CN101605374B - Transmission method of interference indication message in wireless communication system and system - Google Patents
Transmission method of interference indication message in wireless communication system and system Download PDFInfo
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- CN101605374B CN101605374B CN 200810110684 CN200810110684A CN101605374B CN 101605374 B CN101605374 B CN 101605374B CN 200810110684 CN200810110684 CN 200810110684 CN 200810110684 A CN200810110684 A CN 200810110684A CN 101605374 B CN101605374 B CN 101605374B
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Abstract
The invention discloses a transmission method of an interference indication message in a wireless communication system and a transmission system of the interference indication message, wherein the method comprises the following steps: under the condition that a base station is in uplink interference and/or downlink interference, the base station sends the interference indication message used for expressing the condition that the base station is in the uplink interference and/or the downlink interference; and a receiver which successfully receives the interference indication message sends the interference indication message to other base stations which are synchronous with the base station. By using the invention, the interference indication message can be reliably and fast transferred to other base stations from the base station in the uplink interference and/or the downlink interference.
Description
Technical field
The present invention relates to the communications field, and especially, relate to a kind of transmission system of transmission method and interference indication message of interference indication message in wireless communication system.
Background technology
In the wireless communication system, the base station is to show the equipment that terminal provides service, and the base station communicates by uplink downlink and terminal.Wherein, descending (forward direction) refers to that the base station arrives the direction of terminal, and up (oppositely) refers to the direction of terminal to base station.And a plurality of terminals can send data by up link to the base station simultaneously, also can be by down link simultaneously from the base station receive data.
In the data transmission system that adopts base station scheduling control, the dispatching distribution of all resources is undertaken by the base station usually in the system, employed running time-frequency resource etc. when employed running time-frequency resource and distributing terminals were carried out uplink when for example, base station assigns was carried out downlink transfer.
When the terminal of communicating by letter with different base station is carried out transmitting uplink data, the up link of these terminals is non-orthogonal each other, therefore, a terminal may produce uplink interference to the terminal under the adjacent base station of its serving BS, and this terminal also may be subject to the uplink interference from terminal under the adjacent base station of its serving BS simultaneously.
As shown in Figure 1, terminal T1 101 has caused uplink interference to base station BS _ B 104 when transmitting to base station BS _ A 103, and terminal T2 102 has caused uplink interference to base station BS _ A 103 when transmitting to base station BS _ B 104.
Generally, can carry out data, signalling by backbone network (backbone) between the base station, but on backbone when data and/or signaling, the time delay of transmission is uncontrollable, this is to the signaling of delay sensitive, and especially the downlink or uplink interference indication message is unacceptable.
The reduction presence of intercell interference is an important goal of cellular system design on the impact of systematic function, if minizone serious interference, the transmittability of power system capacity, particularly Cell Edge User be will greatly reduce, thereby the covering power of system and user's impression had influence on.And efficient fast transport interference indication message between the base station how is very crucial to alleviate the downlink or uplink presence of intercell interference on the impact of whole wireless communication system ascending performance.Yet not yet proposing at present to solve interference indication message can't be rationally, the technical scheme of the problem of transmitting.
Summary of the invention
Consider the problems referred to above and make the present invention, for this reason, main purpose of the present invention is to provide a kind of transmission plan of interference indication message in wireless communication system and the transmission system of interference message, to solve the problem that interference indication message in the correlation technique can not fast transport.
A kind of transmission method of interference indication message in wireless communication system is provided according to an aspect of the present invention.
The method comprises: in the situation that the base station is subject to uplink interference and/or descending interference, the base station sends and is used for the interference indication message that the expression base station is subject to the situation of uplink interference and/or descending interference; The recipient that success receives interference indication message is sent to other base station synchronous with it with interference indication message.
Wherein, the recipient can be terminal and/or relay station.
On the one hand, in the situation that other base station is that base station, a recipient are a plurality of terminals and/or relay station, the predetermined same or different running time-frequency resource of a plurality of terminals and/or relay station utilization sends interference indication message to other base station.
On the other hand, be a terminal or a relay station in the situation that other base station is a plurality of base stations, recipient, it is one of following that terminal or relay station send processing from interference indication messages to a plurality of base stations is specially:
Terminal or relay station utilize identical predetermined running time-frequency resource to send interference indication message to a plurality of base stations;
Terminal or relay station utilize different predetermined running time-frequency resources to send interference indication message to a plurality of base stations;
Terminal or relay station utilize identical running time-frequency resource to send interference indication message to the part base station in a plurality of base stations, and utilize different running time-frequency resources to send interference indication message to another part base station in a plurality of base stations.
In addition, in the situation that other base station is that a plurality of base stations, recipient are a plurality of terminals and/or relay station, a plurality of terminals and/or relay station all utilize same predetermined running time-frequency resource to send interference indication message to a plurality of base stations respectively.
In addition, in the situation that other base station is that a plurality of base stations, recipient are a plurality of terminals and/or relay station, in a plurality of terminals and/or the relay station each utilizes different predetermined running time-frequency resources to send interference indication message to a plurality of base stations, and, when the same base station in a plurality of base stations sent interference indication message, a plurality of terminals and/or relay station adopted the running time-frequency resource that differs from one another to send.
