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Control terminal device handover method, mobile relay node and terminal device

A technology for mobile relay and terminal control, applied in electrical components, wireless communication and other directions, can solve the problems of extra consumption of wireless backhaul link air interface resources, frequent switching, and heavy network load of mobile relay nodes.

Active Publication Date: 2017-12-22
CHINA MOBILE COMM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the mobile relay node is in a moving state (high-speed rail operation), the terminal equipment switched from the static position needs to be switched to the original macro base station again, resulting in frequent switching and increasing network load
Moreover, since the mobile relay node does not have wired backhaul resources, when a terminal device at a static location switches back to the macro base station from the mobile relay node, the wireless backhaul link (backhaul link) of the mobile relay node will also be consumed additionally. ) air interface resource
[0010] To sum up, in the communication system with mobile relay nodes proposed in the prior art, when the terminal equipment switches, the network load of the mobile relay node will be heavy, and frequent switching of terminal equipment will also waste resources.

Method used

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  • Control terminal device handover method, mobile relay node and terminal device
  • Control terminal device handover method, mobile relay node and terminal device
  • Control terminal device handover method, mobile relay node and terminal device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Embodiment 1 of the present invention proposes a method for controlling switching of terminal equipment in a relay system, such as Figure 3a As shown, on the network side, the specific processing flow is as follows:

[0035] Step 31, determine the current speed value of the mobile relay node.

[0036] The mobile relay node is set on a moving object, and it has two states of operation and rest. Preferably, in the technical solution proposed here in the embodiment of the present invention, a mobile relay node on a high-speed rail is taken as an example for detailed elaboration. Then when the high-speed rail is running, the mobile relay has the same speed value as the high-speed rail. When the high-speed rail enters the station and is at rest, the mobile relay node is also in a static state. At this time, the current speed of the mobile relay node is 0.

[0037] Specifically, the current speed value of the mobile relay node can be determined by using, but not limited t...

Embodiment 2

[0061] Among them, in the heterogeneous network (HetNet) system architecture, there are usually two types of nodes, high-power nodes and low-power nodes. High power nodes such as macro base stations. A low power node (LPN, low power node) may include, but is not limited to, a micro station (pico), a relay node (relay), and the like. The coverage of the signal transmitted by the LPN is small. In order to allow more terminal devices to be connected (offload) to the LPN to play a role in offloading, a cell coverage extension (RE, range extension) technology is proposed. RE specifically means that in a traditional cell selection or reselection process, a terminal device generally selects a cell with the largest Reference Signal Receiving Power (RSRP, Reference Signal Receiving Power) for access. After the range extension technology is proposed, when the terminal equipment performs cell selection or reselection, the terminal equipment adds a bias value (bias) to the RSRP of the LP...

Embodiment 3

[0086] Embodiment 3 of the present invention Here, a method for controlling switching of terminal equipment in a relay system is proposed, such as Figure 5a As shown, the specific processing flow is as follows:

[0087] Step 51, determine whether there is a mobile relay node in the station that the terminal device can currently connect to, if the judgment result is yes, execute step 52, otherwise end the process.

[0088] Wherein, the stations that the terminal device can currently connect to include a relay node, a macro base station, a micro station, or a mobile relay node. According to the detected cell physical identifier, determine whether there is a mobile relay node in the site that the terminal device can currently connect to, where the mobile relay node is pre-configured with a reserved cell physical identifier for identifying the mobile relay node; or according to The received relay indication message determines whether there is a mobile relay node in the site that...

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Abstract

The invention discloses a method for controlling switching of terminal equipment, a mobile relay node and a terminal equipment, which can better solve the problem that the network load of the mobile relay is relatively large when the terminal equipment is switched, and save resources. The method includes: determining the current speed value of the mobile relay node; adjusting the transmission power of the mobile relay node according to the determined current speed value; The transmit power of the node determines the signal strength of the mobile relay node, and switches between the mobile relay node and the macro base station according to the determined signal strength of the mobile relay node.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a method for controlling switching of terminal equipment in a relay system, a mobile relay node and terminal equipment. Background technique [0002] In order to cope with various complex wireless propagation environments and solve the coverage problem of future Long Term Evolution (LTE, Long Term Evolution) network deployment, the 3rd Generation Partnership Project (3GPP, 3rd Generation Partnership Project) is working on the enhanced Long Term Evolution (LTE-A, Long Term Evolution) In the Term Evolution-Advanced) R10 protocol, the relay node (RN, Relay Node) (which may be referred to as a relay for short) is standardized. By adding a relay node between the macro base station (eNB) and the terminal equipment (UE), the direct transmission link between the macro base station and the terminal equipment is divided into two sections, such as figure 1 As shown i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W36/08H04W36/24H04W36/32
Inventor 闫渊王军程广辉
Owner CHINA MOBILE COMM GRP CO LTD