CN103906240B - A kind of time-derived channel distribution method and system - Google Patents
A kind of time-derived channel distribution method and system Download PDFInfo
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- CN103906240B CN103906240B CN201210574502.6A CN201210574502A CN103906240B CN 103906240 B CN103906240 B CN 103906240B CN 201210574502 A CN201210574502 A CN 201210574502A CN 103906240 B CN103906240 B CN 103906240B
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Abstract
The present invention provides a kind of time-derived channel distribution method and system.Methods described includes：Channel in cell is divided into CSCHGROUP and PSCHGROUP；To the channel in CSCHGROUP, according to the ascending queuing of IDLE channel uplink disturbed test results；To the channel in PSCHGROUP, CHANNELSET is set；IDLE channel uplink disturbed tests are carried out, calculate the average value of uplink interference value in each CHANNELSET；Further according to the ascending queuing CHANNELSET of average value；When having business demand, channel is distributed since the head of the queue of channel queue.Compared with prior art, the present invention takes into full account the continuous transmission power pattern of data service and the feature of descending inactivity control, reduces in the system of communication network and disturbs, can lift voice quality, improves the speech service quality experience of user.
Description
Technical field
Mobile communication network technology field of the present invention, more particularly to a kind of time-derived channel distribution method and system.
Background technology
In mobile radio communication, existing channel allocation algorithm is according to channel quality --- with up idle channel Idle state
IDLE interference measurement results are defined, and are ranked according to interference value ascending (1- ＞ 2- ＞ 3- ＞ 4- ＞ 5), distribute channel
When, it is small for interference value in CS (Circuit Switched, circuit switching) business prioritizing selection queue, and there is no data industry
Channel on the carrier frequency of business；For PS (Packet switched, packet switch) business, preferential distribute in channel queue is disturbed
It is worth small and is the channel on carrier frequency that those have had PS business.Specifically distribute as shown in figure 1, there it can be seen that right
In CS domains and the business of ps domain, channel is distributed according only to the difference of carrier frequency, in figure, f0 each on tri- carrier frequency of f1/f2 when
Gap is all assigned as speech business or corresponding control business, and the time slot on f3 carrier frequency is all assigned as data service.
Above-mentioned traffic assignments mode, it is separation on frequency domain from CS domains from the point of view of the angle of single subdistrict and ps domain business,
It is what is mixed in time domain.But from the point of view of whole communication system, CS domains business and ps domain business, whether frequency domain
Or time domain all mixes.
Due to the explosive growth of the fast development of radio communication service, particularly wireless data service, existing frequency money
Source can not support this quick and sustainable growth business, and frequency reuse distance is less and less, the same of minizone, adjacent frequency interference
It is increasingly severe.And because data service is relative to two outstanding features of speech business：First, in a TBF
It is continuous power hair all the time no matter either with or without data traffic in (Temporary Block Flow, Temporary Block Flow) time-continuing process
Penetrate.So, wireless device has not only done many idle works, while adds the interference in system, and because CS domains business and
Ps domain business, is all mixed over the frequency domain.Which results in voice quality as data service is sent out at a high speed
Open up and decline continuously and healthily.Concrete principle is as shown in Fig. 2 wherein, in a TBF, (Logical Link Control, are patrolled LLC
The control of volume link) layer protocol data and RLC (Radio Link Control, wireless spread-spectrum technology) layer protocol data it is continuous
Transmitting, is interfered.In addition, existing each communication equipment is when realizing data service, Power Control work(in the downstream direction
Also untapped imperfection can be come out or gone back, so data service produces interference to speech business (particularly down direction), cause
Voice quality continuous decrease.
In existing communication network, speech business has PC- Power Controls (PC Power control, Power Control), upper,
Down direction has all been realized and very ripe.In addition, DTX- discontinuous transmittings function (DTX Discontinuous
Transmission, discontinuous transmission) also all realize in uplink and downlink direction and very ripe.So data service and
Interference relationships between speech business are that interference of the data service to speech business is more than interference of the speech business to data service,
It is specific as shown in Figure 3.Therein, it can be seen that the data service on each carrier frequency in each non-slotted channel is to speech business
Disturb larger, and speech business is smaller for the interference of data service.
