CN101222756A

CN101222756A - Accidental access method and system

Info

Publication number: CN101222756A
Application number: CNA2007100626617A
Authority: CN
Inventors: 贺刚; 沈东栋; 王浩然; 宋爱慧; 陈迎; 常永宏
Original assignee: TD Tech Ltd
Current assignee: TD Tech Ltd
Priority date: 2007-01-12
Filing date: 2007-01-12
Publication date: 2008-07-16

Abstract

The invention discloses a method for random access which comprises the following steps that: A. user equipment UE launches random access; a base station indicates access allowance to the UE; B. a unique temporary mark is determined for the UE; the base station has interaction with the UE according to the temporary mark and establishes the connection of radio resource control RRC. The invention also discloses a random access system which comprises a UE and a base station. The technical proposal of the invention can effectively improve the efficiency of random access.

Description

A kind of accidental access method and system

Technical field

The present invention relates to the access technology in the radio communication, relate in particular to a kind of accidental access method and system.

Background technology

In wireless communication system, each subscriber equipment (UE) all can initiate to insert to network side at any time according to user's wish, so as the enjoy network side provide such as business such as voice, multimedias.

In present random access procedure, mainly comprise sending leading (preamble) sequence, ascending resource distribution and Radio Resource control operations such as (RRC).Fig. 1 shows the flow chart of accidental access method in existing Long Term Evolution (LTE) system.Referring to Fig. 1, existing accidental access method comprises:

In step 101～102, UE selects this targeting sequencing that uses in inserting at random, and this targeting sequencing is sent to evolved universal terrestrial wireless access network base station (eNB) by random access leader sequence message, and request is linked into network side; ENB distributes UE corresponding district Radio Network Temporary Identifier (C-RNTI) according to the targeting sequencing that receives, and the C-RNTI that is distributed is carried in the random access leader sequence response message, returns to UE.

In step 103～104, the scheduling request information that UE will carry the C-RNTI that receives and the UE of self sign sends to eNB, and request eNB is this UE distribution ascending resource; ENB carries out the distribution of ascending resource, and ascending resource information is carried in the dispatch request response message, sends to the UE of C-RNTI correspondence.

In step 105～106, the UE of C-RNTI correspondence obtains the UE sign from the dispatch request response message, and compare with self UE sign, when two UE signs are consistent, UE takies ascending resource according to this dispatch request response message, and sends RRC connection request message to eNB, and request is set up RRC with network side and is connected, eNB returns the RRC connection response message to UE after finishing the RRC establishment of connection.

So far, finish random access procedure.

When stating step in the use and realizing inserting at random, only have 16 targeting sequencings in the wireless communication system, a plurality of UE select the possibility of same preamble sequences bigger, and then the possibility of the corresponding identical C-RNTI of a plurality of UE is also bigger.Yet owing to the UE sign such as IMSI International Mobile Subscriber Identity (IMSI) or Temporary Mobile Subscriber Identity (TMSI) all is unique for each UE, therefore the introducing of UE sign can be under the situation that a plurality of UE initiate to insert at random by same access channel simultaneously, the access interference at random of avoiding the repetition because of targeting sequencing to bring.

Mix the wireless communication system that retransmits (HAQR) mechanism automatically for adopting, in the above-mentioned random access procedure, the UE only UE in dispatch request response message sign and the UE of self identifies when identical, just return affirmation (ACK) message, can accurately know whether the dispatch request response message is successfully sent to the UE that initiation inserts at random to guarantee eNB to eNB.But UE must determine at first whether the DSCH Downlink Shared Channel (DL_SCH) of this dispatch request response message of carrying has distributed to self before the comparison of carrying out the UE sign, and parsed the UE sign under sure situation again from this message.When using identical targeting sequencing to bring at random access interference because of a plurality of UE, because the dispatch request response message is to carry out addressing by C-RNTI, each UE all need be after receiving this dispatch request response message, therefrom parse UE sign, judged whether to take place at random access interference and self whether be the real recipient of this message.Because need expend a period of time and resource to obtaining of UE sign, so the time that conflict solves and inserts at random is longer, efficient is lower, and the complicated operation degree is higher, and then the feasible cost that inserts at random is higher.

Summary of the invention

The invention provides a kind of accidental access method, can improve access efficiency at random effectively.

In accidental access method of the present invention, may further comprise the steps:

A. user equipment (UE) initiates to insert at random, and the base station indicates to UE and allows to insert;

B. for this UE determines exclusive temporary mark, and the base station is mutual according to this temporary mark and UE, sets up radio resource control RRC and connects.

Preferably, the described UE of steps A initiates to insert at random to comprise: UE selects this targeting sequencing that uses in inserting at random, and this targeting sequencing is sent to the base station by random access leader sequence message, and request is linked into network side;

The described base station of steps A indicates to allow to insert to UE and comprises: the base station is that UE distributes corresponding district Radio Network Temporary Identifier C-RNTI according to the targeting sequencing that receives, and the C-RNTI that is distributed is carried on shows and allow to return to UE in the random access leader sequence response message that UE inserts.

Preferably, the exclusive temporary mark of described UE is calculating Radio Network Temporary Identifier CA-RNTI, and step B is described to be comprised for this UE determines exclusive temporary mark:

UE is according to UE sign of self and the C-RNTI that receives, and the CA-RNTI algorithm according to setting in advance obtains and preserve the CA-RNTI of this UE correspondence.

Preferably, the described base station of step B is mutual according to this temporary mark and UE, sets up the radio resource control RRC connection and comprises:

B11.UE sends the scheduling request information that carries described C-RNTI and UE sign to the base station, request base station assigns ascending resource;

B12. the base station obtains C-RNTI and UE sign from the scheduling request information that receives, obtain the CA-RNTI of this UE correspondence according to described CA-RNTI algorithm, for this UE distributes ascending resource, and ascending resource information is carried on in the dispatch request response message of CA-RNTI as addressing sign, send to the UE of CA-RNTI correspondence;

B13.UE obtains the CA-RNTI as the addressing sign from this dispatch request response message, judge whether the CA-RNTI that is obtained is consistent with the CA-RNTI that self preserves, if, then continue execution in step B14, otherwise, abandon this dispatch request response message, and wait for the network side response or finish this random access procedure;

B14.UE sends RRC connection request message to the base station, and request is set up RRC with network side and is connected, and after the RRC establishment of connection is finished in the base station, returns the RRC connection response message to UE.

B21.UE sends the scheduling request information that carries C-RNTI and CA-RNTI to the base station, request base station assigns ascending resource;

B22. the base station obtains C-RNTI and CA-RNTI from the scheduling request information that receives, and this C-RNTI and CA-RNTI bound together, for UE distributes ascending resource, and ascending resource information is carried on in the CA-RNTI that the receives dispatch request response message as the addressing sign, send to the UE of CA-RNTI correspondence;

B23.UE obtains the CA-RNTI as the addressing sign from this dispatch request response message, judge whether the CA-RNTI that is obtained is consistent with the CA-RNTI that self preserves, if, then continue execution in step B24, otherwise, abandon this dispatch request response message, and wait for the network side response or finish this random access procedure;

B24.UE sends RRC connection request message to the base station, and request is set up RRC with network side and is connected, and the RRC connection response message is returned to UE in the base station after finishing the RRC establishment of connection.

Preferably, described temporary mark is a random number, and step B is described to be comprised for this UE determines exclusive temporary mark: UE generates and preserves this random number of using in inserting at random;

The described station of step B is mutual according to this temporary mark and UE, sets up the radio resource control RRC connection and comprises:

B31.UE sends the scheduling request information that carries C-RNTI and the random number that is generated to the base station, request base station assigns ascending resource;

B32. the base station obtains C-RNTI and random number from the scheduling request information that receives, and this C-RNTI and random number bound together, for UE distributes ascending resource, and ascending resource information is carried on in the dispatch request response message of this random number as addressing sign, send to the UE of this random number correspondence;

B33.UE obtains the random number as the addressing sign from this dispatch request response message, judge whether the random number that is obtained is consistent with the random number of self preserving, if, then continue execution in step B34, otherwise, abandon this dispatch request response message, and wait for the network side response or finish this random access procedure;

B34.UE sends RRC connection request message to the base station, and request is set up RRC with network side and is connected, and the RRC connection response message is returned to UE in the base station after finishing the RRC establishment of connection.

Preferably, described base station returns to the random access leader sequence response message before the UE, further comprises: for UE distributes ascending resource;

Described when the random access leader sequence response message is returned to UE, further comprise: ascending resource information is returned to UE.

Preferably, described temporary mark is CA-RNTI, and step B is described to be comprised for this UE determines exclusive temporary mark: UE is according to UE sign of self and the C-RNTI that receives, and the CA-RNTI algorithm according to setting in advance obtains and preserve the CA-RNTI of this UE correspondence.

