WO2010105425A1

WO2010105425A1 - Method, device and computer program for interacting shared information between communication units

Info

Publication number: WO2010105425A1
Application number: PCT/CN2009/070885
Authority: WO
Inventors: 邱吉刚; 杨峰; 徐斌阳
Original assignee: 上海贝尔股份有限公司; 阿尔卡特朗讯公司
Priority date: 2009-03-19
Filing date: 2009-03-19
Publication date: 2010-09-23
Also published as: CN102273171A

Abstract

A method, a device and computer program for interacting shared information between communication units are provided, wherein the communication units communicate with each other by at least one forwarding unit. The method includes the following steps: when the forwarding units receive shared information from at least one communication unit, they judge whether the information is need to be forwarded to at least one other communication unit or not; the other communication units are notified that the information is received if the information is need to be forwarded; the other communication units select appropriate forwarding units from the at least one forwarding unit that sent notification to them to forward the information and at least notify the selected forwarding units the selecting result after receiving notification from the at least one forwarding unit; the selected forwarding units forward the received shared information to the other communication units after receiving the notification from the other communication units.

Description

Method, device and computer program for interactively sharing information between communication units

Technical field

The present invention relates to network communications and, more particularly, to a method, apparatus and computer program for information interaction between communication units for resource sharing. Background technique

With the widespread deployment of various wireless communication systems (such as WLAN, mobile phone networks, WiMAX, etc.), wireless spectrum has become increasingly scarce. As a feasible solution to the problem of spectrum shortage, spectrum sharing technology is attracting widespread attention.

The spectrum sharing mechanism can be divided into two categories according to whether it is necessary to exchange information related to spectrum utilization between communication nodes: a coordinated mode and a non-coordinated mode. In the coordinated mode, wireless nodes or other communication links can be used between communication nodes to share information related to spectrum utilization with each other. Here, if we refer to a base station and a plurality of terminals in its coverage area as wireless systems, information related to the use of shared resources (especially spectrum resources) within the wireless system may be referred to as inter-system shared information. The base stations can share information between each other through the air interface or other communication links, such as IP address, channel status, and the like. In the non-coordinating mode, as the name implies, the systems sharing the spectrum, that is, between the base stations, do not share information between the systems. Compared with the non-coordination mode, since the coordination mode can effectively reduce the conflict of resource usage, the coordination mode can usually better solve the interference between systems and achieve higher spectrum utilization.

Currently, in most spectrum sharing scenarios, there are no wired communication links (such as IP communication links) for information sharing between systems. Therefore, wireless communication links are often required between systems to exchange information. In some spectrum sharing scenarios, even if there is These wireless systems have wired communication links that can be used for information exchange between systems, but in the initial stage, these systems must first use wireless technology to learn each other's

Information such as IP address. On this basis, it is possible to interact with subsequent messages through wired communication in order to achieve coexistence between frequency sharing systems. IEEE 802.16h defines a mechanism for transmitting intersystems in Coexistence Messaging Interval (CMI). Sharing information. Here, we refer to a collection of systems that share spectrum resources and are adjacent to each other as the Coexistence Community. In the process of establishing a coexistence community, the new base station (IBS, Initialization Base Station, initial base station) will use CMI to transmit its related information to the existing OBS (Operation Base Station), so that the established coexistence The community knows the IBS and then collaborates with other base stations in the coexisting community to share spectrum resources.

As shown in Fig. 1, Fig. 1 schematically shows an inter-system shared information transmission mechanism defined in IEEE 802.16h. Among them, BS1 is the aforementioned IBS, which uses WiMAX for wireless communication, and BS2 is a base station in the coexistence, which is located in the WLAN. The dark circle in Fig. 1 indicates that it belongs to the BS1 subscriber station SS (Subscriber Station), and the light circle indicates the subscriber station SS subordinate to BS2. Among them, SS1-SS9 is subordinate to BS2, and is in an overlapping area of coverage of BS1 and BS2, which can receive messages from both BS1 and BS2. Similarly, SS10-SS11 is subordinate to BS1 and is also in the overlapping area of coverage of BS1 and BS2 and can receive messages from both BS1 and BS2. Here, for the sake of simplicity, only one system in the coexistence is shown. Since adjacent BSs cannot communicate directly with each other, the sharing of information between systems is carried out in two ways:

Method 1: First, BS1 broadcasts the inter-system shared information to the subscriber station SS (Subscriber Station) in its coverage area. For example, BS1 broadcasts its intersystem sharing in its own CX CMI DN (Coexistence-Coexistence Messages interval-Downlink, coexistence-coexistence message interval-downlink) Information, such as BSD (Base Station Describer) messages. When a plurality of foreign SSs (relative to BS1) located in the overlapping area, that is, SS1-SS9 in FIG. 1, receive the information shared between the systems, respectively, the inter-system shared messages are forwarded through the uplink thereof. BS2 to which to provide services.