To sum up, channel allocation algorithm of the prior art, the technology in voice epoch is simply followed, not for data industry
Business optimize accordingly and improve, and does not account for the spy of the continuous transmission power pattern of data service and the control of descending inactivity
Sign, brings in extremely strong system to network and disturbs, and the tremendous influence to caused by voice quality.Due to for data service simultaneously
There is no appropriate power control mechanism, cause data service to the interference of speech business than more serious, cause whole communication system
Professional ability of uniting declines, and seriously affects Consumer's Experience.
The content of the invention
The shortcomings that it is an object of the invention to overcome prior art and deficiency, there is provided a kind of time-derived channel distribution method and be
System.
A kind of time-derived channel distribution method, methods described include：
Channel in cell is divided into circuit commutative field channel group CSCHGROUP and packet-switched domain channel group by time slot
PSCHGROUP；
To the channel in the CSCHGROUP channel groups, according to Idle state IDLE channel uplink disturbed test results, by small
It is lined up to big；
To the channel in the PSCHGROUP channel groups, 4 continuous channels on same carrier frequency are set as a channel set
CHANNELSET；IDLE channel uplink disturbed tests are carried out to each channel, and calculated each in each CHANNELSET
The average value of channel uplink interference value；Further according to the ascending queuing CHANNELSET of the average value；
When there is business demand, channel is distributed since the head of the queue of channel queue.
On the other hand, the invention also discloses a kind of time-derived channel distribution system, the system to include grouped element, first
Sequencing unit, the second sequencing unit and channel-assignment unit, wherein,
The grouped element, for by the channel in cell by time slot be divided into circuit commutative field channel group CSCHGROUP with
Packet-switched domain channel group PSCHGROUP；
First sequencing unit, for the channel in the CSCHGROUP channel groups, according to Idle state IDLE channels
Uplink interference test result, ascending queuing；
Second sequencing unit, for the channel in the PSCHGROUP channel groups, setting 4 on same carrier frequency
Individual continuous channel is a channel set CHANNELSET；IDLE channel uplink disturbed tests are carried out to each channel, and counted
Calculate the average value of each channel uplink interference value in each CHANNELSET；Further according to the ascending queuing of the average value
CHANNELSET；
The channel-assignment unit, for when there is business demand, channel to be distributed since the head of the queue of channel queue.
The present invention is by redistributing time-derived channel, interference of the isolated data business to speech business, with prior art phase
Than having carried out corresponding optimization and improvement for data service, having taken into full account the continuous transmission power pattern of data service with
The feature of row inactivity control, reduces in the system of communication network and disturbs, can lift voice quality, improve the voice of user
Quality of service is experienced.
Brief description of the drawings
Fig. 1 is channel configuration, distribution principle figure in cell in the prior art；
Fig. 2 is TBF principle schematic diagrams in the prior art；
Fig. 3 disturbs schematic diagram for data service in the prior art and speech business；
Fig. 4 is the time-derived channel distribution method principle flow chart that the embodiment of the present invention 1 provides；
Fig. 5 is air interface synchronization principle schematic；
Fig. 6 is data service and speech business interference schematic diagram after the time-derived channel distribution that the embodiment of the present invention 1 provides；
Fig. 7 is that two channel groups of CSCHGROUP and PSCHGROUP are lined up schematic diagram；
Fig. 8 is the time-derived channel distribution system configuration schematic diagram that the embodiment of the present invention 2 provides.
Embodiment
The embodiment of the present invention is described in detail below in conjunction with the accompanying drawings.But embodiments of the present invention are unlimited
In this.
The inventive method embodiment principle is by being redistributed to time-derived channel, from time upper isolated data business
And speech business, so as to avoid interfering with each other for data service and speech business.Focus on：First, time division synchronous distributes plan
Slightly, different non-slotted channels is distributed for different business (speech business and data service), so in time domain two kinds
Different business is kept completely separate and (needs to open air interface synchronization function), while the interference between two kinds of business is also kept apart.
Second, newly-increased ps domain channel queue PSCHGROUP (Packet switched channel GROUP, packet-switched domain channel
Group), and be the new algorithm that unit is ranked, distributed with CHANNELSET (channel set).
