CN101282166B - Distribution method for dynamically scheduling physics channel training code - Google Patents
Distribution method for dynamically scheduling physics channel training code Download PDFInfo
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- CN101282166B CN101282166B CN200710090350A CN200710090350A CN101282166B CN 101282166 B CN101282166 B CN 101282166B CN 200710090350 A CN200710090350 A CN 200710090350A CN 200710090350 A CN200710090350 A CN 200710090350A CN 101282166 B CN101282166 B CN 101282166B
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Abstract
The present invention discloses a method for allocating the physical channel exercise code that is used for dynamic scheduling. The method comprises the following steps: S102, configuring dynamic scheduling resource to the node B by the wireless network controller, and the exercise code allocation information of the physical channel is not configured or configured but the node B ignores the exercise code allocation information; S104, allocating dynamic scheduling resource by the network side for the user facility, and at the same time allocating exercise code allocation information for the physical channel; and S106, allocating the dynamic scheduling resource for the user facility by the wireless network controller, and transmitting the exercise code allocation information configured for the physical channel to the user facility. Through the invention, the consistency of the node B and the exercise codes allocated at two sides of the user facility can be guaranteed, and at the same time a plurality of exercise code allocation modes can be supported thereby increasing the flexibility of the exercise code allocation mode.
Description
Technical field
The present invention relates to the communications field, relate more specifically to a kind of method for distributing exercise code of physical channel that is used for dynamic dispatching.
Background technology
In mobile communication application, multipath distortion possibly occur, therefore need to send some training sequences or the known data of some content, so that receiver carries out channel estimating.Estimate that the required packets of information of transmission channel characteristic is contained 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, and this also is well-known in this technical field.All needing midamble code from the up link of portable terminal to 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.Fig. 1 shows general burst (Burst) structure of TD-SCDMA, wherein just comprises midamble code.
Insert (Time Division-synchronization CodeDivision Multiple Access at TD SDMA; Be called for short TD-SCDMA) in the 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, 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
mLength for training sequence is fixed as 144;
The K value can be 2,4,6,8,10,12,14 and 16, and occurrence is by system information broadcast.
W is defined as P/K, P=128.
Obtain a new sequence like this:
Wherein, a preceding P element and vector m
pIdentical, the element of back then repeats preceding n element wherein, that is:
m
i＝m
1-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 confirmed by following formula:
In the TD-SCDMA system, be that subscriber equipment (User Equipment is called for short UE) when distributing physical channel resources, needs to dispose the relevant information of midamble code distribution.Midamble code is the part of physical channel configuration, accomplishes configuration by high level, has three kinds of allocation plans:
The specific midamble code of UE is distributed: high level is that Midamble sign indicating number of each UE explicitly configuration is as all DL or UL physical channel.
The acquiescence midamble code is distributed: physical layer is the Midamble sign indicating number of an every DL or an acquiescence of UL physical channel configuration according to the correlated channels sign indicating number.
Public midamble code is distributed: the number of channelization codes that physical layer has existed according to corresponding descending time slot is given all DL physical channel configuration Midamble sign indicating numbers.
If it is that certain physics channel allocation midamble code and high level do not use public midamble code allocative decision through the signaling indication yet that high level does not have explicitly, then physical layer will adopt acquiescence midamble code allocative decision to accomplish the distribution of midamble code.When adopting acquiescence midamble code allocative decision, there be fixing getting in touch between midamble code and the spreading code, and with each spreading code that is applied to respectively in the related time-slot.The different sub-district 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 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 need dispose specific midamble code; Other two kinds of allocation models only need the assignment of allocation pattern.
In present TD-SCDMA system; When giving UE static allocation physical channel, the radio network controller of network side (Radio Network Controller is called for short RNC) 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 and this UE, thus make Node B and UE when transmitting and receiving physical channel, its corresponding midamble code unanimity.After the TD-SCDMA system introduces HSDPA (high speed downlink packet access technology) and HSUPA (high-speed uplink packet access technique) technology; Its corresponding service physical channel is a shared resource pond of being distributed by RNC; And distribute to UE 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 agreement, at network side, RNC is configuration midamble code assignment information when passing through Iub interface to Node B configuration service physical channel shared resource pond just; To UE, RNC can be through the Uu interface to each UE configuration midamble code assignment information.This distribution method has limited the allocation model of midamble code, and it is inconsistent to cause that easily network side Node B and UE midamble code are distributed.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
In view of above one or more problems, the invention provides a kind of method for distributing exercise code of physical channel that is used for dynamic dispatching.