In addition, in the situation that other base station is that a plurality of base stations, recipient are a plurality of terminals and/or relay station, in a plurality of terminals and/or the relay station each utilizes different predetermined running time-frequency resources to send interference indication message to a plurality of base stations, and, when the same base station in a plurality of base stations sent interference indication message, a plurality of terminals and/or relay station adopted mutually the same running time-frequency resource to send.
In addition, in the situation that other base station is that a plurality of base stations, recipient are a plurality of terminals and/or relay station, in a plurality of terminals and/or the relay station each all utilizes identical predetermined running time-frequency resource to send interference indication message to the part base station in a plurality of base stations, and utilize different running time-frequency resources to send interference indication message to another part base station in a plurality of base stations, wherein, when the same base station in a plurality of base stations sent interference indication message, a plurality of terminals and/or relay station adopted the running time-frequency resource that is same to each other or different to each other to send.
Again on the one hand, in the situation that other base station is that a plurality of base stations, recipient are a plurality of terminals and/or relay station, the predetermined same running time-frequency resource of part terminal in a plurality of terminals and/or the relay station and/or relay station utilization sends interference indication message to other base station, and another part terminal among the recipient and/or relay station utilize different running time-frequency resources to send interference indication message to other base station.
Preferably, the recipient can further utilize the spread spectrum code sequence of the base station that is subject to uplink interference and/or descending interference to send interference indication message.Wherein, the mutually orthogonal or accurate quadrature of the spread spectrum code sequence of the spread spectrum code sequence of utilization and other base station.
In addition, with the synchronous base station of recipient be: the base station that the received side success of the synchronizing channel of its transmission and/or broadcast channel receives; Perhaps set up the base station of synchronization with the recipient.
After the recipient received interference indication message, the method can further include: the situation of the uplink interference of carrying in the interference indication message of recipient according to reception and/or the situation of descending interference and/or recipient's itself power consumption situation determines whether send interference indication message to other base station.
In addition, interference indication message carries the uplink interference of a plurality of sub-bands that consist of the whole working band of wireless communication system and/or the situation of descending annoyance level, perhaps carries the uplink interference of the whole working band of formation wireless communication system and/or the situation of descending annoyance level.
Alternatively, can predetermined period or sends interference indication message according to predetermined interference incident to the recipient in the base station.
Alternatively, the base station can analog form or digital form send interference indication message to the recipient.
Alternatively, the base station can send interference indication message by superframe, and wherein, the base station sends interference indication message by superframe, wherein, the base station in the superframe head of superframe and/or the position in the superframe outside the superframe head carry interference indication message.
Alternatively, the base station can clean culture and/or the mode of multicast send interference indication message.
According to a further aspect in the invention, provide a kind of transmission method of interference indication message in wireless communication system, this wireless communication system comprises as a plurality of terminals of recipient and/or relay station and with the recipient sets up synchronous a plurality of base stations.
The method comprises: the base station that is subject to uplink interference and/or descending interference in a plurality of base stations sends and is used for the interference indication message that the expression base station is subject to the situation of uplink interference and/or descending interference;
Success receives the predetermined same running time-frequency resource of terminal among the recipient of interference indication message and/or relay station utilization interference indication message is sent to other base station in a plurality of base stations; Perhaps the part terminal among the recipient and/or relay station utilize identical running time-frequency resource to send interference indication message to other base station, and another part terminal among the recipient and/or relay station utilize different running time-frequency resources to send interference indication message to other base station; Perhaps the recipient utilizes identical running time-frequency resource to send interference indication message to the part base station in other base station, and utilizes different resources to send interference indication message to another part base station in other base station.
A kind of transmission system of interference indication message is provided according to a further aspect in the invention.
This system comprises: a plurality of base stations, be used for carrying out synchronously with the recipient, and wherein, the base station transmission that is subject to uplink interference and/or descending interference carries the interference indication message of the situation of uplink interference that the base station is subject to and/or descending interference; The recipient be used for to receive interference indication message, and interference indication message is sent to other base station in a plurality of base stations.
By technique scheme of the present invention, can be reliably, rapidly with interference indication message from the base-station transmission that is subject to uplink interference to other base station.
Description of drawings
Accompanying drawing described herein is used to provide a further understanding of the present invention, consists of the application's a part, and illustrative examples of the present invention and explanation thereof are used for explaining the present invention, do not consist of improper restriction of the present invention.In the accompanying drawings:
Fig. 1 is the schematic diagram of the uplink interference that occurs in the correlation technique;
Fig. 2 is the flow chart according to the transmission method of the interference indication message in wireless communication system of the inventive method embodiment;
Fig. 3 is the process chart that generates and sends the presence of intercell interference Indication message according to base station in the method for the inventive method embodiment;
Fig. 4 is the schematic diagram according to the instantiation of the employed frame structure of transmission interference indication message in the method for the inventive method embodiment; And
Fig. 5 be according in the method for the inventive method embodiment and the terminal of a plurality of base station communications or RS receive after the message of the uplink interference situation that description base station A that base station A sends is subject at present between this message send to the process chart of other base station that communicates with;
Fig. 6 generates and sends presence of intercell interference Indication message and terminal or RS receives and with the process chart of other base station of information notification according to base station in the method for the inventive method embodiment;
Fig. 7 a is the schematic diagram that a plurality of terminals send interference indication message in the method according to the inventive method embodiment to a base station;
Fig. 7 b is the schematic diagram that a plurality of relay stations send interference indication message in the method according to the inventive method embodiment to a base station;
Fig. 7 c is the schematic diagram that sends interference indication message according to terminal and relay station in the method for the inventive method embodiment to a base station;
Fig. 8 a is the schematic diagram that a plurality of terminals send interference indication messages in the method according to the inventive method embodiment to a plurality of base stations;
Fig. 8 b is the schematic diagram that a plurality of relay stations send interference indication messages in the method according to the inventive method embodiment to a plurality of base stations;
Fig. 8 c is the schematic diagram that sends interference indication message according to terminal and relay station in the method for the inventive method embodiment to a plurality of base stations.