For convenience of understanding to technical solution of the present invention, below with technical solution of the present invention mobile communications network frequency division+
Exemplified by reduction interference under the application environment of time-division between data service and speech business is realized, the technology of the present invention side is illustrated
The implementation of case.However, the application environment of interference is reduced between data service and speech business not in mobile communications network
The restrictive condition that the present invention realizes is formed, realization of the invention is not necessarily confined to a certain specific application environment, in fact,
In the application that all presence time-division slots disturb, technical scheme can effectively reduce the various industry of each time slot
Interference between business, therefore the present invention is not intended to targeted concrete application environment when being realized to technical scheme and limited.
As shown in figure 4, the time-derived channel distribution method principle flow chart provided for the embodiment of the present invention 1, specific as follows：
Step 10, the channel in cell is divided into circuit commutative field channel group CSCHGROUP (Circuit by time slot
Switched channel GROUP, circuit commutative field channel group) and packet-switched domain channel group PSCHGROUP.
The embodiment of the present invention is based on air interface synchronization network, and so-called air interface synchronization network refers to intra BSC (bases
Station control) or inter BSC different BTS (base station transmitter) between, on Um-- eats dishes without rice or wine since start frame FRAME0
Synchronization on retention time, realizing the mode of air interface synchronization at present has three kinds：Hard synchronous, soft synchronous, hard synchronization+soft synchronization.It is empty
The synchronous net principle of mouth is as shown in Figure 5.Wherein, it is seen that different BTS is under different synchronous regimes, and the initial time of each frame is not
Together.
The first step of the embodiment of the present invention, it is exactly first to divide all new arrive on each base station in each cell according to time slot
For circuit commutative field channel group CSCHGROUP and packet-switched domain channel group PSCHGROUP.Here CSCHGROUP and
PSCHGROUP is mutually misaligned in time domain, that is to say, that when CSCHGROUP and PSCHGROUP specifically transmits data,
It is misaligned on time.Interfering with each other between business can so be avoided.
Specifically, can be that CSCHGROUP distributes the TS0 TS1 TS2 TS7 time slots on all frequencies in cell.For
TS3 in PSCHGROUP distribution cells on all frequencies TS4 TS5 TS6 time slots, not only ensure that PDCH (Packet Data
CHannel, Packet Data Channel) successional needs in time, while also meet that 4 time slots of user equipment downlink are maximum to be needed
Ask.So the whole network PDCH and TCH (Traffic channel, Traffic Channel) uses respective four time slots, so in the time
What upper PS business and CS business were entirely isolated in time, therefore eliminate the need for interfering between PDCH and TCH.Because
TS7 and TS0 is continuous in time, during to avoid TS7 from using 8PSK modulation mode, MS decoding BSIC is influenceed, so TS7 should
It is assigned as TCH.
Particularly, the classification for each channel time slot here, not including BCCH (Broadcast Control
Channel, BCCH), CCCH (common control channel, CCCH) and SDCCH (Stand-
Alone Dedicated Control Channel, Separate Dedicated Control Channel).Because these are all control channels, it is impossible to are made
The division of channel group is carried out for Traffic Channel.
Step 20, to the channel in CSCHGROUP channel groups, according to Idle state IDLE channel uplink disturbed test results,
Ascending queuing.
What step 20 here and step 30 were actually synchronously carried out, CSCHGROUP and PSCHGROUP is carried out respectively
Sequence is handled.For the channel in CSCHGROUP channel groups, it is ranked up according to existing sort method, that is, need root
According to IDLE channel uplink disturbed test results, the ascending channel line up one after another of result will be disturbed.
Step 30, to the channel in PSCHGROUP channel groups, 4 continuous channels on same carrier frequency are set as a letter
Trace gather CHANNELSET；IDLE channel uplink disturbed tests are carried out to each channel, and calculated each in each CHANNELSET
The average value of channel uplink interference value；Further according to the ascending queuing CHANNELSET of average value.
