WO2009079842A1

WO2009079842A1 - A method and device of controlling the data packet transmission in wireless relay network

Info

Publication number: WO2009079842A1
Application number: PCT/CN2007/003683
Authority: WO
Inventors: Dongyao Wang; Jimin Liu; Gang Shen
Original assignee: Alcatel Shanghai Bell Company, Ltd.; Alcatel Lucent
Priority date: 2007-12-19
Filing date: 2007-12-19
Publication date: 2009-07-02
Also published as: CN101878619B; CN101878619A

Abstract

A method and device of controlling the data packet transmission in a wireless relay network are provided, wherein the network apparatus receives the input data packets from the next hop network apparatus, and determines the output QoS information of the input data packets; in one data packet transmission procedure, the network apparatus using the distributed network resources, basing on the priority of the QoS information included in plural input data packets from the former hop network apparatus, sends parts of or all of the input data packets form the former hop network apparatus to the next hop network apparatus.

Description

Method and device for controlling data packet transmission in wireless relay network

The present invention relates to a wireless relay network, and more particularly to a network device in a wireless relay network. Background technique

In recent years, multi-hop networks are in a booming stage in wireless communication networks. In a multi-hop network, the source device does not need to communicate directly with the destination device, and the user data can be relayed via the relay station during transmission from the source device to the destination device. Specifically, after receiving the data packet from the last hop network device, the relay station performs corresponding processing on the data packet and forwards the data packet to the next hop network device until the data packet finally reaches the destination device. Compared with traditional single-hop networks, multi-hop relay networks have great advantages in terms of flexibility and reliability, and multi-hop relay networks can expand the coverage of the entire wireless communication network.

In existing multi-hop wireless relay networks, architecture based on per-flow state is usually adopted.

(per-flow stateful architecture) to manage the transmission of business flows. Specifically, each relay station includes multiple queues according to the type of the received packet service, and each queue includes one or more data packets belonging to the same service type, that is, each queue corresponds to one service flow. . Further, when the relay station sends each service flow to the next hop network device, a connection needs to be established, and each connection has corresponding connection identification information (CID) and QoS λ-self,

Specifically, the data packet transmission in the uplink is taken as an example. After receiving the data packet from the last hop network device, the relay station discharges the data packet into the connection identifier according to the connection identification information in the data packet. The service flow queue corresponding to the information is sent to the next hop network device by using the acquired bandwidth resource according to the subsequent scheduling situation. More specifically, in a data packet transmission process, the relay station first requests a bandwidth resource for transmitting a data packet to the next hop network device, and correspondingly receives the bandwidth resource allocated from the next hop network device. Then, the relay station uses the limited bandwidth resources allocated by the next hop network device to obtain the QoS priority high service flow according to the priority of the QoS information on each connection corresponding to each service flow. Packets are sent to the next via the corresponding connection Jump network devices.

Obviously, the above-described per-flow state-based architecture for managing traffic flow transmission according to the prior art has certain drawbacks. Since the relay station sends each service flow to the next hop network device, a connection needs to be established. As the received service type of the data packet from the last hop network device increases, the entire multi-hop wireless relay network will Adding a lot of connections, therefore, makes the topology of the entire system difficult to maintain and the flexibility of the entire network scale will be greatly limited. Summary of the invention

In order to solve the above disadvantages of the prior art, the present invention proposes a method and apparatus for controlling data packet transmission in a wireless relay network. The network device (relay station or base station) receives the input data packet from the last hop network device and determines the output QoS information of the input data packet. In a specific one-time data packet transmission process, the network device utilizes the allocated corresponding network resource according to the priority order of the output QoS information included in the plurality of input data packets from the last hop network device, and transmits the corresponding network resource. Part or all of the plurality of input data packets from the last hop network device to the next hop network device.

According to a first aspect of the present invention, a method for controlling data packet transmission in a network device of a wireless relay network is provided, comprising the steps of: i. determining input data from a last hop network device Output QoS information of the packet; wherein, the method further includes the following steps: a. utilizing the allocated network resource according to the priority order of the output QoS information included in the plurality of input data packets from the last hop network device, Sending some or all of the plurality of input data packets from the last hop network device to the next hop network device.

According to a second aspect of the present invention, a control apparatus for controlling data packet transmission in a network device of a wireless relay network is provided, including: first determining means, configured to determine a network from a last hop The output QoS information of the input data packet of the device, further comprising: a first sending device, configured to use the priority order of the output Qo S information included in the plurality of input data packets from the last hop network device Corresponding network resources allocated, sent in the plurality of input data packets from the last hop network device Part or all of the packet to the next hop network device.

In the present invention, the data packets received by the network device from the last hop network device are all discharged into a queue, and the network device no longer discharges the data packets of different service types into different according to the service type of the received data packet. In the traffic flow queue, therefore, the technical solution of the present invention is applied to simplify the function of the relay station in the wireless relay network.

In addition, when a relay station accesses the multi-hop wireless relay network, the relay station only needs to establish two connections with the previous hop network device and the next hop network device for data packet transmission, and no longer according to the received The different service types of the data packets from the last hop network device establish a Doner connection to respectively transmit data packets of different service types. Therefore, applying the technical solution of the present invention makes the topology of the entire network system and the network scale flexible. Sexuality has been greatly improved. DRAWINGS

Other features, objects, and advantages of the present invention will become more apparent from the detailed description of the accompanying drawings.

Figure 1 shows a schematic diagram of the logical division of a relay station in accordance with the prior art.

2 shows a network diagram of packet transmission with QoS guarantee in a wireless relay network in accordance with the present invention;

3 illustrates a flow chart of a method for controlling data packet transmission in a network device of a wireless relay network, in accordance with an embodiment of the present invention;

4 is a block diagram showing the structure of a control device for controlling data packet transmission in a network device of a wireless relay network according to an embodiment of the present invention.

In the figures, the same or similar reference numerals denote the same or similar components. detailed description

The invention is described in detail below with reference to the accompanying drawings:

As shown in Figure 1, the relay station of the wireless relay network can be logically divided into two parts: a core relay station and an access relay station. The core relay station is used to communicate with core relay stations of other relay stations in the wireless relay station network, and the access relay station is used to access and provide services to the mobile terminal. Specifically, the relay link shown in FIG. 1 is used to communicate with a core relay station in a previous hop relay station and a core relay station in a next hop relay station, respectively, for providing access to the accessed mobile terminal. service.

2 shows a network diagram of packet transmission with QoS guarantee in a wireless relay network in accordance with the present invention.

Mobile terminal 0, mobile terminal 0, relay station 1, relay station 2, and base station 3 are shown in FIG. It will be understood by those skilled in the art that although FIG. 2 shows only two relay stations, in a specific application, a plurality of relay stations may be included in the wireless relay network. Although only two mobile terminals are shown in Fig. 2, in a specific application, a plurality of mobile terminals may be included in the wireless relay network.

The technical solution of the present invention will be separately described below for both the uplink and downlink scenarios.

The first scenario: packet uplink transmission

First, the relay station 1 receives the data packets from the mobile terminal 0 and the mobile terminal 0. Further, the data packets received by the relay station 1 from the mobile terminal 0 and the mobile terminal 0 may be the same type of data packets, or may be different. Type of packet.