Manner 2: BS1 broadcasts inter-system shared information to its own SS, such as SS10 and SSll, in its downlink; SS1 and SSll use CX_CMI_UN to transmit inter-system shared information to neighboring base station BS1 through uplink. .

In addition, 802.22 also defines a similar transmission mechanism for sharing information between systems. The network architecture and communication flow are similar to those in Figure 1. The difference is that the user station SS is located in the overlapping area, but the client device CPE, wherein the frame structure for sharing information between the systems is shown in FIG. 2. The system realizes the interaction of information sharing between systems between BSs by transmitting and receiving SCH (Super Frame Control Header) and CBP (Coexistence Beacon Protocol). As shown in FIG. 2, the superframe includes a preamble, a SCH, and a plurality of frames. The inter-system shared information of the cell is encapsulated in the SCH and broadcasted by the BS to the CPE. Each CPE that receives the SCH information carries the received SCH in the CBP packet and sends them to its own serving BS in the SCW (Self-Coexistence Window). By receiving the CBP packet, the neighboring BS can obtain related inter-system shared information, such as channels used by other cells, corresponding slot occupancy information, etc., thereby better implementing self-coexistence control between 802.22 systems.

It can be seen from the above that the existing inter-system shared information transmission mechanism consumes a large amount of spectrum. This is because the same system shared information is passed multiple times. For example, in 802.16h, each SS needs an uplink transmission opportunity to forward the same inter-system shared information to its serving BS; in 802.22, the same SCH information is also transmitted multiple times by multiple CPEs. . Therefore, under the existing information sharing mechanism between systems, the more the number of SS/CPEs in the overlapping area, the more spectrum resources are consumed. In this case, it is easy to cause the data transmission service to be available. With the dynamic change of the spectrum, the phenomenon of "spectrum breathing" occurs, which poses a great challenge to resource allocation and service QoS guarantee in spectrum sharing.

Furthermore, in 802.22, CBP is typically transmitted in the SCW in a manner that avoids contention based collisions or CDMA. Therefore, multiple transmissions of the same SCH will increase the collision of CBP in the contention-based access mode or increase the mutual interference of CBP in the CDMA-based access mode. In addition, the mutual interference and collision of CBP 4 messages will significantly increase the transmission delay of shared information between systems, resulting in a significant reduction in the timeliness of information shared between systems.

It can be seen that it is necessary to design an efficient and reliable transmission mechanism for sharing information between systems in order to better achieve resource sharing. Summary of the invention

The present invention provides a method, apparatus, and computer program for interactively sharing information between communication units to address, or at least alleviate, the above problems.

The present invention provides a method for interactively sharing information between communication units, wherein the communication units communicate with each other by at least one forwarding unit, the method comprising the steps of: when the forwarding unit receives at least When sharing information of a communication unit, determining whether the information needs to be forwarded to other communication units; if forwarding is required, notifying the other communication unit of receiving the information; after receiving notification from at least one of the forwarding units, The other communication unit selects an appropriate forwarding unit from the at least one forwarding unit to which the notification is sent to forward the information, and notifies at least the selected result to the selected forwarding unit; receives the other communication from the other communication After the unit's notification of forwarding, the selected forwarding unit forwards the received sharing information to the other communication unit.

The forwarding unit may receive shared information sent by at least one of the communication units in a broadcast, multicast, or multicast manner.

Preferably, the other communication unit is a communication unit that manages or provides a service to the forwarding unit. Preferably, the communication unit is a central control device of a point-to-multipoint system, optionally a base station or an access point.

Optionally, the forwarding unit is a wireless forwarding unit or a subscriber station or a client device CPE.

Preferably, the forwarding unit manages or provides services for the other communication unit that selects the appropriate forwarding unit or the communication unit that transmits the shared information to the forwarding unit.

Preferably, the shared information is related to spectrum utilization in a wireless network.

