CN103687025B - Resource allocation method used for LTE system - Google Patents
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Abstract
The invention relates to a resource allocation method used for an LTE system. According to the channel environment where terminals are located, physical resources are allocated for terminal users in combination with service Qos requirements and service amount requirements. The resource allocation method includes the steps that a network side refers to the terminal service Qos requirements and uplink data size requirements to allocate SR resources for the terminal users; the network side refers to the channel environment where the terminals are located, the uplink data size requirements and downlink data size requirements to allocate CQI resources for the terminal users; the network side refers to the channel environment where the terminals are located, the uplink data size requirements and whether to adopt a frequency-selective scheduling strategy to allocate SRS resources for the terminal users. The corresponding physical resources are allocated according to terminal actual service requirements and the channel environment, and the use ratio of radio resources of the LTE system is improved to a greater degree.
Description
Technical field
The present invention relates to moving communicating field, a kind of method improving resource utilization particularly to lte system configuration.
Background technology
Lte (long term evolution, Long Term Evolution) is the long-term of the umts technical standard organized to set up by 3gpp
Evolution.In lte system, base station needs the information such as channel circumstance and buffer status according to residing for terminal to carry out up-downgoing scheduling.And
These information depend on the physical resource that base station is terminal use's distribution, such as sr (dispatch request), cqi (channel quality instruction) and
Srs (detection reference signal).Limited by Radio Resource, base station demodulation dispatching, the demand of Bulk Call to be met
These physical resources seem very nervous.
Sr resource includes the sr cycle, and whether anxiety depends primarily on the sr cycle to sr resource, and the situation of srs with cqi is also similar,
Depend primarily on srs cycle and cqi cycle.At present in the case of limited by hardware processing capability, can only be by way of software
Solve the problems, such as that physical resource is not enough.And prior art is mainly by way of widening the cycle when resource is nervous.
As shown in figure 1, the sr physical source distributing mode of prior art is, terminal access device, calculated according to business qos
In the sr cycle, judge whether the sr cycle inadequate resource calculating, resource abundance then distributes this sr cycle to this terminal terminate flow process,
The sr cycle is then revised as the next stage cycle by inadequate resource, then judges whether that all sr cycle resources distribute, unallocated
Complete then again apply for sr resource, be back to judge whether calculate sr cycle inadequate resource, distributed then this terminal sr resource
Distribute unsuccessfully, terminate flow process.
As shown in Fig. 2 the cqi physical source distributing mode of prior art is that terminal access device, according to channel circumstance meter
Calculate the cqi cycle, judge whether the cqi cycle inadequate resource calculating, resource abundance then distributes this cqi cycle to this terminal terminating
Flow process, the cqi cycle is then revised as the next stage cycle by inadequate resource, then judges whether that all cqi cycle resources distribute,
Unallocated complete then again apply for cqi resource, be back to the cqi cycle inadequate resource judging whether to calculate, distributed then that this is eventually
End cqi resource allocation failure, terminates flow process.
As shown in figure 3, the srs physical source distributing mode of prior art is, terminal access device, according to channel circumstance and
Scheduling strategy calculates the srs cycle, judges whether the srs cycle inadequate resource calculating, and resource abundance then distributes this srs cycle to this
Terminal simultaneously terminates flow process, and the srs cycle is then revised as the next stage cycle by inadequate resource, then judges whether that all srs cycles provide
Source distributes, unallocated complete then again apply for srs resource, be back to judge whether calculate srs cycle inadequate resource, divide
Join then this terminal srs resource allocation failure, terminate flow process.
This mode there is problems that physical resource utilization ratio not high it is impossible to accomplish by limited resource allocation give
The terminal needing uses.
Content of the invention
The technical problem to be solved in the present invention is to overcome prior art defect, improves physical resource utilization rate and reasonability,
Limited physical source distributing is given the terminal use needing most.
