receiving the cell update acknowledgement message of network side, UE will set up new physical channel configuration, thereby proceed current ongoing communication traffic on new channel.

Run at UE in the situation of " Radio Link Failure having taken place waiting for that network side is finished the RB reprovision in the RB reprovision process of confirmation of message ", the signaling that the inventive method UE will continue to keep having set up connects, stop current RB reprovision process, detect the signal quality of all adjacent cells in the ncellList table then, newly select better sub-district of signal quality resident and on new resident sub-district, initiate former because the cell updating course of Radio Link Failure.Sending the cell update request message behind network, if receive the cell update acknowledgement message (network side can distribute new physical channel in this message) from network side, then RRC will set up new physical channel configuration according to the content of message.By newly-established physical channel, UE can keep ongoing business, because the current area better sub-district that is signal quality, and physical channel also is new configuration.In this way, UE can proceed current ongoing business effectively, thereby has reduced cutting off rate or transfer of data interruption rate.

As seen from the above, when the situation of UE " waiting for network side is finished the RB reprovision in the RB reprovision process of confirmation of message Radio Link Failure has taken place ", according to the inventive method, the key step that RRC takes has:

1, stops current RB reprovision process;

2, better sub-district of UE gravity treatment to a signal quality and success are resident;

3, on new resident sub-district, UE will initiate former because the cell updating course of " Radio Link Failure ";

4, UE sets up new physical channel configuration, and proceed current ongoing communication traffic on new physical channel according to the content from the cell update acknowledgement message of network side that receives.

This shows, can improve UE according to the present invention well and connect hold facility, reduced cutting off rate or transfer of data interruption rate.

Description of drawings:

Accompanying drawing 1 art methods UE is waiting for that network side finishes the process chart that Radio Link Failure has taken place in the RB reprovision process of confirmation of message to the RB reprovision.

Accompanying drawing 2 the inventive method UE are waiting for that network side finishes the process chart that Radio Link Failure has taken place in the RB reprovision process of confirmation of message to the RB reprovision.

The present invention is further illustrated below in conjunction with accompanying drawing.

Mainly just be after RRC receives the Radio Link Failure indication of physical layer from the difference between the existing as can be seen method of the contrast of accompanying drawing 1 and accompanying drawing 2 and the inventive method, the former directly simple termination is professional, discharge Radio Resource, discharge RRC and connect, thereby get back to idle pulley; The latter then only stops current reprovision process, the resource and the RRC that do not discharge other connect, better sub-district of UE gravity treatment to a signal quality and success are resident then, and the initiation cell updating course regains the newly assigned physical resource of network on new resident sub-district, thereby communication traffic is proceeded.

The inventive method also can have other various embodiments; without departing from the spirit and substance of the case in the method for the present invention; those skilled in the art work as can make various corresponding changes or distortion according to the inventive method, but these corresponding changes or distortion all belong to the claim protection range of the inventive method.

Claims

1, a kind of method that improves the connection hold facility of user terminal in the 3-G (Generation Three mobile communication system), RRC uses affirmation mode to send the confirmation that a corresponding RB reprovision is finished message and waited for network side to network side in the back in DPCH synchronously, it is characterized in that: as RRC occurs and waiting for that network side finishes the RB reprovision when in the RB reprovision process of confirmation of message Radio Link Failure having taken place, the signaling that UE will continue to keep having set up connects, stop current RB reprovision process, detect the signal quality of all adjacent cells in the ncellList table, better sub-district of signal quality of new selection is resident and initiate former because the cell updating course of Radio Link Failure on new resident sub-district, according to the content that receives from the cell update acknowledgement message of network side, set up new physical channel configuration, and on new physical channel, proceed current ongoing communication traffic.