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Scheduling Data Transmissions Between A Mobile Terminal And A Base Station In A Wireless Communications Network

A wireless communication network and mobile terminal technology, which is applied in the field of scheduling data transmission between mobile terminals and base stations in the wireless communication network, can solve problems such as current consumption defects, and achieve the effects of power saving, easy implementation, and simple design

Active Publication Date: 2015-07-15
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Different kinds of radio architectures can be used to deal with this; however, they often have drawbacks in terms of current consumption compared to standard continuous system receivers

Method used

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  • Scheduling Data Transmissions Between A Mobile Terminal And A Base Station In A Wireless Communications Network
  • Scheduling Data Transmissions Between A Mobile Terminal And A Base Station In A Wireless Communications Network
  • Scheduling Data Transmissions Between A Mobile Terminal And A Base Station In A Wireless Communications Network

Examples

Experimental program
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Embodiment Construction

[0036] To achieve higher bandwidths - eg up to 100 MHz - in wireless communication networks, non-contiguous spectrum can be aggregated. figure 1 An example of aggregating system carriers to achieve greater bandwidth is shown. It can be noted that the leftmost system carrier is sufficiently spaced in frequency from the other system carriers. It will experience and cause only a small amount of inter-carrier interference due to the wide carrier spacing. However, the two rightmost system carriers are not sufficiently separated in frequency.

[0037] In a spectrum aggregated system or a multi-channel system as discussed herein, several frequency bands—contiguous or non-contiguous—may be allocated for communication with one mobile terminal. The modulation and access formats within the band may be of any kind, eg Orthogonal Frequency Division Multiplexing (OFDM), Single Carrier Frequency Division Multiplexing (SC-FDMA), Code Division Multiple Access (CDMA), etc. In this application ...

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Abstract

A method of scheduling wireless data transmissions between a mobile terminal and a base station using multiple system carrier signals is disclosed. The method comprises the steps of receiving (101) the mobile terminal information from the base station indicating available system carriers; detecting (102) at least one dynamic parameter indicative of the mobile terminal's current capability to handle non-contiguous system carriers; determining (103) from the dynamic parameter whether a situation has occurred where the mobile terminal's capability to handle non-contiguous system carriers has been reduced; modifying (104), in such case, feedback information to be transmitted to the base station; and transmitting (105) the modified feedback information to the base station. By modifying the feedback information in this way the mobile terminal reduces the likelihood that the base station allocates non-contiguous system carriers to the mobile terminal in situations where it has a reduced capability of handling such system carriers.

Description

technical field [0001] The invention relates to a method and an arrangement for scheduling data transmission between a mobile terminal and a base station in a wireless communication network arranged for the transmission of a plurality of independently scheduled component carrier signals. Background technique [0002] Each generation of wireless communication systems is characterized by ever increasing data rates. While some increases in data rates can be attributed to improvements in modulation, coding, and the like, significant increases in data rates generally require higher system bandwidth. For example, International Mobile Telecommunications—IMT—Advanced, a proposed fourth generation (4G) wireless communication system, mentions bandwidths of up to 100 MHz. However, the radio spectrum is a constrained resource, and since many operators and systems compete for constrained radio resources, it is unlikely that 100 MHz of contiguous spectrum will be free for such systems. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W72/12H04W72/04H04W72/54
CPCH04W72/1278H04W72/1231H04W72/085H04W72/1284H04W28/04H04W52/0277H04L5/001H04W8/24H04L5/0048H04L5/0085H04L5/0098Y02D30/70H04W72/542H04W72/21
Inventor B·林多夫S·安德森L·孙德斯特伦
Owner TELEFON AB LM ERICSSON (PUBL)