WO2011060580A1

WO2011060580A1 - Method and device for spectrum sharing in wireless distributed communication network

Info

Publication number: WO2011060580A1
Application number: PCT/CN2009/075016
Authority: WO
Inventors: 徐斌阳
Original assignee: 上海贝尔股份有限公司; 阿尔卡特朗讯
Priority date: 2009-11-18
Filing date: 2009-11-18
Publication date: 2011-05-26
Also published as: CN102726086A; CN102726086B

Abstract

A method and a device for spectrum sharing in a wireless distributed communication network are provided. The method includes that several communication groups compose a sharing community which shares spectrum, each communication group sends, according to a communication scheme determined by said each communication group respectively, a training signal to evaluate the communication scheme, and sends the evaluation result to other communication groups. During a time period, only one communication group updates the communication scheme, namely, several communication groups update the communication schemes in turn during different time periods. With the manner described above, distributed spectrum sharing is performed without support of IP connection, and the spectrum utilization efficiency can be improved.

Description

Method and device for spectrum sharing in wireless distributed communication network

Technical field

The present invention relates to a method and apparatus for spectrum sharing, and more particularly to a method and apparatus for spectrum sharing in a wireless distributed communication network. Background technique

For distributed spectrum sharing, a typical prior art solution is found in IEEE 802.16h WiMAX. The system architecture of the solution is shown in Figure 1. Adjacent base stations with overlapping signal coverage areas constitute a spectrum sharing community in which the spectrum is shared distributed. Each base station has a distributed database that stores shared information about the spectrum resources actually used and to be used. These distributed databases can be accessed via an IP connection using a Coexistence Proxy.

An initial base station (IBS, Initializing Base) before entering the spectrum sharing community

Station ) will broadcast its information in the Initial Coordination Signaling Interval (ICSI) of the coexistence channel. Its neighboring base stations, that is, the operating base station (OBS), will use the coexistence proxy to send the respective current spectrum usage information to the initial base station using the coexistence protocol message. Based on the acquired spectrum usage information, the initial base station can know which spectrum segment (time/frequency resource block) to use. When the initial base station can find an idle spectrum segment, the spectrum hole can be utilized. When there is no available free spectrum segment, the initial base station will initiate a spectrum negotiation process with the working base station to share the working channel of the working base station. Summary of the invention

The distributed spectrum sharing scheme in 802.16h relies on IP networks. Communication messages between most systems, such as coexistence protocol messages, are communicated by the IP network through the protocol interface of the coexistence agent. This scheme can alleviate the signaling overhead of the air interface. However, this scheme cannot be applied in a distributed network without an IP connection. In addition, a coexistence agent must be set up for protocol transfer. This will increase the complexity and cost of the spectrum sharing system.

Furthermore, in this scheme, the spectrum is utilized by a pattern of finding and filling: The initial base station will first find the free spectrum segment. If there are free spectrum resources, fill in. If not, the initial base station initiates a spectrum negotiation process with the lighter working base station to obtain the spectrum segment. This type of spectrum sharing scheme uses a simple method of allocating spectrum resources. However, in principle, the spectrum sharing mechanism is not optimal because there is no spectrum allocation optimization mechanism in the spectrum sharing community, so it is difficult to obtain high frequency spectrum utilization.

In order to solve the above problems, the present invention provides a method and apparatus for spectrum sharing in a wireless distributed communication network. According to an embodiment of the first aspect of the present invention, a method for spectrum sharing in a first device of a first communication group of a wireless distributed communication network is provided. The first communication group further includes a second device, the first device intends to send data information to the second device, the first communication group and the other at least one communication group forming a shared community of shared frequencies. The method includes:

Obtaining a timing information indicating a time period during which only the first communication group can perform a communication plan update;

- transmitting a training signal to the second device according to a communication scheme of the first communication group;

Receiving a training signal reception information transmitted by the second device, the training signal reception information indicating a reception performance of the training signal or indicating that the second device is based on a reception performance of the training signal The evaluation result of the communication scheme;

Receiving communication scheme evaluation information transmitted by each of the other at least one communication group, each communication scheme evaluation information indicating that each communication group determines each of the respective training signals based on the reception performance An evaluation result of the communication scheme; and - updating the communication of the first communication group during the time period according to the training signal reception information, the communication scheme evaluation information, and a predetermined optimization iteration policy Letter plan.

