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Methods providing coordination for uplink (UL) coordinated multipoint (CoMP) reception and related network nodes

A technology for nodes and communication networks, applied in diversity/multi-antenna systems, location diversity, electrical components, etc., to solve problems such as reduced gain, reduced ULCoMP performance, and difficulty in using distributed CoMP

Inactive Publication Date: 2017-08-01
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Constraints on bandwidth can limit the type of CoMP that can be employed, as high latency can constrain scheduling and / or reduce achievable gain due to late arrival of information
Therefore, decentralized CoMP may be difficult to use with conventional transport networks
A significant limitation may be that synchronous HARQ is used in the uplink, which means that retransmissions may be required to occur on predetermined occasions
This sets a limit on the processing time available to the base station
Therefore, high-latency, low-bandwidth X2 links degrade the performance of conventional UL CoMP

Method used

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  • Methods providing coordination for uplink (UL) coordinated multipoint (CoMP) reception and related network nodes
  • Methods providing coordination for uplink (UL) coordinated multipoint (CoMP) reception and related network nodes
  • Methods providing coordination for uplink (UL) coordinated multipoint (CoMP) reception and related network nodes

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Embodiment Construction

[0049] The inventive concepts will now be described more fully hereinafter with reference to the accompanying drawings, in which examples of embodiments of the inventive concepts are shown. However, inventive concepts may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the inventive concept to those skilled in the art. It should also be noted that these embodiments are not mutually exclusive. Components from one embodiment may by default be assumed to be present / used in another embodiment.

[0050] For purposes of illustration and explanation only, these and other embodiments of the inventive concept are described herein in the context of operating in a RAN (Radio Access Network) communicating with wireless devices over radio communication channels. However, it will be appreciated that...

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Abstract

Scheduling information for a wireless device may be transmitted from a first node of a network to the second node of the network wherein the scheduling information defines a plurality of time slots for UpLink transmission from the wireless device. After transmitting the scheduling information to the second node, a UL signaling grant may be transmitted to the wireless device for one of the time slots defined by the scheduling information. A UL transmission may be received from the wireless device at the first node over the time slot of the UL signaling grant. Information may be received from the second node relating to the UL transmission over the time slot of the UL signaling grant. The UL transmission may be processed at the first node using the information from the second node relating to the UL transmission from the wireless device.

Description

technical field [0001] The present disclosure relates generally to wireless communications, and more particularly, to coordinated multipoint (CoMP) uplink (UL) reception and associated network nodes. Background technique [0002] Coordinated multipoint (CoMP) transmission / reception is an advanced technique used in cellular communication networks to improve coverage, support high data rates, improve cell edge throughput, and / or increase system throughput. [0003] Uplink CoMP generally implies cooperation / cooperation among multiple geographically separated reception points, and downlink CoMP generally implies dynamic cooperation / cooperation between multiple geographically separated transmission points. In general, the basic idea of ​​CoMP is to perform joint detection in the uplink by jointly processing radio signals received at multiple points, and likewise in the downlink by coordinating from multiple points to one or more The transmission of the user terminal is used to p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/12H04B7/024
CPCH04B7/024H04W72/20H04W72/23H04W72/1268
Inventor M·芬尼F·赫斯R·卡尔森
Owner TELEFON AB LM ERICSSON (PUBL)