CN101286789A - Method for distributing exercise code of physical channel suitable for dynamic schedule - Google Patents
Method for distributing exercise code of physical channel suitable for dynamic schedule Download PDFInfo
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- CN101286789A CN101286789A CNA2007100911546A CN200710091154A CN101286789A CN 101286789 A CN101286789 A CN 101286789A CN A2007100911546 A CNA2007100911546 A CN A2007100911546A CN 200710091154 A CN200710091154 A CN 200710091154A CN 101286789 A CN101286789 A CN 101286789A
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Abstract
The invention provides a training code allocation method for physical channels, which is applicable to dynamic scheduling and comprises the following steps: (1) a radio network controller (RNC) configures the shared resource pool of business physical channels for the Node B of a base station, wherein, the shared resource pool is used for the dynamic scheduling, and a training code allocation mode in the training code allocation information of the business physical channels is configured to be a default training code allocation mode; (2) the RNC configures a dynamic scheduling resource for user equipment (UE) in a network side and does not configure the training code allocation information of the business physical channels; (3) the RNC allocates the dynamic scheduling resource for the UE in a UE side and configures the training code allocation mode of the business physical channels to be the default training code allocation mode. The invention ensures that the training codes allocated at the Node B side are in accord with the training codes allocated at the UE side, meanwhile, a training code using method in the default training code allocation mode is optimized.
Description
Technical field
The present invention relates to the synchronous radio communication system, especially relate to the method for distributing exercise code of the physical channel of dynamic dispatching in a kind of wireless telecommunication system.
Background technology
In mobile communication application, multipath distortion may appear, therefore needs to send some training sequences or the known data of some content, so that receiver carries out channel estimating.Estimate that the required information of transmission channel characteristic is included in the impulse response of channel, this is well-known in this technical field.Training sequence can be called as midamble code, Midamble sign indicating number or intermediate code.All need midamble code in up link from portable terminal to the base station and down link from the base station to portable terminal, so as to estimate to go to situation from each transmission path of each user.Shown in Figure 1 is general burst (Burst) structure of TD-SCDMA (TD SDMA) system, wherein just comprises midamble code.
In the TD-SCDMA system, the midamble code that different user adopted in the same sub-district in the same time slot by a basic midamble code after cyclic shift and produce.Each propaedeutics code length is 128chip (chip), and the actual midamble code length of using is 144chip.
2 system forms to each specific propaedeutics sign indicating number are write as sequence m
p:
m
p＝(m
1，m
1，...，m
P)
P=128 wherein; For from m
pIn to obtain available length be 144 training sequence, with m
pLength periodically expand to:
i
max＝L
m+(K-1)W
Wherein:
L
m: the length of training sequence is fixed as 144;
K: value can be: 2,4,6,8,10,12,14,16, and occurrence is by system information broadcast.
W: be defined as P/K, P=128.
Obtain a new sequence like this:
Wherein preceding P element and vector m
pIdentical, preceding n element during the element of back then repeats, that is:
m
i＝m
i-P i＝(P+1)，...，i
max
For user k, its training sequence m
(k)Long is L
m, can obtain from sequence m, can be expressed as user's particular sequence:
K in the time slot (k=1 ..., K) element in individual user's the training sequence is determined by following formula:
In the TD-SCDMA system, when being subscriber equipment (UE) distribution physical channel resources, the relevant information that needs the configuration midamble code to distribute.Midamble code is the part of physical channel configuration, finishes configuration by high level, has three kinds of allocation plans:
1) the specific midamble code of UE is distributed: high level shows that for each UE ground Midamble sign indicating number of configuration is as DL (descending) or UL (up) physical channel.
2) the acquiescence midamble code is distributed: physical layer is the Midamble sign indicating number of a DL or an acquiescence of UL physical channel configuration according to the correlated channels sign indicating number.
3) public midamble code is distributed: physical layer disposes the Midamble sign indicating number according to the number of channelization codes that corresponding descending time slot has existed to DL.