Optionally, the other communication unit notifies the selection result to all forwarding units to which the notification is sent in a broadcast manner, or notifies the selected forwarding unit in a unicast, multicast or multicast manner.

Wherein, the communication unit that has learned the shared information of each other constitutes a coexistence community, and the forwarding unit makes a decision on whether to need to be forwarded based on at least one of the following: whether the received shared information comes from a new communication unit other than the coexistence community; The received shared information comes from a communication unit in the coexisting community, at least a portion of which exceeds a set threshold.

Preferably, the other communication unit selects a suitable forwarding unit based on at least one of: channel quality, geographic location, power, mobility, security.

Preferably, said other communication unit that selects a suitable forwarding unit is a destination communication unit; said shared information is from a source communication unit; said forwarding unit is in an overlapping area covered by adjacent communication units.

According to another aspect of the present invention, a forwarding unit for mutually sharing information between communication units is proposed, wherein the communication units communicate with each other by at least one of the forwarding units, and the forwarding unit is configured to Upon receiving the shared information from the communication unit, determining whether the information needs to be forwarded to at least one other communication unit; for notifying the other communication unit of the receipt of the information if needed; for receiving When the notification about forwarding is from the other communication unit, the received shared information is forwarded to the other communication unit. According to another aspect of the present invention, a forwarding unit is provided for mutually sharing information between communication units, wherein the communication units communicate with each other by at least one of the forwarding units, and the forwarding unit includes: a pre-selection device, configured to: when receiving the shared information from the communication unit, determine whether the information needs to be forwarded to another communication unit; the communication device, configured to notify the other communication unit when the forwarding is needed Receiving information and forwarding the received shared information to the other communication unit upon receipt of a notification regarding forwarding from the other communication unit.

Optionally, the forwarding unit further includes a timing device, where the forwarding unit or the timing device thereof is further configured to start timing after notifying the receiving of the information by the other communication unit, when the threshold is exceeded, Upon receipt of the notification regarding forwarding from the other communication unit, the received sharing information is discarded by the forwarding unit or its communication device.

Optionally, the forwarding unit or its communication device determines whether to forward the information according to the notification about forwarding.

Optionally, the forwarding unit further maintains a criterion for determining whether the forwarding is required.

Optionally, the forwarding unit further includes a pool of pre-selection criteria for retaining criteria, and the pre-selection device determines, according to criteria in the pool of pre-selected criteria, whether the forwarding is required.

Preferably, the communication unit that has learned the sharing information of each other constitutes a coexistence community, the criterion comprising: whether the received sharing information is from a new communication unit other than the coexistence community; the received sharing information is from a communication in the coexistence community Unit, whether at least a portion of the information exceeds a set threshold.

Preferably, if the shared information is from a new communication unit other than the coexisting community, or the shared information is from a communication unit in the coexisting community and at least a portion of the information exceeds the threshold, then the forwarding is required.

Preferably, at least a part of the information is received by the forwarding unit from the same The time interval at which a communication unit shares information.

Optionally, the forwarding unit or its communication device notifies the other communication unit of the receipt of the information by a separate message or a slight manner.

According to another aspect of the present invention, a method for forwarding shared information between communication units is provided, wherein the communication units communicate with each other by at least one of the forwarding units, the method comprising the steps of:

When the forwarding unit receives the sharing information from the at least one of the communication units, determining whether the information needs to be forwarded to the at least one other communication unit;

Notifying the other communication unit of the receipt of the information, if necessary; forwarding the received shared information to the other communication unit upon receipt of a notification regarding forwarding from the other communication unit.

Preferably, the method further includes the step of starting timing after notifying the receipt of the information by the other communication unit, discarding the received share when the forwarding notification from the other communication unit has not been received beyond the set threshold information.

Optionally, it is determined according to the maintenance criteria whether the forwarding needs to be performed. The criteria include at least one of: whether the received shared information comes from a new communication unit other than the coexisting community; the received shared information comes from a communication unit in the coexistence community, at least a portion of the information exceeds a set Threshold.

According to another aspect of the present invention, there is provided a communication unit for interactively sharing information with other communication units, the communication unit communicating with the other communication unit by at least one forwarding unit, the communication unit for After receiving the notification of the received sharing information from the forwarding unit, selecting an appropriate forwarding unit from the at least one forwarding unit that sends a notification to the terminal to forward the information; a selected forwarding unit; for receiving the shared information from the selected forwarding unit.