B41.UE sends the RRC connection request message that carries C-RNTI and UE sign to the base station, and request is set up RRC with network side and is connected;

B42. the base station obtains C-RNTI and UE sign from the RRC connection request message that receives, obtain the CA-RNTI of this UE correspondence according to described CA-RNTI algorithm, begin to set up UE and be connected, and send with CA-RNTI to the UE of this CA-RNTI correspondence and to solve message as the RRC conflict of addressing sign with RRC between the network side;

B43.UE solves the CA-RNTI that obtains the message as the addressing sign from this RRC conflict, judge whether the CA-RNTI that is obtained is consistent with the CA-RNTI that self preserves, if, then continue to resolve this RRC conflict and solve message, otherwise, abandon this RRC conflict and solve message, and wait for the network side response or finish this random access procedure.

B51.UE sends the RRC connection request message that carries C-RNTI and CA-RNTI to the base station, and request is set up RRC with network side and is connected;

B52. the base station obtains C-RNTI and CA-RNTI from the RRC connection request message that receives, and this C-RNTI and CA-RNTI bound together, begin to set up UE and be connected, and send with CA-RNTI to the UE of CA-RNTI correspondence and to solve message as the RRC conflict of addressing sign with RRC between the network side;

B53.UE solves the CA-RNTI that obtains the message as the addressing sign from this RRC conflict, judge whether the CA-RNTI that is obtained is consistent with the CA-RNTI that self preserves, if, then continue to resolve this message, otherwise, abandon this RRC conflict and solve message, and wait for the network side response or finish this random access procedure.

B61.UE sends the RRC connection request message that carries C-RNTI and the random number that is generated to the base station, and request is set up RRC with network side and is connected;

B62. the base station obtains C-RNTI and random number from the RRC connection request message that receives, and this C-RNTI and random number bound together, begin to set up UE and be connected, and send with this random number to the UE of this random number correspondence and to solve message as the RRC conflict of addressing sign with RRC between the network side;

B63.UE solves the random number of obtaining the message as the addressing sign from this RRC conflict, judge whether the random number that is obtained is consistent with the random number of self preserving, if, then continue to resolve this message, otherwise, abandon this RRC conflict and solve message, and wait for the network side response or finish this random access procedure.

The present invention also provides a kind of random access system, can improve access efficiency at random effectively.

In random access system of the present invention, comprising: user equipment (UE) and base station, wherein,

Described UE is used to ask the base station to allow the access at random of this UE, receives the notice that the permission come from the base station inserts, and obtains the exclusive temporary mark of this UE, utilizes this temporary mark and base station mutual, and sets up radio resource control RRC with network side and be connected; Described base station is used to receive the request of access at random that comes from UE, and notice UE allows to insert, and obtains the temporary mark of this UE correspondence, and is mutual according to this temporary mark and UE, and cooperates UE to set up the RRC connection.

Preferably, described UE comprises: memory module, calculating and comparing module and communication module, wherein,

Memory module is used to preserve predetermined calculating Radio Network Temporary Identifier CA-RNTI algorithm, targeting sequencing and UE sign, and receives and preserve the CA-RNTI that this that come from calculating and comparing module uses in inserting at random;

Calculating and comparing module is used for selecting a targeting sequencing from the targeting sequencing that memory module is preserved, and this targeting sequencing is sent to communication module; Reception comes from the Cell Radio Network Temporary Identifier/Identity, Cell-RNTI C-RNTI of communication module, from memory module, read CA-RNTI algorithm and UE sign, according to the algorithm that reads, utilize UE sign and C-RNTI obtain this insert at random in the CA-RNTI of use, send this CA-RNTI to memory module, and UE sign and C-RNTI are sent to communication module; Reception comes from the CA-RNTI of communication module, CA-RNTI that receives and the CA-RNTI that reads from memory module are compared, when both are consistent, the notification communication module is resolved the message that carries this CA-RNTI that receives, when both were inconsistent, the notification communication module abandoned the message that carries this CA-RNTI that receives;

Communication module is used to receive the targeting sequencing that comes from calculating and comparing module, and this targeting sequencing is sent to the base station, and the request access network; Reception comes from the response to access network that carries C-RNTI of base station, and the C-RNTI that receives is sent to calculating and comparing module; Reception comes from the UE sign and the C-RNTI of calculating and comparing module, and this UE sign and C-RNTI are sent to base station and request distribution ascending resource; Reception comes from the message that carries CA-RNTI and ascending resource information of base station, this CA-RNTI is sent to calculating and comparing module, under the notice of calculating and comparing module, take resource and ask the base station to set up the RRC connection according to ascending resource information, perhaps abandon the message that carries CA-RNTI and ascending resource information.

Preferably, described base station comprises memory module, control module and communication module, wherein,

Memory module is used to preserve the corresponding relation of predetermined CA-RNTI algorithm and targeting sequencing and C-RNTI, and receives and preserve the CA-RNTI that comes from control module;

Control module is used to receive the targeting sequencing that comes from communication module, reads corresponding relation from memory module, determines the C-RNTI of this targeting sequencing correspondence, and this C-RNTI is sent to communication module; Reception comes from the UE sign and the C-RNTI of communication module, from memory module, read the CA-RNTI algorithm, according to the algorithm that reads, UE sign and C-RNTI that utilization receives calculate the CA-RNTI that UE uses in this inserts at random, for this UE distributes ascending resource, CA-RNTI and ascending resource information are sent to communication module; Reception comes from the RRC connection request of communication module, set up UE and be connected with the RRC of network side, and notification communication module RRC connection foundation is finished;

Communication module is used to receive the targeting sequencing that comes from UE, and this targeting sequencing is sent to control module; Reception comes from the C-RNTI of control module, this C-RNTI is sent to UE and notify UE to allow to insert; Reception comes from the UE sign of UE and the request of C-RNTI and distribution ascending resource, and is transmitted to control module; Reception comes from the CA-RNTI and the ascending resource information of control module, and sends to UE; Reception comes from the RRC connection request of UE, and this request is sent to control module; Under the notice of control module, indicate RRC connection foundation to UE and finish.

Memory module is used to preserve predetermined CA-RNTI algorithm, targeting sequencing and UE sign, and receives and preserve the CA-RNTI that this that come from calculating and comparing module uses in inserting at random;

Calculating and comparing module is used for selecting a targeting sequencing from the targeting sequencing that memory module is preserved, and this targeting sequencing is sent to communication module; Reception comes from the C-RNTI of communication module, from memory module, read CA-RNTI algorithm and UE sign, according to the algorithm that reads, utilize UE sign and C-RNTI obtain this insert at random in the CA-RNTI of use, send this CA-RNTI to memory module, and C-RNTI and CA-RNTI are sent to communication module; Reception comes from the CA-RNTI of communication module, CA-RNTI that receives and the CA-RNTI that reads from memory module are compared, when both are consistent, the notification communication module is resolved the message that carries this CA-RNTI that receives, when both were inconsistent, the notification communication module abandoned the message that carries this CA-RNTI that receives;

Communication module is used to receive the targeting sequencing that comes from calculating and comparing module, and this targeting sequencing is sent to the base station, and the request access network; Reception comes from the response to access network that carries C-RNTI of base station, and the C-RNTI that receives is sent to calculating and comparing module; Reception comes from the C-RNTI and the CA-RNTI of calculating and comparing module, and this C-RNTI and CA-RNTI are sent to base station and request distribution ascending resource; Reception comes from the message that carries CA-RNTI and ascending resource information of base station, this CA-RNTI is sent to calculating and comparing module, under the notice of calculating and comparing module, take resource and ask the base station to set up the RRC connection according to ascending resource information, perhaps abandon the message that carries CA-RNTI and ascending resource information.

Memory module is used to preserve the corresponding relation of predetermined targeting sequencing and C-RNTI, and receives and preserve and come from the C-RNTI of control module and the binding relationship of CA-RNTI;

Control module is used to receive the targeting sequencing that comes from communication module, reads corresponding relation from memory module, determines the C-RNTI of this targeting sequencing correspondence, and this C-RNTI is sent to communication module; C-RNTI and CA-RNTI that reception comes from communication module bind this C-RNTI and CA-RNTI, and binding relationship are sent to memory module, for this UE distributes ascending resource, CA-RNTI and ascending resource information are sent to communication module; Reception comes from the RRC connection request of communication module, set up UE and be connected with the RRC of network side, and notification communication module RRC connection foundation is finished;

Communication module is used to receive the targeting sequencing that comes from UE, and this targeting sequencing is sent to control module; Reception comes from the C-RNTI of control module, this C-RNTI is sent to UE and notify UE to allow to insert; Reception comes from the request of C-RNTI and CA-RNTI and the distribution ascending resource of UE, and is transmitted to control module; Reception comes from the CA-RNTI and the ascending resource information of control module, and sends to UE; Reception comes from the RRC connection request of UE, and this request is sent to control module; Under the notice of control module, indicate RRC connection foundation to UE and finish.

