CN101154972B - Multiplexing method for part of special physical channel - Google Patents
Multiplexing method for part of special physical channel Download PDFInfo
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- CN101154972B CN101154972B CN2006101133858A CN200610113385A CN101154972B CN 101154972 B CN101154972 B CN 101154972B CN 2006101133858 A CN2006101133858 A CN 2006101133858A CN 200610113385 A CN200610113385 A CN 200610113385A CN 101154972 B CN101154972 B CN 101154972B
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- physical channel
- dedicated physical
- dpch
- multiplexing
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Abstract
The present invention discloses a method for reusing the frictional dedicated physical channel to realize that a plurality of users reuses one F-DPCH, and the method comprises the steps of: step one, dividing the reusing boundary of the existent frictional dedicated physical channel and confirming the deviation value of the default dedicated physical channel; step two, calculating the timing deviation of the frictional dedicated physical channel relative to the main common control physical channel according to the deviation value of the default dedicated physical channel; step three, confirming the reusing boundary value according to the timing deviation of the frictional dedicated physical channel relative to the main common control physical channel; and step four, adjusting the deviation value of the default dedicated physical channel according to the reusing boundary value, then calculating the timing deviation of the frictional dedicated physical channel relative to the main common control physical channel according to the deviation value of the adjusted default dedicated physical channel. The invention staggers the F-DPCH which is shared by a plurality of users by time to realize that a plurality of users reuses one frictional dedicated physical channel.
Description
Technical field
The present invention relates to special-purpose physical channel multiplex technique in the mobile communication system, particularly relate to fractional dedicated physical channel (Fraction-Dedicated Physical Channel, multiplexing method F-DPCH).
Background technology
The flank speed that the R99 standard agreement of WCDMA (Wide Code Division Multiple Access, Wideband Code Division Multiple Access (WCDMA)) mobile communication system offers the user is generally 384kbps, and hot zones can provide the speed of 2Mbps.From the supported dedicated channel (DedicatedChannel that is used for transmitting grouped data of R99, DCH) and DSCH Downlink Shared Channel (Downlink Shared Channel, DSCH) performance, for the user in general area, the rate bandwidth that R99 provides can not satisfy hot zones user's demand; Therefore the R5 standard agreement has been introduced high speed downlink packet access (High Speed DownlinkPacket Access, HSDPA) function, introduce a kind of high-speed packet simultaneously and shared transmission channel (HighSpeed Downlink Shared Channel, HS-DSCH), this channel adopts time-division and sign indicating number branch mode, and this channel has adopted to mix and has retransmitted (Hybrid Automatic Request automatically, HARQ) and Adaptive Modulation and Coding (Adaptive Modulation and Coding, AMC) technology makes peak rate can reach 10.8Mbps～30Mbps.Its final purpose is by providing high speed packet service to be inserted the capacity that increases system and reduces transmission delay to improve the user to service quality (Quality ofService, requirement QoS).
In 3GPP R5 agreement, 3GPP (3rd Generation Partnership Project) is a third generation partner program, though the descending shared channel of having introduced, but up still is dedicated channel, do closed-loop power control in order to cooperate up DPCH, therefore follow the use of HS-DSCH also to need to dispose a DPCH (Dedicated Physical Channel, DPCH), though be that the user sends data with shared channel, still be its configure dedicated channel, and will take a private code resource; Although under the situation of a carrier signaling, its spreading factor is 256, but along with increasing of number of users, the sign indicating number resource of shared DPCH is still very many, if also there is the user of some other real time business in the sub-district, then can use the business of shared channel to admit failure because of DPCH sign indicating number resource congestion.Therefore the R6 agreement is improved the HSDPA system, increased a kind of fractional dedicated physical channel (F-DPCH), this physical channel only carries transmitting power control (Transmit Power Control, TPC) bit, be used for and special physical controlling channel of upward (Dedicated Physical Control Channel, DPCCH) do inner-loop power control, in a time slot, the TPC bit only takies 256 chips (Chip).The purpose of introducing F-DPCH is to save descending sign indicating number resource, and promptly the multi-user adopts time division way to share a F-DPCH physical channel.But do not provide the method for sharing F-DPCH in the agreement.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of multiplexing method of fractional dedicated physical channel, is used to realize the multiplexing F-DPCH physical channel of a plurality of users.