According to another aspect of the present invention, there is provided a communication unit for interactively sharing information with other communication units, the communication unit communicating with the other communication unit by at least one forwarding unit, the communication unit comprising: Optional device After receiving the notification from the forwarding unit that the shared information is received, selecting a suitable forwarding unit from the at least one forwarding unit that sent the notification to forward the information; the communication device, The selection result is notified at least to the selected forwarding unit and receives the shared information from the selected forwarding unit.

Optionally, the communication unit or the communication device notifies the selection result to all forwarding units to which the notification is sent by broadcasting, or notifies the selected forwarding to the selected forwarding in a unicast, multicast or multicast manner. unit.

Preferably, the communication unit or its final selection device selects at least one of the following forwarding units based on one of: channel quality, geographic location, power, mobility, security.

According to another aspect of the present invention, there is provided a method for interactively sharing information with other communication units, the communication units being in communication by at least one forwarding unit, the method comprising the steps of:

After receiving the notification from the at least one of the forwarding units to receive the shared information, selecting an appropriate forwarding unit from the at least one forwarding unit to which the notification is sent to forward the information;

The selection result is notified at least to the selected forwarding unit, and the shared information from the selected forwarding unit is received.

According to another aspect of the present invention, a system for sharing information between communication units is provided, which includes the above-described forwarding unit and communication unit.

According to another aspect of the present invention, a computer program product is provided, comprising computer executable program code for performing the above method, forwarding unit, communication unit, or system.

According to another aspect of the present invention, there is provided a computer readable storage medium having stored thereon the computer executable program code.

According to the solution provided by the present invention, since only a part of the forwarding unit (i.e., the selected forwarding unit) forwards the shared information, instead of forwarding each of the forwarding devices that receive the shared information as in the prior art, the present invention provides Program can Effectively solving the same multiple transmission problem of shared information significantly reduces the resources needed to deliver such information.

Furthermore, by using the solution of the present invention, the "spectral breathing" phenomenon in the prior art can be solved, because the solution of the present invention requires only a small amount of resources for communication of shared information, thereby alleviating the dynamics of resources for data services. Variety. In other words, the QoS of the data service can be better guaranteed.

Moreover, the solution of the present invention can greatly reduce the transmission conflict of shared information, thereby reducing the transmission delay of packets caused by collisions, and thus can better ensure the timeliness of these shared information. In addition, the reliability of the transfer of shared information is improved by a dual selection mechanism that takes into account various factors. DRAWINGS

The above and other advantages of the present invention will become more apparent from the detailed description of the appended claims. It is to be understood that the above-described drawings and the examples of the present invention are only for the purpose of describing the principles of the present invention, and should not be construed as limiting the scope of the invention, the application, and the like. among them:

Fig. 1 schematically shows an inter-system shared information transmission mechanism specified in IEEE 802.16h;

Figure 2 is a diagrammatic view of a frame structure for carrying information shared between systems in 802.22;

3 is a flow chart diagrammatically showing a method for implementing inter-system information interaction based on dual selection of forwarding user stations, in accordance with one embodiment of the present invention;

4 is a schematic diagram showing a final selection mechanism for forwarding a subscriber station according to an embodiment of the present invention;

Figure 5 is a block diagram schematically showing the structure of a forwarding subscriber station in accordance with one embodiment of the present invention;

FIG. 6 is a block diagram schematically showing the structure of a destination base station for receiving information shared between systems according to an embodiment of the present invention. detailed description

The present invention proposes a scheme for efficient and reliable transmission of shared information based on dual selection of forwarding SS sets. Specifically, the SS that forwards the information is determined by receiving the forwarding SS of the shared information and the two selections of the destination BS (base station) that will receive the information, thereby reducing the problem that the same shared information is transmitted multiple times. This will be described in further detail below.

The network environment to which the new scheme proposed by the present invention is applied is the same as that shown in FIG. However, it should be noted that the network architecture shown in Figure 1 is merely exemplary. It should be understood by those skilled in the art that the number of BSs and SSs in Fig. 1 varies with a specific application environment, and each BS may be in the same type or a different type of network. In addition, although the base station BS and the subscriber station SS are taken as an example for illustration, this does not mean that the application of the present invention is limited thereto. For example, the BS can be replaced with other types of communication nodes such as an access point AP, and the SS can be replaced with a CPE, a UE, and the like. In fact, the present invention can also be applied to a network environment in which communication nodes need to share information with each other but cannot directly communicate, and some intermediate devices are required to forward the shared information. Such a network environment can be wired or wireless. The information that needs to be shared with each other in this case is the shared information or shared information between the systems in the above.

