Retransmission method and retransmission device for communication packs in communication link layer

A communication link and communication packet technology, which is applied in the field of retransmission of communication packets in the communication link layer, to achieve the effect of reducing the burden on the network

Inactive Publication Date: 2013-06-05
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the related art, there is no consideration of maintaining link stability from the aspect of retransmission mechanism. The present invention provides a method and device for retransmitting communication packets in the communication link layer to at least solve the above problems

Method used

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  • Retransmission method and retransmission device for communication packs in communication link layer
  • Retransmission method and retransmission device for communication packs in communication link layer
  • Retransmission method and retransmission device for communication packs in communication link layer

Examples

Experimental program
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Embodiment 1

[0045] This embodiment takes the communication link between the OMC and the eNodeB in the mobile communication field as an example for description. This embodiment provides a method for maintaining link stability by dynamically adjusting communication packets.

[0046] It should be noted that the retransmission mechanism in the related technology is only timed retransmission, so when the network condition is poor, it will inevitably cause a vicious circle, which will cause the network condition to become worse and worse, until the link is finally broken, which is the same as in this embodiment. The retransmission mechanism is different.

[0047] In this embodiment, several flag values ​​are added to the communication packet between OMC and eNodeB: the number of retransmissions, the time spent in this communication (that is, the time spent in this communication is calculated by the following method, and the communication can be recorded Packet, so that the next communication packet...

Embodiment 2

[0061] The prerequisite of this example: OMC and eNodeB are in the established link state. After the link is established, the OMC and eNodeB rely on heartbeat detection to ensure the survival of the link. OMC starts to send heartbeat packets at regular intervals, and eNodeB responds to the heartbeat packets. Among them, OMC maintains a retransmission queue and a receiving queue for each eNodeB.

[0062] OMC sending mode:

[0063] Figure 4 It is a schematic diagram of a communication packet sending process of an OMC sending queue according to an embodiment of the present invention. Such as Figure 4 As shown, the process includes:

[0064] In step S402, the OMC constructs a heartbeat request packet to be sent with the set heartbeat frequency.

[0065] In step S404, after the OMC successfully constructs the aforementioned heartbeat request packet, it sends it.

[0066] In step S406, at the same time, the OMC needs to add the heartbeat request packet to the retransmission queue, recor...

Embodiment 3

[0089] When the network condition between OMC and eNodeB is not good, the heartbeat interval needs to be dynamically adjusted in real time according to the communication packet. If the time taken by the heartbeat indicates that the network condition is improving, in this case, there is no need to adjust the heartbeat frequency, and adjust to the original value after the network is fully restored. See Figure 7 .

[0090] In step S702, the OMC regularly fetches data packets from the receiving queue.

[0091] In step S704, in addition to the data communication packet between the OMC and the eNodeB, there are other types of packet structures specified by the protocol, and it is necessary to determine whether it is a communication data packet.

[0092] Step S706: First, the OMC needs to check the retransmission queue to find the original communication packet corresponding to the ACK packet (communication reply packet).

[0093] Step S708, check whether the number of retransmissions is z...

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Abstract

The invention provides a retransmission method and a retransmission device for communication packs in a communication link layer. The retransmission method includes that a retransmission frequency of the communication pack needing to be retransmitted is computed according to the consumption time of the retransmission communication of a previous communication pack, wherein the consumption time of the retransmission communication is a differential value between the receiving time of a return pack of the previous communication pack and the sending time of the previous communication pack; and the communication pack needing to be retransmitted this time is transmitted according to the retransmission frequency obtained from computing. Due to the technical scheme, the problems that link stability maintaining is not considered yet from the aspect of a retransmission mechanism in relevant arts are solved, the effect that the retransmission frequency is dynamically regulated according to the state of a current network so that network deterioration caused by retransmission under the situation that a network is large in burden is further avoided is achieved, and the network burden is effectively relieved.

Description

Technical field [0001] The present invention relates to the field of communication, and in particular to a method and device for retransmission of communication packets in a communication link layer. Background technique [0002] In the field environment, an operation and maintenance center (Operation & Management Center, referred to as OMC) generally needs to take over a large number of evolved base stations (evolved Node B, referred to as eNodeB). The actual field environment is more complicated, and there are more batch operations that can be performed on the network management system. These can easily cause the instability of the front-end and back-end links, making the network situation good and bad, and the impact on the link between OMC and eNodeB is also relatively high. It may cause "instant break" or "broken link". The occurrence of these situations is unwilling to see the operators. Therefore, how to ensure the stability of the link and reduce the occurrence of instan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/16
CPCH04L1/18H04L1/1825H04L1/1887
Inventor 谢美娟
Owner ZTE CORP
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