CN109275189A - Uplink service requesting method and device in a kind of multi-sub-band system - Google Patents
Uplink service requesting method and device in a kind of multi-sub-band system Download PDFInfo
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- CN109275189A CN109275189A CN201710582690.XA CN201710582690A CN109275189A CN 109275189 A CN109275189 A CN 109275189A CN 201710582690 A CN201710582690 A CN 201710582690A CN 109275189 A CN109275189 A CN 109275189A
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- service request
- uplink service
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0446—Resources in time domain, e.g. slots or frames
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The present invention provides the uplink service requesting methods and device in a kind of multi-sub-band system, which comprises S1, obtains uplink service request signal；S2, the uplink service request signal, in the non-resident area of the multi-sub-band system, collocating uplink service request channel are based on；S3, channel is requested based on the uplink service, completes uplink service request.Uplink service requesting method and device in a kind of multi-sub-band system proposed by the present invention, by the way that in the non-resident area of multi-sub-band system, collocating uplink service request channel when so that user being scheduled for workspace, is still able to carry out service request.
Description
Technical field
The present invention relates to fields of communication technology, more particularly, to the uplink service requesting party in a kind of multi-sub-band system
Method and device.
Background technique
It is currently, there are a kind of multi-subband communication system, the authorization frequency point of the multi-subband communication system is discrete to be distributed in
223.525MHz-231.65MHz frequency range on, the bandwidth of each frequency point is 25KHz.Wherein, the authorization frequency point is divided into
Resident area's subband, remaining frequency point are divided into workspace subband, and resident area's subband can further be divided into synchronous subband and business
Band.Position uplink pilot time slot physical channel (UpPTS) in each service sub-band is assigned to uplink service request
The position of (Service Request, SR) produces 8 lead codes (Preamble) by cyclic shift on this position.
The interference of neighboring community in order to prevent, in every 8 radio frames, each cell can be assigned to a UpPTS time slot
Uplink SR transmission is carried out, each cell determines the radio frames selected by the mode corresponding with frame number mould 8 of cell ID number mould 8
It is which of 8 radio frames.The SR channel architecture of current multi-subband communication system is as shown in Figure 1, each cell is total
There are 40 SR scheduling resources.
But in the prior art, user may only do service request by SR channel in resident area, but when user is adjusted
When spending the work of non-resident area, since SR channel is not configured in non-resident area, at this time if there is uplink service reaches, user can not be into
Row service request.
Summary of the invention
The present invention provides a kind of a kind of multi-sub-band system for overcoming the above problem or at least being partially solved the above problem
In uplink service requesting method and device.
According to an aspect of the present invention, the uplink service requesting method in a kind of multi-sub-band system is provided, comprising:
S1, uplink service request signal is obtained；
S2, the uplink service request signal, in the non-resident area of the multi-sub-band system, collocating uplink business are based on
Request channel；
S3, channel is requested based on the uplink service, completes uplink service request.
Wherein, step S1 includes:
S11, it is based on preset parameter, obtains the uplink service request signal basic sequence；
S12, the cycle offset based on the uplink service request signal basic sequence determine the uplink service request letter
Number.
Wherein, step S11 includes:
Based on the preset parameter, ZC sequence is generated；
Discrete Fourier transform is carried out to the ZC sequence, obtains the frequency-region signal sequence of the ZC sequence；
The zero padding in the frequency-region signal sequence of the ZC sequence, until sequence length reaches preset value；
Inverse discrete Fourier transform and cyclic shift are carried out to the sequence after zero padding, obtain the uplink service request signal
Basic sequence.
Wherein, step S2 includes:
S21, in the non-resident area of the multi-sub-band system, determine that the uplink pilot time slot physics of wherein n subband is believed
Road position, wherein n is preset positive integer；
S22, it is based on the uplink service request signal, in the uplink pilot time slot physical channel position of the n subband
On, n uplink service request channel is respectively configured.