Specifically, when the relay station 1 receives a data packet from the mobile terminal 0 or the mobile terminal 0, it first determines the output QoS information of the input data packet. Since the data packet is from the mobile terminal 0 or the mobile terminal 0, the QoS information related thereto is not included in the data packet, and further, the QoS information of the data packet is composed of the mobile terminal 0 or the mobile terminal 0' and the relay station 1 The service QoS information carried by the connection corresponding to the transmission of the data packet is determined. The relay station 1 remaps the service QoS information carried by the connection into the output QoS status information of the input packet and embeds it into the received input packet from the mobile terminal 0 or the mobile terminal 0.

After the relay station 1 embeds the output QoS information into the data packet, the relay station 1 arranges the QoS information according to the connection identification information of the data packet and the priority of the output QoS information into the corresponding queue of the data packet to be transmitted. Further, in the present embodiment, the relay station 1 The next hop network device only has the relay station 2, therefore, the relay station 1 only contains one data packet queue to be sent, and the data packets in the to-be-sent data packet queue are sent to the relay station 2. Of course, if the relay station 1 is connected to multiple next hop network devices, the relay station 1 has a data packet queue to be transmitted corresponding to each next hop network device.

At the same time, the relay station 1 transmits, according to the priority order of the QoS information of all the data packets in the data packet queue to be transmitted, the corresponding network resource (for example, bandwidth resource) allocated by the relay station 2, and transmits one or the network resource. Multiple packets to relay station 2. Further, before the data packet is transmitted, the data packet is encapsulated by the connection identifier information (CID), where the connection identifier information is used to indicate which network device the next hop of the data packet is (this embodiment) The next hop network device of the relay station 1 is the relay station 2).

Further, the network resource allocated by the relay station 2 to the relay station 1 for transmitting the remaining data packets in the queue of the data packet to be transmitted according to the network resource request information of the relay station 1 is generally limited, and the network resources allocated by the relay station 2 to the relay station 1 are limited. When there are few, the relay station 1 can only send the data packet with higher priority of the QoS information in the to-be-sent data packet queue to the relay station 2 according to the priority order of the QoS information of the data packets in the data packet queue to be transmitted. Of course, in an extreme case, the relay station 2 allocates sufficient network resources to the relay station 1, and at this time, the relay station 1 can send all the data packets in the queue of its pending packet to the relay station 2.

Further, the relay station 1 embeds network resource request information in one or more data packets transmitted to the relay station 2 for requesting the relay station 2 for network resources for transmitting the remaining data packets in the data packet queue to be transmitted. In the case where the relay station 1 simultaneously transmits a plurality of data packets to the relay station 2, the relay station 1 can embed the network resource request information in any one of the plurality of data packets. Preferably, the relay station 1 can embed the network resource request information in the first data packet of the plurality of data packets.

After the relay station 2 receives one or more data packets from the relay station 1, decapsulating the one or more data packets, and extracting network resource request information from the one or more data packets, and according to the network resources The request information allocates corresponding network resources to the relay station 1. Further, the corresponding network resource allocated by the relay station 2 to the relay station 1 may be part of all network resources requested by the relay station 1, and of course, rich in network resources. In this case, the relay station 2 may allocate all the network resources requested by the relay station 1 to the relay station 1.

In a variant, the relay station 2 can periodically allocate network resources to the relay station 1, in which case the relay station 1 does not need to embed network resource request information in each of the data packets transmitted to the relay station 2 for use in the relay station. 2 Requesting network resources for transmitting the remaining packets in the queue of packets to be sent.

At the same time, the relay station 2 determines the output QoS information of one or more input packets from the relay station 1.

Subsequently, the relay station 2 arranges the connection identification information of the one or more data packets and the priority of the output QoS information into the corresponding queue of data packets to be transmitted. In this embodiment, the next hop network device of the relay station 2 has only the base station 3. Therefore, the relay station 2 only contains one data packet queue to be transmitted, and the data packets in the to-be-sent data packet queue are sent to the base station 3.

At the same time, the relay station 2 transmits, according to the priority order of the QoS information of all the data packets in the data packet queue to be transmitted, the corresponding network resource (for example, the bandwidth resource 'source) allocated by the base station 3, and matches the network resource. One or more data packets to base station 3. Further, before the data packet is sent, the data packet is encapsulated by the connection identifier information (CID), where the connection identifier information is used to indicate which network device the next hop of the data packet is (this embodiment) The next hop network device of the relay station 2 is the base station 3).

Of course, the relay station 1 embeds network resource request information in one or more data packets transmitted to the relay station 2 for requesting the relay station 2 for the network resource for transmitting the remaining data packets in the data packet queue to be transmitted, the relay station 2 In the one or more data packets transmitted to the base station, network resource request information is also embedded for requesting the base station 3 for network resources for transmitting the remaining data packets in the data packet queue to be transmitted. For the sake of brevity, we will not repeat them here.

After the base station 3 receives one or more data packets from the relay station 2, decapsulating the one or more data packets, and extracting network resource request information from the one or more data packets, and according to the network resources The request information allocates corresponding network resources to the relay station 2. Specifically, it is consistent with the allocation of network resources by the relay station 2 for the relay station 1, for simplicity See, I won't go into details here.

In a variant, the base station 3 can periodically allocate network resources to the relay station 2, in which case the relay station 2 does not need to embed network resource request information in each data packet transmitted to the base station 3 for use in the base station. 3 Requesting network resources for transmitting the remaining packets in the queue of packets to be sent.

At the same time, after receiving the data packet from the relay station 2, the base station 3 discards the QoS information contained in the data packet. Case 2: Packet downlink transmission

When the data packet is downlink transmission, first, the base station 3 receives the data packet from the wireless access controller (WAC, Wireless Access Controller), and further, the base station 3 receives the wireless access controller (WAC, Wireless Access). The controller of the Controller can be the same type of data packet or a different type of data packet.

Specifically, when the base station 3 receives the data packet from the wireless access controller (WAC, Wireless Access Controller), it first determines the output QoS information of the input data packet. Since the data packet is from a Wireless Access Controller (WAC), the QoS information related thereto is not included in the data packet. Further, the QoS information of the data packet is used by the wireless access controller (WAC, The service QoS information carried by the connection between the Wireless Access Controller and the base station 3 is determined. The base station 3 remaps the service QoS information carried by the connection into the output QoS information of the data packet and embeds it into the received data packet from the Wireless Access Controller (WAC).

Then, the base station 3 arranges the connection identification information of the data packet and the priority of the output QoS information into the queue of the corresponding data packet to be transmitted. Further, in this embodiment, the next hop network device of the base station 3 has only the relay station 2, therefore, the base station 3 only includes one data packet queue to be sent, and the data packets in the to-be-sent data packet queue are sent to the relay station. 2. Of course, if the base station 3 is connected to multiple next hop network devices, the base station 3 has a to-be-sent packet queue corresponding to each next hop network device.

At the same time, the base station 3 is based on the QoS information of all the data packets in the data packet queue to be transmitted. The priority order, using existing network resources (eg, bandwidth resources), sends one or more data packets matching the network resources to the relay station 2. Further, before the data packet is sent, the data packet is encapsulated by the connection identifier information (CID), where the connection identifier information is used to indicate which network device the next hop of the data packet is (this embodiment) The next hop network device of the base station 3 is the relay station 2).