Since only one communication group can update the communication scheme over a period of time, there is no case where all communication groups in the shared community simultaneously update the communication scheme. In this way, it is possible to avoid a large change in the communication scheme of the shared spectrum of the plurality of communication groups due to the simultaneous communication scheme update of the plurality of communication groups, so that when the communication scheme is updated using the optimized iterative strategy, as soon as possible Get the final communication plan. In addition, by transmitting training signals according to the communication scheme, the communication group can accurately understand the channel conditions that will be used to transmit data information, and help the communication group to determine the final communication scheme. In addition, by transmitting timing information, training signals, communication scheme evaluation information, and training signal reception information over the air interface, distributed spectrum sharing can be achieved without an IP connection. According to an embodiment of the second aspect of the present invention, a method for spectrum sharing in a second device of a first communication group of a wireless distributed communication network is provided. The first communication group further includes a first device, the first device intends to send data information to the second device, and the first communication group and the other at least one communication group form a shared community sharing the spectrum. The method includes:

Receiving a training signal transmitted by the first device;

Receiving communication scheme evaluation information transmitted by each of the other at least one communication group, each communication scheme evaluation information indicating that each communication group determines each of the respective training signals based on the reception performance An evaluation result of the communication scheme; and - updating the communication scheme of the first communication group during the time period according to the reception performance of the training signal, the communication scheme evaluation information, and a predetermined optimization iteration strategy. According to an embodiment of the third aspect of the present invention, a first device of a first communication group for spectrum sharing of a wireless distributed communication network is provided. The first communication group A second device is also included, the first device intends to send data information to the second device, and the first communication group and the other at least one communication group form a shared community sharing the spectrum. The first device includes:

An obtaining device, configured to acquire a timing information, the timing information indicating a time period, wherein only the first communication group can perform a communication plan update during the time period;

a transmitting device, configured to send a training signal to the second device according to a communication scheme of the first communication group;

a receiving device, configured to receive a training signal receiving information sent by the second device, the training signal receiving information indicating a receiving performance of the training signal or indicating that the second device is in the training signal The evaluation result of the communication scheme based on the reception performance;

The receiving device is further configured to receive communication scheme evaluation information sent by each of the other at least one communication group, each communication scheme evaluation information indicating a receiving performance of each communication group in a respective training signal The results of the evaluation of the respective identified communication schemes;

An updating means for updating the communication scheme of the first communication group during the time period based on the training signal receiving information, the communication scheme evaluation information, and a predetermined optimization iteration policy. According to an embodiment of the fourth aspect of the present invention, a second device for a first communication group for spectrum sharing of a wireless distributed communication network is provided. The first communication group further includes a first device, the first device intends to send data information to the second device, and the first communication group and the other at least one communication group form a shared community sharing the spectrum. The second device includes:

a receiving device, configured to receive a training signal sent by the first device; the receiving device is further configured to receive communication solution evaluation information sent by each of the other at least one communication group, Each communication plan evaluation information indicates each The evaluation results of the respective communication schemes based on the reception performance of the respective training signals;

An updating means for updating the communication scheme of the first communication group during the time period based on the reception performance of the training signal, the communication scheme evaluation information, and a predetermined optimization iteration policy.

Clear. DRAWINGS

The above and other features, objects and advantages of the present invention will become more apparent from the detailed description of the accompanying drawings <RTIgt;

2 is a flow chart of a method in accordance with an embodiment of the present invention;

3 is a flow chart of a method in accordance with another embodiment of the present invention;

4 is a schematic diagram of a frame structure in accordance with an embodiment of the present invention;

FIG. 5 is a schematic diagram of an application scenario according to an embodiment of the present invention; FIG.

Figure 6 is a block diagram of a first device in accordance with one embodiment of the present invention; and Figure 7 is a block diagram of a second device in accordance with one embodiment of the present invention.

The same or similar reference numerals in the drawings represent the same or similar components. detailed description

2 is a flow chart of a method in accordance with one embodiment of the present invention.