Wherein, step S21 includes:
In the non-resident area of the multi-sub-band system, the first subband and the second subband are selected, as the uplink service
Request the allocation position of channel.
Wherein, step S22 includes:
For the allocation position of everywhere uplink service request channel, the uplink service request signal basic sequence is obtained,
On uplink pilot time slot physical channel position, the lead code of cyclic shift generation；
In the lead code, the uplink service request channel is configured.
Wherein, when the lead code that the cyclic shift generates is multiple, it is based on the uplink service request signal, is determined
1 lead code therein, and the uplink service request channel is configured in 1 lead code.
Wherein, step S3 includes:
When the n uplink service requests one user of channel configuration, select on first subband corresponding first
Row service request channel completes uplink service request.
Wherein, step S3 further include:
When the n uplink service requests n user of channel configuration, the n uplink service request channel and the n
A user corresponds.
The another aspect provided according to the present invention, the present invention also provides the uplink service requests in a kind of multi-sub-band system
Device, comprising:
Module is obtained, for obtaining uplink service request signal；
Configuration module, for being matched in the non-resident area of the multi-sub-band system based on the uplink service request signal
Set uplink service request channel；
Service request module completes uplink service request for requesting channel based on the uplink service.
Uplink service requesting method and device in a kind of multi-sub-band system proposed by the present invention, by multi-sub-band system
Non-resident area in, collocating uplink service request channel when so that user being scheduled for workspace, is still able to carry out business and asks
It asks.
Detailed description of the invention
Fig. 1 is the SR channel architecture figure of multi-subband communication system in the prior art；
Fig. 2 is the uplink service requesting method flow chart in a kind of multi-sub-band system provided in an embodiment of the present invention；
Fig. 3 is the uplink service request unit structure chart in a kind of multi-sub-band system provided in an embodiment of the present invention.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiments of the present invention will be described in further detail.Implement below
Example is not intended to limit the scope of the invention for illustrating the present invention.
Fig. 2 is the uplink service requesting method flow chart in a kind of multi-sub-band system provided in an embodiment of the present invention, such as Fig. 2
It is shown, comprising:
S1, uplink service request signal is obtained；
S2, the uplink service request signal, in the non-resident area of the multi-sub-band system, collocating uplink business are based on
Request channel；
S3, channel is requested based on the uplink service, completes uplink service request.
In the prior art, in multi-subband communication system, user is only capable of in resident area by being resident in the service sub-band in area
SR channel, finishing service request, if but user when being scheduled for the non-resident area of the multi-sub-band system, due to non-resident
Area does not have SR channel can for users to use, then when there is uplink service arrival, and user is in non-resident area and will be unable to carry out industry
Business request.
In view of the above-mentioned problems of the prior art, the embodiment of the present invention is by the non-resident area of multi-sub-band system,
Collocating uplink service request channel carries out service request so that user also can request channel by uplink service in non-resident area.
Specifically, the uplink service request signal is SR request signal, the SR request signal is according to the present invention
Embodiment sets signal certainly, requests channel position according to the uplink service of required configuration, and the different ginsengs in SR request signal are arranged
Numerical value, so that the corresponding correct position of selection is configured in the non-resident area of multi-sub-band system.
It is understood that the uplink service request in S3 is completed by way of search space, each uplink
Service request channel corresponds to a search space, and the uplink and downlink resource of user is dispatched in described search space.
The embodiment of the present invention is by the non-resident area of multi-sub-band system, collocating uplink service request channel, so that with
When family is scheduled for workspace, it is still able to carry out service request.
On the basis of the above embodiments, step S1 includes:
S11, it is based on preset parameter, obtains the uplink service request signal basic sequence；
S12, the cycle offset based on the uplink service request signal basic sequence determine the uplink service request letter
Number.
In S11, the preset parameter is the uplink service request signal sequence that the embodiment of the present invention obtains as needed
The value freely set up is arranged, the embodiment of the present invention does not do numerical definiteness to this.