Specifically, after receiving one or more data packets from the base station 3, the relay station 2 decapsulates the one or more data packets, and determines a specific process for outputting the QoS information, as described above, in the uplink, the relay station 2 Determining a description of the new QoS information for one or more data packets from the relay station 1. For the sake of brevity, we will not repeat them here.

After the relay station 2 determines the output QoS information of one or more data packets from the base station 3, the relay station 2 discharges the QoS information based on the connection identification information of the one or more data packets and the priority of the output QoS information. In the queue of packets to be sent. In this embodiment, the next hop network device of the relay station 2 has only the relay station 1, and therefore, the relay station 2 only contains one data packet queue to be transmitted, and the data packets in the to-be-sent data packet queue are sent to the relay station 1.

At the same time, the relay station 2 uses the existing network resources (for example, bandwidth resources) to send one or more data packets matching the network resources according to the priority order of the QoS information of all the data packets in the data packet queue to be sent. Relay station 1. Further, before the data packet is transmitted, the data packet is encapsulated by the connection identifier information (CID), where the connection identifier information is used to indicate which network device the next hop of the data packet is (this embodiment) The next hop network device of the relay station 2 is the relay station 1).

When the relay station 1 receives one or more data packets from the relay station 2, it decapsulates the one or more data packets and discards the QoS information in the one or more data packets.

Finally, the relay station 1 will send the one or more data packets to the mobile terminal 0 or the mobile terminal 0, respectively. The first aspect of the present invention will now be described in detail with reference to FIG. 3 in conjunction with FIG. 2, the description of which is incorporated herein by reference. 3 shows a flow chart of a method for controlling data packet transmission in a network device of a wireless relay network, in accordance with an embodiment of the present invention.

The description of Figure 3 will be based on the wireless relay network shown in Figure 2. It should be understood by those skilled in the art that although FIG. 3 is exemplified by only two relay stations, in a specific application, a plurality of relay stations may be included in the wireless relay network. Although only two mobile terminals are taken as an example in FIG. 3, in a specific application, a plurality of mobile terminals may be included in the wireless relay network.

The first scenario: packet uplink transmission

First, in step S11, the relay station 1 receives the data packets from the mobile terminal 0 and the mobile terminal 0. Further, the data packets received from the mobile terminal 0 and the mobile terminal 0 by the relay station 1 may be the same type of data packets. , can also be different types of data packets.

Specifically, when the relay station 1 receives the data packet from the mobile terminal 0 or the mobile terminal 0', in step S12, the output QoS information of the input data packet is first determined. Since the data packet is from the mobile terminal 0 or the mobile terminal 0, the QoS information related thereto is not included in the data packet, and further, the QoS information of the data packet is used by the mobile terminal 0 or the mobile terminal 0, and the relay station 1 The service QoS information carried by the connection corresponding to the transmission of the data packet is determined. The relay station 1 remaps the service QoS information carried by the connection into the output QoS status information of the input packet and embeds it into the received input packet from the mobile terminal 0 or the mobile terminal 0.

The relay station 1 can determine the output QoS information of the input data packet based on the relevant information in the service QoS information carried by the mobile terminal 0 or the mobile terminal 0 and the connection corresponding to the data packet transmitted by the relay station 1.

Preferably, the relay station 1 can determine the output QoS information of the input data packet based on the service type of the data packet in the QoS information of the service carried by the connection.

More preferably, the relay station 1 can determine the output QoS information of the input data packet based on the maximum delay information in the QoS information of the service carried by the connection.

More preferably, the relay station 1 can simultaneously perform QoS according to the service carried by the connection. The service type of the data packet in the information and the maximum delay information to determine the output QoS information of the input data packet, specifically, in the queue of a certain to-be-sent packet corresponding to a certain next hop network device in the relay station 1 For all data packets, the relay station 1 first performs transmission priority ordering by the packet service type. Secondly, for each type of service type data packet, the relay station 1 performs transmission priority ordering on the data packets of the same service type according to the maximum delay information. .

In a variant, the relay station 1 may, according to the mobile terminal 0 or the mobile terminal 0, transmit related information in the service QoS information carried by the connection corresponding to the data packet with the relay station 1 and the locality of the input data packet. Information to determine the output QoS information for the packet.

Preferably, the relay station 1 can determine the output QoS information of the data packet according to the type of the packet service in the service QoS information carried by the connection and the arrival time of the packet to the relay station. Specifically, the relay station 1 first performs transmission prioritization according to the service type of the input data packet, and secondly, performs transmission prioritization according to the arrival time of the input data packet in the determined service type, that is, "first arrival to first". .

In another variation, when the mobile terminal 0 or the mobile terminal 0 communicates with the relay station 1 the service QoS information carried by the connection corresponding to the data packet includes the total waiting time and the maximum time of the data packet. Delay, the relay station 1 can determine the output QoS information of the input data packet according to the processing time.

Preferably, the relay station 1 can determine the output QoS information of the input data packet based on the total waiting time. Specifically, when the total waiting time of the input packet is long, it indicates that the input packet is waiting to be transmitted in the last hop or the last hop network device for a long time. Therefore, the relay station can determine a higher transmission priority for the input data packet.

More preferably, the relay station 1 can determine the output QoS information of the input data packet based on the maximum delay information and the difference in the total waiting time. Specifically, the remaining maximum delay of the input data packet can be obtained based on the difference between the maximum delay information and the total waiting time. When the remaining maximum delay of the incoming data packet is small, the relay station should determine a higher transmission priority for the incoming data packet.

After the relay station 1 embeds the output QoS information into the data packet, the relay station 1 according to the input The connection identification information of the data packet and the priority of the output QoS information are discharged into the queue of the corresponding data packet to be transmitted. Further, in this embodiment, the next hop network device of the relay station 1 has only the relay station 2, therefore, the relay station 1 only includes one data packet queue to be sent, and the data packets in the to-be-sent data packet queue are sent to the relay station. 2. Of course, if the relay station 1 is connected to a plurality of next hop network devices, the relay station 1 has a data packet queue to be transmitted corresponding to each next hop network device.

At the same time, the relay station 1 transmits, according to the priority order of the QoS information of all the data packets in the data packet queue to be transmitted, the corresponding network resource (for example, bandwidth resource) allocated by the relay station 2, and transmits one or the network resource. Multiple packets to relay station 2. Further, before the data packet is sent, the data packet is encapsulated by the connection identifier information (CID), where the connection identifier information is used to indicate which network device the next hop of the data packet is (this embodiment) The next hop network device of the relay station 1 is the relay station 2).

Further, the relay station 1 requests the network resource from the relay station 2 in two ways: incrementally and in total.

(a) incremental When the relay station 1 requests network resources from the relay station 2 in an incremental manner, the relay station 1 requests network resources only for new data packets newly queued in the to-be-sent data packet queue after the last network resource request.

(b) Sum type

When the relay station 1 requests network resources from the relay station 2 in a combined manner, the relay station 1 requests network resources for all data packets in the current data packet queue to be transmitted.

Hereinafter, the step of the relay station 2 processing the data packet from the relay station 1 is similar to the step of the relay station 1 processing the data packet from the mobile terminal 0 and the mobile terminal 0, and therefore, the method flow shown in conjunction with FIG. 3 will be continued below. The figure describes the procedure in which the relay station 2 processes the data packets from the relay station 1.