Preferably, described UE comprises: memory module, calculating and comparing module and communication module, wherein

Memory module is used to preserve predetermined targeting sequencing, and receives and preserve the random number that the C-RNTI that comes from calculating and comparing module and this use in inserting at random;

Calculating and comparing module is used for selecting a targeting sequencing from the targeting sequencing that memory module is preserved, and this targeting sequencing is sent to communication module; Reception comes from the C-RNTI of communication module, generates the random number that this uses in inserting at random, sends this C-RNTI and random number to memory module and communication module; Reception comes from the random number of communication module, random number that receives and the random number that reads from memory module are compared, when both are consistent, the notification communication module is resolved the message that carries this random number that receives, when both were inconsistent, the notification communication module abandoned the message that carries this random number that receives;

Communication module is used to receive the targeting sequencing that comes from calculating and comparing module, and this targeting sequencing is sent to the base station, and the request access network; Reception comes from the response to access network that carries C-RNTI of base station, and the C-RNTI that receives is sent to calculating and comparing module; Reception comes from the C-RNTI and the random number of calculating and comparing module, and this random number and C-RNTI are sent to base station and request distribution ascending resource; Reception comes from the message that carries random number and ascending resource information of base station, this random number is sent to calculating and comparing module, under the notice of calculating and comparing module, take resource and ask the base station to set up the RRC connection according to ascending resource information, perhaps abandon the message that carries random number and ascending resource information.

Preferably, described base station comprises: memory module, control module and communication module, wherein,

Memory module is used to preserve the corresponding relation of predetermined targeting sequencing and C-RNTI, and receives and preserve and come from the C-RNTI of control module and the binding relationship of random number;

Control module is used to receive the targeting sequencing that comes from communication module, reads corresponding relation from memory module, determines the C-RNTI of this targeting sequencing correspondence, and this C-RNTI is sent to communication module; Random number and C-RNTI that reception comes from communication module bind this random number and C-RNTI, and this binding relationship is sent to memory module, for this UE distributes ascending resource, and this random number and ascending resource information are sent to communication module; Reception comes from the RRC connection request of communication module, set up UE and be connected with the RRC of network side, and notification communication module RRC connection foundation is finished;

Communication module is used to receive the targeting sequencing that comes from UE, and this targeting sequencing is sent to control module; Reception comes from the C-RNTI of control module, this C-RNTI is sent to UE and notify UE to allow to insert; Reception comes from the random number of UE and the request of C-RNTI and distribution ascending resource, and is transmitted to control module; Reception comes from the random number and the ascending resource information of control module, and sends to UE; Reception comes from the RRC connection request of UE, and this request is sent to control module; Under the notice of control module, indicate RRC connection foundation to UE and finish.

Calculating and comparing module is used for selecting a targeting sequencing from the targeting sequencing that memory module is preserved, and this targeting sequencing is sent to communication module; Reception comes from the C-RNTI of communication module, from memory module, read CA-RNTI algorithm and UE sign, according to the algorithm that reads, utilize UE sign and C-RNTI obtain this insert at random in the CA-RNTI of use, send this CA-RNTI to memory module, and UE sign and C-RNTI are sent to communication module; Reception comes from the CA-RNTI of communication module, CA-RNTI that receives and the CA-RNTI that reads from memory module are compared, when both are consistent, the notification communication module is resolved the message that carries this CA-RNTI that receives, when both were inconsistent, the notification communication module abandoned the message that carries this CA-RNTI that receives;

Communication module is used to receive the targeting sequencing that comes from calculating and comparing module, and this targeting sequencing is sent to the base station, and the request access network; Reception comes from the response to access network that carries C-RNTI and ascending resource information of base station, and the C-RNTI that receives is sent to calculating and comparing module, and takies resource according to this ascending resource information; Reception comes from the UE sign and the C-RNTI of calculating and comparing module, this UE sign is sent to the base station and asks to set up RRC with C-RNTI be connected; The showing of CA-RNTI that carry that reception comes from the base station solves access interference at random or RRC and connects and set up the message of finishing, this CA-RNTI is sent to calculating and comparing module, under the notice of calculating and comparing module, resolve the message that this carries CA-RNTI, perhaps abandon this message.

Control module is used to receive the targeting sequencing that comes from communication module, reads corresponding relation from memory module, determines the C-RNTI of this targeting sequencing correspondence, for this UE distributes ascending resource, and this C-RNTI and ascending resource information is sent to communication module; Reception comes from UE sign and the C-RNTI and the RRC connection request of communication module, from memory module, read the CA-RNTI algorithm, according to the algorithm that reads, UE sign and C-RNTI that utilization receives calculate the CA-RNTI that UE uses in this inserts at random, beginning to set up this UE is connected with RRC between the network side, CA-RNTI is sent to communication module, and the notification communication module at random access interference solved or RRC connect to set up and to finish;

Communication module is used to receive the targeting sequencing that comes from UE, and this targeting sequencing is sent to control module; Reception comes from the C-RNTI and the ascending resource information of control module, and this C-RNTI and ascending resource information are sent to UE and notify UE permission access; Reception comes from UE sign and the C-RNTI of UE and sets up the RRC connection requests, and is transmitted to control module; The CA-RNTI that reception comes from control module with show at random that access interference has solved or RRC is connected and sets up the notice of finishing, this CA-RNTI is sent to UE, and indicates at random that access interference has solved or RRC connects to set up and finishes to UE.

Communication module is used to receive the targeting sequencing that comes from calculating and comparing module, and this targeting sequencing is sent to the base station, and the request access network; Reception comes from the response to access network that carries C-RNTI and ascending resource information of base station, and the C-RNTI that receives is sent to calculating and comparing module, and takies resource according to this ascending resource information; Reception comes from the C-RNTI and the CA-RNTI of calculating and comparing module, this C-RNTI and CA-RNTI is sent to the base station and ask to set up RRC be connected; Reception comes from the message that access interference has solved or RRC connection foundation is finished at random that shows that carries CA-RNTI of base station, this CA-RNTI is sent to calculating and comparing module, under the notice of calculating and comparing module, resolve the message that this carries CA-RNTI, perhaps abandon this message.

Control module is used to receive the targeting sequencing that comes from communication module, reads corresponding relation from memory module, determines the C-RNTI of this targeting sequencing correspondence, for this UE distributes ascending resource, and this C-RNTI and ascending resource information is sent to communication module; Reception comes from C-RNTI and the CA-RNTI and the RRC connection request of communication module, this C-RNTI and CA-RNTI are bound, and binding relationship sent to memory module, beginning to set up this UE is connected with RRC between the network side, CA-RNTI is sent to communication module, and the notification communication module at random access interference solved or RRC connect to set up and to finish;

Communication module is used to receive the targeting sequencing that comes from UE, and this targeting sequencing is sent to control module; Reception comes from the C-RNTI and the ascending resource information of control module, and this C-RNTI and ascending resource information are sent to UE and notify UE permission access; Reception comes from C-RNTI and the CA-RNTI of UE and sets up the RRC connection requests, and is transmitted to control module; Reception comes from the CA-RNTI of control module and shows that access interference has at random solved or RRC connects and sets up the notice of finishing, and this CA-RNTI is sent to UE, and indicates at random that access interference has solved or RRC connects to set up and finishes to UE.

Communication module is used to receive the targeting sequencing that comes from calculating and comparing module, and this targeting sequencing is sent to the base station, and the request access network; Reception comes from the response to access network that carries C-RNTI and ascending resource information of base station, and the C-RNTI that receives is sent to calculating and comparing module, and takies resource according to this ascending resource information; Reception comes from the C-RNTI and the random number of calculating and comparing module, this random number is sent to the base station and asks to set up RRC with C-RNTI be connected; Reception comes from the message that access interference has solved or RRC connection foundation is finished at random that shows that carries random number of base station, this random number is sent to calculating and comparing module, under the notice of calculating and comparing module, resolve the message that this carries CA-RNTI, perhaps abandon this message.

Control module is used to receive the targeting sequencing that comes from communication module, reads corresponding relation from memory module, determines the C-RNTI of this targeting sequencing correspondence, for this UE distributes ascending resource, and this C-RNTI and ascending resource information is sent to communication module; Reception comes from the random number and the C-RNTI of communication module, this random number and C-RNTI are bound, this binding relationship is sent to memory module, beginning to set up this UE is connected with RRC between the network side, this random number is sent to communication module, and the notification communication module at random access interference solved or RRC connect to set up and to finish;

Communication module is used to receive the targeting sequencing that comes from UE, and this targeting sequencing is sent to control module; Reception comes from the C-RNTI and the ascending resource information of control module, and this C-RNTI and ascending resource information are sent to UE and notify UE permission access; Reception comes from random number and the C-RNTI of UE and sets up the RRC connection requests, and is transmitted to control module; Reception comes from the random number of control module and shows that access interference has at random solved or RRC connects and sets up the notice of finishing, and this random number is sent to UE, and indicates at random that access interference has solved or RRC connects to set up and finishes to UE.

