CN102104964B - Method and system for coordinating and scheduling frequency band resources in cellular network - Google Patents
Method and system for coordinating and scheduling frequency band resources in cellular network Download PDFInfo
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Abstract
The invention discloses a method and system for coordinating and scheduling frequency band resources in a cellular network. The method comprises the following steps of: classifying user terminals into UE-CO (User Terminals to be Coordinated) and UE-NCO (User Terminals not to be Coordinated) according to the quality of a channel; dividing frequency band resources into a plurality of equal frequency bands, and determining the starting point of each frequency band; measuring the average value of receiving power RSRP (Reference Signal Receiving Power) of each sector in the periphery by using the UE-CO, determining the maximum interference source, and allocating the frequency band resources according to the maximum interference source; assuming that the maximum interference source of the UE-COis eliminated, and calculating the rate gain value delta C increased by a user by a base station accessed to a cell; and when the rate gain value delta C is greater than a preset threshold, sending arequest for coordinating interference to the base station in which the maximum interference source isby using the UE-CO, and simultaneously reporting the quantized delta C'. The invention can increase the throughput of users in the edges of a cell and the total throughput of the system by less data exchange, and is helpful for improving the effectivity and the justification of the system.
Description
Technical field
The present invention relates to the mobile communication technology field, relate in particular to a kind of method and system of cellular network intermediate frequency band resources coordinated scheduling.
Background technology
Modern wireless cellular network is an interference limiting system, and especially for Cell Edge User, high-intensity interference makes SINR very undesirable, has limited user's performance greatly.CoMP (multipoint cooperative) coordinated scheduling technology is arisen at the historic moment, by AP (access point, Access Point) the most rational resource allocation policy and resource coordination strategy are made in the mutual and coordination of the multidate information between, reduce the phase mutual interference of edge customer between AP to greatest extent.Specifically, consult in some residential quarter, to ban use of the component frequency resource or reduce transmitted power by decision-making, help the user who influenced by ICI that other residential quarters are in the edge and obtain higher SINR (Signal to Interference plus Noise Ratio), thereby promote edge customer spectrum efficiency and throughput.
Yet existing C oMP coordinated scheduling technology mainly contains 2 restrictions in actual applications: the one, and no matter the X2 interface that uses between the present AP still is the capacity angle from time-delay, all can't guarantee mutual a large amount of real time data, so information sharing degree is the data-handling capacity that is subject to interface between the AP between the AP; The 2nd, the coordinated scheduling technology when helping some Cell Edge User to promote performance, the part resource that will sacrifice other users unavoidably, this can cause the total throughput of system to descend usually.How balance sysmte overall performance and system's fairness also are to need the emphasis considered.
In sum, how promote the Cell Edge User throughput and further improvement system fairness and validity become the technical problem that this area needs to be resolved hurrily in the cost of less exchanges data.
Summary of the invention
The technical problem that the present invention will solve provides a kind of method and system of cellular network intermediate frequency band resources coordinated scheduling, for the user who needs coordinated scheduling, according to its sector, maximum interference source that is subjected to, for it distributes quasi-orthogonal band resource, and sending the coordinated scheduling request to adjacent AP, the expectation yield value after the maximum interference is eliminated in announcement.
Further, the same frequency user request that a plurality of maximum interference source is identical is concentrated to an AP, the AP that receives the request coordinated makes decisions according to a plurality of users' yield value, mourn in silence or reduce power at corresponding frequency band, promote thereby make edge customer in a plurality of residential quarters obtain preferable performance.
One aspect of the present invention provides a kind of method of cellular network intermediate frequency band resources coordinated scheduling, and this method comprises: according to channel quality user terminal is divided into user terminal UE-CO that needs coordinate and the user terminal UE-NCO of needs coordination not; Band resource is divided into a plurality of frequency ranges, determines described a plurality of frequency range starting point separately; Each described UE-CO measures the received power RSRP average of each sector of periphery, determines maximum interference source, and according to described maximum interference source allocated frequency band resource; Suppose the maximum interference source elimination of described UE-CO, insert the base station of residential quarter and calculate the rate gain value Δ C that described user can promote; When described rate gain value Δ C greater than pre-set threshold, then described UE-CO request that interference coordination is sent in the base station at place, described maximum interference source, the Δ C ' after announcement quantizes simultaneously.