3 is a flow chart diagrammatically showing a method for implementing inter-system information interaction based on dual selection of forwarding subscriber stations, in accordance with one embodiment of the present invention. Here, for convenience of explanation, only two BSs are shown and there are two SSs in the overlap region. 5 and 6 are schematic block diagrams respectively showing a destination base station for forwarding a subscriber station and receiving information shared between systems, according to an embodiment of the present invention. Next, we still take each BS as a system, and the BSs share the inter-system information with each other as an example. The method flow shown in FIG. 3 will be described with reference to FIG. 5 and FIG. 6. In addition, FIG. 3 only shows the case where the SS is subordinate to the packet forwarding task, that is, the mode 1 of FIG. 1; the second mode, that is, the SS is subordinate to the source base station. The case of forwarding a task is similar to this. For the specific process, see Method 1.

As shown in Fig. 3, first as the source base station in Fig. 1, BS1 broadcasts a message containing information shared between systems (e.g., as specified in 802.16h or 802.22 in the prior art).

After receiving the inter-system shared message via the communication device, each SS, SS1 and SS2, respectively, through its preselected device, uses the criteria maintained in its preselected criteria pool to perform a "preselection mechanism" to determine whether it should act as a forwarding SS. . A detailed description of the "pre-selection mechanism" will be given below. If both SS1 and SS2 decide to act as the forwarding SS, a "send request for sharing information between systems" message is sent through the communication device to notify the destination BS2 that the inter-system sharing information to be delivered has been received. It should be noted that, compared with the message used by the SS in the prior art to transmit information shared between systems, the "transmission request for sharing information between systems" is small, usually only a few bits, and may only include the source base station BS1. Logo. Alternatively, SS1 and SS2 can also notify BS2 in piggyback style. In other words, each SS can add a specific field to the ordinary data packet to carry the content in the "send request for sharing information between systems" mentioned above. The advantage of this is that the overhead can be further reduced because separate message transmission requires additional frame control headers, channel codecs, redundancy check and other resources. Here, in contrast to the prior art SS direct forwarding inter-system shared message, we can also notify the SS that has passed the pre-selection process that its service BS has a system-to-transfer inter-system shared message as a "pre-handshake". process.

Subsequently, when the communication device of BS2 receives the "send request for sharing information between systems" message from the SS or the notification in the piggyback mode, BS2 will adopt the "end-selection mechanism" through its final selection device, combined with its final criterion pool. The guidelines are maintained to determine the appropriate forwarding SS. Details of the "final selection mechanism" will be described in detail below. Here, we assume that SS2 is selected as the appropriate forwarding SS.

Thereafter, the communication device of BS2 adds the selected final result to the appropriate message. For example, as shown in FIG. 3, the communication device of BS2 encapsulates the selection result in ULMAP. In the message. Subsequently, BS2 allocates an uplink opportunity for the selected forwarding SS. Then, BS2 broadcasts a message carrying the selection result to SS1 and SS2.

The communication device of each SS knows the corresponding selection result based on the received broadcast message from BS2, and the selected SS will be responsible for the actual transmission of the shared information between the systems (for forwarding by its communication device). Here, according to the received broadcast message, SS1 finds that it is not selected, so it deletes the reserved inter-system shared message and updates the corresponding parameters (for example, the time when the shared information from the base station is received is updated for the current reception) Time, in order to calculate the time interval thereafter, for use in the subsequent selection process of forwarding SS. In contrast, based on the received broadcast message, if SS2 finds that it is selected as the forwarding SS, its communication device will transmit the relevant information in the assigned uplink opportunity. That is, only the selected SS sends the corresponding shared information in subsequent uplink opportunities.

Alternatively, in the flowchart shown in Fig. 3, BS2 may also only notify the selected SS of the message containing the selection result in a unicast manner instead of broadcasting to each SS. In this case, as shown in Fig. 5, a timing device can be set at each SS, and a specific threshold is set for it according to a specific application environment. Thus, when the SS issues a message to BS2 notifying that it has shared information between systems to be transmitted, the timing device is started. If the timing at the SS has exceeded the threshold but has not received a response to the "Request to Send Information Between Systems" message, the communication device directly deletes the reserved intersystem sharing information.