In step S11, the relay station 2 receives one or more data packets from the relay station 1. After the relay station 2 receives one or more data packets from the relay station 1, decapsulating the one or more data packets, and extracting network resource request information from the one or more data packets, and according to the network resources The request information allocates corresponding network resources to the relay station 1. Further, the corresponding network resource allocated by the relay station 2 to the relay station 1 may be part of all network resources requested by the relay station 1. Of course, in the case of rich network resources, the relay station 2 may also use all network resources requested by the relay station 1. Assigned to relay station 1.

Then, in step S12, the relay station 2 determines the output QoS information of one or more input packets from the relay station 1.

The relay station 2 can determine the output QoS information of the data packet based on the relevant information in the input QoS information of the input packet from the relay station 1.

Specifically, the relay station 2 first extracts input QoS information from the input data packet, and secondly, determines output QoS information of the input data packet based on the related information in the input QoS information.

Preferably, the relay station 2 can be based on the number of input QoS information of the input data packet. Determine the output QoS information of the packet according to the type of service of the packet

More preferably, the relay station 2 can determine the output QoS information of the data packet based on the maximum delay information in the input QoS information of the input data packet.

More preferably, the relay station 2 can simultaneously determine the output QoS information of the data packet according to the service type of the data packet in the input QoS information of the input data packet and the maximum delay information, specifically, for the relay station 2 corresponding to one of the All the data packets in the queue of the data packet to be sent of the next hop network device, the relay station 2 first performs the priority ordering of the data packet service type, and secondly, for the data packet of each service type, the relay station 2 according to the maximum The delay information prioritizes the sending of packets of the same service type.

In a variant, the relay station 2 can determine the output QoS information of the data packet based on the relevant information in the incoming QoS information of the incoming data packet from the relay station 1 and the local information of the incoming data packet.

Preferably, the relay station 2 can determine the output QoS information of the input data packet by the type of data packet service in the input QoS information of the incoming data packet from the relay station and the arrival time of the incoming data packet to the relay station 2. Specifically, the relay station 2 first performs transmission prioritization according to the service type of the input data packet, and secondly, in the determined

"First come first".

In another variation, when the input QoS information in the input data packet from the relay station 1 includes the total waiting time of the input data packet and the maximum time delay, the relay station 2 can determine the input data packet according to the processing time. Output QoS information.

Preferably, the relay station 2 can determine the output QoS information of the input data packet based on the total waiting time. Specifically, when the total waiting time of the input packet is long, it indicates that the input packet is waiting to be transmitted in the last hop or the last hop network device for a long time. Therefore, the relay station can determine a higher transmission priority for the input data packet.

More preferably, the relay station 2 can determine the output QoS information of the input data packet based on the maximum delay information and the difference in the total waiting time. Specifically, the remaining maximum delay of the input data packet can be obtained according to the difference between the maximum delay information and the total waiting time. When the remaining maximum delay of the incoming data packet is small, the relay station should determine a higher transmission priority for the incoming data packet.

After the relay station 2 determines the output QoS information of one or more data packets from the relay station 1, the relay station 2 discharges the QoS information based on the connection identification information of the one or more data packets and the priority of the output QoS information. In the queue of packets to be sent. In this embodiment, the next hop network device of the relay station 2 has only the base station 3. Therefore, the relay station 2 only includes one data packet queue to be transmitted, and the data packets in the to-be-sent data packet queue are sent to the base station 3.

At the same time, the relay station 2 transmits, according to the priority order of the QoS information of all the data packets in the data packet queue to be transmitted, the corresponding network resource (for example, bandwidth resource) allocated by the base station 3, and transmits one or the network resource. Multiple data packets to base station 3. Further, before each data packet is transmitted, the relay station 2 encapsulates the data packet by using connection identification information (CID), where the connection identification information is used to indicate which network device the next hop of the data packet is (this In an embodiment, the next hop network device of the relay station 2 is the base station 3).

The base station 3 receives one or more data packets from the relay station 2. After the base station 3 receives one or more data packets from the relay station 2, decapsulating the one or more data packets, and extracting network resource request information from the one or more data packets, and according to the network resources The request information allocates corresponding network resources to the relay station 2. Specifically, it is consistent with the fact that the relay station 2 allocates network resources to the relay station 1. For the sake of brevity, no further details are provided herein.

In a variant, the base station 3 can periodically allocate network resources to the relay station 2, in which case the relay station 2 does not need to embed network resource request information in each data packet transmitted to the base station 3 for use in the base station. 3 request for sending its pending packet queue Network resources in the remaining packets.

When the data packet is a downlink transmission, first, in step S11, the base station 3 receives a data packet from a wireless access controller (WAC, Wireless Access Controller), and further, the base station 3 receives the wireless access controller from the wireless access controller. The packets of (WAC, Wireless Access Controller) can be the same type of data packets or different types of data packets.

Specifically, when the base station 3 receives the data packet from the wireless access controller (WAC, Wireless Access Controller), in step S12, the output QoS information of the input data packet is first determined. Since the data packet is from a Wireless Access Controller (WAC), the QoS information related thereto is not included in the data packet. Further, the QoS information of the data packet is used by the wireless access controller (WAC, The service QoS information carried by the connection between the Wireless Access Controller and the base station 3 is determined. The base station 3 remaps the service QoS information carried by the connection into the output QoS information of the input data packet, and embeds it into the received input data packet from the wireless access controller (WAC, Wireless Access Controller). .

Specifically, the base station 3 may determine, according to related information in the service QoS information carried by the connection between the wireless access controller (WAC, Wireless Access Controller) and the base station 3, the connection corresponding to the input data packet, Output QoS information.

Preferably, the base station 3 can determine the output QoS information of the input data packet according to the service type of the data packet in the QoS information of the service carried by the connection.

More preferably, the base station 3 can determine the output QoS information of the input data packet based on the maximum delay information in the QoS information of the service carried by the connection.

More preferably, the base station 3 can determine the output QoS information of the input data packet according to the service type of the data packet in the QoS information of the service carried by the connection and the maximum delay information, specifically, for the base station 3 corresponding to One of the next hop network devices For all data packets in a queue to be sent, the base station 3 first performs transmission prioritization by the packet service type. Second, for each type of service type data packet, the base station 3 pairs the same service according to the maximum delay information. Types of packets are sent for prioritization.

In a variant, the base station 3 can according to the related information in the service QoS information carried by the connection corresponding to the data packet transmitted between the wireless access controller (WAC, Wireless Access Controller) and the base station 3, and the data. The local information of the packet determines the output QoS information of the incoming data packet.

Preferably, the base station 3 can determine the output QoS information of the input data packet according to the type of the data packet service in the service QoS information carried by the connection and the arrival time of the data packet to the relay station. Specifically, the base station 3 first performs transmission prioritization according to the service type of the data packet, and secondly, performs transmission prioritization according to the arrival time of the data packet in the determined service type, that is, "first come, first served".

In another variation, the service QoS information carried by the connection corresponding to the data packet transmitted between the wireless access controller (WAC, Wireless Access Controller) and the base station 3 includes the total waiting of the data packet. The time and the maximum time delay, the base station 3 can determine the output QoS information of the input data packet according to the processing time.

