CN100473223C - Method for allocating channel code for high speed physcial down sharing channel - Google Patents
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- CN100473223C CN100473223C CNB2005101300305A CN200510130030A CN100473223C CN 100473223 C CN100473223 C CN 100473223C CN B2005101300305 A CNB2005101300305 A CN B2005101300305A CN 200510130030 A CN200510130030 A CN 200510130030A CN 100473223 C CN100473223 C CN 100473223C
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- 238000004891 communication Methods 0.000 abstract description 2
- 238000013468 resource allocation Methods 0.000 abstract 1
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- 238000010295 mobile communication Methods 0.000 description 2
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Abstract
The invention discloses a channelizing code configuration method for high speed physical down sharing channel, relating to 3G communication for UE HS-PDSCH channelizing code configuration continuity, its specific scheme is: (1) any time gap, configuring continuous channelizing code of high-speed physical down sharing channel for each community at network side;(2)after receiving resource allocation request of high-speed down packet access for mobile terminal, base station estimates processing capacity and service need of mobile terminal, and computing resource unit allocating to mobile terminal according to present dispensable resource information; judging whether computed dispensable resource unit is allocated to a time gap, if yes, base station allocates it to multi code channels of a time gap; if no, base station allocates it to multi code channels of multi time gaps. The invention is simple, and reduces complexity of HS-PDSCH channelizing code configured for system.
Description
Technical field
The present invention relates to the 3rd third-generation mobile communication field, relate in particular to the collocation method of the channel code of a kind of TD-SCDMA (Time Division-Synchronization Code Division Multiple Access, TD SDMA) system's high speed Physical Downlink Shared Channel.
Background technology
TD-SCDMA can support non-symmetrical service well, and this is very effective to satisfying the ever-increasing data traffic requirement of mobile communication subscriber.HSDPA (high speed downlink packet access) technology is a kind of technology that provides the high-speed down data business at the multi-user, can be used for satisfying the packet service that has the characteristic of bursting in the down link, as flow data service, interactive application.Data service has different traffic performances with speech business.Voice communication system adopts power control techniques offsetting the influence of channel fading for system usually, and obtaining metastable speed, and data service can be tolerated time-delay relatively, can tolerate the variation in short-term of speed.Therefore HSDPA attempts channel conditions is improved, but adopts corresponding speed according to channel situation.For this, HSDPA has introduced a kind of new transmission channel---and high speed descending sharing channel (HS-DSCH), the user shares descending sign indicating number resource and power resource, carries out time division multiplexing.Node B (Node B) is before emission HS-DSCH, and emission high-speed downstream control channel (HS-SCCH) notifies portable terminal (UE) some necessary parameter earlier.HS-SCCH is used to carry the physical layer that is used on the HS-DSCH decoding and controls signaling.By reading the information on the HS-SCCH, portable terminal can find HS-DSCH resource into this mobile terminal configuration according to physical layer information such as the code channel of its appointment, time slot, modulation systems.Portable terminal monitoring HS-SCCH checks whether the information of issuing oneself is arranged, and portable terminal begins to receive HS-DSCH if having then, and goes up configuration information by the HS-DSCH that obtains the data that receive are carried out demodulation.
According to the physical layer specification in the 3GPP agreement, for certain UE (portable terminal), HS-PDSCH (high-speed physical downlink shared channel (HS-PDSCH)) adopts spreading factor (Spread Factor, SF) channel code of 16 and 1 (SF=16,1).And, allow the multiplexing and timeslot multiplex of sign indicating number at a HS-DSCH TTI (HS-DSCH transmission time interval), but on all time slots, spreading factor can only adopt 16 or 1, HS-PDSCH must adopt identical channelization code set, and this channelization code set must continuous dispensing.