The technical solution adopted in the present invention is a kind of resource allocation method for lte system, according to letter that terminal is located
Road environment, in conjunction with business qos demand and traffic needs, is terminal use's distribution physical resource, implementation is as follows,
Network side reference terminal business qos demand and upstream data amount demand, are terminal use's distribution sr resource；
Channel circumstance residing for network side reference terminal and up-downgoing data volume demand, are terminal use's distribution cqi resource；
Channel circumstance residing for network side reference terminal and upstream data amount demand and whether employ frequency selection scheduling strategy,
Distribute srs resource for terminal use.
And, described network side reference terminal business qos demand and upstream data amount demand are terminal use's distribution sr money
Source, including following sub-step,
Step a1, terminal access device, the sr cycle is calculated according to business qos, judges whether that upstream data amount is big,
If upstream data amount is less, the configuration maximum level sr cycle gives this terminal, is aided with the pre-scheduling in equal cycle, stream
Journey terminates；
If upstream data amount is big, enter step a2；
Step a2, the sr cycle according to one-level less than the step a1 calculating gained sr cycle attempts distributing；
Step a3, judges whether current desired sr cycle inadequate resource, and resource abundance then distributes this sr cycle to this eventually
Hold and terminate flow process, inadequate resource then enters step a4；
Step a4, the sr cycle is revised as the next stage cycle, then judges whether that all sr cycle resources distribute,
Unallocated complete then again apply for sr resource, be back to step a3 and rejudge whether current desired sr cycle resource
Deficiency,
Distribute then this terminal sr resource allocation failure, terminate flow process.
And, channel circumstance residing for described network side reference terminal and up-downgoing data volume demand are distributed for terminal use
Cqi resource, including following sub-step,
Step b1, terminal access device, the cqi cycle is calculated according to channel circumstance, judges whether that downlink data amount is big,
If downlink data amount is less, the configuration maximum level cycle gives this terminal, and flow process terminates；
If downlink data amount is big, further determine whether that upstream data amount is big,
If upstream data amount less, does not configure cqi cycle resource but configuration cqi aperiodic is to this terminal, or configuration
The maximum level cqi cycle configures cqi aperiodic to this terminal simultaneously, and flow process terminates,
If upstream data amount is big, enter step b2；
Step b2, the cqi cycle according to one-level less than the step b1 calculating gained cqi cycle attempts distributing；
Step b3, judges whether current desired cqi cycle inadequate resource, and resource abundance then distributes this cqi cycle to this
Terminal simultaneously terminates flow process, and inadequate resource then enters step b4；
Step b4, the cqi cycle is revised as the next stage cycle, then judges whether that all cqi cycle resources distribute,
Unallocated complete then again apply for cqi resource, be back to step b3 and rejudge whether current desired cqi cycle inadequate resource；
Distribute then this terminal cqi resource allocation failure, terminate flow process.
And, channel circumstance residing for described network side reference terminal and upstream data amount demand and whether employ frequency choosing
Scheduling strategy distributes srs resource for terminal use, including following sub-step,
Step c1, terminal access device, the srs cycle is calculated according to channel circumstance and scheduling strategy, judges whether in satisfaction
Row data volume is big and non-frequency selection scheduling,
If meeting, do not configure srs cycle resource or configuration maximum level srs cycle to this terminal, flow process terminates；
If being unsatisfactory for, enter step c2；
Step c2, attempted distributing according to the step c1 calculating gained srs cycle；
Step c3, judges whether current desired srs cycle inadequate resource, and resource abundance then distributes this srs cycle to this
Terminal simultaneously terminates flow process, and inadequate resource then enters step c4；
Step c4, the srs cycle is revised as the next stage cycle, then judges whether that all srs cycle resources distribute,
Unallocated complete then again apply for srs resource, be back to step c3 and rejudge whether current desired srs cycle inadequate resource,
Distribute then this terminal srs resource allocation failure, terminate flow process.
It is an advantage of the current invention that: 1) meet customer service needs to the full extent, limited resources are distributed to and needs most
Terminal；2) improve physical resource utilization ratio, improve cell throughout and user's impression.
Brief description
Fig. 1 is the sr physical source distributing schematic diagram of prior art.
