CN102811446B - Method and device for wireless relay node address selection - Google Patents
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Abstract
The invention discloses a method for wireless relay node address selection. The method includes that wireless relay nodes are installed at positions, which can meet requirements of bandwidth required for communication of all UE (user equipment) accessing to the wireless relay nodes, and where the maximum signal to interference and noise ratio (SINR) of channels between the wireless relay nodes and macro base stations accessed with the wireless relay nodes is achieved. The invention further discloses a device for wireless relay node address selection. By means of setting multiple measurement points, communication quality and bandwidth requirement of positions of different wireless relay nodes to be installed are detected, wireless link performance of an access side and a return side of the wireless relay nodes are taken into consideration sufficiently, positions occupying smallest system resources are selected for configuring the wireless relay nodes on the premise of guaranteeing service quality of the UE on the access side, and accordingly occupation of the system resources is reduced to the utmost extent on the premise of guaranteeing local coverage performance.
Description
Technical Field
The present invention relates to a location technology of a relay station, and in particular, to a location method and device of a wireless relay node.
Background
The next Generation mobile communication system is required to bring a service level close to the broadband internet to the UE, and the third Generation Partnership Project (3GPP, 3rd Generation Partnership Project) organization has started to establish a standard (LTE-a, long term Evolution Advanced) in order to meet the requirements of the fourth Generation (4G, 4th Generation) mobile communication established by the international telecommunication union, Radio communication Sector of ITU, and the 3GPP defines a requirement framework for LTE-a including supporting a downlink 1Gbps peak rate and an uplink 500Mbps peak rate which are greatly increased relative to LTE, lower UE plane and control plane delays, higher peak and average spectral efficiency, and higher cell edge throughput, etc.
Due to the scarcity of spectrum resources, LTE-a is likely to use a very high frequency band, for example, a 3.5GHz band, but the path loss caused by the high frequency is also larger, especially at the cell edge, which may result in poor system capacity and cell edge throughput. This can be solved by increasing the macro base station density, i.e., reducing the cell coverage radius, which significantly increases the cost of network operation. To reduce the operation cost, the radius of cell coverage is currently reduced by introducing wireless relay nodes. The wireless relay node has the main functions of expanding the coverage area of a cell, providing service signals for areas with serious shadow fading and covered dead angles in the cell, providing coverage of hot spot areas, indoor coverage and the like. The structure complexity of the wireless relay node is far lower than that of the base station, and the transmission power is small, so that a flexible deployment mode can be provided, high site selection and installation cost are avoided, and in addition, a return link of the wireless relay node is a wireless mode, and the cost of wired return is saved.
After the wireless relay node is introduced into the network, a new connection link is added: an access link (link between relay and relay UE) and a relay backhaul link (link between relay and macro base station). When a deployment position of a wireless relay node is selected, the relay node needs to cover a target area as much as possible, communication requirements of UE are guaranteed on an access side, a good backhaul link is guaranteed on a backhaul side, and the traffic of the UE on the relay access side can be borne. Therefore, the location of the wireless relay node is very important in network deployment. At present, the site selection mode of the wireless relay node is basically a mode combining theoretical calculation and experience, but considering the complex variability of the real environment, the influence of the complex geographic environment on the relay backhaul link of the wireless mode is very large, and the traditional site selection mode is not suitable for the site selection mode of the wireless relay node.
Disclosure of Invention
In view of the above, the present invention provides a method and an apparatus for locating a wireless relay node, which can determine an installation location for the wireless relay node, where the installation location meets the requirement of a coverage area and further meets the requirement of a communication bandwidth.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a method for selecting an address of a wireless relay node comprises the following steps:
the method comprises the step of taking a position which can meet the bandwidth required by all User Equipment (UE) accessing a wireless relay node during communication and has the maximum Signal to interference plus Noise Ratio (SINR) of a channel between the wireless relay node and a macro base station accessed by the wireless relay node as an installation position of the wireless relay node.