Embodiment
Embodiment of the method
In the present embodiment, provide a kind of transmission method of interference indication message in wireless communication system, wherein, the message relevant with disturbing control can be transmitted by terminal or the relay station (Relay Station, RS) with a plurality of base station communications.
And, described wireless communication system can adopt OFDM (Orthogonal Frequency Division Multiple Access herein, OFDMA), time division multiple access (Time Division Multiple Access, TDMA), frequency division multiple access (FrequencyDivision Multiple Access, FDMA), code division multiple access (Code Division MultipleAccess, a kind of or its combination of access way such as CDMA), can adopt OFDM (Orthogonal Frequency Division Multiplexing, OFDM), frequency division multiplexing (Frequency Division Multiplexing, FDM), time division multiplexing (Time DivisionMultiplexing, TDM), code division multiplexing (Code Division Multiplexing, a kind of or its combination of data-reusing mode such as CDM), and the working band of whole wireless communication system is divided into several subbands according to certain rule.
A kind of transmission method of interference indication message in wireless communication system is provided in the present embodiment.
As shown in Figure 2, transmission method according to the interference indication message in wireless communication system of the present embodiment comprises: step S202, in the situation that the base station is subject to uplink interference and/or descending interference, the base station sends and is used for the interference indication message that the expression base station is subject to the situation of uplink interference and/or descending interference; Step S204, the recipient who successfully receives interference indication message is sent to other base station synchronous with it with interference indication message.
Wherein, the recipient can be terminal and/or RS.
On the one hand, in the situation that other base station is that base station, a recipient are a plurality of terminals and/or RS, a plurality of terminals and/or RS utilize predetermined same or different running time-frequency resource to send interference indication message to other base station.
On the other hand, be a terminal or a RS in the situation that other base station is a plurality of base stations, recipient, it is one of following that terminal or RS send processing from interference indication messages to a plurality of base stations is specially:
Terminal or RS utilize identical predetermined running time-frequency resource to send interference indication message to a plurality of base stations;
Terminal or RS utilize different predetermined running time-frequency resources to send interference indication message to a plurality of base stations;
Terminal or RS utilize identical running time-frequency resource to send interference indication message to the part base station in a plurality of base stations, and utilize different running time-frequency resources to send interference indication message to another part base station in a plurality of base stations.
In addition, in the situation that other base station is that a plurality of base stations, recipient are a plurality of terminals and/or RS, a plurality of terminals and/or RS all utilize same predetermined running time-frequency resource to send interference indication message to a plurality of base stations respectively.
In addition, in the situation that other base station is that a plurality of base stations, recipient are a plurality of terminals and/or RS, among a plurality of terminals and/or the RS each utilizes different predetermined running time-frequency resources to send interference indication message to a plurality of base stations, and, when the same base station in a plurality of base stations sent interference indication message, a plurality of terminals and/or RS adopted the running time-frequency resource that differs from one another to send.
In addition, in the situation that other base station is that a plurality of base stations, recipient are a plurality of terminals and/or RS, among a plurality of terminals and/or the RS each utilizes different predetermined running time-frequency resources to send interference indication message to a plurality of base stations, and, when the same base station in a plurality of base stations sent interference indication message, a plurality of terminals and/or RS adopted mutually the same running time-frequency resource to send.
In addition, in the situation that other base station is that a plurality of base stations, recipient are a plurality of terminals and/or RS, among a plurality of terminals and/or the RS each all utilizes identical predetermined running time-frequency resource to send interference indication message to the part base station in a plurality of base stations, and utilize different running time-frequency resources to send interference indication message to another part base station in a plurality of base stations, wherein, when the same base station in a plurality of base stations sent interference indication message, a plurality of terminals and/or RS adopted the running time-frequency resource that is same to each other or different to each other to send.
Again on the one hand, in the situation that other base station is that a plurality of base stations, recipient are a plurality of terminals and/or RS, part terminal among a plurality of terminals and/or the RS and/or RS utilize predetermined same running time-frequency resource to send interference indication message to other base station, and another part terminal among the recipient and/or RS utilize different running time-frequency resources to send interference indication message to other base station.
Particularly, the base station of supposing to be subject to uplink interference is base station A, above-mentioned other base station is base station B, if a plurality of terminals are arranged can both communicate by letter with base station B, then these terminals can utilize different running time-frequency resources to send the identical message (that is, interference indication message) comprise the uplink interference situation that base station A is subject to base station B; If there are a plurality of RS to communicate by letter with base station B, then these RS can utilize different running time-frequency resources to send the identical message comprise the uplink interference situation that base station A is subject to base station B; If have a plurality of terminals or RS to communicate by letter with base station B, then these terminals or RS can utilize different running time-frequency resources to send the identical message comprise the uplink interference situation that base station A is subject to base station B.Wherein, the position of above-mentioned running time-frequency resource can be consulted to determine by base station A and base station B.