Fig. 2 is the cqi physical source distributing schematic diagram of prior art.
Fig. 3 is the srs physical source distributing schematic diagram of prior art.
Fig. 4 is the sr physical source distributing schematic diagram of the embodiment of the present invention.
Fig. 5 is the cqi physical source distributing schematic diagram of the embodiment of the present invention.
Fig. 6 is the srs physical source distributing schematic diagram of the embodiment of the present invention.
Specific embodiment
In conjunction with accompanying drawing, the embodiment of the present invention is provided to be described in detail below.
In conjunction with each physical resource purposes, according to the actual requirements collaborative configuration is carried out to each physical resource, these resources are main
For sri, cqi and srs, so that nervous resource allocation is given the user needing most, improve physical resource utilization ratio with rationally
Property.Implementation is as follows:
Network side reference terminal business qos demand and upstream data amount demand are terminal use's distribution most suitable sr money
Source；
Channel circumstance residing for network side reference terminal and up-downgoing data volume demand distribute most suitable cqi for terminal use
Resource；
Channel circumstance residing for network side reference terminal and upstream data amount demand and whether go up line frequency selection scheduling strategy and be
Terminal use distributes most suitable srs resource.
Various physical source distributing strategy detailed features are:
1) need to refer to upstream data amount demand and distribute sr resource for terminal use, in the case that upstream data amount is big,
Reduce the sr cycle, improve transmitting uplink data performance, conversely, increasing the sr cycle, being aided with the mode of pre-scheduling, reducing to pucch
The occupancy of resource；
2) by terminal feedback to base station, feedback system has periodicity and two kinds of aperiodic, week to down channel quality instruction cqi
Give the correct time on phase property cqi and there is report cycle, be i.e. the cqi cycle.Needing to refer to up-downgoing data volume demand is terminal use
Distribution cqi resource, in the case that downlink data amount and upstream data amount are all big, suitably reduce the cqi cycle, improves downlink data
Transmission performance, in the case that downlink data amount is big but upstream data amount is little, increase cqi report cycle or not configuration cycle
Cqi but reported using cqi aperiodic of moderate frequency and meet downlink data transmission demand, in the little situation of downlink data amount
Under, increase cqi report cycle and meet downlink data transmission demand；
3) need to refer to upstream data amount and upper line frequency selection scheduling strategy and distribute srs resource for terminal use, in upper line number
In the case of measuring big and non-frequency selection scheduling, have on a certain amount of pusch dmrs (uplink shared channel demodulation reference signal)
Report, to meet the up timing requirements of ta, ta represents uplink timing advance, now can not configure srs resource or increase srs week
Phase can meet up timing requirements, conversely, reducing the srs cycle, selects demand and up timing requirements to meet upper line frequency.
It is summarized as follows according to the situation of downlink data amount and upstream data amount:
1) in the case that upstream data amount is big, reduce the sr cycle, improve transmitting uplink data performance；
2) in the case that upstream data amount is little, increase the sr cycle, be aided with the mode of pre-scheduling, reduce and pucch is provided
The occupancy in source；
3) in the case that downlink data amount and upstream data amount are all big, suitably reduce the cqi cycle, improve downlink data and pass
Defeated performance；
4) in the case that downlink data amount is big but upstream data amount is little, increase cqi report cycle or not configuration cycle
Cqi is reported using cqi aperiodic of moderate frequency and meets downlink data transmission demand；
5) in the case that downlink data amount is little, increase cqi report cycle and meet downlink data transmission demand；
6) upstream data amount is big and non-frequency selection scheduling in the case of, have a certain amount of pusch dmrs and report, with full
The up timing requirements of sufficient ta, now can not configure srs resource or increase the srs cycle and can meet up timing requirements；
7) in upstream data amount less and/or in the case of line frequency selection scheduling in employing, reduce the srs cycle, on meeting
Line frequency selects demand and up timing requirements.