Use the present invention, can improve the efficient that inserts at random effectively.Particularly, the present invention has following beneficial effect:

1. the present invention is that the UE that initiates to insert at random distributes unique temporary mark in random access procedure, to be different from other UE.Network side identifies issuing message with this temporary mark as addressing, for UE, after receiving the message of network side, only needs can know by the addressing sign whether self is the real recipient of this message, and need not to carry out the operation of resolving message.Like this, technical scheme of the present invention can shorten turn-on time at random effectively, improves access efficiency at random.And because the temporary mark of each UE is all different, so the present invention can also avoid the appearance of access interference at random.

2. in an embodiment of the present invention, UE and base station all utilize predetermined algorithm, according to the UE sign of UE and the C-RNTI of base station assigns, calculate the temporary mark that uses in this random access procedure respectively; Perhaps, UE calculates temporary mark according to UE sign and C-RNTI, sends to the base station again.Above-mentioned dual mode is simple to operate, and complexity is lower.

3. in other embodiments of the invention, UE generates random number as temporary mark, and bind C-RNTI and the random number of this UE and preserve after receiving the random number that UE reports the base station.Because the probability that random number repeats is very low, therefore can more effectively prevent the access interference at random of selecting identical targeting sequencing to bring because of a plurality of UE.

Description of drawings

To make clearer above-mentioned and other feature and advantage of the present invention of those of ordinary skill in the art by describe exemplary embodiment of the present invention in detail with reference to accompanying drawing below, in the accompanying drawing:

Fig. 1 is the flow chart of existing accidental access method;

Fig. 2 is the exemplary process diagram of accidental access method among the present invention;

Fig. 3 is the exemplary block diagram of random access system among the present invention;

Fig. 4 is the flow chart of accidental access method in the embodiment of the invention 1;

Fig. 5 is the structural representation of random access system in the embodiment of the invention 1;

Fig. 6 is the flow chart of accidental access method in the embodiment of the invention 2;

Fig. 7 is the flow chart of accidental access method in the embodiment of the invention 3;

Fig. 8 is the flow chart of accidental access method in the embodiment of the invention 4;

Fig. 9 is the flow chart of accidental access method in the embodiment of the invention 5;

Figure 10 is the flow chart of accidental access method in the embodiment of the invention 6.

Embodiment

For making purpose of the present invention, technical scheme clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, the present invention is described in further detail.

The invention provides a kind of accidental access method, in the method, for the UE that initiates to insert at random determines unique temporary mark, network side is addressed to corresponding UE according to this temporary mark.

Fig. 2 shows the exemplary process diagram of accidental access method among the present invention.Referring to Fig. 2, this method comprises:

In step 201, UE initiates to insert at random, and the base station indicates to UE and allows to insert;

In step 202, for this UE determines exclusive temporary mark, and the base station is mutual according to this temporary mark and UE, sets up RRC and connects.

Correspondingly, Fig. 3 shows the structural representation of random access system among the present invention.In Fig. 3, this system comprises: UE and base station.Wherein, UE is used to ask the base station to allow the access at random of this UE, receives the notice that the permission come from the base station inserts, and obtains the exclusive temporary mark of this UE, utilizes this temporary mark and base station mutual, and sets up RRC with network side and be connected.The base station is used to receive the request of access at random that comes from UE, and notice UE allows to insert, and obtains the temporary mark of this UE correspondence, and is mutual according to this temporary mark and UE, and cooperates UE to set up the RRC connection.

From above method and system as seen, the present invention determines the exclusive temporary mark of UE in random access procedure, initiates the UE that inserts at random simultaneously so that be different from by same access channel; And addressing is carried out based on this temporary mark in the base station, and is directly mutual with corresponding UE, realizes inserting at random.Like this, whether UE only need get access to from the message that comes from the base station that addressing sign just can determine whether to take place at random access interference and self be the real recipient of this message, thereby continues or initiate access at random again.Owing to obtain the required time of addressing sign well below resolving the required time of message, therefore, when using identical targeting sequencing to cause at random access interference because of a plurality of UE, the solution of the present invention can shorten the time that manages conflict and insert at random effectively, raises the efficiency.And, in the technical scheme of the present invention the base station according to each UE exclusive temporary mark carry out addressing, be not that the UE of this temporary mark correspondence need not to carry out the operation of resolving base station message at every turn, reduced the complicated operation degree effectively, and then the reduction cost of access.

Be example with the LTE system below, the accidental access method among the present invention be elaborated by six embodiment.

Embodiment 1

Present embodiment is at the wireless communication system of time division duplex (TDD) pattern, and the temporary mark of present embodiment is the CA-RNTI that utilizes UE sign and C-RNTI to calculate.

Fig. 4 shows the flow chart of accidental access method in the present embodiment.Referring to Fig. 4, this method comprises:

In step 401～402, UE selects this targeting sequencing that uses in inserting at random, and this targeting sequencing is sent to eNB by random access leader sequence message, and request is linked into network side; ENB is that UE distributes corresponding C-RNTI according to the targeting sequencing that receives, and the C-RNTI that is distributed is carried in the random access leader sequence response message that shows permission UE access, returns to UE.

When the user who uses UE goes for the service that network provides, initiate to insert at random to network side by UE.At this moment, UE at first selects a targeting sequencing from predetermined 16 targeting sequencings, so that carry out channel estimating smoothly in access procedure; Then, UE sends the random access leader sequence message that carries selected targeting sequencing to eNB, in the request access network, this targeting sequencing is reported eNB.In order to distinguish each UE in the sub-district, eNB distributes C-RNTI according to the targeting sequencing that receives, and sends to UE by the random access leader sequence response message.

In step 403～404, UE according to predetermined CA-RNTI algorithm, obtains and preserves the CA-RNTI of this UE correspondence according to UE sign of self and the C-RNTI that receives, and send the scheduling request information that carries C-RNTI and UE sign to eNB, request eNB distributes ascending resource.

In order to tackle the situation that a plurality of UE select identical targeting sequencing and initiate simultaneously to insert at random on same access channel, present embodiment is provided with identical CA-RNTI algorithm in advance in UE and eNB, Hash (HASH) algorithm for example, in this algorithm with UE sign and C-RNTI as parameter, by computing is that UE determines CA-RNTI, to be convenient to issuing and receiving of message in subsequent step.Though may exist a plurality of UE to use the possibility of identical C-RNTI simultaneously, because the UE of each UE sign is different, so CA-RNTI is unique for each UE.

In addition, calculate CA-RNTI here and send the order that there is not strictness in scheduling request information, in other words, also can send scheduling request information to eNB earlier, then UE calculates CA-RNTI again.

In step 405～407, eNB obtains C-RNTI and UE sign from the scheduling request information that receives, and obtains the CA-RNTI of UE correspondence according to predetermined CA-RNTI algorithm; Be UE distribution ascending resource, and ascending resource information is carried on in the dispatch request response message of CA-RNTI as the addressing sign, send to the UE of CA-RNTI correspondence; Then, UE obtains the CA-RNTI as the addressing sign from this dispatch request response message, judge whether the CA-RNTI that is obtained is consistent with the CA-RNTI that self preserves, if, then continue execution in step 408, otherwise, abandon this dispatch request response message, and wait for the network side response or finish this random access procedure.

In three steps herein, eNB according to the algorithm identical with UE, draws the CA-RNTI of this UE correspondence after receiving the UE sign and C-RNTI that UE reports, so that carry out addressing in the subsequent step during issuing message.Certainly there are not strict order in the operation of the CA-RNTI of eNB calculating herein and the operation of resource allocation.In other words, can distribute ascending resource earlier, calculate CA-RNTI again.

Initiate situation about inserting at random simultaneously by same access channel for a plurality of UE, all UE all can receive the dispatch request response message as the addressing sign with CA-RNTI, the addressing sign of these UE by the message that will receive compares with the CA-RNTI of self, determines whether self is the real recipient of this dispatch request response message.Particularly, when two CA-RNTI were identical, UE judged from the real recipient as this message, then continues to carry out at random and inserts; And when two CA-RNTI were inequality, UE need not to carry out the parsing of message and directly abandons.As seen, UE only just can finish the reception of message by the addressing sign or abandon, and need not to carry out the operation of resolving message, and it is lower to shorten turn-on time and complicated operation degree.

In step 408～409, UE takies ascending resource according to the ascending resource information that receives, and sends RRC connection request message to eNB, and request is set up RRC with network side and is connected, and eNB returns the RRC connection response message to UE after finishing the RRC establishment of connection.

So far, finish random access procedure in the present embodiment.

For guaranteeing carrying out smoothly of above-mentioned flow process, present embodiment adopts random access system shown in Figure 5.Referring to Fig. 5, this random access system comprises: UE and eNB.Wherein, UE comprises memory module, calculating and comparing module and communication module; ENB comprises memory module, control module and communication module.