In addition, the base station of supposing to be subject to uplink interference is base station A, above-mentioned other base station is base station B, if there are a plurality of terminals to communicate by letter with base station B, then these terminals can utilize identical running time-frequency resource to send the identical message comprise the uplink interference situation that base station A is subject to base station B; If there are a plurality of RS to communicate by letter with base station B, then these RS can utilize identical running time-frequency resource to send the identical message comprise the uplink interference situation that base station A is subject to base station B; If have a plurality of terminals or RS to communicate by letter with base station B, then these terminals or RS can utilize identical running time-frequency resource to send the identical message comprise the uplink interference situation that base station A is subject to base station B.Wherein, the position of this running time-frequency resource can be consulted to determine by base station A and base station B.
Further, if having a plurality of terminals can both with base station B, base station C ..., base station X communication, then these terminals can utilize identical running time-frequency resource to base station B, base station C ..., base station X sends the identical message that comprises the uplink interference situation that base station A is subject to; If have a plurality of RS can both with base station B, base station C ..., base station X communication, then these RS can utilize identical running time-frequency resource to base station B, base station C ..., base station X sends the identical message that comprises the uplink interference situation that base station A is subject to; If have a plurality of terminals or RS can both with base station B, base station C ..., base station X communication, then these terminals or RS can utilize identical running time-frequency resource to base station B, base station C ..., base station X sends the identical message that comprises the uplink interference situation that base station A is subject to.
Preferably, base station A, base station B in the above-mentioned situation, base station C ..., base station X has different orthogonal or quasi-orthogonal spread spectrum code sequences, a plurality of terminals or RS by spreading code corresponding to base station A to the information of the uplink interference situation that comprises base station A and be subject to carry out behind the spread spectrum the time-frequency region of distributing send to base station B, base station C ..., base station X.The position of above-mentioned running time-frequency resource can by base station A, base station B, base station C ..., base station X consults to determine.
When the recipient uses different running time-frequency resources to carry out the interference indication message transmission, if have a plurality of terminals can both with base station B, base station C ..., base station X communication, then these terminals can utilize different running time-frequency resources to base station B, base station C ..., base station X sends the message that comprises the uplink interference situation that base station A is subject to; If have a plurality of RS can both with base station B, base station C ..., base station X communication, then these RS can utilize different running time-frequency resources to base station B, base station C ..., base station X sends the message that comprises the uplink interference situation that base station A is subject to; If have a plurality of terminals or RS can both with base station B, base station C ..., base station X communication, then these terminals or RS can utilize different running time-frequency resources to base station B, base station C ..., base station X sends the identical message that comprises the uplink interference situation that base station A is subject to.Wherein, the position of above-mentioned running time-frequency resource can by base station A, base station B, base station C ..., base station X consults to determine.
Use identical or different running time-frequency resource that the concrete condition that interference indication message is sent to one or more base stations (removing the base station that is subjected to uplink interference) will be described in conjunction with Fig. 7 a to 7c and Fig. 8 a to 8c in the back about terminal and/or RS.
Preferably, the recipient can further utilize the spread spectrum code sequence of the base station that is subject to uplink interference and/or descending interference to send interference indication message.Wherein, the mutually orthogonal or accurate quadrature of the spread spectrum code sequence of the spread spectrum code sequence of utilization and other base station.
Alternatively, can predetermined period or sends interference indication message according to predetermined interference incident to the recipient in the base station.Particularly, the base station can send every fixed time period the message of the uplink interference situation that oneself is subject at present to the terminal that communicates with or RS, and for example, this cycle can be the numerical value such as 20ms, 5ms; And the base station can also define dependent event and trigger base station A sends the uplink interference situation that oneself is subject at present to the terminal that communicates with or RS message, and for example, base station A is subject to suddenly very large uplink interference.
In addition, with the synchronous base station of recipient be: the base station that the received side success of the synchronizing channel of its transmission and/or broadcast channel receives; Perhaps set up the base station of synchronization with the recipient.
After the recipient received interference indication message, the method can further include: the situation of the uplink interference of carrying in the interference indication message of recipient according to reception and/or the situation of descending interference and/or recipient's itself power consumption situation determines whether send interference indication message to other base station.
In addition, interference indication message carries the uplink interference of a plurality of sub-bands that consist of the whole working band of wireless communication system and/or the situation of descending annoyance level, perhaps carries the uplink interference of the whole working band of formation wireless communication system and/or the situation of descending annoyance level.
Alternatively, the base station can analog form or digital form send interference indication message to the recipient.
Preferably, the base station sends interference indication message with analog form (amplitude that adjustment transmits or phase place or frequency) or digital form (being quantified as several bits) to the recipient.
Preferably, interference indication message carries the situation of the uplink interference of a plurality of sub-bands that consist of the whole working band of wireless communication system, perhaps carries the situation of the uplink interference that consists of the whole working band of wireless communication system.