Among the embodiment of the method for cellular network intermediate frequency band resources coordinated scheduling provided by the invention, described channel quality is taken to the average Signal to Interference plus Noise Ratio value SINR in predetermined a period of time.
Among the embodiment of the method for cellular network intermediate frequency band resources coordinated scheduling provided by the invention, described method also comprises: the sector number sort module is used for that the sector under the described access residential quarter is numbered classification and handles; And the sector of each identical numbering sends reference signal RS separately.
Among the embodiment of the method for cellular network intermediate frequency band resources coordinated scheduling provided by the invention, the described strong jamming source that is subjected to is the Resource Block RB quantity that the UE-CO of No. 1 sector obtains: W
M
Wherein, M is that to be subjected to strong jamming source be the UE-CO quantity of No. 1 sector; N is that to be subjected to strong jamming source be the UE-CO quantity of No. 2 sectors; L is described UE-NCO quantity.
Among the embodiment of the method for cellular network intermediate frequency band resources coordinated scheduling provided by the invention, the described strong jamming source that is subjected to is the Resource Block RB quantity that the UE-CO of No. 2 sector obtains: W
N
Wherein, M is that to be subjected to strong jamming source be the UE-CO quantity of No. 1 sector; N is that to be subjected to strong jamming source be the UE-CO quantity of No. 2 sectors; L is described UE-NCO quantity.
Among the embodiment of the method for cellular network intermediate frequency band resources coordinated scheduling provided by the invention, the Resource Block RB quantity that described UE-NCO obtains: W
L=3 * W-W
M-W
N
Among the embodiment of the method for cellular network intermediate frequency band resources coordinated scheduling provided by the invention, described method also comprises: each access point AP gathers whole interference coordination solicited messages of receiving in a period of time, and independently makes a strategic decision according to coordinating whether to improve the total throughput of system.
Among the embodiment of the method for cellular network intermediate frequency band resources coordinated scheduling provided by the invention, the means of coordination comprise: the Resource Block RB that reduces power or ban use of the UE-CO of request interference coordination to use.
Another aspect of the present invention provides a kind of system of cellular network intermediate frequency band resources coordinated scheduling, this system comprises: the user divides module, is used for according to channel quality user terminal being divided into user terminal UE-CO that needs coordinate and the user terminal UE-NCO of needs coordination not; Sub-modules such as frequency band are used for band resource is divided into a plurality of frequency ranges, determine described a plurality of frequency range starting point separately; The band resource scheduler module is used for the received power RSRP average of each each sector of described UE-CO periphery is measured, and determines maximum interference source, and according to described maximum interference source allocated frequency band resource; Suppose the maximum interference source elimination of described UE-CO, insert the base station of residential quarter and calculate the rate gain value Δ C that described user can promote; When described rate gain value Δ C greater than pre-set threshold, then described UE-CO request that interference coordination is sent in the base station at place, described maximum interference source, the Δ C ' after announcement quantizes simultaneously.
Among the embodiment of the system of cellular network intermediate frequency band resources coordinated scheduling provided by the invention, this system comprises: the sector number sort module is used for that the sector under the described access residential quarter is numbered classification and handles; And the sector of each identical numbering sends reference signal RS separately.
The method and system of the cellular network intermediate frequency band resources coordinated scheduling of confession of the present invention can bring the lifting of Cell Edge User throughput and overall system throughput with less data interaction amount, are conducive to improve validity and the fairness of system simultaneously.
