CN101547423B - Random access method in multi-carrier time-division synchronous code division multiple access system - Google Patents
Random access method in multi-carrier time-division synchronous code division multiple access system Download PDFInfo
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- CN101547423B CN101547423B CN2008100877662A CN200810087766A CN101547423B CN 101547423 B CN101547423 B CN 101547423B CN 2008100877662 A CN2008100877662 A CN 2008100877662A CN 200810087766 A CN200810087766 A CN 200810087766A CN 101547423 B CN101547423 B CN 101547423B
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Abstract
The invention provides a random access method in a multi-carrier time-division synchronous code division multiple access (CDMA) system. The method comprises the following steps that: a radio network controller RNC broadcasts a message of a physical random access channel PRACH on a main carrier frequency in a system message of a UU interface; user equipment UE initiates access to the PRACH on the main carrier frequency; the RNC sends a special signaling message of the corresponding UU interface to the UE; if the RNC configures the UE on a minor carrier frequency, the special signaling message of the UU interface carries the parameter information of the PRACH configured on the minor carrier frequency for the UE; and after the UE receives the special signaling message, if the special signaling message carries the parameter information of the PRACH configured on the minor carrier frequency, random access is executed on the PRACH configured on the minor carrier frequency. The method can meet the need of the UE to receive/sending data on the same carrier frequency.
Description
Technical field
The present invention relates to moving communicating field, particularly relate to the method that inserts at random in many a kind of multi-carrier TD-SCDMA (TD SDMA) systems.
Background technology
In the TD-SCDMA system; Random access procedure is as the important step of wireless access process; UE (subscriber equipment) the access network application first that both can be used for being in idle condition is professional, and the UE that also can be used for being in connection status CELL_PCH (cell _ paging channel), CELL_FACH (sub-district _ forward access channel) state sets up up the connection with network again based on the needs of business such as page response, transmitting uplink data application.
A typical random access procedure is as shown in Figure 1 in the prior art; UE sends uplink synchronous code and gives Node B (base station) on ascending pilot channel UpPCH; Node B receives the back through the affirmation of physical access channel FPACH channel feedback, and UE inserts on Physical Random Access Channel PRACH after receiving and confirming at random.In the present multi-carrier TD-SCDMA system of CCSA (China's Telecommunication's standardization agreement), only configuration and the use on main carrier of PRACH channel.
Along with the TD-SCDMA system strengthens FACH and the introducing that strengthens the PCH technology, the UE that is in CELL_FACH or CELL_PCH state can carry out the reception of downlink service data on HS-DSCH (high speed descending sharing channel).And in overloading TD-SCDMA system frequently, the HS-DSCH channel can dispose on assistant carrier frequency, and therefore being in the UE that strengthens CELL_FACH or CELL_PCH state can work on assistant carrier frequency.If these UE at CELL_FACH that works on the assistant carrier frequency or CELL_PCH state need respond paging or carry out on line number pass, must initiate earlier to insert at random, and the PRACH channel be configured on the main carrier frequency.This has just caused UE to stride hard case that carrier frequency carries out business datum reception and uplink random access simultaneously.
Summary of the invention
The technical problem that the present invention will solve provides the method that inserts at random in a kind of multi-carrier TD-SCDMA system, can satisfy the needs of UE at same carrier frequency data transmit-receive.
In order to address the above problem, the invention provides the method that inserts at random in a kind of multi-carrier time-division synchronous code division multiple access code system, comprising:
Radio network controller (RNC) is broadcasted the information of the Physical Random Access Channel PRACH on the main carrier frequency in the system message of UU mouth;
The PRACH of user equipment (UE) on main carrier frequency initiates to insert;
After the access, RNC sends the dedicated signaling message of corresponding UU mouth and gives UE; If RNC is configured in UE on the assistant carrier frequency, then in the dedicated signaling message of UU mouth, carry the parameter information of the PRACH that on assistant carrier frequency, disposes for this UE;
After UE receives dedicated signaling message,, then, this inserts at random on being disposed at the PRACH of assistant carrier frequency if wherein carried the parameter information of the PRACH that on assistant carrier frequency, disposes.
Further, the parameter of the parameter of the PRACH on the said assistant carrier frequency and the PRACH on the main carrier frequency is identical or different.
