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User device for communicating data and method

專利號
US10091814B2
公開日期
2018-10-02
申請人
SONY CORPORATION（JP Tokyo）
發(fā)明人
Matthew William Webb
IPC分類
H04W74/00; H04W52/02; H04W72/04
技術領域
response,message,user,windowing,window,access,device,station,windows,in
地域： Tokyo

摘要

A user device for transmitting and receiving data to and from an infrastructure equipment via a wireless access interface. The user device is configured to receive an indication from the infrastructure equipment of a location and duration of a temporal response window for receiving response messages, the response messages being received in response to access request messages and the location and duration of the temporal response window having been determined by the infrastructure equipment. The user device is configured to transmit an access request message for requesting access to the wireless access interface to the infrastructure equipment, and to receive a response message in response to the access request message from the infrastructure equipment, wherein the user device is configured to receive the response message in the temporal response window.

說明書

However, more recently decoupled uplink and downlink communication networks have been proposed in order to increase coverage and capacity. Decoupled uplink and downlink operation may occur for example when uplink only relays are utilised and or uplink and downlink signals are transmitted from and received at different relay nodes and or different infrastructure equipment. For instance, a user device may transmit an uplink signal to a nearby relay but receive its downlink signal directly from a base station, thus the communications paths of the uplink and downlink signals are different. This scenario can lead to increased coverage provided by the base station and may occur due to the greater transmission power of a base station compared to a user device. For example, due to power constraints, a mobile user device may only be able to transmit to a nearby relay whereas the higher transmission power associated with the base station will allow the downlink signal to be transmitted with sufficient power that it can be received directly by the mobile user device.

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