Aggregation of resources over multiple frames in a TDD communication system

A single, current frame technology, applied in wireless communication, transmission path separation devices, electrical components, etc., can solve the problem of reducing the effective data rate, and achieve the effect of extending the cell range and increasing the cell range

Inactive Publication Date: 2011-04-13
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the effective data rate (rate) on the uplink is reduced

Method used

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  • Aggregation of resources over multiple frames in a TDD communication system
  • Aggregation of resources over multiple frames in a TDD communication system
  • Aggregation of resources over multiple frames in a TDD communication system

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Embodiment Construction

[0018] Referring now to the accompanying drawings, figure 1 A user terminal 100 in a mobile communication network 10 is shown. User terminals 100 may include, for example, cellular telephones, personal digital assistants, smartphones, laptop computers, handheld computers, or other devices with wireless communication capabilities. A user terminal 100 communicates with a base station 20 in a cell or sector 12 of a mobile communication network 10 . User terminals 100 receive signals on one or more downlink (DL) channels and transmit signals to base station 20 on one or more uplink (UL) channels.

[0019] For ease of illustration, exemplary embodiments of the present invention will be described in the context of a WiMax (IEEE 802.16) system. However, those skilled in the art will appreciate that the present invention is more generally applicable to other wireless communication systems, including Wideband Code Division Multiple Access (WCDMA) and Long Term Evolution (LTE) systems...

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Abstract

According to embodiments of the present invention, multiple frames or sub- frames on an uplink channel may be aggregated into one logical unit for demodulation and decoding to allow one data packet to span over multiple frames. Multi-frame aggregation is enabled by modifying the uplink resource allocation messages transmitted to the user terminals. The multi-frame resource allocation message includes a BEGIN FLAG field indicating whether a corresponding frame is the first frame in a multi-frame allocation and a REMAINING RESOURCES field to indicate the number of units (e.g., slots or frames) remaining in the multi-frame allocation.

Description

[0001] related application [0002] This application claims priority benefit to US Provisional Patent Application 61 / 048833, filed April 29, 2008, which is hereby incorporated by reference. technical field [0003] In general, the present invention relates to user terminal scheduling on uplink shared channels in mobile communication systems, and more specifically, to a multi-frame allocation method that achieves symbol energy aggregation over multiple frames for greater efficiency. Background technique [0004] The WiMax standard supports time division duplex (TDD) and frequency division duplex (FDD) operation. In the case of TDD, uplink and downlink transmissions occur at different times and usually share the same frequency. Time is divided into sequences of consecutive frames. Each frame has a fixed duration and includes one downlink subframe and one uplink subframe. A frame is divided into an integer number of OFDM symbols. The number of symbols allocated to a downlin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/04
CPCH04W72/04H04L5/0007H04W72/042H04W72/0446H04W72/23H04W72/1268H04L5/1469
Inventor R·拉梅什K·巴拉钱德兰H·库拉帕蒂
Owner TELEFON AB LM ERICSSON (PUBL)
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