Preferably, the base station 3 can determine the output QoS information of the incoming data packet based on the total waiting time. Specifically, when the total waiting time of the data packet is long, it indicates that the input data packet is waiting to be transmitted for a long time in the last hop or the last hop network device. Therefore, the relay station can determine a higher transmission priority for the incoming data packet.

More preferably, the base station 3 can determine the output QoS information of the input data packet based on the difference between the maximum delay information and the total waiting time. Specifically, the remaining maximum delay of the input data packet can be obtained according to the difference between the maximum delay information and the total waiting time. When the remaining maximum delay of the data packet is small, the relay station should determine a higher transmission priority for the input data packet.

Then, the base station 3 arranges the connection identifier information of the data packet and the priority of the output QoS information into the queue of the corresponding data packet to be transmitted. Further, in this embodiment, the next hop network device of the base station 3 has only the relay station 2, and therefore, The station 3 only contains one data packet queue to be sent, and the data packets in the to-be-sent data packet queue are sent to the relay station 2. Certainly, if the base station 3 is connected to multiple next hop network devices, the base station 3 has a to-be-sent packet queue corresponding to each next hop network device.

At the same time, the base station 3 uses the existing network resources (for example, bandwidth resources) to send one or more data packets matching the network resources according to the priority order of the QoS information of all the data packets in the data packet queue to be sent. Relay station 2. Further, before the data packet is sent, the data packet is encapsulated by the connection identifier information (CID), where the connection identifier information is used to indicate which network device the next hop of the data packet is (this embodiment) The next hop network device of the base station 3 is the relay station 2).

Hereinafter, the step of the relay station 2 processing the data packet from the base station 3 is similar to the step of the base station 3 processing the data packet from the wireless access controller (WAC, Wireless Access Controller), and therefore, will be further described below in conjunction with FIG. The method flow chart describes the procedure for the relay station 2 to process the data packets from the base station 3.

Specifically, in step S11, the relay station 2 receives one or more data packets from the base station 3. After receiving one or more data packets from the base station 3, the relay station 2 decapsulates the one or more data packets, and then, in step S12, determines the output QoS information of the one or more data packets.

For a specific procedure, reference may be made to the above description for the relay station 2 to determine the output QoS information of one or more data packets from the relay station 1 in the uplink. For the sake of brevity, I will not repeat them here.

At the same time, the relay station 2 uses the existing network resources (for example, bandwidth resources) to send one or more data packets matching the network resources according to the priority order of the QoS information of all the data packets in the data packet queue to be sent. Relay station 1. Further, each data Before the packet is sent, the data packet is encapsulated by the connection identifier information (CID), where the connection identifier information is used to indicate which network device the next hop of the data packet is (in the embodiment, the relay station 2 is under One hop network device is a relay station 1).

Finally, the relay station 1 will send the one or more data packets to the mobile terminal 0 or the mobile terminal 0, respectively. The second aspect of the present invention will be described in detail below with reference to FIG. 4 in conjunction with FIG. The description of Figure 2 is hereby incorporated by reference.

In the figure, the first control device 10 includes a first determining device 101 and a first transmitting device 102.

The description of Figure 4 will be based on the wireless relay network shown in Figure 2. It should be understood by those skilled in the art that although FIG. 4 only takes two relay stations as an example, in a specific application, a plurality of relay stations may be included in the wireless relay network. Although only two mobile terminals are taken as an example in FIG. 4, in a specific application, a plurality of mobile terminals may be included in the wireless relay network.

The first scenario: packet uplink transmission

First, the receiving device in the relay station 1 (for simplicity, shown in FIG. 4) receives data packets from the mobile terminal 0 and the mobile terminal 0, and further, the receiving device in the relay station 1 receives the received mobile terminal 0. The data packets of the mobile terminal 0 and the mobile terminal 0 may be the same type of data packets or different types of data packets.

Specifically, when the receiving device in the relay station 1 receives the data packet from the mobile terminal 0 or the mobile terminal 0, the first determining device 101 in the control device 10 included in the relay station 1 first determines the output of the input data packet. QoS information. Since the packet comes from Mobile terminal 0 or mobile terminal 0, therefore, the data packet does not contain QoS information related thereto, and further, the QoS information of the data packet is transmitted between mobile terminal 0 or mobile terminal 0 and the relay station 1 The service QoS information carried by the connection corresponding to the packet is determined. The first determining device 101 in the control device 10 included in the relay station 1 remaps the service QoS information carried by the connection into the output QoS state information of the input data packet, and embeds it into the received mobile terminal 0. Or mobile terminal 0, in the input packet.

The first determining device 101 in the control device 10 included in the relay station 1 may transmit related information in the service QoS information carried by the connection corresponding to the data packet between the mobile terminal 0 or the mobile terminal 0 and the relay station 1 Determine the output QoS information of the input packet.

Preferably, the first determining means 101 of the control means 10 included in the relay station 1 can determine the output QoS information of the input data packet based on the service type of the data packet in the QoS information of the service carried by the connection.

More preferably, the first determining means 101 of the control means 10 included in the relay station 1 can determine the output QoS information of the input data packet based on the maximum delay information in the QoS information of the service carried by the connection.

More preferably, the first determining device 101 in the control device 10 included in the relay station 1 can simultaneously determine the input data packet according to the service type of the data packet in the QoS information of the service carried by the connection and the maximum delay information. Output QoS information, specifically, for all data packets in a certain to-be-transmitted data packet queue of the relay station 1 corresponding to a certain next hop network device, the first determining device in the control device 10 included in the relay station 1 First, the transmission priority order is performed by the data packet service type. Secondly, for each data packet of the service type, the first determining device 101 in the control device 10 included in the relay station 1 performs the same service according to the maximum delay information. Types of packets are sent for prioritization.

In a variant, the first determining means 101 of the control means 10 included in the relay station 1 can carry the connection corresponding to the connection corresponding to the data packet between the mobile terminal 0 or the mobile terminal 0 and the relay station 1. Related information in the service QoS information and the The local information of the packet determines the output QoS information of the incoming packet.

Preferably, the first determining device 101 of the control device 10 included in the relay station 1 can determine the input data packet according to the type of data packet service in the service QoS information carried by the connection and the arrival time of the data packet to the relay station. Output QoS information. Specifically, the first determining device 101 in the control device 10 included in the relay station 1 first performs transmission prioritization according to the service type of the data packet, and secondly, according to the arrival time of the data packet in the determined service type. Send priority ordering, which is "first come, first served".

In another variation, when the mobile terminal 0 or the mobile terminal 0 communicates with the relay station 1 the service QoS information carried by the connection corresponding to the data packet includes the total waiting time and the maximum time of the data packet. Delay, the first determining means 101 of the control means 10 included in the relay station 1 can determine the output QoS information of the input data packet based on the processing time.

Preferably, the first determining means 101 of the control means 10 included in the relay station 1 can determine the output QoS information of the input data packet based on the total waiting time. Specifically, when the total waiting time of the input data packet is long, it indicates that the input data packet is waiting to be transmitted for a long time in the last hop or the last hop network device. Therefore, the relay station can determine a higher transmission priority for the incoming data packet.