When investigating up-downgoing data volume demand, the judgement big or little to upstream data amount, downlink data amount, can be by ability
Threshold value set in advance is judged field technique personnel as the case may be, and the upstream data amount being greater than certain predetermined threshold value needs
Ask and belong to the big situation of upstream data amount, otherwise belong to little situation.
Each producer has typically carried out partition of the level to the cycle at present, the rank that for example the sr cycle uses have 5ms, 10ms,
20ms and 40ms, at most in the case of, this rank of 80ms can be introduced.When being embodied as, increase or reduce the cycle by adjustment
Rank can achieve.
As shown in figure 4, the sr physical source distributing mode of embodiment is,
Step a1, terminal access device, the sr cycle (calculation is identical with prior art) is calculated according to business qos, sentences
It is disconnected that whether upstream data amount is big,
If upstream data amount is less, the configuration maximum level sr cycle gives this terminal, is aided with the pre-scheduling in equal cycle (i.e.
It is terminal distribution resource in advance, so that terminal upload data), flow process terminates；
If upstream data amount is big, enter step a2.
Step a2, attempts distributing according to the sr cycle that business qos calculates gained sr cycle little one-level according to step a1.
Step a3, judges whether current desired sr cycle inadequate resource, and resource abundance then distributes this sr cycle to this eventually
Hold and terminate flow process, inadequate resource then enters step a4；During first time execution step a3, current desired sr cycle resource walks
The result of rapid a2, during subsequent execution step a3, current desired sr cycle resource is that the sr cycle is repaiied by last round of execution step a4
Again the result applied for after being changed to the next stage cycle.
Step a4, the sr cycle is revised as the next stage cycle, will epicycle execution step a3 when current desired sr cycle
It is revised as the next stage cycle, as the new current desired sr cycle；Then judge whether that all sr cycle resources distribute,
Unallocated complete then again apply for sr resource, be back to step a3 and rejudge whether current desired sr cycle inadequate resource,
Distribute then this terminal sr resource allocation failure, the sr cycle using before can be maintained, terminate flow process.
As shown in figure 5, the cqi physical source distributing mode of embodiment is,
Step b1, terminal access device, the cqi cycle (calculation is identical with prior art) is calculated according to channel circumstance,
Judge whether that downlink data amount is big,
If downlink data amount is less, the configuration maximum level cqi cycle gives this terminal, and flow process terminates；
If downlink data amount is big, further determine whether that upstream data amount is big,
If upstream data amount less, does not configure cqi cycle resource but reports this terminal using cqi aperiodic, or
The configuration maximum level cqi cycle configures cqi aperiodic to this terminal simultaneously, and flow process terminates, and can be adopted using the previous case
Cqi aperiodic of moderate frequency, using cqi aperiodic that can adopt larger frequency during a rear situation, people in the art
Member can set as needed.
If upstream data amount is greatly, enter step b2.
Step b2, is reduced the one-level cqi cycle in the cqi cycle basis that step b1 calculates and attempts distribution, under being improved with this
Row data transmission performance.
Step b3, judges whether current desired cqi cycle inadequate resource, and resource abundance then distributes this cqi cycle to this
Terminal simultaneously terminates flow process, and inadequate resource then enters step b4；During first time execution step b3, current desired cqi cycle resource
I.e. step b2 result, during subsequent execution step b3, current desired cqi cycle resource is that last round of execution step b4 is all by cqi
Phase be revised as the next stage cycle after the result again applied for.
Step b4, the cqi cycle is revised as the next stage cycle, will epicycle execution step b3 when current desired cqi week
Phase is revised as the next stage cycle, as the new current desired cqi cycle；Then judge whether that all cqi cycle resources are divided
Join,
Unallocated complete then again apply for cqi resource, be back to step b3 rejudges whether the current desired cqi cycle provides
Source is not enough,
Distribute then this terminal cqis resource allocation failure, the cqi cycle using before maintenance, terminate flow process.
