Selection of transmission mode based on radio conditions

A technology of transmission mode and wireless equipment, applied in the direction of radio transmission system, transmission system, wireless communication, etc., can solve the problems of poor overhead, high capacity, expensive, time-consuming, etc., and achieve improved channel estimation accuracy, robust transmission, and improved The effect of spectral efficiency

Active Publication Date: 2015-11-25
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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  • Selection of transmission mode based on radio conditions
  • Selection of transmission mode based on radio conditions
  • Selection of transmission mode based on radio conditions

Examples

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Embodiment Construction

[0036] figure 2 An example of a wireless communication network 100 in which embodiments herein may be implemented is shown. The wireless communication network 100 is, for example, a wireless communication network of LTE, WCDMA, GSM network, any 3GPP cellular network, Wimax or 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 a plurality of network nodes, figure 2Two of the plurality of network nodes - network node 111 and second network node 112 - are shown in . The first network node 111 and the second network node 112 may be, respectively, 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 equipm...

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PUM

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Abstract

A network node for selecting transmission mode towards a wireless device in a wireless communications network is provided. The wireless communications network comprises a first cell and a second cell. The wireless device is connected to the first cell, which first cell is served by the network node. The network node obtains (301) information about respective downlink signal strength from the first cell to the wireless device, and the second cell to the wireless device. The network node selects (302) transmission mode towards the wireless device based on absolute signal strength and a difference in signal strength between the first cell and the second cell. The difference is calculated based on the obtained information. Publ.

Description

technical field [0001] Embodiments herein relate to a network node and a method in a network node. Embodiments herein relate specifically to selecting a transmission format. Background technique [0002] A communication device such as a terminal is also called eg User Equipment (UE), mobile terminal, wireless terminal and / or mobile station. Terminals are capable of communicating wirelessly in a cellular communication network or wireless communication system (also sometimes referred to as a cellular radio system or cellular network). Between two terminals, between a terminal and a conventional telephone and / or between a terminal and a server, for example via a radio access network (RAN) and possibly one or more core networks comprised within a cellular communication network Perform communications. [0003] Just to illustrate some other examples, a terminal may also refer to a wireless capable mobile phone, cellular phone, laptop computer or surfplate. In the present conte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/06H04W72/04H04W72/1273H04W72/542
CPCH04B7/0689H04L1/00H04W24/00H04W48/00H04L5/005H04L5/0051H04W76/15H04W72/542H04W24/10H04W72/1273
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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