Preferably, when wireless communication system adopts time span to be superframe (SuperFrame) structure of 20ms, the original position of each superframe is the superframe head, then base station A can pass through superframe head (SuperFrame Header, SFH) and sends the message of the uplink interference situation that oneself is subject at present and/or send the message (mode that sends interference indication message by superframe will be described in detail with reference to Fig. 4 in the back) of the uplink interference situation that oneself is subject at present by the zone outside the superframe head to the terminal that communicates with or RS to the terminal that communicates with or RS.That is to say, this message can be carried in the position outside superframe head and the superframe head not only one, and both can carry this message simultaneously.
Alternatively, the base station can clean culture and/or the mode of multicast send interference indication message.
Fig. 3 shows the process that the base station generates and sends the presence of intercell interference Indication message.As shown in Figure 3, specifically comprise following processing:
Step S302, base station A measures on each subband the uplink interference situation numerical value Iai (i=1...N from other base station, N is the subband number), these uplink interference numerical value obtain the disturbed condition numerical value AIa of reflection base station A on whole working band by arithmetic average (or geometric average or harmonic average etc.) mode;
Step S304, the AIa after base station A will quantize or the uplink interference value on several subbands send to terminal or the RS that communicates with by down channel.
The frame structure that Fig. 4 shows the present invention can be adopted when transmitting interference indication message.As shown in Figure 4, each length is that the frame (Frame) that the superframe (SuperFrame) of 20ms is 5ms by four length consists of, the frame of each 5ms by several subframes (Sub Frame) (generally, the quantity of subframe is 8 in frame) consist of, each superframe comprises a superframe head (SuperFrame Header, SFH) and is used for the contents such as transfer synchronous channel, broadcast channel.
Based on frame structure shown in Figure 4, the AIa after quantizing in above-mentioned steps S304 or the uplink interference situation on several subbands can be put in the broadcast channel in the superframe head to be transmitted, and the structure of message can be shown in table 1 or table 2 particularly:
| Syntax | Notes |
| { | |
| …… | |
| Superframe index | The Hyper Frame Number that represents this superframe |
| …… | |
| The uplink interference indication | The uplink interference situation that the base station of this superframe head of expression transmission is subject at present, AIa value after for example quantizing or the uplink interference situation on several subbands, for example represent with a bit, the uplink interference that bit ' 1 this base station of expression is subject to surpasses certain thresholding, and the uplink interference that bit ' 0 this base station of expression is subject to is lighter |
| …… | |
| } |
Table 1, broadcast message format in the superframe head
| Syntax | Notes |
| { | |
| …… | |
| Superframe index | The Hyper Frame Number that represents this superframe |
| …… | |
| Descending interference indication | The descending disturbed condition that the base station of this superframe head of expression transmission is subject at present, AIa value after for example quantizing or the descending disturbed condition on several subbands, for example represent with a bit, bit ' 1 ' represents that the descending interference that this base station is subject to surpasses certain thresholding, and the descending interference that bit ' 0 this base station of expression is subject to is lighter |
| The uplink interference indication | The uplink interference situation that the base station of this superframe head of expression transmission is subject at present, AIa value after for example quantizing or the uplink interference situation on several subbands, for example represent with a bit, bit ' 1 ' represents that the uplink interference that this base station is subject to surpasses certain thresholding, and the uplink interference that bit ' 0 this base station of expression is subject to is lighter |
| …… | |
| } |
Table 2, broadcast message format in the superframe head
Based on the frame structure that Fig. 4 describes, transmit in the zone that the AIa after quantizing among the step S304 among Fig. 3 or the uplink interference situation on several subbands also can be put into outside the superframe head, and at this moment, the structure of message can be shown in table 3 or table 4.
| Syntax | Notes |
| { | |
| Message index | The type that represents this control message |
| The uplink interference indication | The uplink interference situation that the base station of this control message of expression transmission is subject at present, AIa value after for example quantizing or the uplink interference situation on several subbands, for example represent with a bit, bit ' 1 ' represents that the uplink interference that this base station is subject to surpasses certain thresholding, and the uplink interference that bit ' 0 this base station of expression is subject to is lighter |
| …… | |
| } |
Table 3, interference indication message form in the frame
| Syntax | Notes |
| { | |
| Message index | The type that represents this control message |
| Descending interference indication | The descending disturbed condition that the base station of this control message of expression transmission is subject at present, AIa value after for example quantizing or the descending disturbed condition on several subbands, for example represent with a bit, bit ' 1 ' represents that the descending interference that this base station is subject to surpasses certain thresholding, and bit ' 0 ' represents that the descending interference that this base station is subject to is lighter |
| The uplink interference indication | The uplink interference situation that the base station of this control message of expression transmission is subject at present, AIa value after for example quantizing or the uplink interference situation on several subbands, for example represent with a bit, bit ' 1 ' represents that the uplink interference that this base station is subject to surpasses certain thresholding, and bit ' 0 ' represents that the uplink interference that this base station is subject to is lighter |
| …… | |
| } |
Table 4, interference indication message form in the frame
Fig. 5 shows terminal (base station number＞1 with a plurality of base station communications, must comprise base station A) or RS (base station number＞1, must comprise base station A) receive the message of the uplink interference situation that description base station A that base station A sends is subject at present after, the message that will comprise the uplink interference situation that base station A is subject to sends to the process of other base station (not comprising base station A) that communicates with.As shown in Figure 5, specifically comprise following processing: step S502 module, terminal (base station number＞1 with a plurality of base station communications, must comprise base station A) or RS (base station number＞1 must comprise base station A) successfully receive the message of the uplink interference situation that description base station A that base station A sends is subject at present; Step S504, these terminals or RS will comprise the message of describing the uplink interference situation that base station A is subject at present by up channel and send to the base station that communicates with except the A of base station.
