CN106027216A - Station scheduling method for wireless station-to-station (S2S) communication system - Google Patents

Abstract

The invention discloses a station scheduling method for a wireless station-to-station (S2S) communication system. A sector where a station is located and receiving signal quality of the sector are determined by scanning in a sector level, an S2S mechanism can be established when the two stations in the same sector and the two edge stations in the adjacent sectors meet a certain condition, and the base station schedules the plurality of S2S station pairs in a concentrated manner for simultaneous communication. Compared with the prior art, the scheme of the method provided by the invention does not need to establish an S2S mechanism execution device finding process for the stations. In addition, the plurality of S2S station pairs are in communication with low power, so that the power consumption is low and the interference is small while the network capacity is improved.

Description

The website dispatching method of wireless S2S communication system

Technical field

The invention belongs to wireless communication technology field, particularly to the website scheduling mechanism scheme of wireless S2S communication system.

Background technology

Along with the universal of intelligent terminal and the explosive growth of network capacity, towards the evolution of the 5th third-generation mobile communication (5G) Demand seems more urgent.Abundant communication pattern and the lifting of terminal experience thus brought will be one considerable Evolution tendency.As a candidate technologies towards 5G, site-to-site (Station-to-Station, S2S) communication has Potential improves network performance, the advantage of lifting website experience, therefore suffers from extensive concern.

S2S communication i.e. terminal direct connection technology, it is allowed to adjoining website directly carries out data communication, it is not necessary to through central authorities Control the forwarding of access point.It can resource in multiplexed network, increase the spectrum efficiency of whole communication system, can be in certain journey The problem solving the shortage of wireless communication system frequency spectrum resource on degree.Simultaneously as S2S communication distance is relatively short, channel quality Preferably, it is possible to realize higher transfer rate, shorter time delay and lower power consumption.

But, if S2S communication community, multiplexing place resource other websites of community may be interfered, community other Site communication be likely to can to S2S communication interfere, it addition, multiple S2S communication between be likely to interfere.At present, The key technology realizing S2S efficient communication is power control and interference coordination.Existing research primarily focuses on leads at given S2S During letter pair, ensure network communication quality by reducing the effectively distribution of power and running time-frequency resource, and for how in community In effectively dispatch S2S communicate to the rarest research.

Summary of the invention

Goal of the invention: in order to make up the deficiencies in the prior art, the present invention proposes the website dispatching party of wireless S2S communication system Method, is dispatched multiple website by base station centralized distribution simultaneously and communicates to performing S2S, can reduce again dry while promoting network throughput Disturb.

Technical scheme: in order to realize the purpose of foregoing invention, the present invention proposes the website dispatcher of wireless S2S communication system Scheme processed, specifically includes following steps:

The website dispatching method of wireless S2S communication system, it is characterised in that specifically include following steps:

Step 1: website knows its residing sector ID and received signal quality by sector-level scanning, and feeds back its institute At sector number ID and received signal quality I_i,ID, and adjacent sector numberWith corresponding received signal qualityWherein website institute Place's sector ID is the scanning sector number that sweep phase optimum receiving signal quality is corresponding.In feedback procedure, if website is limit, sector Edge website, the most directly feeds back its adjacent sector numberWith corresponding received signal qualityIf not sector-edge website, then will Its adjacent sector numberWith corresponding received signal qualityIt is empty.

Judge that website is sector-edge website method particularly includes: if the adjacent sector downlink signal quality that receives of website with Residing for it, sector downlink signal quality is close, then judge this website as sector-edge website, the most satisfied

$|I_{i,ID}-I_{i,\stackrel{\‾}{ID}}|\≤\mathrm{\ϵ}---\left(1\right)$

Wherein, ε (ε >=0) is edge site decision threshold, and i is site index number, and ID is the sector number at website i place, For the adjacent sector number of website i, I_i,_IDFor base station sector ID launch signal time website i received signal quality,Exist for base station SectorThe received signal quality of website i when launching signal.