Further, described method also comprises:
If RNC is configured in UE on the main carrier frequency, then in the dedicated signaling message of UU mouth, do not carry the parameter information of PRACH;
If do not carry the parameter information of PRACH in the dedicated signaling message that UE receives, then UE inserts at the PRACH of main carrier frequency at random.
Further, the dedicated signaling message of said UU mouth comprises:
The Radio Resource control connection is set up message RRC CONNECTION SETUP, radio bearer is set up message RADIO BEARER SETUP, radio bearer reconfiguration message RADIO BEARERRECONFIGURATION, transmission channel reconfiguration message TRANSPORT CHANNELRECONFIGURATION, physical channel reconfiguration message PHYSICAL CHANNELRECONFIGURATION, cell update acknowledgement message CELL UPDATE CONFIRM.
Further; Said dedicated signaling message is radio resource control RRC dedicated signaling message, and the frequency of the assistant carrier frequency at PRACH place is indicated by the physical access channel carrier information FPACH Frequency Info cell among the multicarrier information Multi-frequency Info in the RRC dedicated signaling message.
Further, the RNC dedicated signaling message of sending corresponding UU mouth is meant to UE: the corresponding UU mouth of employed message dedicated signaling message when RNC sends and initiates to insert with UE.
Further, if RNC is configured in UE on the assistant carrier frequency, the parameter information that then in the dedicated signaling message of UU mouth, carries the PRACH that on assistant carrier frequency, disposes for this UE is meant:
RNC is in the RRC of UU mouth CONNECTION SETUP, RADIO BEARER SETUP, RADIO BEARER RECONFIGURATION, TRANSPORT CHANNELRECONFIGURATION, PHYSICAL CHANNEL RECONFIGURATION, these dedicated signaling message of CELLUPDATE CONFIRM; Increase the optional expansion of access control at random cell " Random Access Control Extension ", comprise the parameter that is configured in the Physical Random Access Channel on the assistant carrier frequency in this cell;
If UE is disposed at assistant carrier frequency, then in issuing the dedicated signaling message of UE, carry " RandomAccess Control Extension " cell, the parameter information of the PRACH that disposes on this assistant carrier frequency is informed UE.
Further, if UE is disposed at main carrier frequency, then in issuing the dedicated signaling message of UE, do not carry " Random Access Control Extension " cell.
Further; Comprise in said " Random Access Control Extension " cell that the PRACH information type selects CHOICE PRACH Info Type cell, comprise two options in this cell: PRACH information PRACH Information cell with System information block 5 in the identical same as of PRACH PRACH in SIB5 cell;
If RNC will then select the PRACHInformation cell for the PRACH parameter channel configuration on the assistant carrier frequency; If it is identical with the PRACH channel parameter of main carrier frequency among the System information block 5SIB5 that RNC will be arranged to the PRACH channel parameter on the assistant carrier frequency, then select same as PRACHin SIB5 cell.
Further, also comprise in said " Random Access Control Extension " cell when RNC selects PRACH Information cell the parameter that will dispose; These parameters comprise:
PRACH information PRACH info, transmission channel sign Transport channel identity, RACH TFS Transport Format Set RACH TFS, RACH transport format combination set RACH TFCS, PRACH are cut apart PRACH partitioning, continue zoom factor Persistence scaling factors, are reached the mapping of AC-to-ASC mapping access class-access service class; Wherein, PRACH info and Transportchannel identity are essential, and Persistence scaling factors and AC-to-ASC mapping are optional, and other three parameters are to describe.
The method of using the present invention to introduce; UE can carry out uplink random and insert on assistant carrier frequency; For the UE of CELL_FACH that on assistant carrier frequency, works or CELL_PCH state, insert at random and work and just can use same carrier frequency, need not after inserting at random, switch to other carrier frequency again.
Description of drawings
Fig. 1 is the schematic flow sheet of random access procedure in the prior art;
Fig. 2 is the schematic flow sheet of application example one of the present invention.
Embodiment
To combine accompanying drawing and embodiment that technical scheme of the present invention is explained in more detail below.
