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A cloud base station traffic distribution method, device and system

A technology of traffic and buffer capacity, applied in the field of communication, can solve the problems of RRU network congestion, inability to communicate in disaster areas, and inability to communicate with terminals in surrounding areas, so as to improve device utilization and avoid network congestion and paralysis.

Active Publication Date: 2018-02-02
BEIJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In practice, when an emergency occurs in a certain area (such as near the first RRU), such as fire, car accident, earthquake and other disasters, people eagerly hope to communicate with relatives or other related personnel by making phone calls or surfing the Internet. At this time, the network traffic of the first RRU will rise rapidly. When it rises to a certain level, the channel between the first RRU and the BBU in the virtual base station cluster may be blocked, causing the terminals in the surrounding area to be unable to communicate, and the network congestion will not be resolved for a long time. When this occurs, it will also cause network congestion of other RRUs, which will not only make communication impossible in the disaster area, but also affect network communication in other areas

Method used

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  • A cloud base station traffic distribution method, device and system
  • A cloud base station traffic distribution method, device and system
  • A cloud base station traffic distribution method, device and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Embodiment 1 of the present invention proposes a method for offloading traffic of a cloud base station, and offloads uplink data.

[0057] see figure 2 , the uplink data distribution in Embodiment 1 of the present invention includes the following steps:

[0058] Step 201: When the first RRU sends data to the BBU, it inquires whether its own data sending buffer exceeds a set threshold.

[0059] Step 202: If the set threshold is exceeded, the first RRU sends a relay request to the second RRU through a wireless channel.

[0060] Step 203: After the first RRU receives the consent request from the second RRU, the first RRU sends the data to the second RRU through the wireless channel, and then forwards it to the BBU.

[0061] Step 204: The BBU adds the second RRU to the relay list of the first RRU.

Embodiment 2

[0063] Embodiment 2 of the present invention proposes a method for offloading traffic of a cloud base station, and offloads downlink data.

[0064] see image 3 , the downlink data distribution in Embodiment 2 of the present invention includes the following steps:

[0065] Step 301: When the BBU sends data to the first RRU, query the data cache allocated in the BBU to send to the first RRU.

[0066] Step 302: If the set threshold is exceeded, the BBU continues to inquire whether the first RRU has registered with the relay.

[0067] Step 303: If there is a relay RRU in the relay list of the first RRU, the BBU sends the data to the relay RRU, and the relay RRU forwards the data to the first RRU through a wireless channel.

[0068] Figure 4 It is a schematic diagram of the working mode of the cloud base station in the present invention, combined with Figure 4 ,

[0069] In the above-mentioned embodiment 1 and embodiment 2, when the data transmission buffer sent by the firs...

Embodiment 3

[0075] Embodiment 3 proposes a better uplink data offloading process, see Figure 5 , including the following steps:

[0076] Step 501: the first RRU sends data to the BBU.

[0077] Step 502: The first RRU inquires whether its own data transmission buffer exceeds the set first threshold, if yes, execute step 503, otherwise, return to step 502.

[0078] In this step, the threshold may be set according to the carrying capacity of the channel between the first RRU and the switch, for example, set to 75% of the channel capacity.

[0079] Step 503: the first RRU sends a request to a nearby second RRU through a wireless channel.

[0080] In this step, the first RRU sends a request to a nearby RRU (such as the second RRU) through a wireless channel, asking whether the second RRU can serve as a relay of the first RRU to help share traffic transmission.

[0081] Step 504: After receiving the request, the second RRU inquires whether its own data sending buffer is lower than the set s...

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Abstract

The present invention proposes a cloud base station traffic distribution method, a BBU device, an RRU device and a cloud base station traffic distribution system. The method includes uplink and downlink data offloading, wherein the uplink data offloading method is: when the first RRU sends data to the BBU, it queries its own data sending cache, and if the first threshold value is exceeded, the first RRU sends the data to the BBU through the wireless channel. The second RRU nearby sends a relay request. When the first RRU receives the consent request from the second RRU, the first RRU sends the data in the data transmission buffer to the second RRU through the wireless channel, and the second RRU forwards it to the BBU. , the BBU adds the second RRU to the relay list of the first RRU; the downlink data distribution method is: when the BBU sends data to the first RRU, it queries the data buffer allocated in the BBU to send to the first RRU, if the When the predetermined first threshold is selected, the relay RRU of the first RRU is selected from the relay list of the first RRU, and the data is sent to the relay RRU, and the relay RRU forwards the data to the first RRU through the wireless channel.

Description

technical field [0001] The present invention relates to the field of communication technologies, and in particular to a method, device and system for traffic distribution of cloud base stations. Background technique [0002] In the current cloud base station, the cloud uses multiple baseband units BBU to form a virtual base station cluster, and the remote radio frequency unit RRU, which centrally processes user data and management, is distributed in specific sites and covers various areas. Specific as figure 1 As shown, the RRU is connected to the switch through optical fiber, and the switch is connected to the BBU virtual base station cluster through high-speed Ethernet, and the virtual base station cluster is connected to the core network, so that the mobile terminal can perform network communication. [0003] At present, the working mode of the cloud base station is divided into uplink and downlink. The uplink working method is: when a mobile terminal in a certain area ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W28/14
Inventor 刘元安张洪光吴帆范文浩张国强唐碧华田孝东
Owner BEIJING UNIV OF POSTS & TELECOMM