Description of drawings
Fig. 1 shows the flow chart of the method for a kind of cellular network intermediate frequency band resources coordinated scheduling provided by the invention;
Fig. 2 shows the structural representation of the system of a kind of cellular network intermediate frequency band resources coordinated scheduling provided by the invention;
Fig. 3 shows the system model schematic diagram of cellular network intermediate frequency band resources coordinated scheduling provided by the invention;
Fig. 4 shows the sector of residential quarter among the embodiment of method of cellular network intermediate frequency band resources coordinated scheduling provided by the invention and divides schematic diagram;
Fig. 5 shows among the embodiment of method of cellular network intermediate frequency band resources coordinated scheduling provided by the invention system resource and divides schematic diagram;
Fig. 6 shows concrete signaling process among the embodiment of method of cellular network intermediate frequency band resources coordinated scheduling provided by the invention;
Fig. 7 shows the simulation result schematic diagram of the method for cellular network intermediate frequency band resources coordinated scheduling provided by the invention.
Embodiment
With reference to the accompanying drawings the present invention is described more fully, exemplary embodiment of the present invention wherein is described.
Fig. 1 shows the flow chart of the method for a kind of cellular network intermediate frequency band resources coordinated scheduling provided by the invention.
As shown in Figure 1, the method flow 100 of cellular network intermediate frequency band resources coordinated scheduling comprises:
Among the embodiment of the method for cellular network intermediate frequency band resources coordinated scheduling provided by the invention, described method also comprises: the sector number sort module is used for that the sector under the described access residential quarter is numbered classification and handles; And the sector of each identical numbering sends reference signal RS separately.
Among the embodiment of the method for cellular network intermediate frequency band resources coordinated scheduling provided by the invention, the described strong jamming source that is subjected to is the Resource Block RB quantity that the UE-CO of No. 1 sector obtains: W
M
Wherein, M is that to be subjected to strong jamming source be the UE-CO quantity of No. 1 sector; N is that to be subjected to strong jamming source be the UE-CO quantity of No. 2 sectors; L is described UE-NCO quantity.
Among the embodiment of the method for cellular network intermediate frequency band resources coordinated scheduling provided by the invention, the described strong jamming source that is subjected to is resource that the UE-CO of No. 2 sector obtains RB quantity: the W that determines
N
Wherein, M is that to be subjected to strong jamming source be the UE-CO quantity of No. 1 sector; N is that to be subjected to strong jamming source be the UE-CO quantity of No. 2 sectors; L is described UE-NCO quantity.
Among the embodiment of the method for cellular network intermediate frequency band resources coordinated scheduling provided by the invention, the Resource Block RB quantity that described UE-NCO obtains: W
L=3 * W-W
M-W
N
Among the embodiment of the method for cellular network intermediate frequency band resources coordinated scheduling provided by the invention, described method also comprises: each access point AP gathers whole interference coordination solicited messages of receiving in a period of time, and independently makes a strategic decision according to coordinating whether to improve the total throughput of system.Wherein, the means of coordination comprise: the Resource Block RB that reduces power or ban use of the UE-CO of request interference coordination to use.
Fig. 2 shows the structural representation of the system of a kind of cellular network intermediate frequency band resources coordinated scheduling provided by the invention.
As shown in Figure 2, the system 200 of cellular network intermediate frequency band resources coordinated scheduling comprises: the user divides sub-modules such as module 202, frequency band 204, band resource scheduler module 206 etc.Wherein
The user divides module 202, is used for according to channel quality user terminal being divided into user terminal UE-CO that needs coordinate and the user terminal UE-NCO of needs coordination not.
Sub-modules such as frequency band 204 are used for band resource is divided into a plurality of frequency ranges, determine described a plurality of frequency range starting point separately.
Band resource scheduler module 206 is used for the Signal to Interference plus Noise Ratio RSRP average of each each sector of described UE-CO periphery is measured, and determines maximum interference source, and according to described maximum interference source allocated frequency band resource; Suppose the maximum interference source elimination of described UE-CO, insert the base station of residential quarter and calculate the rate gain value Δ C that described user can promote; When described rate gain value Δ C greater than pre-set threshold, then described UE-CO request that interference coordination is sent in the base station at place, described maximum interference source, the Δ C ' after announcement quantizes simultaneously.