If high level is not shown as certain physics channel allocation midamble code and high level does not use public midamble code allocative decision by the signaling indication yet, physical layer will adopt acquiescence midamble code allocative decision to finish the distribution of midamble code.When adopting acquiescence midamble code allocative decision, there is fixing contact between midamble code and the channel code (spreading code), and with each channel code that is applied to respectively in the related time-slot.Different sub-district and/or the time slots of maximum midamble code number (K value) configuration has different contacts.Concrete contact is referring to the AA.2 of 3GPP TS 25.221.When the configuration midamble code, all allocation models all need to dispose above-mentioned K value; For the specific midamble code allocation model of UE, except the assignment of allocation pattern is the specific midamble code of UE is distributed, also to need to dispose specific midamble code; Other two kinds of allocation models only need the assignment of allocation pattern.
In present TD-SCDMA system, at the physical channel of giving the UE static allocation, the RNC of network side (radio network controller) can be according to its corresponding midamble code of actual conditions static allocation, comprise midamble code allocation model and midamble code, and allocation result sent to Node B (base station) and this UE, thereby make Node B and UE when transmitting and receiving physical channel, the midamble code unanimity that it is corresponding.After the TD-SCDMA system introduces HSDPA (high-speed downlink packet access) and HSUPA (High Speed Uplink Packet access) technology, its corresponding service physical channel is a shared resource pond of being distributed by RNC, and distribute to UE's by Node B dynamic dispatching, therefore, the distribution method of its midamble code is also different with the physical channel of static allocation.In present 3GPP (third generation partner program) agreement, at network side, RNC is just in the configuration midamble code assignment information during to Node B configuration service physical channel shared resource pond by Iub interface; To UE, RNC can be by the Uu interface to each UE configuration midamble code assignment information.
RNC by Iub interface to Node B configuration service physical channel shared resource pond time configuration midamble code assignment information, because these resources are not to distribute to certain UE's, so, can't distribute midamble code by each UE, can only be configured to give tacit consent to the midamble code allocation model.And on Iub, RNC does not send the midamble code assignment information when distributing the HSDPA resource for certain UE, and Node B also can only distribute midamble code according to acquiescence midamble code allocation model.And on the Uu mouth, the midamble code of the professional physical channel of HSDPA is that each UE disposes respectively, can be without any unrestricted model.Therefore, the collocation method of above-mentioned Iub interface has limited the midamble code allocation model, and may cause the inconsistent of network side Node B and the distribution of UE midamble code owing to Uu mouth configuration alternate manner.Therefore, the physical channel that is necessary for this dynamic dispatching provides a kind of corresponding method for distributing exercise code.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of method for distributing exercise code of physical channel that is applicable to dynamic dispatching, and solving HSDPA, the midamble code in HSUPA technology and the follow-up similar techniques during dynamic dispatching physical channel is distributed may inconsistent problem.
In order to solve the problems of the technologies described above, the present invention proposes a kind of method for distributing exercise code of physical channel that is applicable to dynamic dispatching, comprise following steps:
(a) radio network controller (RNC) is configured to give tacit consent to the midamble code allocation model for base station node B disposes the professional physical channel shared resource pond that dynamic dispatching is used with the midamble code allocation model in the midamble code assignment information of professional physical channel;
(b) RNC is that user equipment (UE) distributes dynamic dispatching resource, not the midamble code assignment information of configuration service physical channel at network side;
(c) RNC is that UE distributes described dynamic dispatching resource in the UE side, and the midamble code allocation model of professional physical channel is configured to give tacit consent to the midamble code allocation model.
Further, said method also can have following characteristics: described method further comprises step (d): in dynamic dispatching resource allocation process, if a UE has been assigned with a plurality of professional physical channels, obtained a plurality of midamble code, Node B and described UE choose the midamble code of one of them midamble code as all professional physical channels.
Further, said method also can have following characteristics: Node B and described UE choose the midamble code of the midamble code of the minimum channel code correspondence of numbering as all professional physical channels.
Further, said method also can have following characteristics: the maximum midamble code number K value of configuration service physical channel in the described step (a), the identical maximum midamble code number K value of corresponding service physical channel configuration in the described step (c).
Further, said method also can have following characteristics: in the process of a dynamic dispatching resource allocation, if the distribution of the channel code of the professional physical channel of each time slot is identical with the configuration of K value, the professional physical channel on all time slots all uses identical midamble code so.
Further, said method also can have following characteristics: in the process of a dynamic dispatching resource allocation, if the distribution of the channel code of professional physical channel and/or the configuration of K value are inequality, the K value of same time slot is the same, the K value of different time-gap is identical or different, professional physical channel on the identical time slot all uses identical midamble code at this moment, and the professional physical channel on the different time-gap uses identical or different midamble code.