Wherein, step S11 includes:
Based on the preset parameter, ZC sequence is generated；
Discrete Fourier transform is carried out to the ZC sequence, obtains the frequency-region signal sequence of the ZC sequence；
The zero padding in the frequency-region signal sequence of the ZC sequence, until sequence length reaches preset value；
Inverse discrete Fourier transform and cyclic shift are carried out to the sequence after zero padding, obtain the uplink service request signal
Basic sequence.
Specifically, generating ZC sequence using root parameter u first:
Wherein, u is from the root parameter set；
Then discrete Fourier transform is carried out to the ZC sequence, obtains the frequency-region signal sequence of the ZC sequence:
The zero padding in the frequency-region signal sequence of the ZC sequence, until sequence length reaches preset value:
X=[Xu((Nzc-1)/2) ..., Xu(Nzc-1), 0,0 ..., 0, Xu(0), Xu(1) ... Xu((Nzc-1)/2-1)],
Wherein, NSEQPoints are the preset value of sequence length；
Inverse discrete Fourier transform and cyclic shift finally are carried out to the sequence after zero padding, obtain the uplink service request
Signal basic sequence:
su(n)=circshift (ifft (X (k)), Ncp)/(NZC/NSEQ)。
On the basis of the above embodiments, step S2 includes:
S21, in the non-resident area of the multi-sub-band system, determine that the uplink pilot time slot physics of wherein n subband is believed
Road position, wherein n is preset positive integer；
S22, it is based on the uplink service request signal, in the uplink pilot time slot physical channel position of the n subband
On, n uplink service request channel is respectively configured.
In S21, uplink pilot time slot physical channel position is UpPTS, and the UpPTS is that exclusive uplink information passes
The slotted physical channel of defeated process configuration, it is to be understood that the configuration of uplink service request channel at n is selected on UpPTS
Position, can be compatible with the channel slot structure of current system, will not impact to current communication networks.
In S22, it is to be understood that since there are the allocation position of uplink service request channel at n, then everywhere uplinks
The configurable uplink service of the configuration of service request channel requests channel.
The embodiment of the present invention is by carrying out uplink service on the uplink pilot time slot physical channel position of multi-sub-band system
The configuration of channel is requested, so that upstream service is more stable, and the uplink service configured requests channel, can be with current system
Channel slot structure it is compatible, current communication networks will not be impacted.
On the basis of the above embodiments, step S21 includes:
In the non-resident area of the multi-sub-band system, the first subband and the second subband are selected, as the uplink service
Request the allocation position of channel.
It is understood that in the non-resident area of the multi-sub-band system, can optional n subband therein uplink
Allocation position of the pilot time slot physical channel position as uplink service request channel at n, if but selecting the position of subband rearward
The service request performance of user will be will affect by setting.
Preferably, by the first subband and the second subband in the non-resident area of the multi-sub-band system, as the uplink
The allocation position of service request channel.
On the basis of the above embodiments, step S22 includes:
For the allocation position of everywhere uplink service request channel, the uplink service request signal basic sequence is obtained,
On uplink pilot time slot physical channel position, the lead code of cyclic shift generation；
In the lead code, the uplink service request channel is configured.
It is understood that may will receive multiple for a subband in the non-resident area of multi-sub-band system
The influence of cell needs to divide cell, generally in order to enable each cell, which can be assigned to 1 UpPTS, sends SR
, cell is divided by the way of code point and time-division.
Wherein, the mode of code point is to be believed according to the uplink service request signal basic sequence in uplink pilot time slot physics
On road position, what the lead code that cyclic shift generates was divided.
Specifically, calculating cycle offset are as follows:
SU, v(n)=Su(mod(n-Cv, Nseq)), n=[0:NSEQ+ NCp-1],
Wherein,
Wherein, the value of v determines the leading number of codes generated according to cyclic shift, for example, when producing 8 lead codes
When, the value range of v is that 0-7 is configured in first lead code when v takes 0, leading at the last one when v takes 7
It is configured in code.