More preferably, the first determining means 101 of the control means 10 included in the relay station 1 can determine the output QoS information of the input data packet based on the difference between the maximum delay information and the total waiting time. Specifically, the remaining maximum delay of the input data packet can be obtained according to the difference between the maximum delay information and the total waiting time. When the remaining maximum delay of the input packet is small, the relay station should determine a higher transmission priority for the input packet.

After the first determining means 101 in the control device 10 included in the relay station 1 embeds the output QoS information in the input data packet, the arranging means in the relay station 1 (not shown in FIG. 4 for simplicity) is based on the data packet. The priority information of the connection identification information and the new QoS information is placed in the queue of the corresponding data packet to be transmitted. Further, since in the present embodiment, the next hop network device of the relay station 1 has only the relay station 2, therefore, The relay station 1 only contains one data packet queue to be sent, and the data packets in the to-be-sent data packet queue are sent to the relay station 2. Of course, if the relay station 1 is connected to a plurality of next hop network devices, the relay station 1 has a data packet queue to be transmitted corresponding to each next hop network device.

At the same time, the first transmitting device 102 in the control device 10 included in the relay station 1 utilizes the corresponding network resources allocated by the relay station 2 according to the priority order of the QoS information of all the data packets in the data packet queue to be transmitted (for example, Bandwidth resource), sends one or more data packets matching the network resource to the relay station 2. Further, before each data packet is transmitted, the encapsulating device in the relay station 1 (not shown in FIG. 4 for simplicity) encapsulates the data packet with connection identification information (CID), where the connection identification information is used. Which network device is indicated as the next hop of the data packet (in this embodiment, the next hop network device of the relay station 1 is the relay station 2).

Further, the network resource allocated by the relay station 2 to the relay station 1 for transmitting the remaining data packets in the queue of the data packet to be transmitted according to the network resource request information of the relay station 1 is generally limited, and the network resources allocated by the relay station 2 to the relay station 1 are limited. When there are few, the first transmitting device 102 in the control device 10 included in the relay station 1 can only QoS in the queue of the to-be-sent packet according to the priority order of the QoS information of the data packets in the packet queue to be transmitted. A packet with a higher priority information is sent to the relay station 2 first. Of course, in an extreme case, the relay station 2 allocates sufficient network resources to the relay station 1. At this time, the first transmitting device 102 in the control device 10 included in the relay station 1 can set all of its pending packet queues. The data packet is sent to the relay station 2 together.

Further, the first transmitting device 102 in the control device 10 in the relay station 1 embeds network resource request information in one or more data packets transmitted to the relay station 2 for requesting the relay station 2 for transmitting its to-be-sent data packet The network resources of the remaining packets in the queue. In the case where the relay station 1 simultaneously transmits a plurality of data packets to the relay station 2, the embedded device in the relay station 1 (not shown in FIG. 4 for the sake of clarity) may embed the network resource request information in any one of the plurality of data packets. In the packet. Preferably, the embedded device in the relay station 1 can embed the network resource request information in the first data packet of the plurality of data packets. Further, the relay station 1 requests the network resource from the relay station 2 in the following two ways: respectively, incremental and sum.

(c) incremental

When the resource requesting means in the control device 10 included in the relay station 1 (not shown in FIG. 4 for the sake of brevity) requests network resources from the relay station 2 in an incremental manner, the resource requesting device merely follows the last network resource. New packets destined for the queue of packets to be sent after request are requested for network resources.

(d) Sum type

When the resource requesting means in the control device 10 included in the relay station 1 requests the network resource from the relay station 2 in a combined manner, the resource requesting device requests the network resource for all the data packets in the current data packet queue to be transmitted.

Hereinafter, the function performed by the relay station 2 when processing the data packet from the relay station 1 is similar to the function performed by the relay station 1 when processing the data packet from the mobile terminal 0 and the mobile terminal 0, and therefore, the following will still be combined. The structural diagram of the control device shown in Fig. 4 describes the functions performed by the relay station 2 when processing the data packets from the relay station 1.

After the receiving device in the relay station 2 receives one or more data packets from the relay station 1, the decapsulation device decapsulates the one or more data packets, and then the distribution device in the control device 10 in the relay station 2 The network resource request information is extracted from the one or more data packets, and the corresponding network resource is allocated to the relay station 1 according to the network resource request information. Further, the corresponding network resource allocated by the distribution device in the control device 10 in the relay station 2 to the relay station 1 may be part of all network resources requested by the relay station 1. Of course, in the case of rich network resources, the relay station 2 may also All network resources requested by the relay station 1 are allocated to the relay station 1.

In a variant, the distribution device in the control device 10 included in the relay station 2 can periodically allocate network resources to the relay station 1, in which case the resource request device in the control device 10 included in the relay station 1 It is not necessary to embed network resource request information in each of the data packets transmitted to the relay station 2 for requesting the relay station 2 for the network resource for transmitting the remaining data packets in the queue of the data packet to be transmitted. Then, the first determining means 101 of the control means 10 included in the relay station 2 determines the output QoS information of one or more input data packets from the relay station 1.

Specifically, the extracting means in the control device 10 included in the relay station 2 (not shown in FIG. 4 for the sake of clarity) first extracts input QoS information from the input data packet, and then the control device 10 included in the relay station 2 The second determining means (not shown in FIG. 4 for simplicity) determines the output QoS information of the input data packet based on the related information in the input QoS information

Preferably, the second determining means in the control device 10 included in the relay station 2 can determine the output QoS information of the input data packet based on the service type of the data packet in the input QoS information of the input data packet.

More preferably, the second determining means in the control device 10 included in the relay station 2 can determine the output QoS information of the input data packet based on the maximum delay information in the input QoS information of the input data packet.

More preferably, the second determining device in the control device 10 included in the relay station 2 can simultaneously determine the output QoS of the input data packet according to the service type of the data packet in the input QoS information of the input data packet and the maximum delay information. Information, specifically, for all data packets in a certain to-be-sent packet queue corresponding to a certain next-hop network device in the relay station 2, the second determining device in the control device 10 included in the relay station 2 first uses the data packet The service type performs transmission priority ordering. Secondly, for each type of service type data packet, the second determining device in the control device 10 included in the relay station 2 transmits the data packet of the same service type first according to the maximum delay information. Sort by level.

In a variant, the second determining means in the control means 10 included in the relay station 2 can determine the input based on the relevant information in the input QoS information of the incoming data packet from the relay station 1 and the local information of the incoming data packet. Output QoS information of the data packet Preferably, the second determining means in the control device 10 included in the relay station 2 can arrive at the relay station 2 according to the type of data packet service in the input QoS information of the input data packet from the relay station and the input data packet The arrival time determines the output QoS information of the input packet. Specifically, the second determination in the control device 10 included in the relay station 2 The device first performs transmission prioritization according to the service type of the input data packet, and secondly, performs transmission prioritization according to the arrival time of the input data packet in the determined service type, that is, "first to first".

In another variation, when the input QoS information in the input packet from the relay station 1 includes the total waiting time of the input packet and the maximum time delay, the second of the control devices 10 included in the relay station 2 The determining means may determine the output QoS information of the input data packet based on the processing time.

Preferably, the second determining means in the control means 10 included in the relay station 2 can determine the output QoS information of the input data packet based on the total waiting time. Specifically, when the total waiting time of the input data packet is long, it indicates that the input data packet is waiting to be transmitted for a long time in the last hop or the last hop network device. Therefore, the relay station can determine a higher transmission priority for the input data packet.