The invention provides the method that inserts at random in a kind of multi-carrier TD-SCDMA system, comprising:
Radio network controller (RNC) is broadcasted the information of the Physical Random Access Channel PRACH on the main carrier frequency in the system message of UU mouth (air interface);
The PRACH of UE on main carrier frequency initiates to insert;
After the access, RNC sends the dedicated signaling message of corresponding UU mouth and gives UE; If RNC is configured in UE on the assistant carrier frequency, then in the dedicated signaling message of UU mouth, carry the parameter information of the PRACH that on assistant carrier frequency, disposes for this UE; If RNC is configured in UE on the main carrier frequency, then in the dedicated signaling message of UU mouth, do not carry the parameter information of PRACH;
After UE receives dedicated signaling message,, then, this inserts at random on being disposed at the PRACH of assistant carrier frequency if wherein carried the parameter information of the PRACH that on assistant carrier frequency, disposes; If wherein do not carry the parameter information of PRACH, then the PRACH at main carrier frequency inserts at random.
Wherein, the parameter of the PRACH on the assistant carrier frequency can be identical with the parameter of PRACH on the main carrier frequency, also can be independently of one another, and different each other.
Wherein, if carry the parameter information of PRACH in the dedicated signaling message that UE receives, then this UE must insert on this assistant carrier frequency at random, and can not on main carrier frequency, insert at random.
Wherein, the dedicated signaling message of said UU mouth can comprise: RRC CONNECTION SETUP (the Radio Resource control connection is set up message), RADIO BEARER SETUP (radio bearer is set up message), RADIO BEARER RECONFIGURATION (radio bearer reconfiguration message), TRANSPORT CHANNEL RECONFIGURATION (transmission channel reconfiguration message), PHYSICAL CHANNEL RECONFIGURATION (physical channel reconfiguration message), CELLUPDATE CONFIRM message such as (cell update acknowledgement messages).
RNC sends the dedicated signaling message of corresponding UU mouth and can be meant for UE: the corresponding UU mouth of employed message dedicated signaling message when RNC sends with UE initiation access; Such as sending wireless resource control connection request as UE when initiating to insert, what RNC sent sets up message for the Radio Resource control connection.
Wherein, if RNC is configured in UE on the assistant carrier frequency, the parameter information that then in the dedicated signaling message of UU mouth, carries the PRACH that on assistant carrier frequency, disposes for this UE can be meant:
RNC is in RRC dedicated signaling message such as the RRC of UU mouth CONNECTION SETUP, RADIO BEARER SETUP, RADIO BEARER RECONFIGURATION, TRANSPORT CHANNELRECONFIGURATION, PHYSICAL CHANNEL RECONFIGURATION, CELLUPDATE CONFIRM; Increase " Random Access ControlExtension " (access control expansion at random) cell; The Need attribute is made as " OP " (option), and is as shown in table 1; If UE is disposed at assistant carrier frequency; Then in issuing the dedicated signaling message of UE, carry " Random Access Control Extension " cell; The parameter of the PRACH that disposes on this assistant carrier frequency is informed UE; If UE is disposed at main carrier frequency, then do not carry " Random Access ControlExtension " cell.
Table 1, increased the RRC dedicated signaling message of the information of Physical Random Access Channel on the assistant carrier frequency
| Information Element/Group name (information unit/group name is claimed) | Need (whether needing) | Multi (interval) | Type and reference (type and reference) | Semantics description (semantic description) | Version (version) |
| ......Omitted...... |
| PhyCH?information elements | |||||
| Frequency?info | OP | ||||
| Multi-frequency?Info | OP | ||||
| ......Omitted...... | |||||
| Uplink?radio?resources | |||||
| ......Omitted...... | |||||
| Random?Access?Control Extension | OP | ||||
| .......Omitted...... |
Wherein, comprise the parameter that is configured in the Physical Random Access Channel on the assistant carrier frequency in " Random Access Control Extension " cell, UE is being disposed at initiation access at random on the PRACH of assistant carrier frequency according to the parameter in this cell; The content of this cell is as shown in table 2.
The content of table 2, " Random Access Control Extension " cell
| Information?Element/Group?name | Need | Multi | Type?and reference | Semantics description | Versio n |
| CHOICE PRACH Info Type (selection of PRACH information type) | |||||
| ＞PRACH Information (PRACH information) | OP | ||||
| ＞＞PRACH info (PRACH information) | MP | ||||
| ＞＞Transport channel identty (transmission channel sign) | MP | ||||
| ＞＞RACH TFS (RACH TFS Transport Format Set) | MD | ||||
| ＞＞RACH TFCS (RACH transport format combination set) | MD | ||||
| ＞＞PRACH partitioning (PRACH is cut apart) | MD | ||||
| ＞＞Persistence scaling factors (continuing zoom factor) | OP | ||||
| ＞＞AC-to-ASC mapping (inserting the mapping of class-access service class) | OP | ||||
| ＞same as PRACH in SIB5 (identical) with the PRACH in the System information block 5 | OP |
Wherein, Said dedicated signaling message is radio resource control RRC dedicated signaling message, and the frequency of the assistant carrier frequency at PRACH place can be indicated by FPACH Frequency Info (physical access channel carrier information) cell among the Multi-frequency Info in the radio resource control RRC dedicated signaling message (multicarrier information).