For UE, memory module is used to preserve predetermined CA-RNTI algorithm, targeting sequencing and UE sign, and receives and preserve the CA-RNTI that this that come from calculating and comparing module uses in inserting at random.Calculating and comparing module is used for selecting a targeting sequencing from the targeting sequencing that memory module is preserved, and this targeting sequencing is sent to communication module; Reception comes from the C-RNTI of communication module, from memory module, read CA-RNTI algorithm and UE sign, according to the algorithm that reads, utilize UE sign and C-RNTI obtain this insert at random in the CA-RNTI of use, send this CA-RNTI to memory module, and UE sign and C-RNTI are sent to communication module; Reception comes from the CA-RNTI of communication module, CA-RNTI that receives and the CA-RNTI that reads from memory module are compared, when both are consistent, the notification communication module is resolved the message that carries this CA-RNTI that receives, when both were inconsistent, the notification communication module abandoned the message that carries this CA-RNTI that receives.Communication module is used to receive the targeting sequencing that comes from calculating and comparing module, and this targeting sequencing is sent to eNB, and the request access network; Reception comes from the response to access network that carries C-RNTI of eNB, and the C-RNTI that receives is sent to calculating and comparing module; Reception comes from the UE sign and the C-RNTI of calculating and comparing module, and this UE sign and C-RNTI are sent to eNB and request distribution ascending resource; Reception comes from the message that carries CA-RNTI and ascending resource information of eNB, this CA-RNTI is sent to calculating and comparing module, under the notice of calculating and comparing module, take resource and ask eNB to set up the RRC connection according to ascending resource information, perhaps abandon the message that carries CA-RNTI and ascending resource information.

For eNB, memory module is used to preserve the corresponding relation of predetermined CA-RNTI algorithm and targeting sequencing and C-RNTI, and receives and preserve the CA-RNTI that comes from control module.Control module is used to receive the targeting sequencing that comes from communication module, reads corresponding relation from memory module, determines the C-RNTI of this targeting sequencing correspondence, and this C-RNTI is sent to communication module; Reception comes from the UE sign and the C-RNTI of communication module, from memory module, read the CA-RNTI algorithm, according to the algorithm that reads, UE sign and C-RNTI that utilization receives calculate the CA-RNTI that UE uses in this inserts at random, for this UE distributes ascending resource, CA-RNTI and ascending resource information are sent to communication module; Reception comes from the RRC connection request of communication module, set up UE and be connected with the RRC of network side, and notification communication module RRC connection foundation is finished.Communication module is used to receive the targeting sequencing that comes from UE, and this targeting sequencing is sent to control module; Reception comes from the C-RNTI of control module, this C-RNTI is sent to UE and notify UE to allow to insert; Reception comes from the UE sign of UE and the request of C-RNTI and distribution ascending resource, and is transmitted to control module; Reception comes from the CA-RNTI and the ascending resource information of control module, and sends to UE; Reception comes from the RRC connection request of UE, and this request is sent to control module; Under the notice of control module, indicate RRC connection foundation to UE and finish.

In the technical scheme of present embodiment, receive this C-RNTI that inserts at random of network side distribution at UE after, UE and eNB utilize same algorithm, according to the UE sign of initiating this UE and the C-RNTI that receives, calculate the exclusive CA-RNTI of this UE, as the temporary mark that is different from other UE, after this eNB utilizes this temporary mark to carry out addressing, finishes the subsequent operation that inserts at random with UE.For each UE, CA-RNTI in the present embodiment is different, therefore can access interference at random not appear because of a plurality of UE select same targeting sequencing, and UE is when receiving the message that comes from network side, only can determine by the addressing sign whether self is the real recipient of this message, and need not to carry out the operation that DL_SCH message is resolved, shorten the time of inserting at random effectively.

Embodiment 2

Also at the wireless communication system of tdd mode, as different from Example 1, temporary mark is the random number that UE generates to present embodiment in the present embodiment.

Fig. 6 shows the flow chart of accidental access method in the present embodiment.Referring to Fig. 6, this method comprises:

In step 601～602, UE selects this targeting sequencing that uses in inserting at random, and this targeting sequencing is sent to eNB by random access leader sequence message, and request is linked into network side; ENB is that UE distributes corresponding C-RNTI according to the targeting sequencing that receives, and the C-RNTI that is distributed is carried in the random access leader sequence response message that shows permission UE access, returns to UE.

Two steps herein are identical to the operation in 402 with the step 401 among the embodiment 1.

In step 603～604, UE generates and preserves this random number of using in inserting at random, and sends the scheduling request information of the random number that carries C-RNTI and generated to eNB, and request eNB distributes ascending resource.

Here need not to calculate temporary mark, but take to avoid to distinguish the situation of UE for the mode that UE generates random number by the algorithm that sets in advance.Because the probability that random number repeats is very low, therefore, can guarantee in the present embodiment that each UE that initiates simultaneously to insert at random by same access channel has unique temporary mark.

In step 605～606, eNB obtains C-RNTI and random number from the scheduling request information that receives, and this C-RNTI and random number are bound together; Be UE distribution ascending resource, and ascending resource information is carried on in the dispatch request response message of this random number as the addressing sign, send to the UE of this random number correspondence; Then, UE obtains the random number as the addressing sign from this dispatch request response message, judge whether the random number that is obtained is consistent with the random number of self preserving, if, then continue execution in step 607, otherwise, abandon this dispatch request response message, and wait for the network side response or finish this random access procedure.

In step 607～608, UE takies ascending resource according to the ascending resource information that receives, and sends RRC connection request message to eNB, and request is set up RRC with network side and is connected, and eNB returns the RRC connection response message to UE after finishing the RRC establishment of connection.

So far, finish random access procedure in the present embodiment.

Present embodiment can use being used to shown in Fig. 5 to carry out the random access system of above-mentioned flow process, and is just different among the function of each module and the embodiment 1.Referring to Fig. 5, this random access system comprises: UE and eNB.Wherein, UE comprises memory module, calculating and comparing module and communication module; ENB comprises memory module, control module and communication module.

For UE, memory module is used to preserve predetermined targeting sequencing, and receives and preserve the random number that the C-RNTI that comes from calculating and comparing module and this use in inserting at random.Calculating and comparing module is used for selecting a targeting sequencing from the targeting sequencing that memory module is preserved, and this targeting sequencing is sent to communication module; Reception comes from the C-RNTI of communication module, generates the random number that this uses in inserting at random, sends this C-RNTI and random number to memory module and communication module; Reception comes from the random number of communication module, random number that receives and the random number that reads from memory module are compared, when both are consistent, the notification communication module is resolved the message that carries this random number that receives, when both were inconsistent, the notification communication module abandoned the message that carries this random number that receives.Communication module is used to receive the targeting sequencing that comes from calculating and comparing module, and this targeting sequencing is sent to eNB, and the request access network; Reception comes from the response to access network that carries C-RNTI of eNB, and the C-RNTI that receives is sent to calculating and comparing module; Reception comes from the C-RNTI and the random number of calculating and comparing module, and this random number and C-RNTI are sent to eNB and request distribution ascending resource; Reception comes from the message that carries random number and ascending resource information of eNB, this random number is sent to calculating and comparing module, under the notice of calculating and comparing module, take resource and ask eNB to set up the RRC connection according to ascending resource information, perhaps abandon the message that carries random number and ascending resource information.

For eNB, memory module is used to preserve the corresponding relation of predetermined targeting sequencing and C-RNTI, and receives and preserve and come from the C-RNTI of control module and the binding relationship of random number.Control module is used to receive the targeting sequencing that comes from communication module, reads corresponding relation from memory module, determines the C-RNTI of this targeting sequencing correspondence, and this C-RNTI is sent to communication module; Random number and C-RNTI that reception comes from communication module bind this random number and C-RNTI, and this binding relationship is sent to memory module, for this UE distributes ascending resource, and this random number and ascending resource information are sent to communication module; Reception comes from the RRC connection request of communication module, set up UE and be connected with the RRC of network side, and notification communication module RRC connection foundation is finished.Communication module is used to receive the targeting sequencing that comes from UE, and this targeting sequencing is sent to control module; Reception comes from the C-RNTI of control module, this C-RNTI is sent to UE and notify UE to allow to insert; Reception comes from the random number of UE and the request of C-RNTI and distribution ascending resource, and is transmitted to control module; Reception comes from the random number and the ascending resource information of control module, and sends to UE; Reception comes from the RRC connection request of UE, and this request is sent to control module; Under the notice of control module, indicate RRC connection foundation to UE and finish.

In the present embodiment, receive this C-RNTI that inserts at random of network side distribution at UE after, UE determines the temporary mark that this inserts at random by the mode that generates random number, and random number and C-RNTI that eNB will come from UE bind, after this eNB utilizes this temporary mark to carry out addressing, finishes the subsequent operation that inserts at random with UE.For each UE, random number in the present embodiment is different, therefore can access interference at random not appear because of a plurality of UE select same targeting sequencing, and UE is when receiving the message that comes from network side, only can determine by the addressing sign whether self is the real recipient of this message, and need not to carry out the operation of resolving message, shorten the time of inserting at random effectively.