To achieve these goals, the invention provides a kind of multiplexing method of fractional dedicated physical channel, be used to realize the multiplexing fractional dedicated physical channel of a plurality of users, it is characterized in that, comprising:
Step 1 is cut apart the multiplexing border that has fractional dedicated physical channel and is determined default DPCH deviate;
Step 2 is asked for the timing offset of described fractional dedicated physical channel with respect to Primary Common Control Physical Channel according to described default DPCH deviate;
Step 3 is determined multiplexing boundary value according to described fractional dedicated physical channel with respect to the timing offset of Primary Common Control Physical Channel; And
Step 4 is adjusted described default DPCH deviate according to described multiplexing boundary value, asks for the timing offset that described fractional dedicated physical channel with respect to Primary Common Control Physical Channel is according to adjusted described default DPCH deviate again.
The multiplexing method of described fractional dedicated physical channel, wherein, before the described step 1, comprise that also one judges whether to exist the step of described fractional dedicated physical channel, if exist, direct execution in step one, otherwise newly apply for a part of DPCH, execution in step one again.
The multiplexing method of described fractional dedicated physical channel, wherein, in the described step 1, described fractional dedicated physical channel is divided into 10 multiplexing borders, corresponding multiplexing border number employing serial number or great-jump-forward numbering by the mode that a time slot is cut apart by 256 chips.
The multiplexing method of described fractional dedicated physical channel, wherein, in the described step 1, described default DPCH deviate is the multiple sum of current default DPCH deviate and 256, and described multiple is 1,2, ..., M, M are the natural number less than 1198.
The multiplexing method of described fractional dedicated physical channel, wherein, described step 2 is specially:
Step 51, make described default DPCH deviate divided by 38400 remainder as the chip deviation; And
Step 52, when the chip deviation divided by 256 remainder less than 128 the time, then the chip deviation divided by 256 merchant as the timing offset of described fractional dedicated physical channel with respect to Primary Common Control Physical Channel; Otherwise in the time of being divided exactly by 256 as if the chip deviation, then discussing as the timing offset of described fractional dedicated physical channel with respect to Primary Common Control Physical Channel, if when the chip deviation can not be divided exactly by 256, then the merchant is added 1 as the timing offset of described fractional dedicated physical channel with respect to Primary Common Control Physical Channel.
The multiplexing method of described fractional dedicated physical channel, wherein, described step 3 is specially:
Step 61, make F-DPCH Frame Offset take advantage of 256 long-pending divided by 2560 remainder as X, Y is X divided by 256 merchant, Y is a Y in the time slot multiplexing border; Wherein, F-DPCH FrameOffset is the timing offset of described fractional dedicated physical channel with respect to Primary Common Control Physical Channel; And
Step 62, determine multiplexing boundary value D according to different situations:
If exist Y not by the multiplexing border of the fractional dedicated physical channel of usefulness number, then multiplexing this fractional dedicated physical channel channel, D=Y;
If there is not the idle border of Y, but have the fractional dedicated physical channel that has not been re-used, then adopt the fractional dedicated physical channel that has not been re-used idle multiplexing border number be D multiplexing border;
If all described fractional dedicated physical channels all have been re-used, then apply for a new portion DPCH, Y is the multiplexing border of this fractional dedicated physical channel, D=Y.
The multiplexing method of described fractional dedicated physical channel wherein, in the described step 62, comprises that also one judges whether to exist Y not by the step on the multiplexing border of the fractional dedicated physical channel of usefulness.
The multiplexing method of described fractional dedicated physical channel, wherein, in the described step 4, the described step of adjusting described default DPCH deviate according to described multiplexing boundary value is specially:
If D=Y, then Default DPCH Offset Value need not adjust;
If D＞Y, then Default DPCH Offset Value=Default DPCH Offset Value+ (D-Y) * 256, ask for F-DPCH Frame Offset again;
If D＜Y, then Default DPCH Offset Value=Default DPCH Offset Value+ (10-Y+D) * 256, ask for F-DPCH Frame Offset again;
Wherein, Default DPCH Offset Value is described default DPCH deviate, and F-DPCH Frame Offset is the timing offset of described fractional dedicated physical channel with respect to Primary Common Control Physical Channel.