Preferably, the bandwidth required by all UEs accessing the wireless relay node during communication is:
determining the frequency spectrum efficiency of a channel between the UE and the wireless relay node on each measuring point; counting the probability of occurrence of the UE in the connection state on each measuring point;
determining the bandwidth B required by all UE communication at the position to be installedneedIn BneedWhen the bandwidth is less than or equal to the maximum bandwidth allocated by the wireless relay node, the bandwidth required by all UE accessed to the wireless relay node during communication can be met; wherein,wherein, tiIs the spectral efficiency, p, of the channel between the UE and the wireless relay node at the ith measurement pointiThe probability of occurrence of the UE in a connected state on the ith measuring point is shown, n is the total number of the measuring points, and c is the average communication speed requirement of the UE.
Preferably, the determining the spectrum efficiency of the channel between the UE and the wireless relay node at each measurement point includes:
determining the transmission rate of a channel between the UE and the wireless relay node on each measuring point, and taking the ratio of the transmission rate to the occupied bandwidth of the channel as the spectrum efficiency;
or, determining the signal-to-noise ratio of the channel between the UE and the wireless relay node, and searching the corresponding spectrum efficiency according to the corresponding relationship between the set signal-to-noise ratio and the spectrum efficiency.
Preferably, the statistics on the probability of occurrence of the UE in the connected state at each measurement point includes:
at each measurement point, the time length of the UE in the connection state in the set time period T is T1, and the probability of the UE in the connection state appearing is T1/T.
Preferably, the to-be-installed position of the wireless relay node is located at a central position of the to-be-configured area, and/or is located at a position where a wireless signal can cover the whole to-be-configured area.
An address selection device of a wireless relay node comprises:
the determining unit is configured to use a position where a maximum SINR of a channel between the wireless relay node and a macro base station to which the wireless relay node is accessed can satisfy a bandwidth required by all UEs accessing the wireless relay node during communication as an installation position of the wireless relay node.
Preferably, the determining unit is further configured to determine a spectral efficiency of a channel between the UE and the wireless relay node at each measurement point; counting the probability of occurrence of the UE in the connection state on each measuring point; and determining the bandwidth B required by all UE communication at the position to be installedneedIn BneedLess than or equal to in the wirelessWhen the maximum bandwidth allocated by the relay node is satisfied, the bandwidth required by all the UE accessed to the wireless relay node during communication is satisfied; wherein,wherein, tiIs the spectral efficiency, p, of the channel between the UE and the wireless relay node at the ith measurement pointiThe probability of occurrence of the UE in a connected state on the ith measuring point is shown, n is the total number of the measuring points, and c is the average communication speed requirement of the UE.
Preferably, the determination unit is further adapted to,
determining the transmission rate of a channel between the UE and the wireless relay node on each measuring point, and taking the ratio of the transmission rate to the occupied bandwidth of the channel as the spectrum efficiency;
or, determining the signal-to-noise ratio of the channel between the UE and the wireless relay node, and searching the corresponding spectrum efficiency according to the corresponding relationship between the set signal-to-noise ratio and the spectrum efficiency.
Preferably, the determination unit is further adapted to,
at each measurement point, the time length of the UE in the connection state in the set time period T is T1, and the probability of the UE in the connection state appearing is T1/T.
Preferably, the to-be-installed position of the wireless relay node is located at a central position of the to-be-configured area, and/or is located at a position where a wireless signal can cover the whole to-be-configured area.
In the invention, the communication quality and bandwidth requirements of positions to be installed of different wireless relay nodes are detected by setting a plurality of measuring points, the wireless link performance of an access side and a return side of the wireless relay nodes is fully considered, on the premise of ensuring the UE service quality of the access side, the position occupying the least system resources is selected to deploy the wireless relay nodes, and the occupation of the system resources is reduced as much as possible on the premise of ensuring the area coverage performance.
Drawings
FIG. 1 is a schematic diagram of an application scenario of the present invention;
fig. 2 is a flowchart of an address selection method for a wireless relay node according to an embodiment of the present invention;
fig. 3 is a flowchart of estimating a bandwidth required by a wireless relay node to meet a communication requirement of an access side according to an embodiment of the present invention.