Below by the step S504 that further describes among Fig. 5.
If have a plurality of terminals or RS not only can communicate by letter with base station A, also can communicate by letter with base station B, these terminals or RS obtain to send the positional information of describing the required common uplink running time-frequency resource of base station A uplink interference situation from base station A or base station B simultaneously, these terminals or RS send identical content to base station B in this common uplink running time-frequency resource position, can obtain macro diversity when thereby base station B receives this message, improve the reliability of message sink.
Fig. 6 shows the base station and generates and sends the process that presence of intercell interference Indication message and terminal or RS received and this interference control information was informed other base station.As shown in Figure 6, specifically comprise following processing: step S602, base station A measures on each subband the uplink interference situation numerical value Iai (i=1...N from other base station, N is the subband number), these uplink interference numerical value obtain the disturbed condition numerical value AIa of reflection base station A on whole working band by arithmetic average (or geometric average or harmonic average etc.) mode; Step S604, the AIa after base station A will quantize or the uplink interference value on several subbands send to terminal or the RS that communicates with by down channel; Step S606 successfully receives the message of the uplink interference situation that description base station A that base station A sends is subject at present with the terminal (base station number＞1 must comprise base station A) of a plurality of base station communications or RS (base station number＞1 must comprise base station A); Step S608, these terminals or RS will comprise the message of describing the uplink interference situation that base station A is subject at present by up channel and send to the base station that communicates with except the A of base station.Processing for descending interference is similar with it, no longer repeats here.
The below will further describe as an example of uplink interference example the processing procedure of Fig. 6.
In Fig. 7 a, terminal MS 1, MS2 not only can communicate by letter with base station A, also can communicate by letter with base station B, and terminal MS 1, MS2 all successfully obtains the information of the uplink interference situation that description base station A that base station A sends by down channel is subject at present, while terminal MS 1, MS2 obtains to send the positional information of describing the required common uplink running time-frequency resource of base station A uplink interference situation from base station A or base station B, terminal MS 1, MS2 sends identical content to base station B in this common uplink running time-frequency resource position, can obtain macro diversity when thereby base station B receives this message, improve the reliability of message sink.
Among Fig. 7 b, relaying RS1, RS2 not only can communicate by letter with base station A, also can communicate by letter with base station B, and relaying RS1, RS2 all successfully obtains the information of the uplink interference situation that description base station A that base station A sends by down channel is subject at present, while relaying RS1, RS2 obtains to send the positional information of describing the required common uplink running time-frequency resource of base station A uplink interference situation from base station A or base station B, relaying RS1, RS2 sends identical content to base station B in this common uplink running time-frequency resource position, can obtain macro diversity when thereby base station B receives this message, improve the reliability of message sink.
Among Fig. 7 c, relaying RS1, terminal MS 2 not only can be communicated by letter with base station A, also can communicate by letter with base station B, and relaying RS1, terminal MS 2 all successfully obtains the information of the uplink interference situation that description base station A that base station A sends by down channel is subject at present, while relaying RS1, terminal MS 2 obtains to send the positional information of describing the required common uplink running time-frequency resource of base station A uplink interference situation from base station A or base station B, relaying RS1, terminal MS 2 sends identical content to base station B in this common uplink running time-frequency resource position, can obtain macro diversity when thereby base station B receives this message, improve the reliability of message sink.
In Fig. 8 a, terminal MS 1, MS2 not only can communicate by letter with base station A, also can with base station B, base station C, base station D communication, and terminal MS 1, MS2 all successfully obtains the information of the uplink interference situation that description base station A that base station A sends by down channel is subject at present, while terminal MS 1, MS2 is from base station A, or base station B, or base station C, or D place in base station obtains to send positional information and the base station A that describes the required common uplink running time-frequency resource of base station A uplink interference situation, base station B, base station C, the orthogonal frequency expansion sequence information that base station D is corresponding, for example, sequence 1 in the corresponding 8 rank walsh sequences of base station A, sequence 2 in the corresponding 8 rank walsh sequences of base station B, sequence 3 in the corresponding 8 rank walsh sequences of base station C, the sequence 4 in the corresponding 8 rank walsh sequences of base station D.
Like this, terminal MS 1, MS2 utilize frequency expansion sequence corresponding to base station A to send to describe the information of the uplink interference situation that base station A is subject at present to base station B, base station C, base station D in this common uplink running time-frequency resource position, thereby base station B, base station C, base station D can obtain macro diversity when receiving this message by frequency expansion sequence despreading corresponding to base station A, improve the reliability of message sink.