Embodiment 3

Present embodiment is also at the tdd mode wireless communication system, and the temporary mark of present embodiment is the CA-RNTI that utilizes UE sign and C-RNTI to calculate.As different from Example 1, UE calculates CA-RNTI in the present embodiment, and this CA-RNTI is directly sent to eNB, so that carry out addressing in subsequent operation.

Fig. 7 shows the flow chart of accidental access method in the present embodiment.Referring to Fig. 7, this method comprises:

In step 701～702, UE selects this targeting sequencing that uses in inserting at random, and this targeting sequencing is sent to eNB by random access leader sequence message, and request is linked into network side; ENB is that UE distributes corresponding C-RNTI according to the targeting sequencing that receives, and the C-RNTI that is distributed is carried in the random access leader sequence response message that shows permission UE access, returns to UE.

In step 703～704, UE according to predetermined CA-RNTI algorithm, obtains and preserves the CA-RNTI of this UE correspondence according to UE sign of self and the C-RNTI that receives, and send the scheduling request information that carries C-RNTI and CA-RNTI to eNB, request eNB distributes ascending resource.

Two steps herein are similar to the operation in 404 to the step 403 among the embodiment 1, just at first calculate CA-RNTI in the present embodiment, and then send scheduling request information, and that carry in this message is CA-RNTI, but not the UE sign.

In step 705～706, eNB obtains C-RNTI and CA-RNTI from the scheduling request information that receives, and this C-RNTI and CA-RNTI are bound together; Be UE distribution ascending resource, and ascending resource information is carried on in the dispatch request response message of CA-RNTI as the addressing sign that receives, send to the UE of CA-RNTI correspondence; Then, UE obtains the CA-RNTI as the addressing sign from this dispatch request response message, judge whether the CA-RNTI that is obtained is consistent with the CA-RNTI that self preserves, if, then continue execution in step 707, otherwise, abandon this dispatch request response message, and wait for the network side response or finish this random access procedure.

ENB need not to calculate voluntarily CA-RNTI herein, but C-RNTI that comparatively simply UE is reported and CA-RNTI bind, so that carry out addressing in the subsequent step during issuing message.And UE is relatively more identical among operation and the embodiment 1 of CA-RNTI here.In the present embodiment, UE only just can finish the reception of message by the addressing sign or abandon, and need not to carry out the operation of resolving message, and it is lower to shorten turn-on time and complicated operation degree.

In step 707～708, UE takies ascending resource according to the ascending resource information that receives, and sends RRC connection request message to eNB, and request is set up RRC with network side and is connected, and eNB returns the RRC connection response message to UE after finishing the RRC establishment of connection.

So far, finish random access procedure in the present embodiment.

Present embodiment still adopts random access system shown in Figure 5 to realize above-mentioned access process at random, but different among the function of each module and the embodiment 1.Referring to Fig. 5, this random access system comprises: UE and eNB.Wherein, UE comprises memory module, calculating and comparing module and communication module; ENB comprises memory module, control module and communication module.

For UE, memory module is used to preserve predetermined CA-RNTI algorithm, targeting sequencing and UE sign, and receives and preserve the CA-RNTI that this that come from calculating and comparing module uses in inserting at random.Calculating and comparing module is used for selecting a targeting sequencing from the targeting sequencing that memory module is preserved, and this targeting sequencing is sent to communication module; Reception comes from the C-RNTI of communication module, from memory module, read CA-RNTI algorithm and UE sign, according to the algorithm that reads, utilize UE sign and C-RNTI obtain this insert at random in the CA-RNTI of use, send this CA-RNTI to memory module, and C-RNTI and CA-RNTI are sent to communication module; Reception comes from the CA-RNTI of communication module, CA-RNTI that receives and the CA-RNTI that reads from memory module are compared, when both are consistent, the notification communication module is resolved the message that carries this CA-RNTI that receives, when both were inconsistent, the notification communication module abandoned the message that carries this CA-RNTI that receives.Communication module is used to receive the targeting sequencing that comes from calculating and comparing module, and this targeting sequencing is sent to eNB, and the request access network; Reception comes from the response to access network that carries C-RNTI of eNB, and the C-RNTI that receives is sent to calculating and comparing module; Reception comes from the C-RNTI and the CA-RNTI of calculating and comparing module, and this C-RNTI and CA-RNTI are sent to eNB and request distribution ascending resource; Reception comes from the message that carries CA-RNTI and ascending resource information of eNB, this CA-RNTI is sent to calculating and comparing module, under the notice of calculating and comparing module, take resource and ask eNB to set up the RRC connection according to ascending resource information, perhaps abandon the message that carries CA-RNTI and ascending resource information.

For eNB, memory module is used to preserve the corresponding relation of predetermined targeting sequencing and C-RNTI, and receives and preserve and come from the C-RNTI of control module and the binding relationship of CA-RNTI.Control module is used to receive the targeting sequencing that comes from communication module, reads corresponding relation from memory module, determines the C-RNTI of this targeting sequencing correspondence, and this C-RNTI is sent to communication module; C-RNTI and CA-RNTI that reception comes from communication module bind this C-RNTI and CA-RNTI, and binding relationship are sent to memory module, for this UE distributes ascending resource, CA-RNTI and ascending resource information are sent to communication module; Reception comes from the RRC connection request of communication module, set up UE and be connected with the RRC of network side, and notification communication module RRC connection foundation is finished.Communication module is used to receive the targeting sequencing that comes from UE, and this targeting sequencing is sent to control module; Reception comes from the C-RNTI of control module, this C-RNTI is sent to UE and notify UE to allow to insert; Reception comes from the request of C-RNTI and CA-RNTI and the distribution ascending resource of UE, and is transmitted to control module; Reception comes from the CA-RNTI and the ascending resource information of control module, and sends to UE; Reception comes from the RRC connection request of UE, and this request is sent to control module; Under the notice of control module, indicate RRC connection foundation to UE and finish.

Present embodiment is determined exclusive CA-RNTI by being calculated as UE, and as the temporary mark that is different from other UE, after this eNB utilizes this temporary mark to carry out addressing, finishes the subsequent operation that inserts at random with UE, thereby shortens the time of inserting at random effectively.Further, eNB need not to calculate voluntarily CA-RNTI in the present embodiment, but the C-RNTI and the CA-RNTI that will come from UE simply bind and preserve, and operates more simply, is convenient to realize.

Three above embodiment all can be accidental access method under the tdd mode and system, also can insert at random based on above-mentioned thought under Frequency Division Duplexing (FDD) (FDD) pattern.

Embodiment 4

Present embodiment is at the wireless communication system of fdd mode, and the temporary mark of present embodiment is the CA-RNTI that utilizes UE sign and C-RNTI to calculate.

Fig. 8 shows the flow chart of accidental access method in the present embodiment.Referring to Fig. 8, this method comprises:

In step 801～802, UE selects this targeting sequencing that uses in inserting at random, and this targeting sequencing is sent to eNB by random access leader sequence message, and request is linked into network side; ENB is the ascending resource that UE distributes corresponding C-RNTI and this to use in inserting at random according to the targeting sequencing that receives, and the C-RNTI that distributed and ascending resource information is carried on shows and allow to return to UE in the random access leader sequence response message that UE inserts.

Under fdd mode, after eNB is known UE request access network, when distributing C-RNTI, a part of ascending resource is also distributed to UE for this UE, ask separately with regard to resource requirement and need not UE.

In step 803～804, UE takies ascending resource according to the ascending resource information that receives, according to UE sign of self and the C-RNTI that receives, according to predetermined CA-RNTI algorithm, obtain and preserve the CA-RNTI of this UE correspondence, and send the RRC connection request message that carries C-RNTI and UE sign to eNB, request is set up RRC with network side and is connected.

Here adopting the mode identical with embodiment 1 is that UE calculates unique CA-RNTI, as this temporary mark that inserts at random.Owing to obtained ascending resource information this moment, therefore can directly ask to set up RRC and connect from network side.For eNB also can obtain the CA-RNTI consistent with UE, UE carries in RRC connection request message and calculates CA-RNTI required UE sign and C-RNTI.

Certainly, UE calculating CA-RNTI is connected scheduling message with transmission RRC and does not have strict order in the present embodiment, in other words, also can send RRC connection request message to eNB earlier, and then UE calculates CA-RNTI again.

In step 805～807, eNB obtains C-RNTI and UE sign from the RRC connection request message that receives, and obtains the CA-RNTI of UE correspondence according to predetermined CA-RNTI algorithm; Set up UE and be connected, and send with CA-RNTI to the UE of CA-RNTI correspondence and to solve message, indicate and solve at random access interference or RRC and connect to set up and finish as the RRC conflict of addressing sign with RRC between the network side; Then, UE solves the CA-RNTI that obtains the message as the addressing sign from this RRC conflict, judge whether the CA-RNTI that is obtained is consistent with the CA-RNTI that self preserves, if, then continue to resolve this RRC and connect conflict solution message, otherwise, abandon this RRC connection response message, and wait for the network side response or finish this random access procedure.