According to an embodiment of the first aspect of the present invention, a method for spectrum sharing in a first device of a first communication group of a wireless distributed communication network is provided. The first communication group further includes a second device, and the first device intends to send data information to the second device. The first communication group and the other at least one communication group form a shared community sharing the spectrum. In a wireless distributed communication network, signaling and data transmission are performed between devices over a wireless air interface. The first device and the second device can be implemented in various manners, for example. Such as a base station, a relay station or a user terminal. Since the first device wants to send data information to the second device, it is necessary to determine a spectrum sharing scheme, that is, allocate spectrum resources, for data transmission from the first device to the second device. A communication group corresponds to a communication link consisting of a sender and a receiver.

The spectrum sharing community can be formed in a variety of ways. For example, multiple communication groups within a given area form a frequency-sharing community, or multiple communication groups that compete for the same multiple sub-bands to form a spectrum-sharing community. .

As shown in FIG. 2, the method includes the step 210: The first device acquires a timing information indicating a time period during which only the first communication group can perform a communication plan update.

There is no centralized control device in the distributed network. Therefore, in a spectrum sharing community, each communication group uses an optimized iterative strategy to update its communication schemes, thereby optimizing the overall communication performance of the spectrum sharing community, especially spectrum utilization.

Based on many optimization theories, optimal iterative strategies with appropriate convergence speed and optimization performance can be designed, such as game theory, convex optimization theory, and combinatorial optimization theory. In these algorithms, each communication group in a shared community may have its own objective function or individual function. Each communication group develops its own communication schemes, rather than independently, to maximize their respective target performance. By updating the communication scheme of each communication group by using the optimized iteration strategy, the overall communication performance of the system is optimized, and the spectrum utilization rate is improved. The convergence of the optimization iterative strategy and the performance of the optimization can be ensured by appropriate objective function design and theoretical modeling. How to design an optimized iterative strategy is not an object of the present invention and will not be described herein.

The communication scheme of a communication group may include a channel selected by the communication group for communication and a signal transmission power, wherein the selection of the channel may be any one or a combination of any of the following: space, time, frequency, coding. A more typical channel selection is to select the transmit band or time slot in the shared band.

Typically, each communication group within a spectrum sharing community begins to update its respective communication scheme according to an iterative optimization strategy, triggered by certain spectrum sharing trigger events. Possible trigger events include: The number of spectrums in the shared band and/or the change in shield volume, with new communication groups Join the spectrum sharing community, or have a communication group to exit the spectrum sharing community.

In the present embodiment, the first communication group determines when to perform the communication plan update based on the time period indicated by the time series information, and only the first communication group can perform the communication plan update within the indicated time period. In this way, in a period of time, only one communication group in a plurality of communication groups in the shared community can perform the program update, and there is no case that all communication groups in the shared community simultaneously update the communication scheme. Therefore, it is possible to avoid a large change in the communication scheme of the shared frequency of the plurality of communication groups caused by the plurality of communication groups simultaneously performing the communication scheme update, thereby improving the iterative convergence speed when updating the communication scheme using the optimized iterative strategy. , get the final communication plan as soon as possible.

The first communication group can obtain timing information in a variety of ways. For example, a communication group of a plurality of communication groups in a shared community, such as a communication group that first joined the shared community, determines a time period during which each communication group is used to perform a communication plan update. As another example, a plurality of communication groups in a shared community use a competition mechanism, such as a collision detection mechanism, to determine a time period that each communication group uses to update the communication plan.

The method further includes the step 220, the first device transmitting a training signal to the second device according to a communication scheme of the first communication group.

The communication scheme of the first communication group may be an initial communication scheme or a communication scheme updated by optimizing the iterative strategy. The first communication group may only perform channel selection of the cartridge when determining the initial communication scheme, and set the signal transmission power to unit power.

The first device verifies the performance of the existing communication scheme by transmitting the training signal according to the determined communication scheme, that is, the first device uses the training signal to simulate a situation in which the data information is transmitted using the determined communication scheme, thereby evaluating the location Determined communication plan.

While the first communication group transmits the training signal, other communication groups that belong to the same shared community as the first communication group also send training signals according to the respective communication schemes. Each communication group in the shared community transmits training signals synchronously, that is, each communication group transmits a training signal at the same time period. The synchronization of the training signal transmissions of each communication group can be synchronized by the same external clock, such as GPS synchronization; or synchronized with the same communication group, for example, with the communication group that joined the shared community at the earliest.