Among the embodiment of the system of cellular network intermediate frequency band resources coordinated scheduling provided by the invention, described system also comprises: sector number sort module 203 is used for that the sector under the described access residential quarter is numbered classification and handles; And the sector of each identical numbering sends reference signal RS separately.
Among the embodiment of the system of cellular network intermediate frequency band resources coordinated scheduling provided by the invention, described system also comprises: resource coordination decision-making module 208, after gathering whole interference solicited messages that (as a frame) received in a period of time, independently make a strategic decision according to coordinating whether to improve the total throughput of system.The means of coordinating comprise the RB that reduces power or ban use of requested interference coordination.
The present invention takes all factors into consideration the channel conditions of each user in the residential quarter and is subjected to disturbed condition, with user classification and make resource respectively and distribute, by setting up user side advanced person's resource coordination request, and base station end advanced person's resource coordination decision-making mechanism, reach the lifting together of marginal user performance and overall performance in the network, improve system's fairness.
At first, the model of place to whole system is described in further detail.
Fig. 3 shows the system model schematic diagram of cellular network intermediate frequency band resources coordinated scheduling provided by the invention.
As shown in Figure 3, in multi-cell system, the downlink data that the base station sends is exactly interference signal for the same frequency user of neighbor cell.Especially for the edge customer of neighbor cell, this interference may be quite strong.The base station of the too close neighbor cell of the UE1 among the figure and UE3 just is subjected to strong interference probably, causes SINR very low, can only the less code modulation mode of supporting rate, and business throughput is low.UE1 and UE3 can send the resource coordination request to the base station of this residential quarter according to the series of computation result, and this request is directed to the RB (Resource Block, Resource Block) that oneself uses, and by this base station this request is passed to neighbor cell base station by X2 interface.Neighbor cell base station makes decisions according to the solicited message of receiving:
1, accepts request, mourn in silence or reduce transmitting power at the frequency band of request;
2, do not accept request, keep original scheduling result.
If made first kind of decision-making, namely abandon using or reduce power and use requested RB, then for the UE of the request of sending, disturb and eliminate or reduced.So the SINR that sends the UE of request has tangible lifting, business throughput can have clear improvement.
To introduce the process step of specific implementation of the present invention in detail below: in system when operation, be divided into the user (UE-CO) who needs coordinated scheduling and the user (UE-NCO) who does not need coordinated scheduling according to the channel quality of UE in the time of a frame (by UE uplink feedback channel quality or AP according to up reception estimated channel quality) with UE.The standard of channel quality is made as the average SINR in the frame time, if this value is less than threshold value SINR
Gate(being made as 2dB in the emulation) thinks that then this subscriber channel situation is relatively worse, namely is divided into to be UE-CO; If this value is greater than SINR
Gate, think that then the good user of channel conditions is UE-NCO.This judgement is given base station side and is finished, and divides the result and notify each user by the base station in downlink signaling.Do so mainly based on following 2 considerations:
The first, corresponding resource allocation policy need be made according to user's division information in the base station among the present invention;
The second, prevent some selfish user, self channel conditions is good, and the UE-CO that but still disguises oneself as obtains extra benefit.
In general, because channel conditions is bad, can not use senior modulation coding mode, the UE-CO throughput is less, after the coordinated scheduling processing in these user SINR will improve, be in benefited status; And the UE-NCO channel conditions is good, and throughput is bigger, after coordinated scheduling may lose the RB that part has been assigned with in handling or reduce power and use these RB, cause performance loss to a certain extent.Do like this, help to improve the fairness of system.
Fig. 4 shows the sector of residential quarter among the embodiment of method of cellular network intermediate frequency band resources coordinated scheduling provided by the invention and divides schematic diagram.