Detailed Description
The basic idea of the invention is that the service quality of the UE served by the wireless relay node at the candidate position (the position to be installed) is estimated based on the measurement result of the measurement point in the target coverage range of the wireless relay node, the wireless relay node selects the serving macro base station based on the return link SINR, and the optimal position for deploying the wireless relay node is selected by comprehensively considering the service quality of the UE served by the wireless relay node at the access side and the system resources occupied at the return side.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings by way of examples.
Fig. 1 is a schematic view of an application scenario of the present invention, and as shown in fig. 1, it is assumed that an area a in the figure is located at an edge of a macro cell or has a building block, and a UE therein has poor signal quality for receiving the macro cell, and needs to improve communication quality through a wireless relay node. In the present invention, when determining the installation location of the wireless relay node in the area a, it is considered that the wireless relay node is installed at the center of the area a so as to cover the entire area a, or is installed at another location (e.g., another location offset from the center of the area a, such as a building with a high height) that can cover the entire area a. After the position of the wireless relay node to be installed is selected, a plurality of measuring points are selected around the wireless relay node, so that the signal quality of the access side of the wireless relay node is measured at the measuring points. Of course, the present invention also requires the related measurement of the access side and the backhaul side at the to-be-installed position of the wireless relay node.
Fig. 2 is a flowchart of an address selection method for a wireless relay node according to an embodiment of the present invention, and as shown in fig. 2, the address selection method for a wireless relay node of this example specifically includes the following steps:
step 201, selecting a measurement point in an area where a wireless relay node needs to be deployed;
in combination with the application scenario of fig. 1, an area in which the communication quality needs to be improved by deploying the wireless relay node is set as an area a in fig. 1, a plurality of measurement points are selected in the area a, the selection principle is that UE at positions where the measurement points are located can reach, the measurement points are distributed over the area a as much as possible and can comprehensively reflect the wireless environment in the area a, n measurement points are set, and M is used1，M2，...，MnAnd (4) showing. In the invention, the more the measuring points are dispersed, the more the number of the selected measuring points is, the better the measuring effect is achieved, and the better the installation position of the wireless relay node can be determined.
Step 202, selecting a position to be installed of a wireless relay node;
the specific method for selecting the position to be installed of the wireless relay node is as follows: selecting candidate positions capable of installing wireless relay nodes according to the specific environment in the area A, wherein the selection principle is that the candidate positions are as close to the center of the area A as possible or the coverage of the area A is guaranteed as much as possible, the candidate positions are set to be m, and R is used1，R2，...，RmAnd (4) showing.
In the present invention, there is no strict execution sequence between the above steps 201 and 202, and the positions to be installed of the wireless relay nodes may be first selected in the area a in fig. 1, and then the measurement points may be selected around the positions to be installed. In view of
Step 203, the measuring point measures the link performance of the access side of the wireless relay node, and estimates the bandwidth required by the wireless relay node to meet the communication requirement of the access side;
fig. 3 is a flowchart of estimating a bandwidth required by a wireless relay node to meet a communication requirement of an access side in the embodiment of the present invention, and as shown in fig. 3, estimating a bandwidth required by a wireless relay node to meet a communication requirement of an access side specifically includes the following steps:
step 2031, at R1，R2，...，RmSelecting an installation position for the wireless relay node, installing the wireless relay node on the selected installation position, and transmitting a signal on the full bandwidth, wherein the total bandwidth allocated to the wireless relay node by the communication system side is B;
step 2032, at all measuring points M1，M2，...，MnMeasuring the SINR of the wireless relay node signal received at the measuring point by using a measuring device, respectively noted as gamma1，γ2，...，γnAnd calculating the corresponding spectrum efficiency of the channel between the UE and the wireless relay node according to the measured SINR, and recording as t1，t2，...，tn. In the invention, the frequency spectrum efficiency is the ratio of the transmission rate of the channel to the occupied bandwidth. Specifically, the calculation of the spectral efficiency may be determined by using a modified shannon formula, or may be obtained by setting a correspondence table between a channel SINR value and the spectral efficiency, by looking up a table (the available spectral efficiency corresponding to different SINR values), and the like, which is not described in detail in the present invention; the above-mentioned measuring device may be a device similar to a mobile phone, but it is sufficient if it has a function of measuring a relevant parameter such as a link SINR.