The method also includes the step 230, the first device receiving the one sent by the second device The training signal receiving information indicating the receiving performance of the training signal or indicating the evaluation result of the second communication device based on the receiving performance of the training signal on the existing communication scheme of the first communication group.

When the first device in the first communication group transmits the training signal, the second device of the first communication group receives the training signal transmitted by the first device, and checks the reception performance of the training signal. The receiving performance of the training signal may include a plurality of parameters characterizing the received signal shield or the wireless channel shield between the first device and the second device, such as the received training signal power, the signal to interference ratio, the signal to interference and noise ratio, The power, error rate, bit error rate, etc. of the interference signal.

In one embodiment, the second device transmits the received performance of the detected training signal to the first device via the training signal receiving information. The second device can transmit the reception performance of the training signal to the first device through the training signal in a plurality of manners. For example, both the first device and the second device pre-store a mapping table that classifies the possible received training signal performance. The second device transmits a label corresponding to the received performance of the detected training signal to the first device, and the first device can determine the receiving performance of the training signal by looking up the mapping table.

In another embodiment, the second device evaluates the determined communication scheme based on the reception performance of the training signal and transmits the evaluation result to the first device through the training signal reception information. Each communication group of a shared community evaluates their respective communication schemes based on the reception performance of their respective training signals. The evaluation results may include a variety of content, such as target performance increments or communication scheme preferences. The target performance may include a data transmission rate, and when the target performance is a data transmission rate, the target performance increment is a difference between two data transmission rates detected based on the reception performance of the training signal. Communication scheme preferences may include information related to co-channel interference, such as co-channel interference sensitivity, which may be expressed as a decrease in data transmission rate due to an increase in unit-channel interference. In general, the lower the sensitivity of the co-channel interference of a channel, the higher the tendency to select the channel.

The second device may send the evaluation result of the determined communication scheme according to the training signal to the first device through the training signal in a plurality of manners. For example, both the first device and the second device pre-store a mapping table, which classifies the possible evaluation results. The second device sends a label corresponding to the evaluation result of the determined communication scheme The first device can send the first device, and the first device can determine the receiving performance of the training signal by searching the mapping table.

The method also includes the step 240 of the first device receiving communication plan evaluation information transmitted by each of the other at least one communication group. Each communication scheme evaluation information indicates an evaluation result of each communication group based on the reception performance of the respective training signals for the respective determined communication schemes.

The method also includes the step 250 of, the first device updating the communication scheme of the communication group at a time period indicated by the timing information based on the training signal reception information, the communication scheme evaluation information, and a predetermined optimization iteration policy.

The evaluation results of the respective training signals transmitted by the respective communication groups in a shared community using the respective communication schemes become prior knowledge for the communication scheme update. In other words, the predetermined optimized iterative strategy can be represented as a function; the input to the function includes the evaluation results of the communication groups in the shared community; the output of the function includes the determined communication scheme, such as the selected channel and/or the determined signaling Power and other content.

When the training signal reception information sent by the second device indicates the reception performance of the training signal, the first device evaluates the determined communication scheme according to the reception performance of the training signal, and uses the evaluation result as an input of the optimization iteration strategy. When the training signal receiving information sent by the second device indicates the evaluation result of the communication scheme determined by the first communication group based on the receiving performance of the training signal by the second device, the first device directly optimizes the evaluation result The input of the iteration strategy.

The first device will judge whether the target performance of each communication group satisfies an update stop condition. Other communication groups in the shared community will also perform such judgments separately. If the update stop condition is not met, the above steps will be repeated for the next communication plan update. If the update stop condition is satisfied, each communication group determines the updated communication scheme as the respective communication scheme, and ends the communication scheme update process. Thereafter, each communication group will communicate according to the respective final communication scheme determined. The update stop condition can be determined in a number of ways. For example, the update stop condition may be that the increment of the target performance of each communication group is less than a predetermined value. When this update stop condition is satisfied, it means that there is not much room for improvement in the communication performance of each communication group. In some other embodiments, different communication groups may also be provided. Different predetermined values, that is, the fixed update stop condition becomes that the target performance increment of each communication group is smaller than the respective predetermined values. The update stop condition may also be the number of communication plan update times, and when the number of updates of each communication group exceeds a predetermined value, the process of updating the communication plan is ended.