So far, finish random access procedure in the present embodiment.

Present embodiment still can adopt random access system shown in Figure 5 to realize above-mentioned access process at random, and just the function of each module is slightly different with embodiment 1.Referring to Fig. 5, the random access system in the present embodiment comprises: UE and eNB.Wherein, UE comprises memory module, calculating and comparing module and communication module; ENB comprises memory module, control module and communication module.

For UE, memory module is used to preserve predetermined CA-RNTI algorithm, targeting sequencing and UE sign, and receives and preserve the CA-RNTI that this that come from calculating and comparing module uses in inserting at random.Calculating and comparing module is used for selecting a targeting sequencing from the targeting sequencing that memory module is preserved, and this targeting sequencing is sent to communication module; Reception comes from the C-RNTI of communication module, from memory module, read CA-RNTI algorithm and UE sign, according to the algorithm that reads, utilize UE sign and C-RNTI obtain this insert at random in the CA-RNTI of use, send this CA-RNTI to memory module, and UE sign and C-RNTI are sent to communication module; Reception comes from the CA-RNTI of communication module, CA-RNTI that receives and the CA-RNTI that reads from memory module are compared, when both are consistent, the notification communication module is resolved the message that carries this CA-RNTI that receives, when both were inconsistent, the notification communication module abandoned the message that carries this CA-RNTI that receives.Communication module is used to receive the targeting sequencing that comes from calculating and comparing module, and this targeting sequencing is sent to eNB, and the request access network; Reception comes from the response to access network that carries C-RNTI and ascending resource information of eNB, and the C-RNTI that receives is sent to calculating and comparing module, and takies resource according to this ascending resource information; Reception comes from the UE sign and the C-RNTI of calculating and comparing module, this UE sign is sent to eNB and asks to set up RRC with C-RNTI be connected; The showing of CA-RNTI that carry that reception comes from eNB solves access interference at random or RRC and connects and set up the message of finishing, this CA-RNTI is sent to calculating and comparing module, under the notice of calculating and comparing module, resolve the message that this carries CA-RNTI, perhaps abandon this message.

For eNB, memory module is used to preserve the corresponding relation of predetermined CA-RNTI algorithm and targeting sequencing and C-RNTI, and receives and preserve the CA-RNTI that comes from control module.Control module is used to receive the targeting sequencing that comes from communication module, reads corresponding relation from memory module, determines the C-RNTI of this targeting sequencing correspondence, for this UE distributes ascending resource, and this C-RNTI and ascending resource information is sent to communication module; Reception comes from UE sign and the C-RNTI and the RRC connection request of communication module, from memory module, read the CA-RNTI algorithm, according to the algorithm that reads, UE sign and C-RNTI that utilization receives calculate the CA-RNTI that UE uses in this inserts at random, setting up this UE is connected with RRC between the network side, CA-RNTI is sent to communication module, and the notification communication module at random access interference solved or RRC connect to set up and to finish.Communication module is used to receive the targeting sequencing that comes from UE, and this targeting sequencing is sent to control module; Reception comes from the C-RNTI and the ascending resource information of control module, and this C-RNTI and ascending resource information are sent to UE and notify UE permission access; Reception comes from UE sign and the C-RNTI of UE and sets up the RRC connection requests, and is transmitted to control module; The CA-RNTI that reception comes from control module with show at random that access interference has solved or RRC is connected and sets up the notice of finishing, this CA-RNTI is sent to UE, and indicates at random that access interference has solved or RRC connects to set up and finishes to UE.

Embodiment 5

Also at the wireless communication system of fdd mode, as different from Example 4, temporary mark is the random number that UE generates to present embodiment in the present embodiment.

Fig. 9 shows the flow chart of accidental access method in the present embodiment.Referring to Fig. 9, this method comprises:

In step 901～902, UE selects this targeting sequencing that uses in inserting at random, and this targeting sequencing is sent to eNB by random access leader sequence message, and request is linked into network side; ENB is the ascending resource that UE distributes corresponding C-RNTI and this to use in inserting at random according to the targeting sequencing that receives, and the C-RNTI that distributed and ascending resource information is carried on shows and allow to return to UE in the random access leader sequence response message that UE inserts.

Two steps herein are identical to the operation in 1002 with the step 1001 among the embodiment 4.

In step 903～904, UE takies ascending resource according to the ascending resource information that receives, generate and preserve the random number that this uses in inserting at random, and send the RRC connection request message of the random number that carries C-RNTI and generated to eNB, request is set up RRC with network side and is connected.

Here adopt the mode identical to generate random number as temporary mark with embodiment 2.

In step 905～906, eNB obtains C-RNTI and random number from the RRC connection request message that receives, and this C-RNTI and random number are bound together; Set up UE and be connected, and send with CA-RNTI to the UE of this random number correspondence and to solve message, indicate at random that access interference has solved or RRC connects to set up and finishes as the RRC conflict of addressing sign with RRC between the network side; Then, UE solves the random number of obtaining the message as the addressing sign from this conflict, judge whether the random number that is obtained is consistent with the random number of self preserving, if, then continue to resolve this message, otherwise, abandon this RRC conflict and solve message, and wait for the network side response or finish this random access procedure.

So far, finish random access procedure in the present embodiment.

Present embodiment can adopt random access system shown in Figure 5 to carry out above-mentioned access process at random, and is just slightly different among the function of each module and the embodiment 2.Referring to Fig. 5, this random access system comprises: UE and eNB.Wherein, UE comprises memory module, calculating and comparing module and communication module; ENB comprises memory module, control module and communication module.

For UE, memory module is used to preserve predetermined targeting sequencing, and receives and preserve the random number that the C-RNTI that comes from calculating and comparing module and this use in inserting at random.Calculating and comparing module is used for selecting a targeting sequencing from the targeting sequencing that memory module is preserved, and this targeting sequencing is sent to communication module; Reception comes from the C-RNTI of communication module, generates the random number that this uses in inserting at random, sends this C-RNTI and random number to memory module and communication module; Reception comes from the random number of communication module, random number that receives and the random number that reads from memory module are compared, when both are consistent, the notification communication module is resolved the message that carries this random number that receives, when both were inconsistent, the notification communication module abandoned the message that carries this random number that receives.Communication module is used to receive the targeting sequencing that comes from calculating and comparing module, and this targeting sequencing is sent to eNB, and the request access network; Reception comes from the response to access network that carries C-RNTI and ascending resource information of eNB, and the C-RNTI that receives is sent to calculating and comparing module, and takies resource according to this ascending resource information; Reception comes from the C-RNTI and the random number of calculating and comparing module, this random number is sent to eNB and asks to set up RRC with C-RNTI be connected; Reception comes from the message that access interference has solved or RRC connection foundation is finished at random that shows that carries random number of eNB, this random number is sent to calculating and comparing module, under the notice of calculating and comparing module, resolve the message that this carries CA-RNTI, perhaps abandon this message.

For eNB, memory module is used to preserve the corresponding relation of predetermined targeting sequencing and C-RNTI, and receives and preserve and come from the C-RNTI of control module and the binding relationship of random number.Control module is used to receive the targeting sequencing that comes from communication module, reads corresponding relation from memory module, determines the C-RNTI of this targeting sequencing correspondence, for this UE distributes ascending resource, and this C-RNTI and ascending resource information is sent to communication module; Reception comes from the random number and the C-RNTI of communication module, this random number and C-RNTI are bound, this binding relationship is sent to memory module, setting up this UE is connected with RRC between the network side, this random number is sent to communication module, and the notification communication module at random access interference solved or RRC connect to set up and to finish.Communication module is used to receive the targeting sequencing that comes from UE, and this targeting sequencing is sent to control module; Reception comes from the C-RNTI and the ascending resource information of control module, and this C-RNTI and ascending resource information are sent to UE and notify UE permission access; Reception comes from random number and the C-RNTI of UE and sets up the RRC connection requests, and is transmitted to control module; Reception comes from the random number of control module and shows that access interference has at random solved or RRC connects and sets up the notice of finishing, and this random number is sent to UE, and indicates at random that access interference has solved or RRC connects to set up and finishes to UE.

Embodiment 6

Present embodiment is also at the fdd mode wireless communication system, and the temporary mark of present embodiment is the CA-RNTI that utilizes UE sign and C-RNTI to calculate.As different from Example 4, UE calculates CA-RNTI in the present embodiment, and this CA-RNTI is directly sent to eNB, so that carry out addressing in subsequent operation.

Figure 10 shows the flow chart of accidental access method in the present embodiment.Referring to Figure 10, this method comprises:

In step 1001～1002, UE selects this targeting sequencing that uses in inserting at random, and this targeting sequencing is sent to eNB by random access leader sequence message, and request is linked into network side; ENB is the ascending resource that UE distributes corresponding C-RNTI and this to use in inserting at random according to the targeting sequencing that receives, and the C-RNTI that distributed and ascending resource information is carried on shows and allow to return to UE in the random access leader sequence response message that UE inserts.