According to the NBAP in the 3GPP agreement (Node B Application Part) standard, for certain sub-district, the configuration of HS-DSCH is finished by " Physical Shared Channel is reshuffled (Physical Shared ChannelReconfiguration) " message.At control radio network controller (control radio network controller, CRNC) send in " Physical Shared Channel reconfiguration request (Physical SharedChannel Reconfiguration Request) " message of Node B (Node B), comprise information unit " HS-PDSCH TDDInformation ", indicate Node B and can dispose the HS-PDSCH physical channel on a plurality of code channels of a plurality of time slots, the channel code of each code channel adopts SF=16 or SF=1.
In the TD-SCDMA system, the HS-PDSCH configuration for UE requires channel code continuous dispensing and identical on a plurality of time slots that are used; And dispose for the HS-PDSCH of sub-district, the signalling sign indicating number does not require continuous dispensing on a plurality of time slots that are used, do not require identical yet.Like this, when the distribution of the HS-PDSCH of certain time slot in sub-district channel code is discontinuous, will influence the continuous dispensing of the HS-PDSCH channel code of UE, this will cause losing of information.
Summary of the invention
At the existing problem and shortage of channel code collocation method of Physical Downlink Shared Channel in the above-mentioned existing TD-SCDMA system, but the purpose of this invention is to provide a kind of collocation method of realizing the channel code of simple, the compatible strong and high-speed physical downlink shared channel (HS-PDSCH) that guarantee information is stable.
The present invention is achieved in that a kind of collocation method of channel code of high-speed physical downlink shared channel (HS-PDSCH), may further comprise the steps:
(1) network side during the configuration high-speed Physical Downlink Shared Channel, distributes continuous channel code to high-speed physical downlink shared channel (HS-PDSCH) on each time slot on a plurality of descending time slots of each sub-district;
(2) receive the high-speed down ward grouped access resource request for allocation of portable terminal after, the disposal ability and the business demand of described portable terminal judged in the base station, arrive the Resource Unit of described portable terminal according to the resource information dispensed of current distribution, judge whether described Resource Unit is distributed in a time slot, if, the base station with described resource unit allocation on a plurality of code channels of a descending time slot, otherwise on a plurality of code channels of a plurality of time slots, and it is continuous and identical to be assigned to the channel code of high-speed physical downlink shared channel (HS-PDSCH) of each time slot with described resource unit allocation in the base station.
Further, this method is further comprising the steps of:
After described portable terminal discharged high-speed down ward grouped access resource, the base station will regain this resource so that sub-distribution again.
Further, described step (1) distributes continuous channel code to realize by following mode to high-speed physical downlink shared channel (HS-PDSCH) on each time slot:
Channel code in system is concentrated, and disposes a beginning channel code and an end channel code, promptly constitutes the channel code of continuous high-speed physical downlink shared channel (HS-PDSCH) to the end channel code from the beginning channel code.
Further, on each time slot, distribute continuous channel code to realize in the described step (1) by following mode to high-speed physical downlink shared channel (HS-PDSCH):
Channel code in system is concentrated, dispose the number of a beginning channel code and desire configurating channel sign indicating number, promptly constitute the channel code of continuous high-speed physical downlink shared channel (HS-PDSCH) from the beginning channel code to this channel code that begins channel code and its skew number indication.
Utilize method of the present invention, in the TD-SCDMA system, when network side carried out the channel code configuration of high speed descending sharing channel, network side was the channel code of the continuous high-speed physical downlink shared channel (HS-PDSCH) of each cell configuration, and then had guaranteed the continuous of the channel code that portable terminal distributed.The present invention realizes simply having reduced the complexity of the channel code of system configuration HS-PDSCH.
Description of drawings
Fig. 1 is that the present invention is the flow chart of the channel code of mobile terminal configuration HS-PDSCH.
Embodiment
The present invention is described in further detail below in conjunction with accompanying drawing.