As shown in fig. 6, the srs physical source distributing mode of embodiment is,
Step c1, terminal access device, the srs cycle is calculated according to channel circumstance and scheduling strategy, judges whether in satisfaction
Row data volume is big and non-frequency selection scheduling (being provided without frequency selection scheduling strategy),
If meeting, do not configure srs cycle resource or configuration maximum level srs cycle to this terminal, flow process terminates；
If being unsatisfactory for, enter step c2；
When calculating srs cycle according to channel circumstance and scheduling strategy, calculation is identical with prior art, typically permissible
For: if terminal employs upper line frequency selection scheduling, can configure the less srs cycle to improve upper line frequency selection scheduling performance, no
Then calculate the suitable srs cycle according to moving velocity of terminal and meet up timing.
Step c2, attempts distributing according to the srs cycle that channel circumstance and scheduling strategy calculate according to step c1.
Step c3, judges current desired srs cycle inadequate resource, and resource abundance then distributes this srs cycle to this terminal
And terminating flow process, inadequate resource then enters step c4；During first time execution step c3, current desired srs cycle resource walks
Rapid c2 result, during subsequent execution step c3, current desired srs cycle resource is that the srs cycle is repaiied by last round of execution step c4
Again the result applied for after being changed to the next stage cycle.
Step c4, the srs cycle is revised as the next stage cycle, will epicycle execution step c3 when current desired srs week
Phase is revised as the next stage cycle, as the new current desired srs cycle；Then judge whether that all srs cycle resources are divided
Join,
Unallocated complete then again apply for srs resource, be back to step c3 rejudges whether the current desired srs cycle provides
Source is not enough,
Distribute then this terminal srs resource allocation failure, the srs cycle using before maintenance, terminate flow process.
When being embodied as, refer to mobile management entity of the prior art and base band dispatch processor is realized.With upstream
Journey can mainly be realized by the mobile management entity of network side, and the mobile management entity of network side is mainly responsible for according to letter that terminal is located
Road environment, in conjunction with business qos demand and traffic needs, rationally distributes physical resource for terminal use.Part operation can be by base
Band dispatch processor part cooperation mobile management entity is realized, and is improved terminal traffic impression suitably to dispatch, for example, walks
By base band dispatch processor portion of secondary with pre-scheduling in rapid a1, do not configure cqi cycle resource in step b1 but adopt moderate frequency
The situation that the aperiodic of rate, cqi reported.Those skilled in the art can adopt software mode, implements the automatic running of above flow process.
The method and apparatus of the uplink data scheduling above embodiment of the present invention being provided is described in detail, herein
In apply specific case the principle of the present invention and way of example be set forth, the explanation of above example is only intended to
Help understands the method for the present invention and its core concept；Simultaneously for one of ordinary skill in the art, according to the think of of the present invention
Think, all will change in specific embodiments and applications, in sum, it is right that this specification content should not be construed as
The restriction of the present invention.
Claims (1)
1. a kind of resource allocation method for lte system it is characterised in that: according to terminal place channel circumstance, in conjunction with business
Qos demand and traffic needs, are terminal use's distribution physical resource, and implementation is as follows,
Network side reference terminal business qos demand and upstream data amount demand, are terminal use's distribution sr resource, and sr is that scheduling please
Ask；
Channel circumstance residing for network side reference terminal and up-downgoing data volume demand, are terminal use's distribution cqi resource, and cqi is
Channel quality indicates；
Channel circumstance residing for network side reference terminal and upstream data amount demand and whether employ frequency selection scheduling strategy, for end
End subscriber distributes srs resource, and srs is detection reference signal；
Described network side reference terminal business qos demand and upstream data amount demand are terminal use's distribution sr resource, including with
Lower sub-step,
Step a1, terminal access device, the sr cycle is calculated according to business qos, judges whether that upstream data amount is big,