In step 1003～1004, UE takies ascending resource according to the ascending resource information that receives, according to UE sign of self and the C-RNTI that receives, according to predetermined CA-RNTI algorithm, obtain and preserve the CA-RNTI of this UE correspondence, and send the RRC connection request message that carries C-RNTI and CA-RNTI to eNB, request is set up RRC with network side and is connected.

In step 1005～1007, eNB obtains C-RNTI and CA-RNTI from the RRC connection request message that receives, and this C-RNTI and CA-RNTI are bound together; Set up UE and be connected, and send with CA-RNTI to the UE of CA-RNTI correspondence and to solve message, indicate at random that access interference has solved or RRC connects to set up and finishes as the RRC conflict of addressing sign with RRC between the network side; Then, UE solves the CA-RNTI that obtains the message as the addressing sign from this RRC conflict, judge whether the CA-RNTI that is obtained is consistent with the CA-RNTI that self preserves, if, then continue to resolve this message, otherwise, abandon this RRC conflict and solve message, and wait for the network side response or finish this random access procedure.

ENB need not to calculate voluntarily CA-RNTI in the present embodiment, but C-RNTI that comparatively simply UE is reported and CA-RNTI bind, so that carry out addressing when issuing message.And UE is relatively more identical among operation and the embodiment 4 of CA-RNTI here.In the present embodiment, UE only just can finish the reception of message by the addressing sign or abandon, and need not to carry out the operation of resolving message, and it is lower to shorten turn-on time and complicated operation degree.

So far, finish random access procedure in the present embodiment.

Present embodiment still can adopt random access system shown in Figure 5 to realize above-mentioned access process at random, and just the function of each module is slightly different with embodiment 3.Referring to Fig. 5, this random access system comprises: UE and eNB.Wherein, UE comprises memory module, calculating and comparing module and communication module; ENB comprises memory module, control module and communication module.

For UE, memory module is used to preserve predetermined CA-RNTI algorithm, targeting sequencing and UE sign, and receives and preserve the CA-RNTI that this that come from calculating and comparing module uses in inserting at random.Calculating and comparing module is used for selecting a targeting sequencing from the targeting sequencing that memory module is preserved, and this targeting sequencing is sent to communication module; Reception comes from the C-RNTI of communication module, from memory module, read CA-RNTI algorithm and UE sign, according to the algorithm that reads, utilize UE sign and C-RNTI obtain this insert at random in the CA-RNTI of use, send this CA-RNTI to memory module, and C-RNTI and CA-RNTI are sent to communication module; Reception comes from the CA-RNTI of communication module, CA-RNTI that receives and the CA-RNTI that reads from memory module are compared, when both are consistent, the notification communication module is resolved the message that carries this CA-RNTI that receives, when both were inconsistent, the notification communication module abandoned the message that carries this CA-RNTI that receives.Communication module is used to receive the targeting sequencing that comes from calculating and comparing module, and this targeting sequencing is sent to eNB, and the request access network; Reception comes from the response to access network that carries C-RNTI and ascending resource information of eNB, and the C-RNTI that receives is sent to calculating and comparing module, and takies resource according to this ascending resource information; Reception comes from the C-RNTI and the CA-RNTI of calculating and comparing module, this C-RNTI and CA-RNTI is sent to eNB and ask to set up RRC be connected; Reception comes from the message that access interference has solved or RRC connection foundation is finished at random that shows that carries CA-RNTI of eNB, this CA-RNTI is sent to calculating and comparing module, under the notice of calculating and comparing module, resolve the message that this carries CA-RNTI, perhaps abandon this message.

For eNB, memory module is used to preserve the corresponding relation of predetermined targeting sequencing and C-RNTI, and receives and preserve and come from the C-RNTI of control module and the binding relationship of CA-RNTI.Control module is used to receive the targeting sequencing that comes from communication module, reads corresponding relation from memory module, determines the C-RNTI of this targeting sequencing correspondence, for this UE distributes ascending resource, and this C-RNTI and ascending resource information is sent to communication module; Reception comes from C-RNTI and the CA-RNTI and the RRC connection request of communication module, this C-RNTI and CA-RNTI are bound, and binding relationship sent to memory module, setting up this UE is connected with RRC between the network side, CA-RNTI is sent to communication module, and the notification communication module at random access interference solved or RRC connect to set up and to finish.Communication module is used to receive the targeting sequencing that comes from UE, and this targeting sequencing is sent to control module; Reception comes from the C-RNTI and the ascending resource information of control module, and this C-RNTI and ascending resource information are sent to UE and notify UE permission access; Reception comes from C-RNTI and the CA-RNTI of UE and sets up the RRC connection requests, and is transmitted to control module; Reception comes from the CA-RNTI of control module and shows that access interference has at random solved or RRC connects and sets up the notice of finishing, and this CA-RNTI is sent to UE, and indicates at random that access interference has solved or RRC connects to set up and finishes to UE.

In six above-mentioned embodiment, by utilizing the mode of UE and C-RNTI calculating CA-RNTI or generation random number, for UE determines unique temporary mark.To those skilled in the art, unique temporary mark situation all inequality of not only representing each UE herein, but also comprise that the probability that temporary mark repeats is low to moderate negligible situation.In addition, also can use the scheme of the above embodiments 4 to 6 to realize inserting at random under the tdd mode.

The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being made, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims

1. an accidental access method is characterized in that, this method comprises:

2. the method for claim 1, it is characterized in that, the described UE of steps A initiates to insert at random to comprise: UE selects this targeting sequencing that uses in inserting at random, and this targeting sequencing is sent to the base station by random access leader sequence message, and request is linked into network side;

3. method as claimed in claim 2 is characterized in that, the exclusive temporary mark of described UE is calculating Radio Network Temporary Identifier CA-RNTI, and step B is described to be comprised for this UE determines exclusive temporary mark:

4. method as claimed in claim 3 is characterized in that, the described base station of step B is mutual according to this temporary mark and UE, sets up the radio resource control RRC connection and comprises:

5. method as claimed in claim 3 is characterized in that, the described base station of step B is mutual according to this temporary mark and UE, sets up the radio resource control RRC connection and comprises:

6. method as claimed in claim 2 is characterized in that, described temporary mark is a random number, and step B is described to be comprised for this UE determines exclusive temporary mark: UE generates and preserves this random number of using in inserting at random;

7. method as claimed in claim 2 is characterized in that, described base station returns to the random access leader sequence response message before the UE, further comprises: for UE distributes ascending resource;

8. method as claimed in claim 7 is characterized in that, described temporary mark is CA-RNTI, and step B is described to be comprised for this UE determines exclusive temporary mark:

9. method as claimed in claim 8 is characterized in that, the described base station of step B is mutual according to this temporary mark and UE, sets up the radio resource control RRC connection and comprises:

10. method as claimed in claim 8 is characterized in that, the described base station of step B is mutual according to this temporary mark and UE, sets up the radio resource control RRC connection and comprises:

11. method as claimed in claim 7 is characterized in that, described temporary mark is a random number, and step B is described to be comprised for this UE determines exclusive temporary mark: UE generates and preserves this random number of using in inserting at random;

12. a random access system comprises user equipment (UE) and base station, it is characterized in that,

Described UE request base station allows the access at random of this UE, receives the notice that the permission that comes from the base station inserts, and obtains the exclusive temporary mark of this UE, utilizes this temporary mark and base station mutual, and sets up radio resource control RRC with network side and be connected;

The reception of described base station comes from the request of access at random of UE, and notice UE allows to insert, and obtains the temporary mark of this UE correspondence, and is mutual according to this temporary mark and UE, and cooperates UE to set up the RRC connection.

13. system as claimed in claim 12 is characterized in that, described UE comprises: memory module, calculating and comparing module and communication module, wherein,

14. system as claimed in claim 13 is characterized in that, described base station comprises memory module, control module and communication module, wherein,

15. system as claimed in claim 12 is characterized in that, described UE comprises: memory module, calculating and comparing module and communication module, wherein,

16. system as claimed in claim 15 is characterized in that, described base station comprises memory module, control module and communication module, wherein,

17. system as claimed in claim 12 is characterized in that, described UE comprises: memory module, calculating and comparing module and communication module, wherein

18. system as claimed in claim 17 is characterized in that, described base station comprises: memory module, control module and communication module, wherein,

19. system as claimed in claim 12 is characterized in that, described UE comprises: memory module, calculating and comparing module and communication module, wherein,

20. system as claimed in claim 19 is characterized in that, described base station comprises: memory module, control module and communication module, wherein,

21. system as claimed in claim 12 is characterized in that, described UE comprises: memory module, calculating and comparing module and communication module, wherein,

22. system as claimed in claim 21 is characterized in that, described base station comprises: memory module, control module and communication module, wherein,

23. system as claimed in claim 12 is characterized in that, described UE comprises: memory module, calculating and comparing module and communication module, wherein,

24. system as claimed in claim 23 is characterized in that, described base station comprises: memory module, control module and communication module, wherein,