CN101043718A - Method for performing paging using downlink sharing physical channel - Google Patents
Method for performing paging using downlink sharing physical channel Download PDFInfo
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- CN101043718A CN101043718A CNA2006100661796A CN200610066179A CN101043718A CN 101043718 A CN101043718 A CN 101043718A CN A2006100661796 A CNA2006100661796 A CN A2006100661796A CN 200610066179 A CN200610066179 A CN 200610066179A CN 101043718 A CN101043718 A CN 101043718A
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Abstract
The disclosed calling method using down share physical channel comprises: setting mark domain in the frame structure of down share control channel to label this channel as the calling indication channel or other control indication channel; when labeling this as the calling indication channel, the frame structure also contains the calling indication domain; UE monitors the lab el to decide whether the down share control channel as the calling indication channel; if yes, UE decides the relative calling indication effective, and user terminal receives the calling message from the calling channel mapped on the down share physical channel according to down share physical channel configuration message. This invention combines the calling indication channel into the down share control channel to simplify system, and increases the utility of wireless resource.
Description
Technical field
The present invention relates to wireless communication technology field, be specifically related to a kind of method of carrying out paging with Physical Downlink Shared Channel.
Technical background
In 3GPP Universal Terrestrial Radio Access Network (3GPP UTRAN) communication standard, the Web broadcast beep-page message is Page Indication Channel (PICH:Paging Indicator Channel) broadcasting and passes through paging channel (PCH:Paging Channel) transmission, Page Indication Channel (PICH) data of not carrying transmission channel wherein, and use with the PCH pairing, whether need to understand the PCH channel of following thereafter in order to indicate specific UE.PCH and PICH can be mapped on the S-CCPCH Secondary Common Control Physical Channel (S-CCPCH:Secondry Common Control Physical Channel) simultaneously, and basic Common Control Physical Channel (P-CCPCH:Primary Common Control Physical Channel) and S-CCPCH also can be mapped on the physical slot by time simultaneously, and timesharing takies the Radio Resource on the time slot.In physical channel, S-CCPCH is used to carry the data from transmission channel FACH and PCH.
In the Web broadcast paging, the working method of PCH is, the PCH transmission channel is mapped on the S-CCPCH Secondary Common Control Physical Channel S-CCPCH, the working method that receives with PICH physical channel indication UE, promptly when certain user terminal of ICQ (UE), relevant information is placed on the PCH, launches from the S-CCPCH physical channel, simultaneously, on the PICH ad-hoc location, indicate the paging information of certain group UE.The information such as cycle of the time slot of S-CCPCH and PICH, code channel configuration, discontinuous transmission (DTX) are notified to UE by system broadcasts.PICH and PCH work with the DTX working method of cycle emission.UE reads sign on the PICH ad-hoc location in the mode that be interrupted to receive (DRX), if the paging indication information that UE is relevant is designated as no paging information therewith, does not then do further work.If the relevant paging information indication of UE is therewith arranged, i.e. paging indication effectively, the PCH information on the S-CCPCH physical channel of then reading is decoded, interpretation and work subsequently.For example in the TD-SCDMA system, can there be many Page Indication Channels and paging channel, but terminal only need be understood wherein one's own Page Indication Channel, make the network more terminal of paging simultaneously of TD-SCDMA system, and don't increase the time that single terminal is understood common signal channel.
In the process of 3GPP Long Term Evolution (LTE:Long Term Evolution) plan, current paging channel has been defined as a transmission channel, and its characteristic is: support that DRX is beneficial to the UE power saving; Full sub-district covers; Be mapped to physical resource dynamic, that can be used for business and control channel.
Current down physical channel has shared control channel to be used for the scheduling of Physical Downlink Shared Channel.How to realize UE is carried out the sign of paging receiving channel in physical layer, whether determine as yet with PICH.
Because the resource distribution of S-CCPCH is static substantially, resource allocation informations such as its gap, code channel are notified to UE by system broadcasts.PCH periodically is mapped on the S-CCPCH physical channel, and when not having the information of paging UE, or the information of paging UE is seldom the time, and the resource distribution of S-CCPCH is still constant, therefore makes utilization ratio of wireless resources lower, and resource distribution is dumb.A bearing call indication information among the PICH before 3GPP Long Term Evolution (LTE) plan is formulated, PCH is mapped to the information of physical channel and notifies UE by system broadcasts, transmission channel is that the method for indicating with descending shared control physical channel is inconsistent to the mapping of sharing physical channel among this and the LTE, cause the complexity that concerns of interchannel, be unfavorable for channel management.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of method of carrying out paging with Physical Downlink Shared Channel, has solved above-mentioned subproblem of the prior art and deficiency.