The first device may not transmit the communication scheme updated each time to the second device before the communication scheme update process ends. After the communication scheme update process ends, the first device transmits the final communication scheme to the second device, so that the second device acquires the latest communication scheme of the first communication group.

In still another embodiment of the method, the method further includes the step of: determining, by the first device, the communication plan evaluation information of the first communication group according to the reception performance of the training signal. The communication scheme evaluation information of the first communication group indicates the evaluation result of the determined communication scheme by the first device based on the reception performance of the training signal; and the first device transmits the communication scheme evaluation information of the first communication group to the other At least one communication group. In this way, other communication groups in the shared community can receive the communication plan evaluation information of the first communication group, thereby updating the respective communication schemes.

Since the other communication groups in the shared community acquire the communication scheme evaluation information of the first communication group for the purpose of updating the communication schemes of the other communication groups, when only the first communication group can perform the communication scheme update at a certain time period The first communication group may not transmit the communication plan evaluation information of the first communication group after the other communication group performs the communication plan update and before updating the communication plan by itself. In addition, when the first communication group does not perform the communication scheme update in the next time period, the communication scheme evaluation information transmitted by the other communication group may not be received. 3 is a flow chart of a method in accordance with another embodiment of the present invention.

According to an embodiment of the second aspect of the present invention, a method for spectrum sharing in a second device of a first communication group of a wireless distributed communication network is provided. The first communication group further includes a first device, the first device intends to send data information to the second device. The first communication group and the other at least one communication group form a shared community sharing the spectrum. As shown in FIG. 3, the method includes the step 310: The second device acquires a time series information indicating a time period, and only the first communication group can perform a communication plan update during the time period. The communication scheme of a communication group may include the channel and/or signal transmission power selected by the communication group for communication.

Since the first device intends to transmit data information to the second device, the first device transmits a training signal according to the communication scheme determined by the first communication group to evaluate the determined communication scheme.

The method also includes the step 320 of receiving, by the second device, the training signal transmitted by the first device.

The method also includes the step 330 of the second device receiving communication plan evaluation information transmitted by each of the other at least one communication group. Each communication scheme evaluation information indicates an evaluation result of each communication group based on the reception performance of the respective training signals for the respective determined communication schemes. The evaluation results can include a variety of content, such as target performance increments or communication scheme preferences.

The method further includes the step 340 of updating, by the second device, the communication scheme of the first communication group based on the reception performance of the training signal, the communication scheme evaluation information, and a predetermined optimization iteration policy.

In one embodiment, the second device can evaluate the existing communication scheme of the first communication group based on the reception performance of the training signal and use the evaluation result as an input to optimize the iterative strategy.

The second device will determine if the target performance of each communication group satisfies an update stop condition. Other communication groups in the shared community will also perform such judgments separately. If the update stop condition is not met, the above steps will be repeated for the next communication plan update. If the update stop condition is satisfied, each communication group determines the updated communication scheme as the respective communication scheme, and ends the communication scheme update process. Thereafter, each communication group will communicate according to the respective final communication scheme determined.

After updating the communication scheme each time, the second device sends the updated communication scheme to the first device, so that the first device acquires the latest communication scheme of the first communication group. After obtaining the latest communication scheme of the first communication group, the first device can send the latest communication scheme according to the latest communication scheme. Send training signals. 4 is a schematic diagram of a frame structure in accordance with one embodiment of the present invention.

The above embodiment can be implemented by the frame structure shown in FIG. As shown in FIG. 4, a normal MAC (Media Access Control) frame is used to transmit data information, that is, communication data between devices in a wireless distributed communication network. The management MAC frame is used to transmit management information, i.e., a communication scheme for devices in a wireless distributed communication network to determine spectrum sharing.

In the management MAC frame, the frame control header is used to provide network common information. The access management subframe is used to determine the order of the updated communication schemes for multiple communication groups in the wireless distributed communication network. How to determine the order of the update communication schemes of the plurality of communication groups is not the object of the present invention, and details are not described herein.