Further, said method also can have following characteristics: described method is applied to TD SDMA TD-SCDMA system or time division CDMA TD-CDMA system.
Further, said method also can have following characteristics: described professional physical channel is that high-speed downlink packet inserts the HS-PDSCH physical channel.
The invention provides a kind of method for distributing exercise code of physical channel that is applicable to dynamic dispatching.This method is clear and definite is used for the midamble code allocation flow and the distribution method of the physical channel of dynamic dispatching, has guaranteed that the midamble code of distributing in Node B and UE both sides is consistent, has optimized the midamble code using method under the acquiescence midamble code allocation model simultaneously.
Description of drawings
Fig. 1 is general burst (Burst) structure chart of TD-SCDMA system;
Fig. 2 is a method for distributing exercise code flow chart of the present invention.
Embodiment
Be that example describes the specific embodiment of the present invention in detail with the HSDPA technology in the TD-SCDMA system below, shown in Figure 2 is method for distributing exercise code flow chart of the present invention, specifically comprises the steps:
RNC initiates Physical Shared Channel and reshuffles the HS-PDSCH physical channel shared resource pond that (Physical Shared ChannelReconfiguration) process configuration dynamic dispatching is used, and sends physical channel reconfiguration request (PHYSICAL SHARED CHANNELRECONFIGURATION REQUEST) message to Node B.In this message, midamble code allocation model (MidambleAllocation Mode) in the Midamble Shift LCR information unit that will be relevant with the HS-PDSCH physical channel is configured to give tacit consent to midamble code (Default midamble), dispose MidambleConfguration LCR simultaneously, i.e. the K value.This midamble code assignment information is indicated the midamble code of all HS-PDSCH physical channels to distribute and is all used acquiescence midamble code allocation model and corresponding K value.
RNC initiates Radio Link foundation (Radio Link Setup) process, synchronised radio link reconfigure prepares (Synchronised Radio Link Reconfiguration Preparation) process or asynchronous wireless links (the Unsynchronised Radio Link Reconfiguration) process of reshuffling is that UE distributes the HSDPA resource at network side. but send to Node B " wireless link request (RADIO LINK SETUP REQUEST) " at RNC; " radio link reconfiguration prepare (RADIO LINKRECONFIGURATION PREPARE) " and " radio link reconfiguration request (RADIO LINKRECONFIGURATION REQUEST) " message and Node B send in RNC's " wireless link response (RADIO LINK SETUP RESPONSE) " " radio link reconfiguration success (RADIO LINK RECONFIGURATION READY) " " radio link reconfiguration response (RADIO LINK RECONFIGURATION RESPONSE) " message, are not included as the information that professional physical channel HS-PDSCH physical channel that dynamic dispatching uses disposes midamble code.
RNC initiates the Radio Resource control connection and sets up (RRC connection establishment) process, radio bearer is set up (radio bearer establishment) process, radio bearer is reshuffled (radio bearerreconfiguration) process, radio bearer discharges (the radio bearer release) process, transmission channel is reshuffled (transport channel reconfiguration) process, physical channel is reshuffled (physicalchannel reconfiguration) process, cell update (cell update) processes etc. are that UE distributes the HSDPA resource in the UE side, send corresponding " RRC CONNECTION SETUP " to UE, " RADIO BEARER SETUP ", " RADIO BEARER RECONFIGURATION ", " RADIO BEARER RELEASE ", " TRANSPORT CHANNELRECONFIGURATION ", " PHYSICAL CHANNEL RECONFIGURATION ", " cell update is confirmed (CELL UPDATE CONFIRM) " message.In these message, midamble code allocation model (Midamble Allocation Mode) in the HS-PDSCH Midamble Configuration information unit that will be relevant with the HS-PDSCH physical channel is configured to give tacit consent to midamble code (Defaultmidamble), dispose Midamble Configuration simultaneously, be the K value, the K value of corresponding HS-PDSCH physical channel is identical in this K value and the step (a).This midamble code assignment information indicates this UE when receiving the HS-PDSCH physical channel, uses acquiescence midamble code allocation model and corresponding K value.