The value of the case where for the time-division, v will be independently arranged according to the division region of time-division, the embodiment of the present invention to this not
It repeats again.
On the basis of the above embodiments, when the lead code that the cyclic shift generates is multiple, it is based on the uplink
Service request signal determines 1 lead code therein, and the uplink service request channel is configured in 1 lead code.
Since the quantity of lead code can not be 1, but the lead code configured is unique, so will request to believe according to uplink service
For the configuration of lead code in number, determination is to be completed to configure the uplink service request channel by which 1 lead code therein.
On the basis of the above embodiments, step S3 includes:
When the n uplink service requests one user of channel configuration, select on first subband corresponding first
Row service request channel completes uplink service request.
It is understood that corresponding first search space of the first uplink service request channel, the second uplink service are asked
The second search space of channel correspondence is asked, if carrying out the upper and lower of a user using the first search space and the second search space simultaneously
Row scheduling of resource then only uses the first search space and carries out SR request, can effectively utilize resource in this way, not will cause
The waste of resource.
Preferably, by the position UpPTS of the first subband and the second subband in the non-resident area of multi-sub-band system, as upper
The allocation position of row service request channel, then the SR of corresponding first search space the first subband SR, the second subband SR correspond to second
The SR of search space, when the SR of the first search space and SR of the second search space dispatches the uplink and downlink money of the same user simultaneously
When source, terminal carries out uplink SR request using the position UpPTS of first subband, it is to be understood that the first subband is here
Forward subband.
On the basis of the above embodiments, step S3 further include:
When the n uplink service requests n user of channel configuration, the n uplink service request channel and the n
A user corresponds.
It is understood that when there is n user to need to request using SR, the first search space of corresponding distribution
The SR of SR and the second search space complete the uplink service request of the first user and second user.
Service request method provided in an embodiment of the present invention is requested channel by configuring n uplink service, is realized more
When multi-user in sub-band system dispatches simultaneously, service request can be carried out.
Fig. 3 is the uplink service request unit structure chart in a kind of multi-sub-band system provided in an embodiment of the present invention, comprising:
Obtain module 1, configuration module 2 and service request module 3, wherein
Module 1 is obtained for obtaining uplink service request signal；
Configuration module 2 is used to match in the non-resident area of the multi-sub-band system based on the uplink service request signal
Set uplink service request channel；
Service request module 3 is used to request channel based on the uplink service, completes uplink service request.
Specifically, obtaining module 1 obtains the uplink service request signal, the uplink service request signal is that SR is asked
Seek signal, the SR request signal is according to an embodiment of the present invention from setting signal, and configuration module 2 is according to the uplink of required configuration
The different parameters value in SR request signal is arranged in service request channel position, thus in the non-resident area of multi-sub-band system, choosing
Corresponding correct position is selected to be configured.The uplink service request of service request module 3 is completed by way of search space
, each uplink service requests the corresponding search space of channel, and the uplink and downlink of user are dispatched in described search space
Resource.
Uplink service request unit in multi-sub-band system provided in an embodiment of the present invention, to the non-resident area of multi-sub-band system
SR channel configured, when so that user being scheduled for workspace, be still able to carry out service request.
Finally, the present processes are only preferable embodiment, it is not intended to limit the scope of the present invention.It is all
Within the spirit and principles in the present invention, any modification, equivalent replacement, improvement and so on should be included in protection of the invention
Within the scope of.
Claims (10)
1. the uplink service requesting method in a kind of multi-sub-band system characterized by comprising
S1, uplink service request signal is obtained；
S2, the uplink service request signal, in the non-resident area of the multi-sub-band system, collocating uplink service request are based on
Channel；
S3, channel is requested based on the uplink service, completes uplink service request.