For the channel in PSCHGROUP channel groups, equally it is also required to first to carry out each channel IDLE channel uplinks to do
Test is disturbed, 4 continuous channels then defined on same carrier frequency are a CHANNELSET, are calculated in each CHANNELSET
The average value of each channel uplink interference value, further according to each CHANNELSET ascending queuing of uplink interference average value
CHANNELSET.Then it is worth ascending queuing according to uplink interference for each channel in CHANNELSET inside.
Step 40, when there is business demand, channel is distributed since the head of the queue of channel queue.
According to above step, each channel has been ready for sequence, at this moment, when having business demand, according to
The type of business demand, according to the sequence of channel queue, distribute channel one by one since head of the queue.
Further, in order to ensure the whole network service quality of voice communication, set when the channel load in CSCHGROUP exceedes
, it is necessary to start half-rate channel when determining thresholding but having not occurred congestion.Here thresholding can be set as needed.
Above-mentioned time division synchronous method for channel allocation, it is exactly on the basis of air interface synchronization net, according to different business (languages
Sound business and data service) the different time slot of distribution, i.e., when there is data traffic requirement to enter system, distribute TS3, TS4, TS5,
TS6 is PDCH, not only ensure that the successional needs of PDCH in time, while also meets 4 time slots of user equipment downlink most
Big demand；TS0, TS1, TS2, TS7 TCH are distributed when there is speech business demand to enter system, such the whole network PDCH and TCH is
Using respective four time slots, so PS business and CS business are entirely isolated in time in time, therefore just eliminate
Interfering between PDCH and TCH.The interference relationships and interference separation principle of time division synchronous channel distribution are as shown in Figure 6.
It can be seen that by redistributing channel, the interference of data service and speech business between each carrier frequency substantially reduces.
As shown in fig. 7, being the schematic diagram that above-mentioned two channel groups are lined up, the channel in wherein CSCHGROUP is still pressed
Carry out business transmission is lined up according to existing mode, and the channel in PSCHGROUP channel groups is divided into multiple CHANNELSET, so
Traffic assignments are carried out according to CHANNELSET sequence afterwards.
As shown in figure 8, the time-derived channel distribution system configuration schematic diagram provided for the embodiment of the present invention 2, the system include
Grouped element 100, the first sequencing unit 200, the second sequencing unit 300 and channel-assignment unit 400, wherein,
Grouped element 100, for the channel in cell to be divided into circuit commutative field channel group CSCHGROUP with dividing by time slot
Group switching domain channel group PSCHGROUP.
First sequencing unit 200, for the channel in CSCHGROUP channel groups, according to Idle state IDLE channel uplinks
Disturbed test result, ascending queuing.
Second sequencing unit 300, for the channel in PSCHGROUP channel groups, 4 set on same carrier frequency to be continuous
Channel is a channel set CHANNELSET；IDLE channel uplink disturbed tests are carried out to each channel, and are calculated each
The average value of each channel uplink interference value in CHANNELSET；Further according to the ascending queuing CHANNELSET of average value.
Channel-assignment unit 400, for when there is business demand, channel to be distributed since the head of the queue of channel queue.
Further, the system also includes congestion control unit 500, for being set when the channel load in CSCHGROUP exceedes
When determining thresholding but having not occurred congestion, start half-rate channel.
In summary, method for channel allocation of the prior art, the technology in voice epoch is simply followed, not for number
According to business accordingly optimize and improve, do not account for the continuous transmission power pattern of data service and the control of descending inactivity
Feature, bring in extremely strong system and disturb to network, and the tremendous influence to caused by voice quality.The each implementation of the present invention
The scheme that example provides, innovatively proposes very efficient solution：By way of time division synchronous distributes channel, solve
The fast development of data service interference to caused by speech business, for the lifting of voice quality provides strong guarantee.
Above-described embodiment is the preferable embodiment of the present invention, but embodiments of the present invention are not by above-described embodiment
Limitation, other any Spirit Essences without departing from the present invention with made under principle change, modification, replacement, combine, simplification,
Equivalent substitute mode is should be, is included within protection scope of the present invention.