Step 2: according to website feedback information, it is determined that whether this website can set up S2S mechanism, method particularly includes:

(1) website i and website j are in same sector ID, can be divided into three kinds of situations:

Situation 1: if website i and website j is not the edge site of sector ID, when the most simultaneously meeting condition 1 and 2, permissible Set up S2S directly to communicate；

The down receiving signal quality of condition 1: two website should be close, the most satisfied

|I_i,ID-I_j,ID|≤α (2)

Wherein, I_i,IDFor the base station received signal quality of website i, I when sector ID launches signal_j,IDFor base station in sector The received signal quality of website j when ID launches signal, α is two website S2S communication threshold；

Should avoid, to the interference of other active stations in sector, not depositing around i.e. two websites during the communication of condition 2:S2S as far as possible At neighbouring active stations, meet

|I_i,ID-I_k,ID| >=β and | I_j,ID-I_k,ID|≥β,k∈Ω_IDAnd k ≠ i, j (3)

Wherein, I_i,IDFor the base station received signal quality of website i, I when sector ID launches signal_j,IDFor base station in sector The received signal quality of website j, site k (k ∈ Ω when ID launches signal_ID) it is the active stations in sector ID, I_k,IDFor base station The received signal quality of site k when sector ID launches signal, β represents the interference threshold to other active stations.

Situation 2: if there is a website i is the edge site of sector ID, the adjacent sector number of website i isThe fullest During foot condition 1,2 and 3, S2S can be set up and directly communicate；

Condition 3: sector-edge website should avoid the interference to its adjacent sector-edge active stations, the most satisfied

|I_i,ID-I_m,ID|≥β (4)

Wherein, I_i,IDFor the base station received signal quality of website i, website when sector ID launches signalFor SectorIn edge active stations, I_m,IDRepresent the received signal quality of website m, β when signal is launched by sector ID in base station Represent the interference threshold to other active stations.

Situation 3: if website i and website j is the edge site of sector ID, the adjacent sector number of website i isWebsite j's Adjacent sector number isWhen meeting condition 1,2,3 and 4 the most simultaneously, S2S can be set up and directly communicate；

The adjacent sector number of condition 4: two sector-edge website is identical, the most satisfied

${\stackrel{\‾}{ID}}_i={\stackrel{\‾}{ID}}_j---\left(5\right)$

(2) website i and website j is in different sector:

Situation 4: if website i is the edge site of sector ID, its adjacent sector isWebsite j is sectorStation, edge Point, its adjacent sector is ID, when meeting condition 5 and 6, can set up S2S mechanism the most simultaneously；

The down receiving signal quality of condition 5: two sector-edge website should be close, the most satisfied

$|I_{i,ID}-I_{j,\stackrel{\‾}{ID}}|\≤\mathrm{\α}---\left(6\right)$

Wherein, I_i,IDFor base station sector ID launch signal time website i received signal quality,For base station in sectorThe received signal quality of website j when launching signal, α is two website S2S communication threshold；

Neighbouring active stations is there is not around condition 6: two sector-edge website, the most satisfied

Wherein, I_i,IDFor base station the received signal quality website of website i, k (k ∈ Ω when sector ID launches signal_ID) it is Active stations in sector ID, I_k,IDFor base station sector ID launch signal time site k received signal quality,For base station In sectorThe received signal quality of website j when launching signal,For sectorIn edge active stations, Represent that sector is passed through in base stationThe received signal quality of website m when launching signal, β represents the interference threshold to other active stations Value.

Step 3: simultaneously dispatch multiple website pair that can set up S2S mechanism, sends broadcast singal and informs that it sets up S2S machine System；

Step 4: after website receives the S2S schedule information of broadcast, sets up S2S link；

Step 5: each S2S communicates to directly carrying out data transmission with low-power.