As shown in Figure 4, each residential quarter can be divided into the sector of three homalographics.With easternmost sector as No. 1 sector, by counterclockwise order respectively label be No. 1, No. 2, No. 3.Each residential quarter is to divide like this, and the reason of division is that accurate orthogonal resource allocation is relevant with sector number.Each sector sends RS (reference signal, Reference Signal) signal separately, separates mutually on the time domain, though increase certain RS expense, can help the user area branch from the disturbed condition of neighbor cell.Do like this, the user just no longer assigns interference signal as an integral body, but can identify the strongest interference source.The resource coordination strategy of back has also utilized these characteristics just, the resource coordination request is all concentrated on the user is disturbed on the maximum source.
Fig. 5 shows among the embodiment of method of cellular network intermediate frequency band resources coordinated scheduling provided by the invention system resource and divides schematic diagram.
As shown in Figure 5, the present invention will separately carry out the resource distribution to above two kinds of users.For fear of coordinating conflict and make more to be benefited with the frequency user in same resource generation, the RB that the user of different sectors distributes has done quasi-orthogonal processing: at first, the base station has obtained three frequency band starting points to three frequency ranges that are divided into of band resource equalization.Each UE-CO measures the RSRP average of peripheral several sectors, determines the maximum interference source, and according to its maximum interference source Resources allocation.Be example with the user in the 3rd sector in 3 sectors, the accurate orthogonal processing that user resources are distributed explains.
If the user be UE-CO, and to be subjected to strong jamming source be No. 1 sector (sector that may be this residential quarter also may be the sector of neighbor cell), then preferentially will be that the bandwidth assignment of starting point is given this user's use with the frequency band of the first sector correspondence;
If the user be UE-CO, and to be subjected to strong jamming source be No. 2 sectors (sector that may be this residential quarter also may be the sector of neighbor cell), then preferentially will be that the bandwidth assignment of starting point is given this user's use with the frequency band of the second sector correspondence;
If the user is UE-NCO, the bandwidth assignment that then will be starting point with the frequency band of the 3rd sector correspondence uses for this user, if all UE-CO assign, the frequency band of the first and second sector correspondences is that the frequency range of starting point also has residual resource piece RB there be not distribution, then all distributes to UE-NCO.
Mention above, the frequency band of distributing to UE-CO may have remaining RB.This is in the process of distributing, and will consider above three kinds of users' relative populations, rather than simply will distribute separately after the spectrum averaging trisection.Still be example with No. 3 sectors, we make the following assumptions user's distribution and system resource number:
The quantity of the whole RB of system: 3 * W;
Being subjected to strong jamming source is the UE-CO quantity of No. 1 sector: M
Be subjected to strong jamming source and be the RB quantity that the UE-CO of No. 1 sector obtains: W
M
Being subjected to strong jamming source is the UE-CO quantity of No. 2 sectors: N
Be subjected to strong jamming source and be the RB quantity that the UE-CO of No. 1 sector obtains: W
N
UE-NCO quantity: L
The RB quantity that UE-NCO obtains: W
L
System resource is distributed according to the following rules so:
W
L＝3×W-W
M-W
N
All operate by above method all residential quarters, has then finished quasi-orthogonal resource and distributed.Allocation result is, all are subjected to the UE-CO that the same fan area code disturbs and all are dispensed in the same frequency range, and all UE-NCO also is concentrated in the similar frequency range.The RB quantity of distributing to various users is to carry out according to various users' relative scale.The processing stage of just having entered resource coordination after resource has assigned.
Insert cell base station and judge maximum interference source on the RB of its use for each UE-CO, and calculate this interference source of hypothesis and eliminate, user SINR situation occurs after the to a certain degree improvement, the rate gain value Δ C that can promote.When gain during greater than certain thresholding, the request that this user sends interference coordination to the base station at this interference source place, the Δ C after announcement quantizes simultaneously.