In Fig. 8 b, relaying RS1, RS2 not only can communicate by letter with base station A, also can with base station B, base station C, base station D communication, and RS1, RS2 all successfully obtains the information of the uplink interference situation that description base station A that base station A sends by down channel is subject at present, while RS1, RS2 is from base station A, or base station B, or base station C, or D place in base station obtains to send positional information and the base station A that describes the required common uplink running time-frequency resource of base station A uplink interference situation, base station B, base station C, the orthogonal frequency expansion sequence information that base station D is corresponding, the sequence 1 in the corresponding 8 rank walsh sequences of base station A for example, sequence 2 in the corresponding 8 rank walsh sequences of base station B, sequence 3 in the corresponding 8 rank walsh sequences of base station C, the sequence 4 in the corresponding 8 rank walsh sequences of base station D.
Like this, RS1, RS2 utilize frequency expansion sequence corresponding to base station A to send to describe the information of the uplink interference situation that base station A is subject at present to base station B, base station C, base station D in this common uplink running time-frequency resource position, thereby base station B, base station C, base station D can obtain macro diversity when receiving this message by frequency expansion sequence despreading corresponding to base station A, improve the reliability of message sink.
In Fig. 8 c, relaying RS1, terminal MS 2 not only can be communicated by letter with base station A, also can with base station B, base station C, base station D communication, and RS1, MS2 all successfully obtains the information of the uplink interference situation that description base station A that base station A sends by down channel is subject at present, while RS1, MS2 is from base station A, or base station B, or base station C, or D place in base station obtains to send positional information and the base station A that describes the required common uplink running time-frequency resource of base station A uplink interference situation, base station B, base station C, the orthogonal frequency expansion sequence information that base station D is corresponding, the sequence 1 in the corresponding 8 rank walsh sequences of base station A for example, sequence 2 in the corresponding 8 rank walsh sequences of base station B, sequence 3 in the corresponding 8 rank walsh sequences of base station C, the sequence 4 in the corresponding 8 rank walsh sequences of base station D.
Like this, RS1, MS2 utilize frequency expansion sequence corresponding to base station B to send to describe the information of the uplink interference situation that base station A is subject at present to base station B, base station C, base station D in this common uplink running time-frequency resource position, thereby base station B, base station C, base station D can obtain macro diversity when receiving this message by frequency expansion sequence despreading corresponding to base station A, improve the reliability of message sink.
Processing and above-mentioned processing for descending interference are similar, no longer repeat here.
System embodiment
A kind of transmission system of interference indication message is provided in the present embodiment.The structure of this system can be with reference to Fig. 7 a to 7c and Fig. 8 a to 8c.
This system comprises: a plurality of base stations, be used for carrying out synchronously with the recipient, and wherein, the base station transmission that is subject to uplink interference and/or descending interference carries the interference indication message of the situation of uplink interference that the base station is subject to and/or descending interference; The recipient be used for to receive interference indication message, and interference indication message is sent to other base station in a plurality of base stations.
In sum, by means of technical scheme of the present invention, can be reliably, rapidly with interference indication message from the base-station transmission that is subject to uplink interference to other base station, thereby facilitate reduction or the elimination of uplink interference, the capacity and the user that have improved system experience.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (18)
1. the transmission method of an interference indication message in wireless communication system is characterized in that, comprising:
In the situation that the base station is subject to uplink interference and/or descending interference, described base station sends and is used for representing that described base station is subject to the interference indication message of the situation of described uplink interference and/or descending interference;
The recipient that success receives described interference indication message is sent to other base station synchronous with it with described interference indication message;
Wherein, described recipient is terminal and/or relay station; In the situation that described other base station is that a base station, described recipient are a plurality of terminals and/or relay station, the predetermined same or different running time-frequency resource of described a plurality of terminals and/or relay station utilization sends described interference indication message to described other base station.
2. method according to claim 1, it is characterized in that, be a terminal or a relay station in the situation that described other base station is a plurality of base stations, described recipient, it is one of following that the processing that described terminal or relay station send described interference indication message to described a plurality of base stations is specially:
Described terminal or relay station utilize identical predetermined running time-frequency resource to send described interference indication message to described a plurality of base stations;
Described terminal or relay station utilize different predetermined running time-frequency resources to send described interference indication message to described a plurality of base stations;
Described terminal or relay station utilize identical running time-frequency resource to send described interference indication message to the part base station in described a plurality of base stations, and utilize different running time-frequency resources to send described interference indication message to another part base station in described a plurality of base stations.
3. method according to claim 1, it is characterized in that, in the situation that described other base station is that a plurality of base stations, described recipient are a plurality of terminals and/or relay station, described a plurality of terminals and/or relay station all utilize same predetermined running time-frequency resource to send described interference indication message to described a plurality of base stations respectively.
4. method according to claim 1, it is characterized in that, in the situation that described other base station is that a plurality of base stations, described recipient are a plurality of terminals and/or relay station, in described a plurality of terminal and/or the relay station each utilizes different predetermined running time-frequency resources to send described interference indication message to described a plurality of base stations, and, when the same base station in described a plurality of base stations sent described interference indication message, described a plurality of terminals and/or relay station adopted the running time-frequency resource that differs from one another to send.
5. method according to claim 1, it is characterized in that, in the situation that described other base station is that a plurality of base stations, described recipient are a plurality of terminals and/or relay station, in described a plurality of terminal and/or the relay station each utilizes different predetermined running time-frequency resources to send described interference indication message to described a plurality of base stations, and, when the same base station in described a plurality of base stations sent described interference indication message, described a plurality of terminals and/or relay station adopted mutually the same running time-frequency resource to send.