Beneficial effect: compared with prior art, the invention have the advantages that the website obtained according to the sector scanning stage Grouping information, it is considered to two websites and the two edges website of adjacent sectors in same sector can set up S2S mechanism, simplify The selection of S2S website pair；Avoided other adjacent to the interference of active stations by conditional judgment when selecting S2S website pair； By the multiple website of base station centralized dispatching to carrying out S2S communication with low-power simultaneously, improve the performance of whole network.

Accompanying drawing explanation

Fig. 1 is packet schematic diagram in site sector in embodiment of the present invention small area；

Detailed description of the invention

Below in conjunction with specific embodiment, it is further elucidated with the present invention, it should be understood that these embodiments are merely to illustrate the present invention Rather than restriction the scope of the present invention, after having read the present invention, the those skilled in the art's various equivalences to the present invention The amendment of form all falls within the application claims limited range.

Embodiments provide the website dispatching method of a kind of wireless S2S communication system, by sector-level scanning really Determining the sector residing for user and received signal quality, in community, website packet situation is as shown in Figure 1, it is considered in same sector Two websites and be in the two edges website of adjacent sectors and can set up S2S mechanism under meeting certain condition, by base station set Dispatch multiple S2S website to communicating simultaneously.Specifically include following process:

Step 1: website knows its residing sector ID and received signal quality by sector-level scanning, and feeds back its institute At sector number ID and received signal quality I_i,ID, and adjacent sector numberWith corresponding received signal qualityWherein website institute Place's sector ID is the scanning sector number that sweep phase optimum receiving signal quality is corresponding.In feedback procedure, if website is limit, sector Edge website, the most directly feeds back its adjacent sector numberWith corresponding received signal qualityIf not sector-edge website, then will Its adjacent sector numberWith corresponding received signal qualityIt is empty.

Judge that website is sector-edge website method particularly includes: if the adjacent sector downlink signal quality that receives of website with Residing for it, sector downlink signal quality is close, then judge this website as sector-edge website, the most satisfied

$|I_{i,ID}-I_{i,\stackrel{\‾}{ID}}|\≤\mathrm{\ϵ}---\left(1\right)$

Wherein, ε (ε >=0) is edge site decision threshold, and i is site index number, and ID is the sector number at website i place, For the adjacent sector number of website i, I_i,IDFor base station sector ID launch signal time website i received signal quality,Exist for base station SectorThe received signal quality of website i when launching signal.

Step 2: according to website feedback information, it is determined that whether this website can set up S2S mechanism, method particularly includes:

(1) website i and website j are in same sector ID, can be divided into three kinds of situations:

Situation 1: if website i and website j is not the edge site of sector ID, when the most simultaneously meeting condition 1 and 2, permissible Set up S2S directly to communicate；

The down receiving signal quality of condition 1: two website should be close, the most satisfied

|I_i,ID-I_j,ID|≤α (2)

Wherein, I_i,IDFor the base station received signal quality of website i, I when sector ID launches signal_j,IDFor base station in sector The received signal quality of website j when ID launches signal, α is two website S2S communication threshold；

Should avoid, to the interference of other active stations in sector, not depositing around i.e. two websites during the communication of condition 2:S2S as far as possible At neighbouring active stations, meet

|I_i,ID-I_k,ID| >=β and | I_j,ID-I_k,ID|≥β,k∈Ω_IDAnd k ≠ i, j (3)

Wherein, I_i,IDFor the base station received signal quality of website i, I when sector ID launches signal_j,IDFor base station in sector The received signal quality of website j, site k (k ∈ Ω when ID launches signal_ID) it is the active stations in sector ID, I_k,IDFor base station The received signal quality of site k when sector ID launches signal, β represents the interference threshold to other active stations.