More preferably, the second determining means in the control means 10 included in the relay station 2 can determine the output QoS information of the input data packet based on the difference between the maximum delay information and the total waiting time. Specifically, the remaining maximum delay of the input data packet can be obtained according to the difference between the maximum delay information and the total waiting time. When the remaining maximum delay of the incoming data packet is small, the relay station should determine a higher transmission priority for the incoming data packet.

When the second determining means in the control device 10 included in the relay station 2 determines the new QoS information of one or more data packets from the relay station 1, the aligning device in the control device 10 included in the relay station 2 is based on the one or The connection identification information of multiple data packets and the priority status of the new QoS information are queued into the corresponding data packet queue to be sent. In this embodiment, the next hop network device of the relay station 2 has only the base station 3. Therefore, the relay station 2 only includes one data packet queue to be transmitted, and the data packets in the to-be-sent data packet queue are sent to the base station 3.

At the same time, the first transmitting device 102 in the control device 10 included in the relay station 2 utilizes the corresponding network resources (for example, bandwidth) allocated by the base station 3 according to the priority order of the QoS information of all data packets in the data packet queue to be transmitted. Resource), sending one or more data packets matching the network resource to the base station 3. Further, before each data packet is transmitted, the encapsulating device in the relay station 2 uses the connection identification information (CID) for the data. The packet is encapsulated, where the connection identifier information is used to indicate which network device the next hop of the data packet is. (In the present embodiment, the next hop network device of the relay station 2 is the base station 3).

Of course, the relay station 1 embeds network resource request information in one or more data packets transmitted to the relay station 2 for requesting the relay station 2 for the network resource for transmitting the remaining data packets in the data packet queue to be transmitted, the relay station 2 The first transmitting device 102 included in the control device 10 is sent to the base station 3 - or a plurality of data packets, and the network resource request information is also embedded for requesting the base station 3 for transmitting the data packet queue to be transmitted. Network resources in the remaining packets. For the sake of brevity, we will not repeat them here.

The receiving device in the base station 3 receives one or more data packets from the relay station 2. After the receiving device in the base station 3 receives one or more data packets from the relay station 2, the one or more data packets are decapsulated by the decapsulation device in the base station 3, and then the control device 10 included in the base station 3 The distribution device extracts network resource request information from the one or more data packets, and allocates corresponding network resources to the relay station 2 according to the network resource request information. Specifically, it is consistent with the fact that the relay station 2 allocates network resources for the relay station 1. For the sake of brevity, no further details are provided herein.

In a variant, the distribution device in the control device 10 included in the base station 3 can periodically allocate network resources to the relay station 2, in which case the resource request device in the control device 10 included in the relay station 2 is It is not necessary to embed network resource request information in each data packet transmitted to the base station 3 for requesting the relay station 3 for network resources for transmitting the remaining data packets in the data packet queue to be transmitted.

At the same time, the removal means in the control device 10 included in the base station 3 discards the QoS information contained in the packet after receiving each packet from the relay station 2. Case 2: Packet downlink transmission

When the data packet is a downlink transmission, first, the receiving device in the base station 3 receives the data packet from the wireless access controller (WAC, Wireless Access Controller), and further, the receiving device received in the base station 3 receives the wireless connection. The data packets of the controller (WAC, Wireless Access Controller) can be the same type of data. Packages can also be different types of packets.

Specifically, when the receiving device in the base station 3 receives the data packet from the wireless access controller (WAC, Wireless Access Controller), the first determining device 101 in the control device 10 included in the base station 3 first determines the input data. The output QoS information of the packet. Since the data packet is from a Wireless Access Controller (WAC), the QoS information related thereto is not included in the data packet. Further, the QoS information of the data packet is used by the wireless access controller (WAC, The service QoS information carried by the connection between the Wireless Access Controller and the base station 3 is determined. The first determining device 101 in the control device 10 included in the base station 3 remaps the service QoS information carried by the connection into the output QoS information of the input data packet, and embeds it into the received wireless access controller. (WAC, Wireless Access Controller) in this input packet.

Specifically, the first determining apparatus 101 in the control apparatus 10 included in the base station 3 may be carried according to a connection corresponding to the transmission of the input data packet between the wireless access controller (WAC, Wireless Access Controller) and the base station 3. The relevant information in the service QoS information determines the output QoS information of the input packet.

Preferably, the first determining means 101 of the control device 10 included in the base station 3 can determine the output QoS information of the input data packet according to the service type of the data packet in the QoS information of the service carried by the connection.

More preferably, the first determining means 101 of the control device 10 included in the base station 3 can determine the output QoS information of the input data packet based on the maximum delay information in the QoS information of the service carried by the connection.

More preferably, the first determining device 101 in the control device 10 included in the base station 3 can simultaneously determine the output of the data packet according to the service type of the data packet in the QoS information of the service carried by the connection and the maximum delay information. QoS information, specifically, for all data packets in a certain data packet queue to be transmitted corresponding to a certain next hop network device in the base station 3, the first determining device 101 in the control device 10 included in the base station 3 first The packet service type performs transmission priority ordering. Secondly, for each type of service type data packet, the first determining device 101 in the control device 10 included in the base station 3 re The packets of the same service type are prioritized according to the maximum delay information. In a variant, the first determining device 101 in the control device 10 included in the base station 3 can transmit the connection corresponding to the data packet between the wireless access controller (WAC, Wireless Access Controller) and the base station 3. The relevant information in the carried service QoS information and the local information of the data packet determine the output QoS information of the input data packet.

Preferably, the first determining device 101 in the control device 10 included in the base station 3 can determine the input data packet according to the data packet service type in the service QoS information carried by the connection and the arrival time of the data packet reaching the relay station. Output QoS information. Specifically, the first determining apparatus 101 in the control apparatus 10 included in the base station 3 first performs transmission prioritization according to the service type of the data packet, and secondly, transmits in the determined service type according to the arrival time of the data packet. Priority ordering, which is "first come, first served".

In another variation, the service QoS information carried by the connection corresponding to the data packet transmitted between the wireless access controller (WAC, Wireless Access Controller) and the base station 3 includes the total waiting of the data packet. The time and the maximum time delay, the first determining means 101 of the control means 10 included in the base station 3 can determine the output QoS information of the input data packet based on the processing time.

Preferably, the first determining means 101 of the control means 10 included in the base station 3 can determine the output QoS information of the input data packet based on the total waiting time. Specifically, when the total waiting time for inputting the data packet is long, it indicates that the input data packet is waiting to be transmitted for a long time in the last hop or the last hop network device. Therefore, the relay station can determine a higher transmission priority for the incoming data packet.

More preferably, the first determining means 101 of the control means 10 included in the base station 3 can determine the output QoS information of the input data packet based on the difference between the maximum delay information and the total waiting time. Specifically, the remaining maximum delay of the input data packet can be obtained according to the maximum delay information and the difference of the total waiting time. When the remaining maximum delay of the incoming data packet is small, the relay station should determine a higher transmission priority for the data packet.