Wherein, comprise " CHOICEPRACH Info Type " cell in said " Random Access Control Extension " cell, comprise two options in this cell: PRACH Information cell and same as PRACH in SIB5 cell;
If RNC will be different from the new parameter of the PRACH parameter on the main carrier frequency for one cover of the PRACH channel configuration on the assistant carrier frequency, then select PRACH Information (PRACH information) cell among the CHOICE PRACH Info Type (selection of Physical Random Access Channel information type).
If it is identical with the PRACH channel parameter of main carrier frequency among the SIB5 that RNC will be configured to the PRACH channel parameter on the assistant carrier frequency, then select same asPRACH in SIB5 (identical) cell among the CHOICE PRACH Info Type with the PRACH in the System information block 5.
Also comprise in said " Random Access Control Extension " cell when RNC selects PRACH Information cell the parameter that will dispose; These parameters comprise: PRACH info (PRACH information), Transport channel identity (transmission channel sign), RACH TFS (RACH TFS Transport Format Set), RACH TFCS (RACH transport format combination set), PRACHpartitioning (PRACH is cut apart), Persistence scaling factors (continuing zoom factor), and AC-to-ASC mapping (inserting class-access service class shines upon); Wherein, PRACH info and Transport channelidentity are essential, and Persistence scaling factors and AC-to-ASCmapping are optional, and other three parameters are to describe.
Further explain with an application example of the present invention below.
This application example is in the multi-carrier TD-SCDMA system, and the method that UE inserts at random is as shown in Figure 2, comprising:
Step 1: RNC broadcasts the PRACH information on the main carrier frequency in system message;
Step 2: be in idle condition UE and initiate wireless resource control connection request from main carrier frequency;
Step 3: RNC sends the Radio Resource control connection and sets up message to UE; If UE is disposed at assistant carrier frequency; Then in this message, carry " Random Access Control Extension " cell; Tell UE with the information of the PRACH that disposes on this assistant carrier frequency; And the information of this PRACH can be configured to SIB5 in the main carrier frequency PRACH information broadcasted identical, also can be configured to difference; If UE is disposed at main carrier frequency, then do not carry " Random Access Control Extension " cell.
After step 4: UE receives that the Radio Resource control connection is set up message; Carry " Random Access Control Extension " cell if find in this message; Then according to the parameter in this cell,, this initiates to insert at random on being disposed at the PRACH of assistant carrier frequency; Otherwise on the PRACH of main carrier frequency, initiate to insert at random.
Certainly; The present invention also can have other various embodiments; Under the situation that does not deviate from spirit of the present invention and essence thereof; Those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of claim of the present invention.
Claims (10)
1. the method that inserts at random in the multi-carrier time-division synchronous code division multiple access code system comprises:
Radio network controller (RNC) is broadcasted the information of the Physical Random Access Channel PRACH on the main carrier frequency in the system message of UU mouth;
The PRACH of user equipment (UE) on main carrier frequency initiates to insert;
After the access, RNC sends the dedicated signaling message of corresponding UU mouth and gives UE; If RNC is configured in UE on the assistant carrier frequency, then in the dedicated signaling message of UU mouth, carry the parameter information of the PRACH that on assistant carrier frequency, disposes for this UE;
After UE receives dedicated signaling message,, then, this inserts at random on being disposed at the PRACH of assistant carrier frequency if wherein carried the parameter information of the PRACH that on assistant carrier frequency, disposes.
2. the method for claim 1 is characterized in that:
The parameter of PRACH on the said assistant carrier frequency and the parameter of the PRACH on the main carrier frequency are identical or different.
3. the method for claim 1 is characterized in that, also comprises:
If RNC is configured in UE on the main carrier frequency, then in the dedicated signaling message of UU mouth, do not carry the parameter information of PRACH;
If do not carry the parameter information of PRACH in the dedicated signaling message that UE receives, then UE inserts at the PRACH of main carrier frequency at random.