A kind of method of carrying out paging with Physical Downlink Shared Channel provided by the invention comprises:
A., the sign bit field is set in the frame structure of descending shared control signal channel, and being used to identify this channel is that Page Indication Channel still is other control indicating channel, when this channel of sign is Page Indication Channel, also comprises paging indication territory in the frame structure;
B. subscriber equipment judges by the sign of the described sign bit field of monitoring whether descending shared control signal channel is Page Indication Channel;
C. after determining to be Page Indication Channel, subscriber equipment judges that according to affiliated paging group corresponding paging indicates whether effectively, as the paging indication effectively, then user terminal is according to configuration information paging receiving message from the paging channel that Physical Downlink Shared Channel shines upon of Physical Downlink Shared Channel.
When this channel of sign is Page Indication Channel, also comprise the configuration information territory of Physical Downlink Shared Channel in the frame structure, be used to indicate the configuration information of Physical Downlink Shared Channel.
The configuration information of wherein said Physical Downlink Shared Channel comprises frequency information, the temporal information of Physical Downlink Shared Channel, and can determine the resource location of Physical Downlink Shared Channel in radio frames by described frequency information, temporal information.
The configuration information of described Physical Downlink Shared Channel sends to subscriber equipment from broadcast channel.
The sign of monitoring described sign bit field comprises:
When subscriber equipment is in idle condition, read the information of descending shared control signal channel periodically according to broadcast message, to obtain the sign of sign bit field;
When subscriber equipment is in state of activation, when reading the information of descending shared control signal channel, judge it is Paging Control Channel according to " paging channel sign ", if then enter the paging processing procedure; Otherwise general control Channel Processing.
This method comprises: (PCH) is mapped to Physical Downlink Shared Channel with paging channel, to send on the resource location of descending shared control signal channel configuration information indication.
Another kind according to the present invention comprises with the method that Physical Downlink Shared Channel carries out paging:
A. replace UE_ID in the generic downlink shared control channel frame structure with the sign Page Indication Channel with specific ID, when this channel of sign is Page Indication Channel, also comprise paging indication territory in the frame structure;
B. user equipment monitors judges then that to specific ID descending shared control signal channel is a Page Indication Channel;
C. after determining to be Page Indication Channel, subscriber equipment judges that according to affiliated paging group corresponding paging indicates whether effectively, as the paging indication effectively, then user terminal is according to configuration information paging receiving message from the paging channel that Physical Downlink Shared Channel shines upon of Physical Downlink Shared Channel.
When this channel of sign is Page Indication Channel, also comprise the configuration information territory of Physical Downlink Shared Channel in the frame structure, be used to indicate the configuration information of Physical Downlink Shared Channel.
Wherein said specific ID has identical length with UE_ID in the generic downlink shared control channel.
The configuration information of described Physical Downlink Shared Channel sends to subscriber equipment from broadcast channel.
This method comprises: (PCH) is mapped to Physical Downlink Shared Channel with paging channel, to send on the resource location of descending shared control signal channel configuration information indication.
Utilize the present invention, PCH is mapped to Physical Downlink Shared Channel, carry out paging indication and the shared physical channel resources schedule information of bearing downlink with descending shared control signal channel, indication UE carries out PCH and receives, and the resource distribution and the DTX cycle of paging indication control channel are notified UE by system broadcasts.When no paging information, do not take any downlink radio resource about the work of paging, improved utilization ratio of wireless resources.Directly PICH is merged to the simplification that descending shared control signal channel also helps system.
Description of drawings
Fig. 1 is in the current communication system, and the paging working channel constitutes schematic diagram;
Fig. 2 is that the paging working channel of the embodiment of the invention constitutes schematic diagram;
Fig. 3 is according to paging method flow chart of the present invention;
Fig. 4 a, Fig. 4 b and Fig. 4 c are the flow chart according to the embodiment of the invention.