The invention provides the method for a kind of multiuser multiplexing F-DPCH, it staggers from the time by F-DPCH channel that a plurality of users are shared, the time of the used TPC bit of F-DPCH physical channel that promptly guarantees a plurality of users is not overlapping, to guarantee F-DPCH of multiuser multiplexing, only take a channel code.So have following tangible technique effect:
1), can save a large amount of downgoing channelized codes, improve the utilance of sign indicating number resource, and then improve the capacity of system;
2), the default DPCH deviate of coupling system (Default DPCH OffsetValue) comes together to determine F-DPCH and P-CCPCH (Primary-Common Control PhysicalChannel again simultaneously, Primary Common Control Physical Channel) timing offset can reduce the peak-to-average force ratio of system.
Describe the present invention below in conjunction with the drawings and specific embodiments, but not as a limitation of the invention.
Description of drawings
Fig. 1 is the method flow diagram of technical solution of the present invention;
Fig. 2 is the specific embodiment of technical solution of the present invention.
Embodiment
See also shown in Figure 1ly, be the method flow diagram of technical solution of the present invention.This technical scheme may further comprise the steps:
In the above-mentioned steps 101, multiplexing border number can be 0,1,2,3,4,5,6,7,8,9, but is not limited to this numbering, also can be great-jump-forward.
In the above-mentioned steps 102, determine that the method for Default DPCH Offset Value can be used following formula:
Default?DPCH?Offset?Value＝Current?Default?DPCH?Offset?Value+256*n；
Wherein, n is 1,2 ..., the M natural number, the span of M is: 1～1198.
But be not limited to and only use this formula, the initial value of Current Default DPCH Offset Value is 0.
In the above-mentioned steps 103, determine that the method for F-DPCH Frame Offset is as follows:
Chip?Offset＝mod(Default?DPCH?Offset?Value，38400)；(1)
Ifmod(Chip?Offset，256)＜128
F-DPCH?Frame?Offset＝round(Chip?Offset/256)；(2)
Else
F-DPCH?Frame?Offset＝ceil(Chip?Offset/256)；(3)
End
Wherein, round () is following bracket function, and ceil () goes up bracket function, and mod () gets cofunction.
Determine F-DPCH Frame offset by formula (1)～(3), but be not limited to said method.
In the above-mentioned steps 104, determine that multiplexing border comprises the steps:
A401), make X=mod (F-DPCH Frame Offset*256,2560), Y=X/256, Y are a Y in the time slot multiplexing border;
A402), if exist Y not by the multiplexing border of the F-DPCH of usefulness number, then multiplexing this F-DPCH channel, D=Y;
A403),, but have the F-DPCH physical channel that has not been re-used if there is not the idle border of Y, then adopt the F-DPCHs that has not been re-used idle multiplexing border number (D multiplexing border);
A404), if all F-DPCH all have been re-used, then apply for a new F-DPCH, Y is its multiplexing border, D=Y.
In the above-mentioned steps 105, the method for adjusting Default DPCH Offset Value according to the multiplexing boundary value of determining is as follows:
A501), if D=Y, then Default DPCH Offset Value need not adjust;
A501), if D＞Y, then Default DPCH Offset Value=Default DPCH OffsetValue+ (D-Y) * 256, redefine F-DPCH Frame Offset according to method in the step 102 again;
A502), if D＜Y, then Default DPCH Offset Value=Default DPCH OffsetValue+ (10-Y+D) * 256, redefine F-DPCH Frame Offset according to method in the step 102 again.