In the spectrum allocation subframe, a plurality of time slots are included, and the number N of the plurality of time slots can be determined according to the maximum number of users that can be supported on one spectrum segment in a certain area. At each time slot, there is only one communication group to update the communication scheme. Each time slot includes a policy making interval, a training interval, and a signaling interval. Corresponding to the above embodiment, the policy setting interval is used by the first device or the second device to update the communication scheme; the training interval is used by the first device to send the training signal; and the signaling interval is used for each communication group in the shared community to send the communication plan evaluation information. .

It can be seen from the above embodiments that when a plurality of communication groups form a shared community sharing a spectrum, each communication group evaluates the communication scheme by transmitting training signals according to the respective determined communication schemes, and transmits the evaluation results to other groups. Communication group. In one time period, only one communication group can perform communication scheme update, that is, multiple communication groups alternately update the communication schemes in different time periods. Distributed spectrum sharing in this way eliminates the need for IP connectivity and improves spectrum utilization.

The following is an example of a spectrum sharing community composed of three communication groups to further explain the method of spectrum sharing.

Figure 5 is a schematic illustration of an application scenario in accordance with one embodiment of the present invention.

As shown in Figure 5, there are three communication groups in a shared community, in the first communication group. In the second communication group, the device Tx2 intends to send data information to the device Rx2. In the third communication group, the device Tx3 intends to send data information to the device Rx3. These three communication groups need to determine the sharing scheme on two shared channels (for example, two sub-bands).

First, three communication groups exchange network information and communication group information with each other. The network information includes the use of the frequency language, the optimized iterative strategy and the iterative convergence conditions. The communication group information includes the channel shield and parameters for iterative optimization.

Second, each of the three communication groups determines an initial communication scheme, i.e., selects the channel to be used from the two shared channels and the transmission power to be used, and acquires a time period for updating the communication scheme. It is assumed that the order in which the three communication groups update the communication scheme is that the communication group TxlRxl first updates the communication scheme, then the communication group Tx2Rx2 updates the communication scheme, and then the communication group Tx3Rx3 updates the communication scheme.

Again, devices Txl, Τχ2, and Τχ3 simultaneously send training signals in accordance with their respective initial communication schemes. The devices Rx1, Rx2, and Rx3 receive the training signals and each estimate the quality of the received training signals to evaluate the data transmission rate and the common channel interference sensitivity under the respective communication schemes.

The devices Rx2 and Rx3 then send their respective evaluation results in the form of communication plan evaluation information. Devices Rx2 and Rx3 can use multiple multiple access methods when transmitting communication scheme evaluation information, such as time division multiple access or code division multiple access. The devices Rx2 and Rx3 can obtain the multiple access mode that should be used by receiving one out-of-band signaling or by using the multiple access mode. The device Rxl receives the communication scheme evaluation information sent by the devices Rx2 and Rx3, and updates its communication scheme according to its own evaluation result and the optimized iteration strategy.

Next, the device Tx1 transmits the training signal according to the updated communication scheme, and the devices Tx2 and Τχ3 still transmit the training signal using the original communication scheme. The devices Rx1, Rx2, and Rx3 receive the training signals and each estimate the quality of the received training signals to evaluate the data transmission rate and the common channel interference sensitivity under the respective communication schemes. The devices Rxl and Rx3 send their respective evaluation results in the form of communication plan evaluation information. The device Rx2 receives the communication scheme evaluation information sent by the devices Rxl and Rx3, and according to its own evaluation The results and optimization of the iteration strategy update their communication scheme.

Then, the device Tx2 transmits the training signal according to the updated communication scheme, and the devices Tx1 and Τχ3 still transmit the training signal using the original communication scheme. The devices Rxl, Rx2, and Rx3 receive the training signals and each estimate the quality of the received training signals to evaluate the data transmission rate and the common channel interference sensitivity under the respective communication schemes. The devices Rxl and Rx2 send their respective evaluation results in the form of communication plan evaluation information. The device Rx3 receives the communication scheme evaluation information sent by the devices Rxl and Rx2, and updates its communication scheme according to its own evaluation result and optimization iteration strategy.

The three communication groups repeat the above steps until the convergence condition of the optimized iterative strategy is met. Figure 6 is a block diagram of a first device 600 in accordance with one embodiment of the present invention.