Claims (7)
1. a kind of time-derived channel distribution method, it is characterised in that methods described includes：
Channel in cell is divided into circuit commutative field channel group CSCHGROUP and packet-switched domain channel group by time slot
PSCHGROUP, wherein, the CSCHGROUP and the PSCHGROUP are mutually misaligned in time domain；
It is ascending according to Idle state IDLE channel uplink disturbed test results to the channel in the CSCHGROUP channel groups
It is lined up；
To the channel in the PSCHGROUP channel groups, 4 continuous channels on same carrier frequency are set as a channel set
CHANNELSET；IDLE channel uplink disturbed tests are carried out to each channel, and calculated each in each CHANNELSET
The average value of channel uplink interference value；Further according to the ascending queuing CHANNELSET of the average value；
When there is business demand, channel is distributed since the head of the queue of channel queue.
2. the method as described in claim 1, it is characterised in that the CSCHGROUP is included in cell on all frequencies
TS0 TS1 TS2 TS7 time slots；The PSCHGROUP include TS3 in cell on all frequencies TS4 TS5 TS6 time slots.
3. the method as described in claim 1, it is characterised in that the CSCHGROUP does not include BCCH channel of broadcast control, public affairs
Control channel CCCH and Separate Dedicated Control Channel SDCCH altogether.
4. the method as described in claim 1, it is characterised in that methods described also includes：
When the channel load in the CSCHGROUP exceedes setting thresholding but has not occurred congestion, start half-rate channel.
5. the method as described in claim 1, it is characterised in that the CHANNELSET internal channels are according to the uplink interference
It is worth ascending queuing.
6. a kind of time-derived channel distribution system, it is characterised in that the system includes grouped element, the first sequencing unit, second
Sequencing unit and channel-assignment unit, wherein,
The grouped element, for the channel in cell to be divided into circuit commutative field channel group CSCHGROUP and packet by time slot
Switching domain channel group PSCHGROUP, wherein, the CSCHGROUP and the PSCHGROUP are mutually misaligned in time domain；
First sequencing unit, for the channel in the CSCHGROUP channel groups, according to Idle state IDLE channel uplinks
Disturbed test result, ascending queuing；
Second sequencing unit, for the channel in the PSCHGROUP channel groups, setting 4 companies on same carrier frequency
Continuous channel is a channel set CHANNELSET；IDLE channel uplink disturbed tests are carried out to each channel, and calculated every
The average value of each channel uplink interference value in individual CHANNELSET；Further according to the ascending queuing of the average value
CHANNELSET；
The channel-assignment unit, for when there is business demand, channel to be distributed since the head of the queue of channel queue.
7. system as claimed in claim 6, it is characterised in that the system also includes congestion control unit, for when described
When channel load in CSCHGROUP exceedes setting thresholding but has not occurred congestion, start half-rate channel.
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| CN105246165B (en) * | 2015-11-12 | 2018-12-14 | 北京邮电大学 | A kind of signal transmitting power division method and device |
| CN113438677B (en) * | 2021-06-24 | 2022-09-27 | 中国联合网络通信集团有限公司 | Interference processing method, device and equipment |
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|---|---|---|---|---|
| CN1464756A (en) * | 2002-06-28 | 2003-12-31 | 上海贝尔有限公司 | Dynamic allocation method for communication channel in time-division duplex communication system |
| CN101674604A (en) * | 2008-09-12 | 2010-03-17 | 华为技术有限公司 | Method for transmitting circuit switched domain service, network equipment and terminal equipment |
| CN102076091A (en) * | 2010-02-10 | 2011-05-25 | 华为技术有限公司 | Distribution method, apparatus for signal path assignment and base station control equipment of signal path |
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| US7852796B2 (en) * | 2002-05-13 | 2010-12-14 | Xudong Wang | Distributed multichannel wireless communication |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1464756A (en) * | 2002-06-28 | 2003-12-31 | 上海贝尔有限公司 | Dynamic allocation method for communication channel in time-division duplex communication system |
| CN101674604A (en) * | 2008-09-12 | 2010-03-17 | 华为技术有限公司 | Method for transmitting circuit switched domain service, network equipment and terminal equipment |
| CN102076091A (en) * | 2010-02-10 | 2011-05-25 | 华为技术有限公司 | Distribution method, apparatus for signal path assignment and base station control equipment of signal path |
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