It should be noted that although BS2 selects only one forwarding SS, SS2, in the example shown in FIG. 3, this is for convenience of explanation. In fact, BS2 can select an appropriate number of forwarding SSs according to specific application conditions to forward the received information shared between the systems to BS2, which can improve the reliability of communication between systems. Moreover, although in the example herein, SS1 and SS2 are only located in the overlapping area of two base stations of BS1 and BS2, in practical applications, the environment of the network is often much more complicated, and the SS is likely to be located at the overlap of multiple base stations. within the area. In this case, if the SS in the overlapping area of multiple base stations is suitable for forwarding according to the set criteria SS, then it can also forward shared information between systems to multiple base stations.

It should also be noted that although BS2 is referred to herein as a destination base station, those skilled in the art should understand that the "purpose" herein is for the current forwarding operation of the SS, and in fact it is not necessarily the shared information above. The ultimate or only destination.

Moreover, those skilled in the art will appreciate that the flowchart shown in FIG. 3 is exemplary, that some of the steps may be combined and/or split as needed, and that the order between the partial steps may be changed. For example, BS2 can allocate the corresponding uplink opportunity either after notifying the selected SS or at the same time. Similarly, the structure of the BS shown in Figures 5, 6 is also exemplary, and in addition to the components shown in the figures, it may include components for achieving its intended function, or specific additional functionality. Moreover, these components can be further split or combined according to the needs of the application and can be located at the same physical node or at separate nodes depending on the needs of the application.

As can be seen from the above and FIG. 3, the entire selection process for forwarding SS is divided into two steps: a "pre-selection mechanism" executed at the SS, and a "pre-selection mechanism" executed at the BS. These two mechanisms are described in detail below.

As described above, each preselected device that receives the SS sharing message between systems performs a "preselection mechanism" to determine whether it should act as a forwarding SS, as shown in the following equation:

Dp _re —FS ~

(1) Here, s _new _ _BS indicates whether the received inter-system shared message comes from a new external BS other than the coexisting community. If yes, the value of S _new _ _BS is 1, otherwise it is 0. T _Interval represents the time interval for sharing messages between systems from the same BS. T _Thresh . _Ld is a predetermined threshold and can be set by a tradeoff between spectral consumption and the timeliness of sharing information transmission between systems. Understandably, the set T _Thresh . The smaller the value of _ld , the more spectrum will be consumed, but the higher the reliability.

It can be known from equation (1) that if the value of S _new - _BS is 1, that is, the SS receives inter-system sharing information from a new external BS other than the coexistence community, D _Pre _ _FS is "True", that is, its value is 1, indicating that the SS passed the pre-selection process. In other words, it decides to act as a forwarding SS. In addition, if the value of S _new _ _BS is 0, that is, the SS receives inter-system shared information from the existing BS in the coexistence community, but if the value of T _Interval exceeds the set threshold, D _Pre _ _FS It is "true". When D _Pre _ _FS is "true", as shown in Figure 3, the SS will inform its serving BS (through a separate message or piggybacking mode) that there is inter-system sharing information to be sent. If D _Pre _ _FS is "false", it means that the SS does not pass the pre-selection process, and the SS will directly exit the transmission process of sharing information between systems.

The "finalization mechanism" performed by the termination device of the BS (for example, BS2 in Figs. 1, 3) mentioned above considers various factors including channel quality (geographical location), SS remaining energy, mobility, SS security and so on, as shown in Figure 4. In Fig. 4, a schematic diagram of a termination mechanism for forwarding a subscriber station in accordance with one embodiment of the present invention is schematically illustrated. A plurality of SSs that pass the preselection mechanism are shown in FIG. Wherein, the uppermost ring represents a subset of the forwarding SS whose channel quality is higher than a predetermined threshold T _ch _ _quality ; the lower right circle represents a subset of the forwarding SS whose remaining energy is higher than a predetermined threshold T _Energy ; The square ring indicates that the moving speed is lower than a predetermined threshold T _M . _Bility forwards a subset of SS. Here, in addition to the moving speed, the mobility may also include the frequency of the movement or the like.