Embodiment
The present invention utilizes Physical Downlink Shared Channel to carry out paging, by the sign bit field is set in the frame structure of descending shared control signal channel, to identify this channel is that Page Indication Channel still is other control indicating channel, or replace UE_ID in the generic downlink shared control channel frame structure with the sign Page Indication Channel with specific ID, subscriber equipment judges by the sign or the specific ID of the described sign bit field of monitoring whether descending shared control signal channel is Page Indication Channel; After determining to be Page Indication Channel, subscriber equipment according to the configuration information of Physical Downlink Shared Channel in the descending shared control signal channel from corresponding paging channel paging receiving information, thereby enter the paging processing procedure.
In 3G LTE radio communication, down physical channel comprises Common Control Channel (CCPCH), Physical Downlink Shared Channel, descending shared control signal channel.
When need carry out paging, descending shared control signal channel bearing call indication information, correspondingly this moment this channel be called Page Indication Channel, the subcarrier of its mapping, time slot and DTX cycle by broadcast channel (BCH) to users broadcasting.By broadcast channel the information of Page Indication Channel mapping is broadcasted to subscriber equipment.
By comprise frequency, the time slot configuration information of paging indication information, Physical Downlink Shared Channel during as Page Indication Channel at descending shared control signal channel, but can not comprise static configuration informations such as coded system as PCH, modulation system, these static configuration informations are by regulation and stipulation, or by system broadcasts notice UE.
When with paging channel sign difference paging indication control channel and generic downlink shared control channel, be as the descending shared control signal channel frame structure of descending paging channel:
| The paging channel sign | Paging indication information | The configuration information of Physical Downlink Shared Channel | …… |
This moment generic downlink shared control channel frame structure:
| The paging channel sign | ?UE_ID | The configuration information of Physical Downlink Shared Channel | …… |
When with a specific paging ID when distinguishing the sign of paging indication control channel and generic downlink shared control channel, as the descending shared control signal channel frame structure of descending paging channel be:
| Paging ID | Paging indication information | The configuration information of Physical Downlink Shared Channel | …… |
This paging is used for replacing the UE_ID of generic downlink shared control channel for ID number, and it has identical length with UE_ID in the generic downlink shared control channel, and the UE_ID that paging ID is identical does not distribute to the terminal of state of activation therewith, only is used for paging.
It is as follows to comprise data field in the frame structure of generic downlink shared control channel at this moment:
| ?UE_ID | The configuration information of Physical Downlink Shared Channel | …… |
Page Indication Channel also can comprise the temporal information of the Physical Downlink Shared Channel that carries PCH, and the System Frame Number that promptly carries the Physical Downlink Shared Channel place frame of PCH and PICH place frame is poor.
PCH is mapped to Physical Downlink Shared Channel with paging channel, to send on the resource location of descending shared control signal channel configuration information indication.Comprise relevant informations such as UE_ID, paging reason in the PCH information.
Need to send when wireless access network (RAN:Radio Access Network) has paging information, form the Frame of descending shared control signal channel and go up transmission in the position in paging DTX cycle (frame, time slot, frequency).Fig. 3 is according to paging method flow chart of the present invention, with reference to Fig. 3.
At first, the particular data territory is provided with sign in the frame structure in descending shared control signal channel, and being used to identify this channel is Page Indication Channel; (S01) for example " particular data territory "=0 expression is common shared control channel; " particular data territory "=1 expression is a paging indication control channel.
Another implementation method is with the sign of some specific ID as differentiation paging and generic downlink shared control channel, and with the sign Page Indication Channel, this specific ID only is used for paging with the UE_ID in the specific ID replacement generic downlink shared control channel frame structure.
Subscriber equipment judges by the sign of the described sign bit field of monitoring whether descending shared control signal channel is Page Indication Channel; (S02), judge that then this channel is a Page Indication Channel as detecting " particular data territory "=1.
After determining to be Page Indication Channel, subscriber equipment according to the configuration information of descending shared control signal channel from corresponding paging channel paging receiving information.(S03) at this, configuration information comprises frequency information, temporal information (as timeslot number) and other variable information of Physical Downlink Shared Channel.Subscriber equipment can correctly read the data of Physical Downlink Shared Channel according to the resource location of this configuration information indication, and in conjunction with the static information that obtains from broadcasting, can correctly solve the PCH data of Physical Downlink Shared Channel carrying.
The information mapping of PCH to Physical Downlink Shared Channel, is sent on the resource location of descending shared control signal channel indication.If no paging information does not then send paging indication information, and is used for the generic downlink shared control channel.
As shown in Figure 2, be that 5 position does not have paging at frame number, then Radio Resource is used for the transfer of data of UE1, is that 10 position has paging at frame number, then is used for paging.