Counting the probability of occurrence of the UE in a connection state at each measuring point, wherein the probability is p1，p2，...，pn. The statistical method may be to set a period of observation time T, where T may be a period of time within a working period if the area a in fig. 1 is an office area, T may be a period of time within a non-working period and a sleeping period if the area a is a residential area, and T may be a period of time with a large amount of weekend passenger traffic if the area a is a shopping mall, and the like. For a certain one of the measuring points,in the time period T, the length of time for which there is a UE in a connected state is T1, and at the measurement point, the probability that there is a UE in a connected state is p ═ T1/T. That is, the period of time during which the UE accesses the wireless relay node within a certain period of time is counted, and the ratio of the counted period of time to the whole period of time is calculated, that is, the probability that the UE in the connected state occurs is determined.
Step 2033, calculating the bandwidth B required by the wireless relay node on the access side to satisfy all UE communicationneedThe calculation formula is as follows:where c is the average communication rate requirement per UE.
Step 2034, the wireless relay node sequentially selects other positions to be installed, and determines the access side bandwidth required at different positions to be installed.
Step 204, the wireless relay node measures the performance of a backhaul link and selects a serving macro base station;
for a position to be mounted, if BneedIf the signal quality of the macro base station nearby the wireless relay node is measured at the position less than or equal to B, selecting the macro base station with the best SINR value as a serving macro base station at the return side, wherein the SINR value is represented by β, and if B is greater than or equal to B, selecting the macro base station with the best SINR value as the serving macro base station at the return sideneedIf > B, the position to be installed is abandoned.
And step 205, selecting a wireless relay node deployment position according to the estimated bandwidth of the access side and the performance of the backhaul link.
The wireless relay node is installed by testing its location to be installed and selecting the location to be installed where the measured backhaul link β value is the largestneedAnd selecting β the position to be installed with the largest value from the positions to be installed of B and B for installing the wireless relay node.
The invention detects the communication quality and bandwidth requirement of the positions to be installed of different wireless relay nodes by setting a plurality of measuring points, fully considers the wireless link performance of the access side and the return side of the wireless relay nodes, selects the position occupying the least system resources to deploy the wireless relay nodes on the premise of ensuring the UE service quality of the access side, and occupies the least system resources on the premise of ensuring the area coverage performance.
The invention also discloses an address selection device of the wireless relay node, which comprises the following components:
the determining unit is configured to use a position where a maximum SINR of a channel between the wireless relay node and a macro base station to which the wireless relay node is accessed can satisfy a bandwidth required by all UEs accessing the wireless relay node during communication as an installation position of the wireless relay node.
The determining unit is further configured to determine a spectrum efficiency of a channel between the UE and the wireless relay node at each measurement point; counting the probability of occurrence of the UE in the connection state on each measuring point; and determining the bandwidth B required by all UE communication at the position to be installedneedIn BneedWhen the bandwidth is less than or equal to the maximum bandwidth allocated by the wireless relay node, the bandwidth required by all the UE accessed to the wireless relay node during communication is met; wherein,wherein, tiIs the spectral efficiency, p, of the channel between the UE and the wireless relay node at the ith measurement pointiThe probability of occurrence of the UE in a connected state on the ith measuring point is shown, n is the total number of the measuring points, and c is the average communication speed requirement of the UE.
The above-mentioned determination unit is further adapted to,
determining the transmission rate of a channel between the UE and the wireless relay node on each measuring point, and taking the ratio of the transmission rate to the occupied bandwidth of the channel as the spectrum efficiency;
or, determining the signal-to-noise ratio of the channel between the UE and the wireless relay node, and searching the corresponding spectrum efficiency according to the corresponding relationship between the set signal-to-noise ratio and the spectrum efficiency.