For example, S1 is located in the common overlapping area of the above three rings, that is, S1 satisfies the requirements of three factors, and then S1 is selected as the best forwarding SS. S2 is located in an overlapping area where both channel quality and mobility are common, that is, S2 satisfies the requirements of the above two factors, and then S2 is selected as the second preferred forwarding SS. Similarly, S3 and S4 can also be selected as the second preferred forwarding SS. The S5-S10 can meet the requirements of one factor, and they will be selected as the third preferred forwarding SS.

If there is an SS that satisfies the above three factors, that is, S1, BS2 can directly select S1 as the forwarding SS. However, if no SS can satisfy the above three factors at the same time, that is, no SS is located in the common overlapping area of the three rings in FIG. 4, the second preferred forwarding SS is selected for transmitting the information shared between the systems, and This The choice can be based on the actual application. For example, if the importance of energy is lower than the other two factors, BS2 will select S2 as the forwarding SS to deliver inter-system shared information. If the best forwarding SS and the second preferred forwarding SS are not found, the BS will randomly select one or several (the appropriate number of) SSs from the third preferred forwarding SS as the forwarding SS and request it to send the corresponding system. Share information between.

It should be noted that channel quality can be considered in two ways: one is the channel quality between the SS and the external BS, and the other is the channel quality between the SS and its serving BS. That is, the forwarding SSs with better channel quality are those that can simultaneously satisfy the channel quality requirements between the SS and the external BS, and between the SS and its serving BS. Since the channel quality is related to the geographic location of the SS relative to its J BS and the external BS, in some cases, the geographical location of the SS can also be considered as an alternative factor in the quality of the channel.

A detailed description of the idea of the present invention is given above, which can be used not only to solve the problem of sharing information transmission mechanisms between systems specified in 802.16h and 802.22, but also to share information with communication nodes. Transmission, especially the network environment, applications, standards or specifications related to the transmission of information related to spectrum utilization in a wireless environment. In addition, those skilled in the art can understand that the idea of the present invention can also be applied to any communication party that needs to exchange information related to resource sharing with each other, but cannot directly communicate. Such a communication party may be a terminal device, a network node, or an upper layer application running on some devices and nodes. The "information related to resource sharing" mentioned here refers to various information that needs to be exchanged and shared between the above communicating parties.

Moreover, the aspects of the present invention can be implemented by separate or centralized software, hardware, or a combination thereof. In addition, according to the above disclosure, those skilled in the art can make various changes, substitutions, combinations, splits, and the like according to the specific network application environment and needs, as long as they do not deviate from the idea of the present invention, they fall into the present. Within the scope of protection of the invention.

Claims

Rights request

A method for interactively sharing information between communication units, wherein the communication units communicate via at least one forwarding unit, the method comprising the steps of: when the forwarding unit receives at least one communication When the unit shares the information, it is determined whether the information needs to be forwarded to at least one other communication unit;

Notifying the other communication unit of the receipt of the information if forwarding is required; after receiving the notification from the at least one of the forwarding units, the other communication unit selects the appropriate one of the at least one forwarding unit to which the notification is sent The forwarding unit is configured to forward the information, and notify at least the selected forwarding unit of the selection result;

Upon receipt of the notification from the other communication unit, the selected forwarding unit forwards the received shared information to the other communication unit.

2. The method of claim 1, wherein the communication unit is at least one of a wireless communication unit, a base station, or an access point, or the forwarding unit is at least one of a wireless forwarding unit, a subscriber station, or a client device. One.

A method according to any of the preceding claims, wherein the forwarding unit is serviced or managed by a communication unit that transmits the shared information to the forwarding unit or a communication unit that receives the notification of the forwarding unit.

4. The method of claim 1, wherein the shared information is related to spectrum utilization in a wireless network.

The method according to any of the preceding claims, wherein the other communication unit broadcasts the selection result to all forwarding units to which the notification has been sent, or in a unicast or multicast or multicast manner. The result of the selection is notified to the selected forwarding unit.

6. The method according to any of the preceding claims, wherein the communication unit that has learned the sharing information of each other constitutes a coexistence community, and the forwarding unit makes a decision as to whether forwarding is required based on at least one of the following: Whether the shared information comes from A new communication unit other than the coexistence; the received shared information comes from the communication unit in the coexistence, and at least a portion of the information exceeds a set threshold.

The method of any of the preceding claims, wherein the other communication unit selects a suitable forwarding unit based on at least one of: channel quality, geographic location, power, mobility, security.