The method for distributing exercise code of physical channel that is used for dynamic dispatching according to the present invention may further comprise the steps: S102; Radio network controller is to Node B configuration dynamic dispatching resource, not the midamble code assignment information of the midamble code assignment information of configures physical channel or configures physical channel but Node B is ignored the midamble code assignment information; S104, network side are user equipment allocation dynamic dispatching resource, are physical channel configuration midamble code assignment information simultaneously; And S106, radio network controller is to user equipment allocation dynamic dispatching resource, and will be sent to subscriber equipment for the midamble code assignment information of physical channel configuration.
Wherein, step S104 comprises: S1042, and radio network controller is initiated Radio Link and is set up process, synchronized radio link reconfiguration procedure or asynchronous wireless links reconfiguration course, is the user equipment allocation grouped access-in resource at network side; And S1044, transmission is used for the midamble code assignment information of physical channel between radio network controller and Node B, and disposes maximum midamble code number.
Wherein, radio network controller or Node B are configured to the midamble code allocation model in the midamble code assignment information following a kind of: acquiescence midamble code allocation model, the specific midamble code allocation model of subscriber equipment, public midamble code allocation model.
Wherein, For a subscriber equipment; Under the situation of midamble code allocation model for acquiescence midamble code allocation model; If in the process of a dynamic dispatching physical channel resources, obtained a plurality of midamble code, then Node B and subscriber equipment are chosen the midamble code of one of a plurality of midamble code as all physical channels.
Wherein, Node B and subscriber equipment are chosen the midamble code of the corresponding midamble code of the minimum channel code of numbering as all physical channels.
Wherein, under the distribution and the same number of situation of maximum midamble code of the channel code of each dynamic time gap scheduling physical channel, the dynamic dispatching physical channel on all time slots all uses identical midamble code.Distribution and the maximum midamble code number of dispatching the channel code of physical channel in each dynamic time gap dispose under the condition of different; Dynamic dispatching physical channel on the identical time slot all uses identical midamble code, and the dynamic dispatching physical channel on the different time-gap all uses identical midamble code or different midamble code.
Method for distributing exercise code of physical channel according to the present invention is used for TD-SCDMA system.
Through the present invention, can guarantee the consistency of the midamble code that Node B and subscriber equipment both sides are distributed, can support multiple midamble code allocation model simultaneously, thereby increase the flexibility of midamble code allocation model.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the flow chart according to the method for distributing exercise code of physical channel that is used for dynamic dispatching of the embodiment of the invention; And
Fig. 2 is the flow chart that is used for the method for distributing exercise code of physical channel of dynamic dispatching according to another embodiment of the present invention.
Embodiment
With reference to accompanying drawing, specify embodiment of the present invention below.
With reference to figure 1, the method for distributing exercise code of physical channel that is used for dynamic dispatching according to the embodiment of the invention is described.As shown in Figure 1; This method for distributing exercise code of physical channel may further comprise the steps: S102; Radio network controller is to Node B configuration dynamic dispatching resource, not the midamble code assignment information of the midamble code assignment information of configures physical channel or configures physical channel but Node B is ignored the midamble code assignment information; S104, network side are user equipment allocation dynamic dispatching resource, are physical channel configuration midamble code assignment information simultaneously; And S106, radio network controller is to user equipment allocation dynamic dispatching resource, and will be sent to subscriber equipment for the midamble code assignment information of physical channel configuration.
Wherein, step S104 comprises: S1042, and radio network controller is initiated Radio Link and is set up process, synchronized radio link reconfiguration procedure or asynchronous wireless links reconfiguration course, is the user equipment allocation grouped access-in resource at network side; And S1044, transmission is used for the midamble code assignment information of physical channel between radio network controller and Node B, and disposes maximum midamble code number.