After each AP gathers whole interference solicited messages that (as a frame) received in a period of time, independently make a strategic decision according to coordinating whether to improve the total throughput of system.The means of coordinating comprise the RB that reduces power or ban use of requested interference coordination.Suppose AP
jReceive from a plurality of AP (1,2 ... I) solicited message and corresponding the interference are eliminated back rate gain value Δ C
i, then independently make decisions according to following formula.If accept request, then feed back the 1bit response message.
Wherein, Δ C
i, P is for working as AP
jWhen on requested RB, sending data with power P, AP
iThroughput gain; Δ C
J, PFor working as AP
jThroughput drop-out value when on requested RB, sending data with power P.P is AP
jTransmitted power on requested RB, and P ∈ [0, P
Low, P
High].
In brief, certain receives the request of coordination, and (request coordinated may be near a plurality of sectors, also may be only from some sectors on every side) the base station, analysis request information, if own residential quarter part uses user's (these users are positioned at the edge of two residential quarters usually) of identical RB to cause relatively serious disturbance to other residential quarters on RB, and the use of sacrificing own those RB of residential quarter, can bring the significantly lifting of the user SINR of other one or more residential quarters, thereby increase the total throughput in several residential quarters.So, just accept to coordinate request, according to circumstances abandon the use of this RB of this residential quarter, perhaps reduce power and use.And if by analysis request information, find to sacrifice own RB use, the throughput gain of bringing to peripheral cell can not compensate the loss of own cell throughout, so just this request is ignored.Thereby the present invention not only pays close attention to the performance boost of Cell Edge User, and the lifting together of marginal user performance and overall performance in the network has been accomplished in the also lifting of the total throughput of attention location system simultaneously, improves system's fairness.
Consider following special sight, when the larger interference that all is subjected to respectively with user UE1 and UE2 frequently from AP2 and AP1, will send the request of coordination to the other side simultaneously, claim to occur this moment coordinating the request conflict.When the coordination request conflict of a plurality of minizones occurring, if adopt the centralized decision method, will bring bigger time delay and Signalling exchange expense; And the employing distributed decision making a plurality of AP then may occur not use this frequency band, and the phenomenon that causes frequency band to lose has been wasted valuable system resource, has reduced the availability of frequency spectrum.Obviously above-mentioned either way is unacceptable.So the effect that the accurate orthogonalization of the resource of making before the resource coordination is distributed is embodied.The result of accurate orthogonal processing is exactly, and two adjacent sectors are the special circumstances considered above impossible occur.Because, two users in two sectors are dispensed on the words in the same frequency range, just illustrate that two users are subjected to the strong interference of another sector of periphery, it is UE-NCO that a user is perhaps wherein arranged, so the feelings of the request of coordination can not take place to send mutually, thereby solve the coordination request conflict of two minizones.In fact, after the accurate orthogonal processing before the process, easier certain frequency range that certain sector occurs of system is received the situation of the request of coordinating more than 1, thereby has increased the obtainable maximum gain of Coordination Treatment.
Fig. 6 shows concrete signaling process among the embodiment of method of cellular network intermediate frequency band resources coordinated scheduling provided by the invention.As shown in Figure 6, all signaling consumptions are described as follows:
AP1 → UE feeds back request: 1bit, and whether expression needs the user to send feedback information to AP;
UE → AP1 feedback information: 8bit, 3bit the strongest sector, interference source around being used for identifying wherein, 5bit is used for the most strongly disturbing RSRP average of quantization means;
AP1 → AP2 coordinated scheduling request: can send solicited message on each RB, if do not ask then need 1bit to represent not request scheduling, if request then need 1bit to represent request scheduling, and would need extra 4bit to represent the yield value Δ C that quantizes.
From above statistics as can be seen, the signaling consumption of wanting required for the present invention is in reduced levels.