The above-mentioned determination unit is further adapted to,
at each measurement point, the time length of the UE in the connection state in the set time period T is T1, and the probability of the UE in the connection state appearing is T1/T.
The position to be installed of the wireless relay node is located at the center of the area to be configured, and/or is located at a position where a wireless signal can cover the whole area to be configured.
The determining unit of the addressing device of the wireless relay node is specifically realized by a processor with data processing capacity and corresponding software, or is realized by combining a measuring unit with a corresponding measuring function. The specific function and implementation means of the determining unit can be understood by referring to the related description of the address selection method of the wireless relay node of the present invention.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.
Claims (8)
1. A method for selecting an address of a wireless relay node, the method comprising:
taking the position which can meet the bandwidth required by all User Equipment (UE) accessed to the wireless relay node during communication and has the maximum signal-to-noise ratio (SINR) of a channel between the wireless relay node and a macro base station accessed to the wireless relay node as the installation position of the wireless relay node;
before determining the installation position of the wireless relay node, setting a measuring point in an area where the wireless relay node needs to be deployed; or,
after determining an installation location of the wireless relay node, setting measurement points around the determined installation location;
the bandwidth required by all the UEs accessing the wireless relay node during communication is as follows:
determining the frequency spectrum efficiency of a channel between the UE and the wireless relay node on each measuring point; counting the probability of occurrence of the UE in the connection state on each measuring point;
determining the bandwidth B required by all UE communication at the position to be installedneedIn BneedWhen the bandwidth is less than or equal to the maximum bandwidth allocated by the wireless relay node, the bandwidth required by all UE accessed to the wireless relay node during communication can be met; wherein,wherein, tiIs the spectral efficiency, p, of the channel between the UE and the wireless relay node at the ith measurement pointiThe probability of occurrence of the UE in a connected state on the ith measuring point is shown, n is the total number of the measuring points, and c is the average communication speed requirement of the UE.
2. The method of claim 1, wherein determining the spectral efficiency of the channel between the UE and the wireless relay node at each measurement point is:
determining the transmission rate of a channel between the UE and the wireless relay node on each measuring point, and taking the ratio of the transmission rate to the occupied bandwidth of the channel as the spectrum efficiency;
or, determining the signal-to-noise ratio of the channel between the UE and the wireless relay node, and searching the corresponding spectrum efficiency according to the corresponding relationship between the set signal-to-noise ratio and the spectrum efficiency.
3. The method according to claim 1, wherein the statistics of the probability of the UE in the connected state at each measurement point comprises:
at each measurement point, the time length of the UE in the connection state in the set time period T is T1, and the probability of the UE in the connection state appearing is T1/T.
4. The method according to claim 1, wherein the location to be installed of the wireless relay node is located at a central position of the area to be configured, and/or is located at a position where wireless signals can cover the entire area to be configured.
5. An apparatus for addressing a wireless relay node, the apparatus comprising:
a determining unit, configured to use a location where a bandwidth required by all UEs accessing a wireless relay node during communication is satisfied and an SINR of a channel between the wireless relay node and a macro base station to which the wireless relay node is accessed is the largest as an installation location of the wireless relay node;
the determining unit is further configured to set a measurement point in an area where the wireless relay node needs to be deployed before determining an installation location of the wireless relay node; or,
after determining an installation location of the wireless relay node, setting measurement points around the determined installation location;
the determining unit is further configured to determine a spectral efficiency of a channel between the UE and the wireless relay node at each measurement point; counting the probability of occurrence of the UE in the connection state on each measuring point; and determining the bandwidth B required by all UE communication at the position to be installedneedIn BneedWhen the bandwidth is less than or equal to the maximum bandwidth allocated by the wireless relay node, the bandwidth required by all the UE accessed to the wireless relay node during communication is met; wherein,wherein, tiIs the spectral efficiency, p, of the channel between the UE and the wireless relay node at the ith measurement pointiThe probability of occurrence of the UE in a connected state on the ith measuring point is shown, n is the total number of the measuring points, and c is the average communication speed requirement of the UE.