Situation 2: if there is a website i is the edge site of sector ID, the adjacent sector number of website i isThe fullest During foot condition 1,2 and 3, S2S can be set up and directly communicate；

Condition 3: sector-edge website should avoid the interference to its adjacent sector-edge active stations, the most satisfied

|I_i,ID-I_m,ID|≥β (4)

Wherein, I_i,IDFor the base station received signal quality of website i, website when sector ID launches signalFor SectorIn edge active stations, I_m,IDRepresent the received signal quality of website m, β when signal is launched by sector ID in base station Represent the interference threshold to other active stations.

Situation 3: if website i and website j is the edge site of sector ID, the adjacent sector number of website i isWebsite j's Adjacent sector number isWhen meeting condition 1,2,3 and 4 the most simultaneously, S2S can be set up and directly communicate；

The adjacent sector number of condition 4: two sector-edge website is identical, the most satisfied

${\stackrel{\‾}{ID}}_i={\stackrel{\‾}{ID}}_j---\left(5\right)$

(2) website i and website j is in different sector:

Situation 4: if website i is the edge site of sector ID, its adjacent sector isWebsite j is sectorStation, edge Point, its adjacent sector is ID, when meeting condition 5 and 6, can set up S2S mechanism the most simultaneously；

The down receiving signal quality of condition 5: two sector-edge website should be close, the most satisfied

$|I_{i,ID}-I_{j,\stackrel{\‾}{ID}}|\≤\mathrm{\α}---\left(6\right)$

Wherein, I_i,IDFor base station sector ID launch signal time website i received signal quality,For base station in sectorThe received signal quality of website j when launching signal, α is two website S2S communication threshold；

Neighbouring active stations is there is not around condition 6: two sector-edge website, the most satisfied

Wherein, I_i,IDFor base station the received signal quality website of website i, k (k ∈ Ω when sector ID launches signal_ID) it is Active stations in sector ID, I_k,IDFor base station sector ID launch signal time site k received signal quality,For base station In sectorThe received signal quality of website j when launching signal,For sectorIn edge active stations, Represent that sector is passed through in base stationThe received signal quality of website m when launching signal, β represents the interference threshold to other active stations Value.

Step 3: simultaneously dispatch multiple website pair that can set up S2S mechanism, sends broadcast singal and informs that it sets up S2S machine System；

Step 4: after website receives the S2S schedule information of broadcast, sets up S2S link；

Step 5: each S2S communicates to directly carrying out data transmission with low-power.

Claims (4)

1. The website dispatching method of the most wireless S2S communication system, it is characterised in that specifically include following steps:

   Step 1: website knows its residing sector ID and received signal quality by sector-level scanning, and feeds back its place fan Area code ID and received signal quality I_i,ID, and adjacent sector numberWith corresponding received signal qualityThe wherein residing fan of website District ID is the scanning sector number that sweep phase optimum receiving signal quality is corresponding；

   Step 2: according to website feedback information, it is determined that whether this website can set up S2S mechanism；

   Step 3: simultaneously dispatch multiple website pair that can set up S2S mechanism, sends broadcast singal and informs that it sets up S2S mechanism；

   Step 4: after website receives the S2S schedule information of broadcast, sets up S2S link；

   Step 5: each S2S communicates to directly carrying out data transmission with low-power.
2. The website dispatching method of wireless S2S communication system the most according to claim 1, it is characterised in that described step 1 is anti- During feedback, if website is sector-edge website, the most directly feed back its adjacent sector numberWith corresponding received signal quality If not sector-edge website, then by its adjacent sector numberWith corresponding received signal qualityIt is empty.
3. The website dispatching method of wireless S2S communication system the most according to claim 2, it is characterised in that judge that website is Sector-edge website method particularly includes: if the adjacent sector downlink signal quality that receives of website with its residing for sector downstream signal Quality is close, then judge this website as sector-edge website, the most satisfied