See also shown in Figure 2ly, be the specific embodiment of technical solution of the present invention.Present embodiment provides the multiplexing method of a kind of multiuser multiplexing F-DPCH, is applicable to the situation of setting up Radio Link in new sub-district, and this multiplexing method specifically comprises the steps:
Step 201, when user's business has been distributed the HS-DSCH channel for it, and signaling can be carried on the HS-DSCH, and do not exist other service needed to use DPCH, then can distribute the F-DPCH physical channel resources for this user;
Step 202 is judged the current F-DPCH physical channel that whether exists, if the current F-DPCH physical channel that do not exist, then execution in step 203, if the current F-DPCH physical channel that existed, then execution in step 204;
Step 203 is applied for a new F-DPCH physical channel, execution in step 204;
Step 204 to already present F-DPCH physical channel, is cut apart a time slot according to 256 chips, may be partitioned into numbering and be respectively 0,1,2,3,4,5,6,7,8,9 256 borders;
Step 205, determine user default DPCH deviate Default DPCH Offset Value:
Default?DPCH?Offset?Value＝Current?Default?DPCH?Offset?Value+256；
Step 206 is calculated F-DPCH Frame Offset according to formula (1)～(3);
Step 207, calculate the border Y that needs distribution:
X＝mod(F-DPCH?Frame?Offset*256，2560)，Y＝X/256；
Step 208 is determined reusable border number, particularly,
Judge whether to exist Y not by the multiplexing border of the F-DPCH of usefulness, if exist, then multiplexing this F-DPCH channel changes step 213 over to; If do not exist, then change step 209 over to;
Step 209, check whether exist the F-DPCH that has not been re-used idle 256 borders number, if other idle borders are arranged, then change step 210 over to, if do not find idle multiplexing border, then change step 212 over to;
Step 210 finds first to be the boundary value D that is distributed, and continues step 211;
Step 211 is adjusted Default DPCH Offset Value according to determined boundary value D, and adopts formula (1)～(3) to recomputate F-DPCH FrameOffset according to Default DPCH Offset Value;
If D＞Y, then Default DPCH Offset Value=Defsult DPCH Offset Value+ (D-Y) * 256;
If D＜Y, then Default DPCH Offset Value=Default DPCH Offset Value+ (10-Y+D) * 256.
Step 212 is applied for a new F-DPCH physical channel, and Y is this user's multiplexing border number, continues step 213; And
Step 213, multiplexing information by signaling message notify Node B (Node B) and subscriber equipment (User Equipment, UE).
The present invention according to the frame structure of F-DPCH as can be known, when a user uses a F-DPCH physical channel, the TPC bit has only accounted for 256 Chip in the middle of time slot, other bit of time slot all adopt discontinuous transmission (Discontinuous Transmission, DTX).Therefore can dispose the F-DPCH physical channel of same channelization codes to a plurality of users, but the F-DPCH of different user is with respect to the timing (τ of P-CCPCH
F-DPCH, p) will stagger, guarantee that promptly the TPC bit of different user is not overlapping.A time slot has 2560 Chip, τ
F-DPCH, pBe 256 multiple, therefore as can be known, a F-DPCH at most can multiplexing 10 users.
The present invention staggers from the time by F-DPCH channel that a plurality of users are shared, guarantees that promptly time of the used TPC bit of F-DPCH physical channel of a plurality of users is not overlapping, guarantees F-DPCH of multiuser multiplexing, only takies a channel code.