If upstream data amount is less, the configuration maximum level sr cycle gives this terminal, is aided with the pre-scheduling in equal cycle, and flow process is tied
Bundle；
If upstream data amount is big, enter step a2；
Step a2, the sr cycle according to one-level less than the step a1 calculating gained sr cycle attempts distributing；
Step a3, judges whether current desired sr cycle inadequate resource, and resource abundance then distributes this sr cycle to this terminal simultaneously
Terminate flow process, inadequate resource then enters step a4；
Step a4, the sr cycle is revised as the next stage cycle, then judges whether that all sr cycle resources distribute, unallocated
Complete then again apply for sr resource, be back to step a3 and rejudge whether current desired sr cycle inadequate resource, distribute
Then this terminal sr resource allocation failure, terminates flow process；
Channel circumstance residing for described network side reference terminal and up-downgoing data volume demand distribute cqi resource, bag for terminal use
Include following sub-step,
Step b1, terminal access device, the cqi cycle is calculated according to channel circumstance, judges whether that downlink data amount is big,
If downlink data amount is less, the configuration maximum level cycle gives this terminal, and flow process terminates；
If downlink data amount is big, further determine whether that upstream data amount is big,
If upstream data amount less, does not configure cqi cycle resource but configuration cqi aperiodic is to this terminal, or configuration is maximum
The rank cqi cycle configures cqi aperiodic to this terminal simultaneously, and flow process terminates,
If upstream data amount is big, enter step b2；
Step b2, the cqi cycle according to one-level less than the step b1 calculating gained cqi cycle attempts distributing；
Step b3, judges whether current desired cqi cycle inadequate resource, and resource abundance then distributes this cqi cycle to this terminal
And terminating flow process, inadequate resource then enters step b4；
Step b4, the cqi cycle is revised as the next stage cycle, then judges whether that all cqi cycle resources distribute,
Unallocated complete then again apply for cqi resource, be back to step b3 and rejudge whether current desired cqi cycle resource not
Foot；
Distribute then this terminal cqi resource allocation failure, terminate flow process；
Channel circumstance residing for described network side reference terminal and upstream data amount demand and whether employ frequency selection scheduling strategy
Distribute srs resource for terminal use, including following sub-step,
Step c1, terminal access device, the srs cycle is calculated according to channel circumstance and scheduling strategy, judges whether to meet upper line number
According to measuring big and non-frequency selection scheduling,
If meeting, do not configure srs cycle resource or configuration maximum level srs cycle to this terminal, flow process terminates；
If being unsatisfactory for, enter step c2；
Step c2, attempted distributing according to the step c1 calculating gained srs cycle；
Step c3, judges whether current desired srs cycle inadequate resource, and resource abundance then distributes this srs cycle to this terminal
And terminating flow process, inadequate resource then enters step c4；
Step c4, the srs cycle is revised as the next stage cycle, then judges whether that all srs cycle resources distribute, does not divide
Join and then again applied for srs resource, be back to step c3 and rejudge whether current desired srs cycle inadequate resource, divide
Join then this terminal srs resource allocation failure, terminate flow process.
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| US10122492B2 (en) * | 2015-06-28 | 2018-11-06 | RF DSP Inc. | Channel state information acquisition in a wireless communication system |
| US11071135B2 (en) | 2017-01-04 | 2021-07-20 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Uplink transmission method based on uplink reference signal, terminal, and network device |
| CN107124769B (en) * | 2017-04-24 | 2019-09-17 | 京信通信系统（中国）有限公司 | A kind of resource allocation method and base station |
| CN109391304B (en) | 2017-08-11 | 2020-11-27 | 电信科学技术研究院 | Data transmission method, base station, terminal and storage medium |
| CN111224762B (en) * | 2018-11-26 | 2021-06-11 | 大唐移动通信设备有限公司 | Sounding reference signal resource allocation method and device |
| CN113170425B (en) | 2018-11-26 | 2023-06-02 | 华为技术有限公司 | Channel state information acquisition method and device and computer storage medium |
| CN110087319B (en) * | 2019-04-30 | 2022-11-08 | 成都中科微信息技术研究院有限公司 | Base station and system for allocating SRS resources according to QoS |
| CN110049570B (en) * | 2019-04-30 | 2022-11-08 | 成都中科微信息技术研究院有限公司 | Method and system for allocating PUCCH resources according to QoS |
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