Subscriber equipment reads the information of descending shared control signal channel according to broadcast message, and judges whether to be Page Indication Channel, if Page Indication Channel then enters the paging processing procedure; Otherwise do processing out of the ordinary, promptly the UE under the idle condition (Idle) does not handle, and the UE of state of activation (Active) does normal process;
When subscriber equipment (UE) when being in idle condition, according to broadcast message, read the information of descending shared control signal channel periodically, at first read " sign in the particular data territory " or identification specific ID, judge whether this descending shared control signal channel is paging indication control channel;
If not Page Indication Channel does not then process, reenter free time (Idle) state;
If judge it is Page Indication Channel, then detect the paging sign, if the paging that UE reads indication does not have the paging information relevant with this UE, UE does not carry out any processing, reenters free time (Idle) state; If relevant paging information is arranged, then solve the information of PCH in the Physical Downlink Shared Channel according to the resource location information of the PCH mapping that is comprised in the descending shared control signal channel, read UE_ID wherein.If the paging information of oneself reads reason and other information of paging, carry out random access procedure according to the reason of paging, RRC sets up process, communication process, or receives note process etc.If UE_ID and the ID of oneself do not match, then reenter free time (Idle) state.
When being in UE under activation (Active) state and reading descending shared control signal channel, judge at first whether this channel is paging indication control channel.If then enter the paging processing procedure, if not then judge scheduling process normally.
Determine that UE receives the opportunity of Physical Downlink Shared Channel, can adopt following dual mode to carry out the time configuration:
1), in standard, provides the time interval of Physical Downlink Shared Channel and the paging indication control channel of carrying PCH, such as the System Frame Number as if paging indication control channel place frame is N, the System Frame Number of the Physical Downlink Shared Channel place frame of regulation carrying PCH is N+1, when if UE need continue to read PCH information, then the next frame to paging indication control channel place frame reads PCH information.
2), the time interval of the Physical Downlink Shared Channel of carrying PCH and paging indication control channel is by the time location information indication (m) of the PCH that comprises in the paging indication control channel, when UE need continue to read PCH information, then the frame of indicating control channel place frame number to add m to paging read PCH information.
In order to be illustrated more clearly in the present invention, further describe below in conjunction with specific embodiment.
With reference to Fig. 2, there is a descending shared control signal channel will be used for bearing call indication control information on the 1-5 subcarrier in time slot 0 (TS0), the DRX cycle of paging is 5, paging information is even arranged, its paging indication control information will occur on frame number is the frame of 5 integral multiple, the frequency of this descending shared control signal channel, gap information, and DRX cycle information will be informed user terminal on broadcast channel.
Frame in frame number=5 did not have paging information in the past, when then debug the base station, did not have bearing call information on Physical Downlink Shared Channel, and carrying is user data; The paging channel of descending shared control signal channel sign=0 (or UE_ID wherein is the ID of user terminal (UE) under the state of activation that is scheduled, as be UE1 among Fig. 2).Listen to all idle conditions of this control channel and the data that the user terminal under the state of activation all can read this channel this moment.UE under the idle condition reads paging channel sign=0 (or UE_ID is not special paging ID) and does not then process; UE under the state of activation reads UE_ID, and have only UE1 can continue to read other configuration information this moment, and receives data according to these configuration informations in the shared physical channel of corresponding downstream, and the UE under other state of activation does not then do further processing.
When frame number=5-9, high-rise paging information is received in the base station, then will be in the Physical Downlink Shared Channel in the frame of frame number 〉=10 data of Resources allocation carrying PCH, and the paging channel in the descending shared control signal channel in frame number=10 sign is changed to 1 (or UE_ID fill out be special paging ID), and fill in paging indication information, and the configuration information of Physical Downlink Shared Channel.
In frame number=10 o'clock, listen to all idle conditions of this control channel and the data that the user terminal under the state of activation all can read this channel.UE under the state of activation reads paging channel sign (=1) (or UE_ID=paging ID), and will judge is paging indication control channel, then carries out the paging processing procedure or does not handle.UE under the idle condition reads paging channel sign (=1) (or UE_ID=paging ID), and will judge is paging indication control channel, then carries out the paging processing procedure.