2. the method according to claim 1, wherein step S1 includes:
S11, it is based on preset parameter, obtains the uplink service request signal basic sequence；
S12, the cycle offset based on the uplink service request signal basic sequence, determine the uplink service request signal.
3. according to the method described in claim 2, it is characterized in that, step S11 includes:
Based on the preset parameter, ZC sequence is generated；
Discrete Fourier transform is carried out to the ZC sequence, obtains the frequency-region signal sequence of the ZC sequence；
The zero padding in the frequency-region signal sequence of the ZC sequence, until sequence length reaches preset value；
Inverse discrete Fourier transform and cyclic shift are carried out to the sequence after zero padding, obtain the uplink service request signal motif
Column.
4. according to the method described in claim 2, it is characterized in that, step S2 includes:
S21, in the non-resident area of the multi-sub-band system, determine the uplink pilot time slot physical channel position of wherein n subband
It sets, wherein n is preset positive integer；
S22, it is based on the uplink service request signal, on the uplink pilot time slot physical channel position of the n subband, point
It Pei Zhi not n service request request channel.
5. according to the method described in claim 4, it is characterized in that, step S21 includes:
In the non-resident area of the multi-sub-band system, the logic index based on subband selects the first subband to the n-th subband, makees
The allocation position of channel is requested for the uplink service.
6. according to the method described in claim 4, it is characterized in that, step S22 includes:
For the allocation position of everywhere uplink service request channel, the uplink service request signal basic sequence is obtained, upper
On row pilot time slot physical channel position, the lead code of cyclic shift generation；
In the lead code, the uplink service request channel is configured.
7. according to the method described in claim 6, it is characterized in that, when the cyclic shift generate lead code be it is multiple when,
Based on the uplink service request signal, 1 lead code therein is determined, and configure the uplink in 1 lead code
Service request channel.
8. according to the method described in claim 5, it is characterized in that, step S3 includes:
When the n uplink service requests one user of channel configuration, industry on first subband corresponding first is selected
Business request channel completes uplink service request.
9. according to the method described in claim 4, it is characterized in that, step S3 further include:
When the n uplink service requests n user of channel configuration, the n uplink service request channel and described n use
Family corresponds.
10. the uplink service request unit in a kind of multi-sub-band system characterized by comprising
Module is obtained, for obtaining uplink service request signal；
Configuration module, for being based on the uplink service request signal, in the non-resident area of the multi-sub-band system, in configuration
Row service request channel；
Service request module completes uplink service request for requesting channel based on the uplink service.
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| CN201710582690.XA CN109275189A (en) | 2017-07-17 | 2017-07-17 | Uplink service requesting method and device in a kind of multi-sub-band system |
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| CN201710582690.XA CN109275189A (en) | 2017-07-17 | 2017-07-17 | Uplink service requesting method and device in a kind of multi-sub-band system |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102790972A (en) * | 2011-05-18 | 2012-11-21 | 普天信息技术研究院有限公司 | Method and device for generating aerial signal of resource request channel based on ZC sequence |
| CN103327613A (en) * | 2012-03-18 | 2013-09-25 | 上海贝尔股份有限公司 | Method for transmitting scheduling request in wireless communication network |
| CN106375075A (en) * | 2015-07-21 | 2017-02-01 | 普天信息技术有限公司 | Sharing frequency range uplink multi-suband resource distribution method and base station |
-
2017
- 2017-07-17 CN CN201710582690.XA patent/CN109275189A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102790972A (en) * | 2011-05-18 | 2012-11-21 | 普天信息技术研究院有限公司 | Method and device for generating aerial signal of resource request channel based on ZC sequence |
| CN103327613A (en) * | 2012-03-18 | 2013-09-25 | 上海贝尔股份有限公司 | Method for transmitting scheduling request in wireless communication network |
| CN106375075A (en) * | 2015-07-21 | 2017-02-01 | 普天信息技术有限公司 | Sharing frequency range uplink multi-suband resource distribution method and base station |
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Application publication date: 20190125 |