Wherein, radio network controller or Node B are configured to the midamble code allocation model in the midamble code assignment information following a kind of: acquiescence midamble code allocation model, the specific midamble code allocation model of subscriber equipment, public midamble code allocation model.
Wherein, For a subscriber equipment; Under the situation of midamble code allocation model for acquiescence midamble code allocation model; If in the process of a dynamic dispatching physical channel resources, obtained a plurality of midamble code, then Node B and subscriber equipment are chosen the midamble code of one of a plurality of midamble code as all physical channels.
Wherein, Node B and subscriber equipment are chosen the midamble code of the corresponding midamble code of the minimum channel code of numbering as all physical channels.
Wherein, under the distribution and the same number of situation of maximum midamble code of the channel code of each dynamic time gap scheduling physical channel, the dynamic dispatching physical channel on all time slots all uses identical midamble code.Distribution and the maximum midamble code number of dispatching the channel code of physical channel in each dynamic time gap dispose under the condition of different; Dynamic dispatching physical channel on the identical time slot all uses identical midamble code, and the dynamic dispatching physical channel on the different time-gap all uses identical midamble code or different midamble code.
The present invention can solve high speed downlink packet access technology (High Speed DownlinkPacket Access; Abbreviation HSDPA), the midamble code assignment problem of the dynamic dispatching physical channel in high-speed uplink packet access technique (High SpeedUplink Packet Access is called for short HSUPA) and the follow-up similar techniques.Be that example is described with the midamble code assignment problem that solves in the HSDPA technology below, for the HSUPA technology, the scheme of solution is basic identical.
As shown in Figure 2, the method for distributing exercise code of this dynamic dispatching physical channel may further comprise the steps:
S202, RNC do not dispose the midamble code assignment information of HS-PDSCH physical channel to the shared resource pond of Node B configuration high-speed Physical Downlink Shared Channel (HighSpeed Physical Downlink Shared Channel, be called for short HS-PDSCH) time.
In the Physical Shared Channel reconfiguration course that RNC initiates, the Physical Shared Channel reconfiguration request message is sent to Node B in the HS-PDSCH physical channel shared resource pond that the configuration dynamic dispatching is used.In this message, do not dispose the midamble code assignment information of HS-PDSCH physical channel, perhaps dispose the midamble code assignment information of HS-PDSCH physical channel but Node B ignores this information.
S204, network side are HS-PDSCH physical channel resources configuration midamble code assignment information when distributing the HSDPA resource for UE.
Radio Link in that RNC initiates is set up in process, synchronised radio link reconfigure set-up procedure or the asynchronous wireless links reconfiguration course, is that UE distributes the HSDPA resource at network side.And send to " Radio Link set up request ", " radio link reconfiguration preparations " of Node B and " radio link reconfiguration request information or Node B send in RNC's " Radio Link is set up response ", " radio link reconfiguration is ready " and " radio link reconfiguration response " message, are included as the Midamble ShiftLCR information unit that the HS-PDSCH physical channel disposes the midamble code assignment information at RNC.
Wherein, the former is by RNC configuration midamble code assignment information, and the latter distributes the midamble code assignment information by Node B.RNC or Node B can be configured to give tacit consent to midamble code or the specific midamble code distribution of UE with the midamble code allocation model in the midamble code information of HS-PDSCH physical channel according to actual conditions, dispose Midamble Configuration LCR simultaneously, i.e. the K value.
S206, RNC will send to UE for the midamble code assignment information of HS-PDSCH physical channel configuration when UE distributes the HSDPA resource.
The RRC that RNC initiates connect the process of setting up, radio bearer set up process, radio bearer reconfiguration course, radio bearer dispose procedure, transmission channel reconfiguration course, physical channel reconfiguration course, and cell updating course etc. in; In the UE side is that UE distributes the HSDPA resource, sends corresponding " RRC connects foundation ", " radio bearer foundation ", " radio bearer is reshuffled ", " radio bearer release ", " transmission channel is reshuffled ", " physical channel is reshuffled " and " cell update affirmation " message to UE.In these message, will be that the midamble code assignment information of the HS-PDSCH physical channel configuration of this UE sends to UE in step S204, consistent with the midamble code assignment information that keeps Node B and UE.