According to an embodiment of the third aspect of the present invention, a first device 600 for a first communication group for spectrum sharing of a wireless distributed communication network is provided. The first communication group also includes a second device, the first device intends to send data information to the second device. The first communication group and the other at least one communication group form a shared community sharing the spectrum.

As shown in FIG. 6, the first device 600 includes an acquisition device 610 for acquiring a timing information. The timing information indicates a time period during which only the first communication group can perform a communication plan update.

The first device 600 further includes a transmitting device 620 for transmitting a training signal to the second device in accordance with a communication scheme of the first communication group.

The first device 600 further includes a receiving device 630, configured to receive a training signal receiving information sent by the second device, the training signal receiving information indicating a receiving performance of the training signal or indicating that the second device is in the training signal The result of the evaluation of the existing communication scheme of the first communication group based on the reception performance.

The receiving device 630 is further configured to receive communication plan evaluation information sent by each of the other at least one communication group, where each communication plan evaluation information indicates that each communication group is based on the receiving performance of the respective training signals. The evaluation results of the respective determined communication schemes. The first device 600 further includes an update device 640 for updating the communication plan of the first communication group according to the training signal receiving information, the communication plan evaluation information, and a predetermined optimization iteration policy.

In an embodiment of the first device 600, the first device 600 further includes a determining device, configured to determine, according to the receiving performance of the training signal, communication solution evaluation information of the first communication group, the communication solution of the first communication group The evaluation information indicates an evaluation result of the communication scheme by the first device based on the reception performance of the training signal. The transmitting device 620 is further configured to send the communication plan evaluation information of the first communication group to the other at least one communication group. Figure Ί is a block diagram of a second device 700 in accordance with one embodiment of the present invention.

According to an embodiment of the fourth aspect of the present invention, a second device 700 for a first communication group for spectrum sharing of a wireless distributed communication network is provided. The first communication group also includes a first device, the first device intending to transmit data information to the second device 700. The first communication group and the other at least one communication group form a shared community of shared frequency consultation.

As shown in FIG. 7, the second device 700 includes an obtaining means 710 for acquiring timing information indicating a time period during which only the first communication group can perform communication scheme update.

The second device 700 also includes a receiving device 720 for receiving the training signal transmitted by the first device.

The receiving device 720 is further configured to receive communication solution evaluation information sent by each of the other at least one communication group, each communication plan evaluation information indicating a receiving performance basis of each communication group in a respective training signal The results of the evaluation of the respective identified communication schemes.

The second device 700 further includes an updating means 730 for updating the communication scheme of the first communication group at a time period indicated by the timing information based on the reception performance of the training signal, the communication scheme evaluation information, and a predetermined optimization iteration policy.

In an embodiment of the second device 700, the second device 700 further includes a determination Device and a transmitting device. Determining means for determining communication scheme evaluation information of the first communication group according to the receiving performance of the training signal, the communication scheme evaluation information of the first communication group indicating that the second device 700 is based on the receiving performance of the training signal to the communication scheme evaluation result. The transmitting device is configured to send the communication plan evaluation information of the first communication group to the other at least one communication group.

In still another embodiment of the second device 700, the second device 700 further includes a transmitting device for transmitting the updated communication scheme to the first device. It is apparent to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the invention is defined by the appended claims All changes in the meaning and scope of equivalent elements are included in the present invention. Any reference signs in the claims should not be construed as limiting the claim. In addition, it is obvious that the word "comprising" does not exclude other elements or steps, and the singular does not exclude the plural. The plurality of units or devices recited in the system claims can also be implemented by a unit or device by software or hardware. The first, second, and the like are used to denote names, and do not denote any particular order.

Claims

Claim

A method for spectrum sharing in a first device of a first communication group of a wireless distributed communication network, the first communication group further comprising a second device, the first device intending to send data information to The second device, the first communication group and the other at least one communication group form a shared community of shared frequency, the method includes:

A. Obtaining a timing information indicating a time period during which only the first communication group can perform a communication plan update;

B. transmitting, according to a communication scheme of the first communication group, a training signal to the second device;

C. receiving a training signal receiving information sent by the second device, the training signal receiving information indicating a receiving performance of the training signal or indicating a basis of receiving performance of the second device in the training signal The evaluation result of the communication scheme;

D. receiving communication scheme evaluation information transmitted by each of the other at least one communication group, each communication scheme evaluation information indicating that each communication group determines each of the respective training signals based on the reception performance Evaluation of the communication plan; and

E. updating the communication scheme of the first communication group during the time period based on the training signal reception information, the communication scheme evaluation information, and a predetermined optimization iteration policy.