Then, the arranging means in the base station 3 arranges the QoS information according to the connection identification information of the data packet and the priority of the output QoS information into the queue of the corresponding data packet to be transmitted. Further, in this embodiment, the next hop network device of the base station 3 has only the relay station 2, therefore, the base station 3 only includes one data packet queue to be sent, and the data packets in the to-be-sent data packet queue are sent to the relay station. 2. Certainly, if the base station 3 is connected to multiple next hop network devices, the base station 3 has a to-be-sent packet queue corresponding to each next hop network device.

At the same time, the first transmitting device 102 in the control device 10 included in the base station 3 transmits and uses the existing network resources (for example, bandwidth resources) according to the priority order of the QoS information of all the data packets in the data packet queue to be transmitted. The network resource matches one or more data packets to the relay station 2. Further, before the data packet is sent, the encapsulating device in the base station 3 encapsulates the data packet by using connection identifier information (CID), where the connection identifier information is used to indicate which one of the next hop of the data packet is The network device (in this embodiment, the next hop network device of the base station 3 is the relay station 2).

Hereinafter, the function performed by the relay station 2 when processing the data packet from the base station 3 is similar to the function performed by the base station 3 when processing the data packet from the wireless access controller (WAC, Wireless Access Controller), and therefore, The function performed by the relay station 2 when processing the data packet from the base station 3 will be described with reference to the structural diagram of the control device shown in FIG.

Specifically, after the receiving device in the relay station 2 receives one or more data packets from the base station 3, the decapsulation device in the relay station 2 decapsulates the one or more data packets, and then the control included in the relay station 2 The first determining means 101 in the device 10 determines the output QoS information of the one or more data packets.

For a specific procedure, reference may be made to the above description of the output QoS information of the one or more data packets from the relay station 1 by the first determining means 101 in the control device 10 included in the relay station 2 in the uplink. For the sake of brevity, we will not repeat them here.

When the first determining means 101 in the control device 10 included in the relay station 2 determines the output QoS information of one or more data packets from the base station 3, the arranging means in the relay station 2 is connected according to the one or more data packets. The identification information and the priority of the new QoS information are queued into the corresponding queue of packets to be sent. In this embodiment, the next hop network device of the relay station 2 has only the relay station 1, and therefore, the relay station 2 only includes the packet. A packet queue to be sent is sent, and the data packet in the to-be-sent packet queue is sent to the relay station 1.

At the same time, the first transmitting device 102 in the control device 10 included in the relay station 2 transmits and uses the existing network resources (for example, bandwidth resources) according to the priority order of the QoS information of all the data packets in the data packet queue to be transmitted. The network resource matches one or more data packets to the relay station 1. Further, before the data packet is sent, the encapsulating device in the relay station 2 encapsulates the data packet with connection identifier information (CID), where the connection identifier information is used to indicate which one of the next hop of the data packet is Internet equipment. (In this embodiment, the next hop network device of the relay station 2 is the relay station 1).

After the receiving device in the relay station 1 receives one or more data packets from the relay station 2, the decapsulation in the relay station 1 decapsulates the one or more data packets, and then, in the control device 10 included in the relay station 1 The removing device discards the QoS information in the one or more data packets.

Finally, the first transmitting device 102 of the control device 10 included in the relay station 1 will transmit the one or more data packets to the mobile terminal 0 or the mobile terminal 0, respectively. The present invention has been described with respect to the specific embodiments thereof, and it is understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art can make various modifications and changes within the scope of the appended claims.

Claims

Claim

A method for controlling data packet transmission in a network device of a wireless relay network, comprising the steps of:

1. Determine the output QoS information of the input packet from the last hop network device; wherein, the following steps are also included:

a. according to the priority order of the output QoS information of the multiple input data packets from the last hop network device, using the allocated corresponding network resources, sending the multiple input data packets from the last hop network device Part or all of the packet to the next hop network device.

2. The method according to claim 1, wherein the step i comprises the following steps:

11. Extracting input QoS information from the input data packet;

12. determining output QoS information of the input data packet according to the related information in the input QoS information

The method according to claim 2, wherein the step i2 further comprises the following steps:

Determining output QoS information of the input data packet according to relevant information in the input QoS information and local QoS related information of the input data packet, where the local QoS information of the input data packet includes the data packet arrival The arrival time of the relay station and/or the processing delay of the relay station for the input data packet.

The method according to claim 2, wherein the QoS information includes a total waiting time and maximum delay information of the data packet, where the step i2 further includes the following steps:

- determining output QoS information of the input data packet based on processing time related information in the input QoS information.

The method according to claim 1, wherein the transmission of the data packet is an uplink transmission, wherein the part or all of the plurality of input data packets sent from the last hop network device are sent. Included in the first network resource request information, where The first network resource request information is used by the next hop network device to request to acquire network resources for sending subsequent data packets.

The method according to claim 1, wherein the transmission of the data packet is an uplink transmission, wherein the input data packet from the last hop network device includes second network resource request information,

Among them, it also includes the following steps:

- allocating network resources to the last hop network device according to the second network resource request information, where the second network resource request information is used by the last hop network device to request acquisition and transmission to the network device The network resource of the packet.

The method according to claim 1, wherein the next hop network device is a mobile terminal or the next hop is a radio access controller, and the method further includes the following steps:

- removing QoS information from the incoming data packet from the last hop network device.

The method according to any one of claims 1 to 4, wherein the network device comprises a relay station or a base station.

A control device for controlling data packet transmission in a network device of a wireless relay network, comprising:

a first determining means, configured to determine output QoS information of an input data packet from the last hop network device;

Among them, it also includes:

a first sending device, configured to send, according to a priority order of output QoS information of the plurality of input data packets from the last hop network device, the allocated network resource from the last hop network device Part or all of the packets in the input packet to the next hop network device.

10. The control device according to claim 9, wherein the first determining device comprises:

And an extracting device, configured to extract input QoS information from the input data packet; and second determining means, determining output QoS information of the input data packet according to the related information in the input QoS information.

11. The control device according to claim 10, wherein the second The determining device is further configured to determine, according to the related information in the input QoS information and the local QoS related information of the input data packet, the output QoS information of the input data packet, where the local QoS information of the input data packet includes the The arrival time of the data packet arriving at the relay station and/or the delay of processing the input data packet by the relay station.

The control device according to claim 10, wherein the QoS information includes a total waiting time and a maximum delay of the data packet, wherein the second determining device is further configured to perform according to the input The processing time related information in the QoS information determines the output QoS information of the input data packet.

The control device according to claim 9, wherein the transmission of the data packet is an uplink transmission, wherein the transmitting part or all of the plurality of input data packets from the last hop network device The packet includes first network resource request information, where the first network resource request information is used by the next hop network device to obtain a network resource for sending a subsequent data packet.

The control device according to claim 9, wherein the transmission of the data packet is an uplink transmission, wherein the input data packet from the last hop network talks includes a second network. Resource request information,

Among them, it also includes:

a distribution device, configured to allocate network resources to the last hop network device according to the second network resource request information, where the second network resource request information is used by the last hop network device to the network device Request to get the network resources that send subsequent packets.

The control device according to claim 9, wherein the next hop network device is a mobile terminal or the next hop is a radio access controller, and the method further includes:

Removing means for removing QoS information from the incoming data packet from the last hop network device.

The control device according to any one of claims 9 to 15, characterized in that the network device comprises a relay station or a base station.

A network device in a wireless relay network, comprising the control device for controlling data packet transmission according to any one of claims 9 to 16.