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (5)
1. the multiplexing method of a fractional dedicated physical channel is used to realize the multiplexing fractional dedicated physical channel of a plurality of users, it is characterized in that, comprising:
Step 1 is cut apart the multiplexing border that has fractional dedicated physical channel and is determined default DPCH deviate;
Step 2 is asked for the timing offset of described fractional dedicated physical channel with respect to Primary Common Control Physical Channel according to described default DPCH deviate;
Step 3 is determined multiplexing boundary value according to described fractional dedicated physical channel with respect to the timing offset of Primary Common Control Physical Channel; And
Step 4 is adjusted described default DPCH deviate according to described multiplexing boundary value, asks for the timing offset that described fractional dedicated physical channel with respect to Primary Common Control Physical Channel is according to adjusted described default DPCH deviate again;
Cut apart described in the described step 1 and exist the multiplexing border of fractional dedicated physical channel to be, by the mode that a time slot is cut apart by 256 chips described fractional dedicated physical channel is divided into 10 multiplexing borders, corresponding multiplexing border number employing serial number or great-jump-forward numbering;
In the described step 1, describedly determine that default DPCH deviate is, default DPCH deviate equals the multiple sum of current default DPCH deviate and 256, and described multiple is 1,2 ..., M, M are the natural number less than 1198;
Described step 2 is specially:
Make described default DPCH deviate divided by 38400 remainder as the chip deviation;
If the chip deviation divided by 256 remainder less than 128, then the chip deviation divided by 256 merchant as the timing offset of described fractional dedicated physical channel with respect to Primary Common Control Physical Channel; Otherwise, if the chip deviation can be divided exactly by 256, then discussing as the timing offset of described fractional dedicated physical channel with respect to Primary Common Control Physical Channel, if the chip deviation can not be divided exactly by 256, then the merchant is added 1 as the timing offset of described fractional dedicated physical channel with respect to Primary Common Control Physical Channel.
2. the multiplexing method of fractional dedicated physical channel according to claim 1, it is characterized in that, before the described step 1, comprise that also one judges whether to exist the step of described fractional dedicated physical channel, if exist, direct execution in step one, otherwise newly apply for a part of DPCH, execution in step one again.
3. the multiplexing method of fractional dedicated physical channel according to claim 1 is characterized in that, described step 3 is specially:
Step 61, make described fractional dedicated physical channel with respect to the timing offset F-DPCH Frame Offset of Primary Common Control Physical Channel take advantage of 256 long-pending divided by 2560 remainder as X, Y is X divided by 256 merchant, Y is a Y in the time slot multiplexing border; And
Step 62, determine multiplexing boundary value D according to different situations:
If exist Y not by the multiplexing border of the fractional dedicated physical channel of usefulness number, then multiplexing this fractional dedicated physical channel channel, D=Y;
If there is not the idle border of Y, but have the fractional dedicated physical channel that has not been re-used, then adopt the fractional dedicated physical channel that has not been re-used idle multiplexing border number be D multiplexing border;
If all described fractional dedicated physical channels all have been re-used, then apply for a new portion DPCH, Y is the multiplexing border of this fractional dedicated physical channel, D=Y.
4. the multiplexing method of fractional dedicated physical channel according to claim 3 is characterized in that, in the described step 62, comprises that also one judges whether to exist Y not by the step on the multiplexing border of the fractional dedicated physical channel of usefulness.
5. according to the multiplexing method of claim 3 or 4 described fractional dedicated physical channels, it is characterized in that in the described step 4, the described step of adjusting described default DPCH deviate according to described multiplexing boundary value is specially:
If D=Y, then described default DPCH deviate Default DPCH Offset Value need not adjust;
If D＞Y, then Default DPCH Offset Value=Default DPCH Offset Value+ (D-Y) * 256, ask for F-DPCH Frame Offset again;
If D＜Y, then Default DPCH Offset Value=Default DPCH Offset Value+ (10-Y+D) * 256, ask for F-DPCH Frame Offset again.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005122425A2 (en) * | 2004-06-04 | 2005-12-22 | Qualcomm Incorporated | Multiplexing of w-cdma and ofdm signals in a wireless communication system |
| WO2006004189A1 (en) * | 2004-07-01 | 2006-01-12 | Nec Corporation | Process for assigning radio resources between a number of multiplexed transport channels in a physical channel |
| CN1806401A (en) * | 2003-07-14 | 2006-07-19 | 三星电子株式会社 | Method and apparatus for generating packet data to support multiple services in a wireless packet data communication system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1806401A (en) * | 2003-07-14 | 2006-07-19 | 三星电子株式会社 | Method and apparatus for generating packet data to support multiple services in a wireless packet data communication system |
| WO2005122425A2 (en) * | 2004-06-04 | 2005-12-22 | Qualcomm Incorporated | Multiplexing of w-cdma and ofdm signals in a wireless communication system |
| WO2006004189A1 (en) * | 2004-07-01 | 2006-01-12 | Nec Corporation | Process for assigning radio resources between a number of multiplexed transport channels in a physical channel |
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