2. The method according to claim 1, wherein after the step C, the method further comprises the steps of:

Determining, according to the receiving performance of the training signal, communication scheme evaluation information of the first communication group, the communication scheme evaluation information of the first communication group indicating that the first device is based on the receiving performance of the training signal Evaluation results of the communication scheme;

- transmitting the communication plan evaluation information of the first communication group to the other at least one communication group.

3. The method of claim 1, wherein the communication scheme comprises at least one of: channel selection and power allocation.

The method according to claim 1 or 2, wherein the communication scheme evaluation information includes at least one of the following: a target performance increment and a communication scheme preference.

5. A method for spectrum sharing in a second device of a first communication group of a wireless distributed communication network, the first communication group further comprising a first device, the first device intending to send data information to The second device, the first communication group and the other at least one communication group form a shared community sharing the spectrum, and the method includes:

b. receiving a training signal sent by the first device;

c receiving communication scheme evaluation information transmitted by each of the other at least one communication group, each communication scheme evaluation information indicating that each communication group determines each of the respective training signals based on the reception performance An evaluation result of the communication scheme; and d. updating the communication scheme of the first communication group during the time period according to the reception performance of the training signal, the communication scheme evaluation information, and a predetermined optimization iteration strategy.

6. The method according to claim 5, wherein after the step b, the method further comprises the steps of:

Determining communication scheme evaluation information of the first communication group according to the receiving performance of the training signal, where the communication scheme evaluation information of the first communication group indicates that the second device is based on the receiving performance of the training signal An evaluation result of the communication scheme; and - transmitting the communication scheme evaluation information of the first communication group to the other at least one communication group.

7. The method according to claim 5, further comprising after the step d Steps:

- transmitting the updated communication scheme to the first device.

8. The method of claim 5, wherein the communication scheme comprises at least one of: channel selection and power allocation.

The method according to claim 5 or 6, wherein the communication scheme evaluation information includes at least one of the following: a target performance increment and a communication scheme preference.

10. A first device for a first communication group for spectrum sharing of a wireless distributed communication network, the first communication group further comprising a second device, the first device intending to send data information to the second device The first communication group and the other at least one communication group form a shared community sharing a spectrum, and the first device includes:

An obtaining device, configured to acquire a timing information indicating a time period, wherein only the first communication group can perform a communication scheme update during the time period; and a transmitting device configured to use the first a communication scheme of the communication group, sending a training signal to the second device;

And an updating device, configured to update the communication scheme of the first communication group during the time period according to the training signal receiving information, the communication scheme evaluation information, and a predetermined optimization iteration policy.

The first device according to claim 10, further comprising:

a determining device, configured to determine communication scheme evaluation information of the first communication group according to a receiving performance of the training signal, where communication scheme evaluation information of the first communication group indicates that the first device is in the training The evaluation result of the communication scheme based on the reception performance of the signal;

The sending device is further configured to send the communication plan evaluation information of the first communication group to the other at least one communication group.

12. A second device for a first communication group for spectrum sharing of a wireless distributed communication network, the first communication group further comprising a first device, the first device intending to transmit data information to the second device The first communication group and the other at least one communication group form a shared community sharing a spectrum, and the second device includes:

a receiving device, configured to receive a training signal sent by the first device; the receiving device is further configured to receive communication solution evaluation information sent by each of the other at least one communication group, Each communication scheme evaluation information indicates an evaluation result of each communication group based on the reception performance of the respective training signals for the respective determined communication schemes;

The second device according to claim 12, further comprising:

a determining device, configured to determine communication scheme evaluation information of the first communication group according to a receiving performance of the training signal, where communication scheme evaluation information of the first communication group indicates that the second device is in the training The evaluation result of the communication scheme based on the reception performance of the signal;

a transmitting device for transmitting the communication scheme evaluation of the first communication group Information is given to the other at least one communication group.

The second device according to claim 12, further comprising:

a transmitting device for transmitting the updated communication scheme to the first device