Whether the present invention can obtain preferable performance by the signaling consumption of reduced levels for checking, and next the technical scheme that the present invention is proposed is carried out emulation to have verified this algorithm validity and validity.Table 1 shows the technical parameter that emulation of the present invention is used.
| Cellular Layout | Hexagonal with K＝19 |
| Sector Number per |
3 |
| Inter-cell distance | 500m |
| System Bandwidth | 10MHz |
| Number of subcarriers per RB | 12 |
| Number of RBs(N) | 50 |
| TTI length | 1ms |
| Number of UEs per cell(M) | 30 |
| |
0～20km/h |
| Path Loss Model | L＝34.5+38.0log 10(d)[dB] |
| Log Normal Shadowing | 8dB |
| Thermal noise | -174dBm/Hz |
| Transmitting power per cell | 43dBm |
| Schedule method | PF |
Table 1 simulation parameter and value thereof
Fig. 7 shows the simulation result schematic diagram of the method for cellular network intermediate frequency band resources coordinated scheduling provided by the invention.
As shown in Figure 7, wherein dotted line represents the simulation result of traditional algorithm, the result curve that the solid line representative adopts algorithm of the present invention to carry out emulation; The boundary shows that overall system throughput has tangible lifting, reaches 11.6%, edge customer throughput hoisting 11.3%.This patent has been obtained the preferable performance lifting by the signaling consumption of reduced levels, has verified this algorithm validity and validity.
With reference to the exemplary description of aforementioned the present invention, those skilled in the art can clearly know the present invention and have the following advantages: the method and system of cellular network intermediate frequency band resources coordinated scheduling provided by the invention, the resource coordination method that the present invention proposes is united the interests of having considered overall system interests and edge customer, rationally arrange the use of frequency range by quasi-orthogonal resource distribution mode, set up the decision-making mode of optimizing, the final optimum distribution that realizes resource, thereby can guarantee the fairness in the network, promote network performance.Propose the specific system parameters of a cover though it is pointed out that the present invention, because thought proposed by the invention has novelty, this method itself has certain generality, also is applicable to following flattening networking.Therefore, when being applied to have the different system parameter, the present invention program still can embody superiority.
Description of the invention provides for example with for the purpose of describing, and is not exhaustively or limit the invention to disclosed form.Many modifications and variations are obvious for the ordinary skill in the art.Selecting and describing embodiment is for better explanation principle of the present invention and practical application, thereby and makes those of ordinary skill in the art can understand the various embodiment that have various modifications that the present invention's design is suitable for special-purpose.
Claims (10)
1. the method for a cellular network intermediate frequency band resources coordinated scheduling is characterized in that, described method comprises:
According to channel quality user terminal is divided into user terminal UE-CO that needs coordinate and the user terminal UE-NCO of needs coordination not;
Band resource is divided into a plurality of frequency ranges, determines described a plurality of frequency range starting point separately;
Each described UE-CO measures the received power RSRP average of each sector of periphery, determines maximum interference source, and according to described maximum interference source allocated frequency band resource;
Suppose the maximum interference source elimination of described UE-CO, insert the base station of residential quarter and calculate the rate gain value Δ C that described user can promote;
When described rate gain value Δ C greater than pre-set threshold, then described UE-CO request that interference coordination is sent in the base station at place, described maximum interference source, the Δ C after announcement quantizes simultaneously.
2. method according to claim 1 is characterized in that, described channel quality is taken from the average Signal to Interference plus Noise Ratio value SINR in predetermined a period of time.
3. method according to claim 1 is characterized in that, described method also comprises: the sector under the described access residential quarter is numbered classification handles; And the sector of each identical numbering sends reference signal RS separately.
4. method according to claim 1 is characterized in that, is subjected to strong jamming source and is the Resource Block RB quantity that the UE-CO of No. 1 sector obtains: W
M
Wherein, M is that to be subjected to strong jamming source be the UE-CO quantity of No. 1 sector; N is that to be subjected to strong jamming source be the UE-CO quantity of No. 2 sectors; L is described UE-NCO quantity.