Wherein, To a UE; If the midamble code allocation model is acquiescence midamble code allocation model; Then in dynamic dispatching HSDPA physical channel resources process, if obtain a plurality of midamble code by acquiescence midamble code allocation model, then Node B and UE choose the midamble code of one of them midamble code as all physical channels.
To 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) or a plurality of HS-PDSCH physical channels on a plurality of time slots on the time slot be assigned to a UE; This moment, different channel codes possibly 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 corresponding midamble code of the minimum channel code 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 the HS-PDSCH physical channel of each time slot and/or the configuration of K value can be inequality; HS-PDSCH physical channel on the then identical time slot all uses identical midamble code, and the HS-PDSCH physical channel on the different time-gap can use different midamble code.
Through the present invention, can guarantee the consistency of the midamble code that Node B and subscriber equipment both sides are distributed, can support multiple midamble code allocation model simultaneously, thereby increase the flexibility of midamble code allocation model.
The above is merely embodiments of the invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within the claim scope of the present invention.
Claims (8)
1. a method for distributing exercise code of physical channel that is used for dynamic dispatching is characterized in that, may further comprise the steps:
S102, radio network controller be to Node B configuration dynamic dispatching resource, not the midamble code assignment information of configures physical channel or dispose the midamble code assignment information of said physical channel but said Node B is ignored said midamble code assignment information;
S104, network side are the said dynamic dispatching resource of user equipment allocation, are said physical channel configuration midamble code assignment information simultaneously; And
S106, said radio network controller be to the said dynamic dispatching resource of said user equipment allocation, and will be sent to said subscriber equipment for the midamble code assignment information of said physical channel configuration.
2. method for distributing exercise code of physical channel according to claim 1 is characterized in that, said step S104 comprises:
S1042, said radio network controller is initiated Radio Link and is set up process, synchronized radio link reconfiguration procedure or asynchronous wireless links reconfiguration course, is said user equipment allocation grouped access-in resource at network side; And
S1044, transmission is used for the midamble code assignment information of physical channel between said radio network controller and said Node B, and disposes maximum midamble code number.
3. method for distributing exercise code of physical channel according to claim 2; It is characterized in that said radio network controller or said Node B are configured to the midamble code allocation model in the said midamble code assignment information following a kind of: acquiescence midamble code allocation model, the specific midamble code allocation model of subscriber equipment, public midamble code allocation model.
4. method for distributing exercise code of physical channel according to claim 3; It is characterized in that; For a subscriber equipment; Under the situation of said midamble code allocation model for acquiescence midamble code allocation model, if in the process of a dynamic dispatching physical channel resources, obtained a plurality of midamble code, then said Node B and said subscriber equipment are chosen the midamble code of one of said a plurality of midamble code as all physical channels.
5. method for distributing exercise code of physical channel according to claim 4 is characterized in that, said Node B and subscriber equipment are chosen the midamble code of the corresponding midamble code of the minimum channel code of numbering as all physical channels.
6. method for distributing exercise code of physical channel according to claim 4; It is characterized in that; Under the distribution and the same number of situation of said maximum midamble code of the channel code of the said physical channel of each time slot, the said physical channel on all time slots all uses identical midamble code.
7. method for distributing exercise code of physical channel according to claim 5; It is characterized in that; Under the distribution and said maximum midamble code number configuration condition of different of the channel code of the said physical channel of each time slot; Said physical channel on the identical time slot all uses identical midamble code, and the said physical channel on the different time-gap all uses identical midamble code or different midamble code.
8. method for distributing exercise code of physical channel according to claim 7 is characterized in that said method is used for TD-SCDMA system.
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| CN1823490A (en) * | 2003-07-18 | 2006-08-23 | 摩托罗拉公司 | Method and device for determining the link quality in an OFDM network |
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| CN1823490A (en) * | 2003-07-18 | 2006-08-23 | 摩托罗拉公司 | Method and device for determining the link quality in an OFDM network |
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