A forwarding unit for mutually sharing information between communication units, wherein the communication units communicate with each other by at least one of the forwarding units, and the forwarding unit is configured to receive at least one of the When the communication unit shares information, it is determined whether the information needs to be forwarded to at least one other communication unit; for notifying the other communication unit of the reception of the information if necessary; for receiving from the other communication unit When the notification about forwarding is forwarded, the received shared information is forwarded to the other communication unit.

9. The forwarding unit according to claim 8, wherein the forwarding unit is further configured to start timing after notifying the other communication unit of the receipt of the information, and when the threshold is exceeded, the When the other communication unit is notified of the forwarding, the received sharing information is discarded; the forwarding unit optionally further retains a criterion for determining whether the forwarding is required.

A forwarding unit for mutually sharing information between communication units, wherein the communication units communicate with each other by at least one of the forwarding units, the forwarding unit comprising:

a pre-selection means, configured to: when receiving the shared information from the at least one of the communication units, determine whether the information needs to be forwarded to the at least one other communication unit; the communication device, configured to notify the other when the forwarding is needed Receiving, by the communication unit, the information, and upon receiving a notification about forwarding from the other communication unit, forwarding the received shared information to the other communication unit.

11. The forwarding unit of claim 10, further comprising: timing means for starting timing after notifying receipt of said information by said other communication unit, not exceeding said threshold value Other communication units related to forwarding At the time of notification, the received communication information is discarded by the communication device; the forwarding unit optionally further includes a pre-selection criteria pool for maintaining criteria, and the pre-selection device determines whether it needs to be performed according to criteria in the pre-selection criteria pool. Said forwarding.

The forwarding unit according to any one of claims 8 to 11, wherein the communication unit that has learned the mutual sharing information constitutes a coexistence community, and the forwarding unit makes a decision as to whether forwarding is required based on at least one of the following : Whether the received shared information comes from a new communication unit other than the coexistence; the received shared information comes from the communication unit in the coexistence, and at least a part of the information exceeds a set threshold.

13. A method for forwarding shared information between communication units, wherein said communication units communicate with each other by at least one of said forwarding units, said method comprising the steps of:

14. A communication unit for interactively sharing information with other communication units, the communication unit communicating with the other communication unit via at least one forwarding unit, the communication unit for receiving at least one of the forwardings After receiving the notification of the shared information, the unit selects an appropriate forwarding unit from the at least one forwarding unit that sends the notification to forward the information; and is configured to notify at least the selected forwarding unit of the selection result; Receiving the shared information from the selected forwarding unit.

The communication unit according to claim 14, wherein the communication unit notifies the selection result to all forwarding units to which the notification has been sent, or notifies the selection result to the unicast or multicast or multicast method. The selected forwarding unit.

16. A communication unit according to claim 14 or 15, the communication unit selecting a suitable forwarding unit based on at least one of: channel quality, geographic location, power Rate, mobility, security.

17. A communication unit for interactively sharing information with other communication units, the communication unit communicating with the other communication unit via at least one forwarding unit, the communication unit comprising:

a finalizing device, configured to, after receiving the notification of the sharing information from the at least one of the forwarding units, select an appropriate forwarding unit from the at least one forwarding unit that sends a notification to forward the information ;

And a communication device, configured to notify at least the selected forwarding unit of the selection result, and receive the shared information from the selected forwarding unit.

The communication unit according to claim 17, wherein the communication device notifies the selection result to all forwarding units to which the notification has been sent in a broadcast manner, or selects the result in a unicast or multicast or multicast manner. Notify to the selected forwarding unit.

19. A communication unit according to claim 17 or 18, wherein said finalizing means selects at least one of the following forwarding units based on one of: channel quality, geographic location, power, mobility, security.

The communication unit according to any one of claims 14 to 19, wherein the shared information is related to spectrum utilization in a wireless network.

21. A method for interactively sharing information with other communication units, wherein the communication units communicate via at least one forwarding unit, the method comprising the steps of:

A system for interactively sharing information between communication units, comprising the forwarding unit according to any one of claims 8 to 12, and the communication unit according to any one of claims 14 to 20.

23. A computer program product comprising computer executable program code for performing the method of any one of claims 1 to 7 or claim 13 or 21, or as claimed in any one of claims 8 to 12. The forwarding unit, or the communication unit according to any one of claims 14 to 20, or the system according to claim 22.