6. The apparatus of claim 5, wherein the determination unit is further configured to,
determining the transmission rate of a channel between the UE and the wireless relay node on each measuring point, and taking the ratio of the transmission rate to the occupied bandwidth of the channel as the spectrum efficiency;
or, determining the signal-to-noise ratio of the channel between the UE and the wireless relay node, and searching the corresponding spectrum efficiency according to the corresponding relationship between the set signal-to-noise ratio and the spectrum efficiency.
7. The apparatus of claim 5, wherein the determination unit is further configured to,
at each measurement point, the time length of the UE in the connection state in the set time period T is T1, and the probability of the UE in the connection state appearing is T1/T.
8. The apparatus according to claim 5, wherein the location to be installed of the wireless relay node is located at a central position of the area to be configured, and/or is located at a position where wireless signals can cover the entire area to be configured.
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Families Citing this family (12)
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|---|---|---|---|---|
| CN103916886B (en) * | 2012-12-30 | 2017-08-04 | 重庆重邮信科通信技术有限公司 | Virtual measuring method, system, anolog base station and test terminal |
| US9461729B2 (en) | 2013-12-13 | 2016-10-04 | Huawei Technologies Co., Ltd. | Software-defined network infrastructure having virtual range extenders |
| CN106162817A (en) * | 2015-04-03 | 2016-11-23 | 北京佰才邦技术有限公司 | The method for building up of wireless backhaul links, device and communication system |
| CN105554842B (en) * | 2015-12-08 | 2018-10-12 | 深圳大学 | A kind of method for searching and hunting system of more mobile relay optimal communications position |
| CN105491637B (en) * | 2015-12-08 | 2018-08-24 | 深圳大学 | Mobile relay best relay position searching method based on fixed step size and system |
| CN105554841B (en) * | 2015-12-08 | 2018-10-12 | 深圳大学 | A kind of best relay position searching method and system based on step-length threshold mechanism |
| CN105554840B (en) * | 2015-12-08 | 2018-10-12 | 深圳大学 | The method for searching and system of best relay position based on Contrary compensation mechanism |
| CN105828325B (en) * | 2016-05-24 | 2019-01-08 | 中国联合网络通信集团有限公司 | The location determining method and system of newly-increased relay station |
| CN106507377B (en) * | 2016-10-25 | 2019-04-05 | 北京航空航天大学 | A kind of optimal site selecting method of communication network relay |
| CN110326322A (en) * | 2017-03-13 | 2019-10-11 | 华为技术有限公司 | Device and method for the deployment of nomadic relay node |
| TW201919403A (en) * | 2017-11-14 | 2019-05-16 | 移動商務股份有限公司 | Streaming video management system, method, and computer program product thereof |
| CN116491220A (en) * | 2020-11-06 | 2023-07-25 | 高通股份有限公司 | Relay selection based on early measurements in L2 relay |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101420702A (en) * | 2008-10-30 | 2009-04-29 | 中兴通讯股份有限公司 | Relay system deployment method and relay system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100786125B1 (en) * | 2006-08-30 | 2007-12-18 | 삼성전자주식회사 | Method and device for selecting service path in relay communication system |
-
2011
- 2011-05-30 CN CN201110142818.3A patent/CN102811446B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101420702A (en) * | 2008-10-30 | 2009-04-29 | 中兴通讯股份有限公司 | Relay system deployment method and relay system |
Non-Patent Citations (2)
| Title |
|---|
| Performance Enhancement in LTE-Advanced Relay Networks via Relay Site Planning;Ömer Bulakci等;《IEEE》;20101231;第II-III节 * |
| 多跳中继网络规划中功耗和系统吞吐量的研究;周立峰;《中国优秀硕士学位论文全文数据库 信息科技辑》;20100815;第4章 * |
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