4. like each described method in the claim 1 to 3, it is characterized in that the dedicated signaling message of said UU mouth comprises:
The Radio Resource control connection is set up message RRC CONNECTION SETUP, radio bearer is set up message RADIO BEARER SETUP, radio bearer reconfiguration message RADIO BEARER RECONFIGURATION, transmission channel reconfiguration message TRANSPORT CHANNEL RECONFIGURATION, physical channel reconfiguration message PHYSICAL CHANNEL RECONFIGURATION, cell update acknowledgement message CELL UPDATE CONFIRM.
5. method as claimed in claim 4 is characterized in that:
Said dedicated signaling message is radio resource control RRC dedicated signaling message, and the frequency of the assistant carrier frequency at PRACH place is indicated by the physical access channel carrier information FPACH Frequency Info cell among the multicarrier information Multi-frequency Info in the RRC dedicated signaling message.
6. method as claimed in claim 4 is characterized in that:
The dedicated signaling message that RNC sends corresponding UU mouth is meant to UE: the corresponding UU mouth of employed message dedicated signaling message when RNC sends with UE initiation access.
7. method as claimed in claim 4 is characterized in that, if RNC is configured in UE on the assistant carrier frequency, the parameter information that then in the dedicated signaling message of UU mouth, carries the PRACH that on assistant carrier frequency, disposes for this UE is meant:
RNC is in the RRC of UU mouth CONNECTION SETUP, RADIO BEARER SETUP, RADIO BEARER RECONFIGURATION, TRANSPORT CHANNEL RECONFIGURATION, PHYSICAL CHANNEL RECONFIGURATION, these dedicated signaling message of CELL UPDATE CONFIRM; Increase the optional expansion of access control at random cell " Random Access Control Extension ", comprise the parameter that is configured in the Physical Random Access Channel on the assistant carrier frequency in this cell;
If UE is disposed at assistant carrier frequency, then in issuing the dedicated signaling message of UE, carry " Random Access Control Extension " cell, the parameter information of the PRACH that disposes on this assistant carrier frequency is informed UE.
8. method as claimed in claim 7 is characterized in that:
If UE is disposed at main carrier frequency, then in issuing the dedicated signaling message of UE, do not carry " Random Access Control Extension " cell.
9. method as claimed in claim 7 is characterized in that:
Comprise in said " Random Access Control Extension " cell that the PRACH information type selects CHOICE PRACH Info Type cell, comprise two options in the said CHOICE PRACH Info Type cell: PRACH information PRACH Information cell with System information block 5 in the identical same as of PRACH PRACH in SIB5 cell;
If RNC will be the PRACH parameter channel configuration on the assistant carrier frequency, then select PRACH Information cell; If it is identical with the PRACH channel parameter of main carrier frequency among the System information block 5SIB5 that RNC will be arranged to the PRACH channel parameter on the assistant carrier frequency, then select same as PRACH in SIB5 cell.
10. method as claimed in claim 9 is characterized in that:
Also comprise in said " Random Access Control Extension " cell when RNC selects PRACH Information cell the parameter that will dispose; These parameters comprise:
PRACH information PRACH info, transmission channel sign Transport channel identity, RACH TFS Transport Format Set RACH TFS, RACH transport format combination set RACH TFCS, PRACH are cut apart PRACH partitioning, continue zoom factor Persistence scaling factors, are reached the mapping of AC-to-ASC mapping access class-access service class; Wherein, PRACH info and Transport channel identity are essential, and Persistence scaling factors and AC-to-ASC mapping are optional, and other three parameters are to describe.
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| CN102761974A (en) * | 2011-04-27 | 2012-10-31 | 中兴通讯股份有限公司 | Access control method, system and UE (user equipment) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1497882A (en) * | 2002-10-23 | 2004-05-19 | 华为技术有限公司 | Random insertion method fortime-division duplex system |
| CN1719932A (en) * | 2004-07-09 | 2006-01-11 | 中兴通讯股份有限公司 | Random access method of multi-carrier covering of TD-SCDMA system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1497882A (en) * | 2002-10-23 | 2004-05-19 | 华为技术有限公司 | Random insertion method fortime-division duplex system |
| CN1719932A (en) * | 2004-07-09 | 2006-01-11 | 中兴通讯股份有限公司 | Random access method of multi-carrier covering of TD-SCDMA system |
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