In another embodiment of the present invention, after step 203, can further include step 204: at a UE, in dynamic dispatching HSDPA physical channel resources process, if obtain a plurality of midamble code by acquiescence midamble code allocation model, Node B and UE choose the midamble code of one of them midamble code as all physical channels.
At a UE, in HSDPA scheduling of resource assigning process, might one a plurality of HS-PDSCH physical channels (every the corresponding channel code of HS-PDSCH physical channel or spreading code) on the time slot, a plurality of HS-PDSCH physical channels on perhaps a plurality of time slots are assigned to a UE, this moment, different channel codes may correspondence obtain different midamble code according to acquiescence midamble code allocation model.In order to guarantee the channel estimating performance of every HS-PDSCH physical channel, thereby improve the business datum decoding performance of this dynamic dispatching process, Node B and UE can choose the midamble code of one of them midamble code as all HS-PDSCH physical channels.For example, can choose the midamble code of the minimum channel code correspondence of numbering.
Further, if the distribution of the channel code of the HS-PDSCH physical channel of each time slot is identical with the configuration of K value, the HS-PDSCH physical channel on all time slots all uses identical midamble code so; If the distribution of the channel code of HS-PDSCH physical channel and/or the configuration of K value can be inequality, the K value of a general time slot is the same, the K value of different time-gap may be identical, also may be different, HS-PDSCH physical channel on the identical time slot all uses identical midamble code at this moment, and the HS-PDSCH physical channel on the different time-gap can use different midamble code.
The invention is not restricted to the TD-SCDMA system, also applicable to TD-CDMA (time division CDMA) system or other TDD (time division duplex) system.
Claims (8)
1, a kind of method for distributing exercise code of physical channel that is applicable to dynamic dispatching comprises following steps:
(a) radio network controller (RNC) is configured to give tacit consent to the midamble code allocation model for base station node B disposes the professional physical channel shared resource pond that dynamic dispatching is used with the midamble code allocation model in the midamble code assignment information of professional physical channel;
(b) RNC is that user equipment (UE) distributes dynamic dispatching resource, not the midamble code assignment information of configuration service physical channel at network side;
(c) RNC is that UE distributes described dynamic dispatching resource in the UE side, and the midamble code allocation model of professional physical channel is configured to give tacit consent to the midamble code allocation model.
2, the method for claim 1, it is characterized in that: described method further comprises step (d): in dynamic dispatching resource allocation process, if a UE has been assigned with a plurality of professional physical channels, obtained a plurality of midamble code, Node B and described UE choose the midamble code of one of them midamble code as all professional physical channels.
3, method as claimed in claim 2 is characterized in that: Node B and described UE choose the midamble code of the midamble code of the minimum channel code correspondence of numbering as all professional physical channels.
4, the method for claim 1 is characterized in that: the maximum midamble code number K value of configuration service physical channel in the described step (a), the identical maximum midamble code number K value of corresponding service physical channel configuration in the described step (c).
5, method as claimed in claim 4, it is characterized in that: in the process of a dynamic dispatching resource allocation, if the distribution of the channel code of the professional physical channel of each time slot is identical with the configuration of K value, the professional physical channel on all time slots all uses identical midamble code so.
6, method as claimed in claim 4, it is characterized in that: in the process of a dynamic dispatching resource allocation, if the distribution of the channel code of professional physical channel and/or the configuration of K value are inequality, the K value of same time slot is the same, the K value of different time-gap is identical or different, professional physical channel on the identical time slot all uses identical midamble code at this moment, and the professional physical channel on the different time-gap uses identical or different midamble code.
7, the method for claim 1 is characterized in that: described method is applied to TD SDMA TD-SCDMA system or time division CDMA TD-CDMA system.
8, the method for claim 1 is characterized in that: described professional physical channel is that high-speed downlink packet inserts the HS-PDSCH physical channel.
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|---|---|---|---|
| CN200710091154A CN101286789B (en) | 2007-04-10 | 2007-04-10 | Method for distributing exercise code of physical channel suitable for dynamic schedule |
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| CN200710091154A CN101286789B (en) | 2007-04-10 | 2007-04-10 | Method for distributing exercise code of physical channel suitable for dynamic schedule |
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| CN1787394A (en) * | 2005-12-22 | 2006-06-14 | 凯明信息科技股份有限公司 | Method for detecting shifting sequence under public distributing mode in time division duplex system |
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