When network side by " Physical Shared Channel is reshuffled " process, during for cell configuration HSDPA resource, answer guaranteed conditions: at each time slot, the channel code of the HS-PDSCH that is disposed in the sub-district is continuous.At same time slot, the set that the channel code of all HS-PDSCH constitutes is called the channelization code set of HS-PDSCH; And at different time slots, the channelization code set of HS-PDSCH can be different.The method that disposes continuous HS-PDSCH channelization code set has multiple, as: the channel code in system is concentrated, dispose a beginning channel code and an end channel code, promptly constitute the channel code of continuous high-speed physical downlink shared channel (HS-PDSCH) from the beginning channel code to the end channel code; Perhaps, dispose the number of a beginning channel code and desire configurating channel sign indicating number, promptly constitute the channel code of continuous high-speed physical downlink shared channel (HS-PDSCH) from the beginning channel code to this channel code that begins channel code and its skew number indication.
Can realize the continuous configuration of HS-PDSCH channel code by revising information unit in " PHYSICAL SHARED CHANNELRECONFIGURATION REQUEST " message that RNC sends to Node B.Amended information unit is as shown in the table:
| IE (information unit) | Presence (existence) | Range (scope) | Semantics Description (note) |
| Message Discriminator | M (essential) | ||
| ... | ... | ... | |
| HS-PDSCH?TDD Information | 0..1 | ||
| >DL?Timeslot?and Code?Information | 0..<maxn oofDLts> | Mandatory?for?3.84Mcps TDD.Not?Applicable?to 1.28Mcps?TDD. | |
| >>Time?Slot | M | ||
| >>Midamble?Shift And?Burst?Type | M | ||
| >>Start Channelisation Code | M | ||
| >>Stop Channelisation Code | M | ||
| >>HS-PDSCH?and HS-SCCH?Total Power | O (optional) | Maximum?transmission power?to?be?allowed?for HS-PDSCH?and HS-SCCH?codes?in?the timeslot | |
| >DL?Timeslot?and Code?Information LCR | 0..<maxn oofDLtsL CR> | Mandatory?for?1.28Mcps TDD.Not?Applicable?to 3.84Mcps?TDD. | |
| >>Time?Slot?LCR | M | ||
| >>Midamble?Shift LCR | M | ||
| >>Start Channelisation Code | M |
| >>Stop Channelisation Code | M | ||
| >>HS-PDSCH?and HS-SCCH?Total Power | O | Maximum?transmission power?to?be?allowed?for HS-PDSCH?and HS-SCCH?codes?in?the timeslot | |
| ... | ... | ... | ... |
Like this, by " PHYSICAL SHARED CHANNEL RECONFIGURATION REQUEST " message each descending time slot has been disposed the end code (Stop Channelisation Code) of an opening code (Start Channelisation Code) and the 4it of a 4bit, thereby be that HS-DSCH has distributed a continuous HS-PDSCH channelization code set at time slot.It will be appreciated by those skilled in the art that if adopt the mode of the number of configuration beginning channel code and desire configurating channel sign indicating number also be feasible.
Node B returns " PHYSICALSHARED CHANNEL RECONFIGURATION RESPONSE " message to RNC after finishing the configuration of channel code of HS-PDSCH.
As shown in Figure 1, after receiving the high-speed down ward grouped access resource request for allocation of UE, Node B will (have available HSDPA resource according to the HSDPA ability of UE, business demand and the current available HSDPA resource of UE on certain time slot code channel, that is: idle code channel arranged on certain time slot) etc., for UE distributes the HSDPA resource, promptly be defined as the RU (Resource Unit, Resource Unit) that UE distributes.Here, minimum Resource Unit is a time slot and the pairing resource of code channel, that is: 1 RU=1 time slot * 1 code channel, and the spreading factor of code channel correspondence (SF, Spread Factor) is 16.
Judge whether the RU resource that UE needs can be distributed in a time slot, if can, then Node B is distributed in these RU on the time slot, promptly is distributed on a plurality of code channels of a descending time slot; If cannot, then NodeB is distributed in these RU on a plurality of code channels of a plurality of time slots, and guarantees that the channelization code set of the HS-PDSCH on each time slot is continuous and identical.This just guaranteed on each time slot the HS-PDSCH channelization code set of distributing for UE continuously.