6. method according to claim 1, it is characterized in that, be a plurality of base stations in described other base station, described recipient is in the situation of a plurality of terminals and/or relay station, in described a plurality of terminal and/or the relay station each all utilizes identical predetermined running time-frequency resource to send described interference indication message to the part base station in described a plurality of base stations, and utilize different running time-frequency resources to send described interference indication message to another part base station in described a plurality of base stations, wherein, when the same base station in described a plurality of base stations sent described interference indication message, described a plurality of terminals and/or relay station adopted the running time-frequency resource that is same to each other or different to each other to send.
7. method according to claim 1, it is characterized in that, in the situation that described other base station is that a plurality of base stations, described recipient are a plurality of terminals and/or relay station, the predetermined same running time-frequency resource of part terminal in described a plurality of terminal and/or the relay station and/or relay station utilization sends described interference indication message to described other base station, and another part terminal among the described recipient and/or relay station utilize different running time-frequency resources to send described interference indication message to described other base station.
8. each described method in 7 according to claim 1 is characterized in that, described recipient further utilizes the spread spectrum code sequence of the base station that is subject to described uplink interference and/or descending interference to send described interference indication message.
9. method according to claim 8 is characterized in that, the described spread spectrum code sequence of utilization and the mutually orthogonal or accurate quadrature of the spread spectrum code sequence of described other base station.
10. method according to claim 1 is characterized in that, the described base station synchronous with described recipient is: the base station that the synchronizing channel of its transmission and/or broadcast channel are successfully received by described recipient; Perhaps set up the base station of synchronization with described recipient.
11. method according to claim 1 is characterized in that, after described recipient receives described interference indication message, further comprises:
The situation of the described uplink interference of carrying in the described interference indication message of described recipient according to reception and/or the situation of descending interference and/or described recipient's itself power consumption situation determines whether send described interference indication message to described other base station.
12. each described method in 7,10 and 11 according to claim 1, it is characterized in that, described interference indication message carries the uplink interference of a plurality of sub-bands that consist of the whole working band of described wireless communication system and/or the situation of descending annoyance level, perhaps carries the uplink interference of the whole working band of the described wireless communication system of formation and/or the situation of descending annoyance level.
13. each described method in 7,10 and 11 is characterized in that according to claim 1, described base station sends described interference indication message with predetermined period or according to predetermined interference incident to described recipient.
14. each described method in 7,10 and 11 is characterized in that according to claim 1, described base station sends described interference indication message with analog form or digital form to described recipient.
15. each described method in 7,10 and 11 according to claim 1, it is characterized in that, described base station sends described interference indication message by superframe, wherein, described base station in the superframe head of described superframe and/or the position in the described superframe outside the described superframe head carry described interference indication message.
16. each described method in 7,10 and 11 is characterized in that according to claim 1, described base station sends described interference indication message in the mode of clean culture and/or multicast.
Set up synchronous a plurality of base stations 17. the transmission method of an interference indication message in wireless communication system, described wireless communication system comprise as a plurality of terminals of recipient and/or relay station and with described recipient, it is characterized in that, described method comprises:
The base station that is subject to uplink interference and/or descending interference in described a plurality of base stations sends and is used for representing that described base station is subject to the interference indication message of the situation of described uplink interference and/or descending interference;
Success receives the predetermined same running time-frequency resource of terminal among the recipient of described interference indication message and/or relay station utilization described interference indication message is sent to other base station in described a plurality of base station; Perhaps the part terminal among the described recipient and/or relay station utilize identical running time-frequency resource to send described interference indication message to described other base station, and another part terminal among the described recipient and/or relay station utilize different running time-frequency resources to send described interference indication message to described other base station; Perhaps described recipient utilizes identical running time-frequency resource to send described interference indication message to the part base station in described other base station, and utilizes different resources to send described interference indication message to another part base station in described other base station.
18. the transmission system of an interference indication message is characterized in that, comprising:
A plurality of base stations are used for carrying out synchronously with the recipient, and wherein, the base station transmission that is subject to uplink interference and/or descending interference carries the interference indication message of the situation of described uplink interference that described base station is subject to and/or descending interference;
Described recipient is used for receiving described interference indication message, and described interference indication message is sent to other base station in described a plurality of base station;
Wherein, described recipient is terminal and/or relay station; In the situation that described other base station is that a base station, described recipient are a plurality of terminals and/or relay station, the predetermined same or different running time-frequency resource of described a plurality of terminals and/or relay station utilization sends described interference indication message to described other base station.
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| CN101917729B (en) * | 2010-08-13 | 2016-04-13 | 中兴通讯股份有限公司 | A kind of time domain interference indicating means, time-domain resource interference defining method and base station thereof |
| CN102378384B (en) * | 2010-08-16 | 2015-07-22 | 华为技术有限公司 | Scheduling method and equipment |
| CN108365908B (en) * | 2017-01-26 | 2020-03-10 | 华为技术有限公司 | Information sending and receiving method and device |
| EP3874629B1 (en) * | 2018-11-02 | 2024-11-27 | ZTE Corporation | Interference management in wireless systems |
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| WO2008035166A2 (en) * | 2006-09-18 | 2008-03-27 | Nokia Corporation | Interference management techniques for relay enhanced wireless networks |
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