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Select transmission mode based on radio conditions

A technology of transmission mode and wireless equipment, which is applied in the direction of radio transmission system, wireless communication, transmission system, etc., can solve the problems of expensive, time-consuming, poor overhead and capacity, so as to improve channel estimation accuracy, improve spectrum efficiency, and transmit robust effect

Active Publication Date: 2018-11-09
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] Networks configured for a transport mode with only DM-RS will in most cases result in less good capacity due to larger overhead
[0017] Configuring the transmission mode with DM-RS for each cell is time-consuming and expensive, requiring advanced measurements and network planning

Method used

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  • Select transmission mode based on radio conditions
  • Select transmission mode based on radio conditions
  • Select transmission mode based on radio conditions

Examples

Experimental program
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Embodiment Construction

[0036] figure 2 An example of a wireless communication network 100 that can implement the embodiments herein is shown. The wireless communication network 100 is, for example, an LTE, WCDMA, GSM network, any 3GPP cellular network, Wimax, or a wireless communication network of any cellular network or system. The use cases according to the embodiments herein are applicable to LTE. However, if another system also uses cell-specific reference signals and user equipment-specific reference signals, the embodiments herein are also applicable to other systems.

[0037] The wireless communication network 100 includes multiple network nodes, figure 2 Two of the plurality of network nodes-the network node 111 and the second network node 112 are shown in. The first network node 111 and the second network node 112 may be, for example, radio base stations (e.g., eNB, evolved node B, or home node B, home evolved node B, or other network nodes capable of serving user equipment, or wireless com...

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PUM

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Abstract

A method in a network node for selecting a transmission mode to a wireless device in a wireless communication network is provided. The wireless communication network includes a first cell and a second cell. The wireless device is adapted to connect to a first cell, the network node serving the first cell. A network node obtains (301) information on respective downlink signal strengths from a first cell to said wireless device and from a second cell to said wireless device. The network node selects (302) a transmission mode for the wireless device based on the absolute signal strength and the difference in signal strength between the first cell and the second cell. A difference in signal strength between the first cell and the second cell is calculated based on the obtained information.

Description

Technical field [0001] The embodiments herein relate to network nodes and methods in the network nodes. The embodiments herein specifically relate to selecting a transmission format. Background technique [0002] A communication device such as a terminal is also referred to as, for example, a user equipment (UE), a mobile terminal, a wireless terminal, and / or a mobile station. The terminal can communicate wirelessly in a cellular communication network or a wireless communication system (sometimes also called a cellular wireless system or a cellular network). It can be, for example, between two terminals, between a terminal and a conventional phone, and / or between a terminal and a server via a radio access network (RAN) included in a cellular communication network and possibly one or more core networks Perform communication. [0003] Just to illustrate some other examples, the terminal may also refer to a mobile phone, cellular phone, laptop computer or surf plate with wireless c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/06H04W72/04H04W72/1273H04W72/542
CPCH04B7/0689H04L5/005H04L5/0051H04W76/15H04W72/542H04W24/10H04W72/1273
Inventor 阿尔内·西蒙松张强比约·哈瓦松皮特·诺克莱
Owner TELEFON AB LM ERICSSON (PUBL)
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