The paging processing procedure is that UE reads indication territory relevant with this UE in the descending shared control signal channel, judges whether relevant paging with this UE: if not further processing is not then done in the paging of this UE; If the paging relevant with this UE arranged, then read the PCH data of carrying in the Physical Downlink Shared Channel according to the configuration information of Physical Downlink Shared Channel, read UE_ID and the ID of self comparison among the PCH, then do not do further processing as if different; If the same then continue to read out of Memory information such as () paging reasons, and carry out random access procedure according to these information, RRC sets up process, communication process, or receives note process etc.
When indicating as paging with paging ID sign descending shared control signal channel, the processing procedure of idle condition UE (processing procedure of state of activation UE is identical with the normal process process) is referring to Fig. 4 a.
When distinguishing descending shared control signal channel as the paging indication with the paging channel sign, the processing procedure of idle condition UE is referring to Fig. 4 b.When distinguishing descending shared control signal channel as the paging indication with the paging channel sign, the processing procedure of state of activation UE is referring to Fig. 4 c.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within the claim scope of the present invention.
Claims (11)
1, a kind of method of carrying out paging with Physical Downlink Shared Channel is characterized in that, comprising:
A., the sign bit field is set in the frame structure of descending shared control signal channel, and being used to identify this channel is that Page Indication Channel still is other control indicating channel, when this channel of sign is Page Indication Channel, also comprises paging indication territory in the frame structure;
B. subscriber equipment judges by the sign of the described sign bit field of monitoring whether descending shared control signal channel is Page Indication Channel;
C. after determining to be Page Indication Channel, subscriber equipment judges that according to affiliated paging group corresponding paging indicates whether effectively, as the paging indication effectively, then user terminal is according to configuration information paging receiving message from the paging channel that Physical Downlink Shared Channel shines upon of Physical Downlink Shared Channel.
2, paging method as claimed in claim 1 is characterized in that, when this channel of sign is Page Indication Channel, also comprises the configuration information territory of Physical Downlink Shared Channel in the frame structure, is used to indicate the configuration information of Physical Downlink Shared Channel.
3, paging method as claimed in claim 1, it is characterized in that, the configuration information of wherein said Physical Downlink Shared Channel comprises frequency information, the temporal information of Physical Downlink Shared Channel, and can determine the resource location of Physical Downlink Shared Channel in radio frames by described frequency information, temporal information.
4, paging method as claimed in claim 1 is characterized in that, the configuration information of described Physical Downlink Shared Channel sends to subscriber equipment from broadcast channel.
5, paging method as claimed in claim 1 is characterized in that, the sign of monitoring described sign bit field comprises:
When subscriber equipment is in idle condition, read the information of descending shared control signal channel periodically according to broadcast message, to obtain the sign of sign bit field;
When subscriber equipment is in state of activation, when reading the information of descending shared control signal channel, judge it is Paging Control Channel according to " paging channel sign ", if then enter the paging processing procedure; Otherwise general control Channel Processing.
6, paging method as claimed in claim 1 is characterized in that, comprising: (PCH) is mapped to Physical Downlink Shared Channel with paging channel, to send on the resource location of descending shared control signal channel configuration information indication.
7, a kind of method of carrying out paging with Physical Downlink Shared Channel is characterized in that, comprising:
A. replace UE_ID in the generic downlink shared control channel frame structure with the sign Page Indication Channel with specific ID, when this channel of sign is Page Indication Channel, also comprise paging indication territory in the frame structure;
B. user equipment monitors judges then that to specific ID descending shared control signal channel is a Page Indication Channel;
C. after determining to be Page Indication Channel, subscriber equipment judges that according to affiliated paging group corresponding paging indicates whether effectively, as the paging indication effectively, then user terminal is according to configuration information paging receiving message from the paging channel that Physical Downlink Shared Channel shines upon of Physical Downlink Shared Channel.
8, paging method as claimed in claim 7 is characterized in that, when this channel of sign is Page Indication Channel, also comprises the configuration information territory of Physical Downlink Shared Channel in the frame structure, is used to indicate the configuration information of Physical Downlink Shared Channel.
9, paging method as claimed in claim 7 is characterized in that, wherein said specific ID has identical length with UE_ID in the generic downlink shared control channel.
10, paging method as claimed in claim 7 is characterized in that, the configuration information of described Physical Downlink Shared Channel sends to subscriber equipment from broadcast channel.
11, paging method as claimed in claim 7 is characterized in that, comprising: (PCH) is mapped to Physical Downlink Shared Channel with paging channel, to send on the resource location of descending shared control signal channel configuration information indication.
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