Node B has been for after certain UE distributed the HSDPA resource, and the code channel on the time slot that this UE is taken is labeled as and takies; After UE had discharged the HSDPA resource, the code channel on the time slot that Node B takies this UE was labeled as the free time, so that Node B is for the sub-distribution again of these HSDPA resources.
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 skilled 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 the appended claim of the present invention.
Claims (5)
1, a kind of collocation method of channel code of high-speed physical downlink shared channel (HS-PDSCH) is characterized in that, this method may further comprise the steps:
(1) network side during the configuration high-speed Physical Downlink Shared Channel, distributes continuous channel code to high-speed physical downlink shared channel (HS-PDSCH) on each time slot on a plurality of descending time slots of each sub-district;
(2) receive the high-speed down ward grouped access resource request for allocation of portable terminal after, the disposal ability and the business demand of described portable terminal judged in the base station, arrive the Resource Unit of described portable terminal according to the resource information dispensed of current distribution, judge whether described Resource Unit is distributed in a time slot, if, the base station with described resource unit allocation on a plurality of code channels of a descending time slot, otherwise on a plurality of code channels of a plurality of time slots, and it is continuous and identical to be assigned to the channel code of high-speed physical downlink shared channel (HS-PDSCH) of each time slot with described resource unit allocation in the base station.
2, the collocation method of the channel code of high-speed physical downlink shared channel (HS-PDSCH) according to claim 1 is characterized in that, this method is further comprising the steps of:
After described portable terminal discharged high-speed down ward grouped access resource, the base station will regain this resource so that sub-distribution again.
3, the collocation method of the channel code of high-speed physical downlink shared channel (HS-PDSCH) according to claim 1 and 2, it is characterized in that, on each time slot, distribute continuous channel code to realize in the described step (1) by following mode to high-speed physical downlink shared channel (HS-PDSCH):
Channel code in system is concentrated, and disposes a beginning channel code and an end channel code, promptly constitutes the channel code of continuous high-speed physical downlink shared channel (HS-PDSCH) to the end channel code from the beginning channel code.
4, the collocation method of the channel code of high-speed physical downlink shared channel (HS-PDSCH) according to claim 1 and 2, it is characterized in that, on each time slot, distribute continuous channel code to realize in the described step (1) by following mode to high-speed physical downlink shared channel (HS-PDSCH):
Channel code in system is concentrated, dispose the number of a beginning channel code and desire configurating channel sign indicating number, promptly constitute the channel code of continuous high-speed physical downlink shared channel (HS-PDSCH) from the beginning channel code to this channel code that begins channel code and its skew number indication.
5, the collocation method of the channel code of high-speed physical downlink shared channel (HS-PDSCH) according to claim 3 is characterized in that, described Resource Unit is a spreading channel of a time slot.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2005101300305A CN100473223C (en) | 2005-12-08 | 2005-12-08 | Method for allocating channel code for high speed physcial down sharing channel |
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| CNB2005101300305A CN100473223C (en) | 2005-12-08 | 2005-12-08 | Method for allocating channel code for high speed physcial down sharing channel |
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| CN100473223C true CN100473223C (en) | 2009-03-25 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100531469C (en) * | 2006-08-23 | 2009-08-19 | 中兴通讯股份有限公司 | Method for configuring physical layer type of high-speed downlink share channel |
| CN101521914B (en) * | 2008-02-26 | 2012-02-08 | 三星电子株式会社 | Mapping method used for HS-SCCH resource allocation information field |
| WO2011074011A1 (en) * | 2009-12-16 | 2011-06-23 | Nsg Networks Private Limited | A base station subsystem configuring apparatus |
| WO2015139167A1 (en) * | 2014-03-17 | 2015-09-24 | 华为技术有限公司 | Resource allocation method and apparatus |
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