5. method according to claim 4 is characterized in that, the described strong jamming source that is subjected to is the Resource Block RB quantity that the UE-CO of No. 2 sector obtains: W
N
Wherein, M is that to be subjected to strong jamming source be the UE-CO quantity of No. 1 sector; N is that to be subjected to strong jamming source be the UE-CO quantity of No. 2 sectors; L is described UE-NCO quantity.
6. method according to claim 5 is characterized in that, the Resource Block RB quantity that described UE-NCO obtains: W
L=3 * W-W
M-W
N
7. method according to claim 1 is characterized in that, described method also comprises:
Each access point AP gathers whole interference coordination solicited messages of receiving in a period of time, and whether can improve the total throughput of system according to the means of coordinating and make a strategic decision independently.
8. method according to claim 7 is characterized in that, the means of coordination comprise: the Resource Block RB that reduces power or ban use of the UE-CO of request interference coordination to use.
9. the system of a cellular network intermediate frequency band resources coordinated scheduling is characterized in that, described system comprises:
The user divides module, is used for according to channel quality user terminal being divided into user terminal UE-CO that needs coordinate and the user terminal UE-NCO of needs coordination not;
Sub-modules such as frequency band are used for band resource is divided into a plurality of frequency ranges, determine described a plurality of frequency range starting point separately;
The band resource scheduler module is used for the received power RSRP average of each each sector of described UE-CO periphery is measured, and determines maximum interference source, and according to described maximum interference source allocated frequency band resource; Suppose the maximum interference source elimination of described UE-CO, insert the base station of residential quarter and calculate the rate gain value Δ C that described user can promote; When described rate gain value Δ C greater than pre-set threshold, then described UE-CO request that interference coordination is sent in the base station at place, described maximum interference source, the Δ C after announcement quantizes simultaneously.
10. system according to claim 9 is characterized in that, described system also comprises: the sector number sort module is used for that the sector under the described access residential quarter is numbered classification and handles; And the sector of each identical numbering sends reference signal RS separately.
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| CN102958187B (en) * | 2011-08-22 | 2016-05-18 | 上海贝尔股份有限公司 | Accidental access method in isomery mobile communications network |
| CN103024894B (en) * | 2011-09-21 | 2015-08-19 | 华为技术有限公司 | Many base stations interference source localization method and equipment |
| EP3020243A1 (en) * | 2013-07-11 | 2016-05-18 | Interdigital Patent Holdings, Inc. | Methods and procedures for scheduling to sector-edge and non-sector-edge station groups |
| CN112188620B (en) * | 2019-07-01 | 2022-04-05 | 华为技术有限公司 | Communication method and device |
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| CN101483873A (en) * | 2008-12-26 | 2009-07-15 | 西安电子科技大学 | Uplink multipoint collaboration implementing method combining inter-cell interference coordination |
| CN101511107A (en) * | 2009-03-23 | 2009-08-19 | 北京邮电大学 | Frequency planning method based on synergic multi-point single-user multi-input multi-output |
| CN101836472A (en) * | 2007-08-22 | 2010-09-15 | 诺基亚西门子通信公司 | Exchange of scheduling strategies for interference coordination |
| CN101848532A (en) * | 2009-03-24 | 2010-09-29 | 大唐移动通信设备有限公司 | Reference signal received power threshold adjusting method and equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101836472A (en) * | 2007-08-22 | 2010-09-15 | 诺基亚西门子通信公司 | Exchange of scheduling strategies for interference coordination |
| CN101483873A (en) * | 2008-12-26 | 2009-07-15 | 西安电子科技大学 | Uplink multipoint collaboration implementing method combining inter-cell interference coordination |
| CN101511107A (en) * | 2009-03-23 | 2009-08-19 | 北京邮电大学 | Frequency planning method based on synergic multi-point single-user multi-input multi-output |
| CN101848532A (en) * | 2009-03-24 | 2010-09-29 | 大唐移动通信设备有限公司 | Reference signal received power threshold adjusting method and equipment |
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