   $|I_{i,ID}-I_{i,\stackrel{\‾}{ID}}|\≤\mathrm{\ϵ}---\left(1\right)$

   Wherein, ε (ε >=0) is edge site decision threshold, and i is site index number, and ID is the sector number at website i place,For station The adjacent sector number of some i, I_i,IDFor base station sector ID launch signal time website i received signal quality,For base station in sectorThe received signal quality of website i when launching signal.
4. The website dispatching method of wireless S2S communication system the most according to claim 1, it is characterised in that described step 2 is sentenced Determine website and can set up S2S mechanism method particularly includes:

   (1), time in website i and website j are in same sector ID, it is divided into three kinds of situations:

   Situation 1: if website i and website j is not the edge site of sector ID, when the most simultaneously meeting condition 1 and 2, can set up S2S directly communicates；

   Situation 2: if there is a website i is the edge site of sector ID, the adjacent sector number of website i isMeet bar the most simultaneously During part 1,2 and 3, S2S can be set up and directly communicate；

   Situation 3: if website i and website j is the edge site of sector ID, the adjacent sector number of website i isThe adjacent fan of website j Area code isWhen meeting condition 1,2,3 and 4 the most simultaneously, S2S can be set up and directly communicate；

   (2) when website i is in different sector from website j:

   Situation 4: if website i is the edge site of sector ID, its adjacent sector isWebsite j is sectorEdge site, it is adjacent Sector is ID, when meeting condition 5 and 6, can set up S2S mechanism the most simultaneously；

   The actual conditions that need to meet is as follows:

   The down receiving signal quality of condition 1: two website should be close, the most satisfied

   |I_{I, ID}-I_{J, ID}|≤α (2)

   Wherein, I_{I, ID}For the base station received signal quality of website i, I when sector ID launches signal_{J, ID}Send out in sector ID for base station The received signal quality of website j when penetrating signal, α is two website S2S communication threshold；

   Should avoid, to the interference of other active stations in sector, around i.e. two websites, there is not neighbour during the communication of condition 2:S2S as far as possible Near active stations, meets

   |I_{I, ID}-I_{K, ID}| >=β and | I_{J, ID}-I_{K, ID}| >=β, k ∈ Ω_IDAnd k ≠ i, j (3)

   Wherein, I_{I, ID}For the base station received signal quality of website i, I when sector ID launches signal_{J, ID}Send out in sector ID for base station The received signal quality of website j when penetrating signal, site k (k ∈ Ω_ID) it is the active stations in sector ID, I_{K, ID}For base station at fan The received signal quality of site k when district ID launches signal, β represents the interference threshold to other active stations；

   Condition 3: sector-edge website should avoid the interference to its adjacent sector-edge active stations, the most satisfied

   |I_{I, ID}-I_{M, ID}|≥β (4)

   Wherein, I_{I, ID}For the base station received signal quality of website i, website when sector ID launches signalFor sectorIn edge active stations, I_{M, ID}Representing the received signal quality of website m when signal is launched by sector ID in base station, β represents Interference threshold to other active stations；

   The adjacent sector number of condition 4: two sector-edge website is identical, the most satisfied

   ${\stackrel{\‾}{ID}}_i={\stackrel{\‾}{ID}}_j---\left(5\right)$

   The down receiving signal quality of condition 5: two sector-edge website should be close, the most satisfied

   $|I_{i,ID}-I_{j,\stackrel{\‾}{ID}}|\≤\mathrm{\α}---\left(6\right)$

   Wherein, I_i,IDFor base station sector ID launch signal time website i received signal quality,For base station in sectorSend out The received signal quality of website j when penetrating signal, α is two website S2S communication threshold；

   Neighbouring active stations is there is not around condition 6: two sector-edge website, the most satisfied

   Wherein, I_i,IDFor base station the received signal quality website of website i, k (k ∈ Ω when sector ID launches signal_ID) it is sector Active stations in ID, I_k,IDFor base station sector ID launch signal time site k received signal quality,For base station at fan DistrictThe received signal quality of website j when launching signal,For sectorIn edge active stations,Represent Sector is passed through in base stationThe received signal quality of website m when launching signal, β represents the interference threshold to other active stations.