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Uplink subframe scheduling method for time division multiplexing system

A technology of time division multiplexing system and scheduling method, which is applied in the field of uplink subframe scheduling, can solve problems such as no technical solutions are given, and achieve the effects of saving overhead, increasing uplink coverage, and improving performance

Inactive Publication Date: 2010-06-09
ZTE CORP
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Problems solved by technology

[0014] At present, the methods of bundling-TTI uplink scheduling under various configurations are under discussion, and no specific technical solutions that can be implemented have been given, especially how to apply bundling-TTI uplink scheduling to LTE TDD systems, and multi- Technical solution for simultaneous use of TTI uplink scheduling

Method used

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  • Uplink subframe scheduling method for time division multiplexing system
  • Uplink subframe scheduling method for time division multiplexing system
  • Uplink subframe scheduling method for time division multiplexing system

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Embodiment Construction

[0032] Since the two uplink scheduling methods, multi-TTI and bundling-TTI, have their own advantages, the eNodeB can perform multi-TTI uplink scheduling and bundling-TTI uplink scheduling according to the preset uplink scheduling criteria when receiving the scheduling request sent by the terminal. One of the uplink scheduling methods is selected, and the terminal is notified of the selected uplink scheduling method through an uplink scheduling grant (UL grant).

[0033] The present invention will be described in detail below with reference to the drawings and embodiments.

[0034] The uplink subframe scheduling method proposed by the present invention requires the eNodeB to pre-determine which uplink scheduling judgment criterion to use to determine which uplink scheduling method the UE should use, that is, use multi-TTI uplink scheduling or bundling-TTI uplink scheduling.

[0035] The uplink scheduling judgment criterion may be determined by (but not limited to) one or more ...

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Abstract

The invention discloses an uplink subframe scheduling method for a time division multiplexing system. The method comprises the following steps that: after receiving a scheduling request transmitted by a user terminal, a base station selects an uplink scheduling mode from multi-subframe uplink scheduling and bundling subframe uplink scheduling, and informs the user terminal of the selected uplink scheduling mode through an uplink scheduling authority; and the user terminal transmits uplink data in the uplink scheduling mode selected by the user terminal by adopting the base station. If the base station selects the multi-subframe uplink scheduling mode for the user terminal, then the uplink scheduling authority which comprises an uplink index is transmitted to the user terminal; and if the base station selects the bundling subframe uplink scheduling mode for the user terminal, then the uplink scheduling authority which does not contain the uplink index is transmitted to the user terminal. The uplink subframe scheduling method of the invention can select the multi-subframe uplink scheduling and the bundling subframe uplink scheduling dynamically according to factors of a channel condition, position information, a moving speed and the like of the user terminal.

Description

technical field [0001] The invention relates to the communication field, in particular to an uplink subframe scheduling method of a time division multiplexing system. Background technique [0002] A 10 ms radio frame in an LTE (Long Term Evolution, long term evolution) TDD (Time Division Duplex, time division duplex) system is divided into 10 time slots (subframes) with a length of 1 ms. Wherein, subframe 0 is fixedly used for downlink; subframe 1 is a special subframe. The allocation of uplink and downlink time slots (subframes) in the LTE TDD system is asymmetrical, and there are 7 types in total, as shown in Table 1: [0003] [0004] Table 1 [0005] in: [0006] D stands for DL ​​subframe (downlink subframe); [0007] U stands for UL subframe (uplink subframe); [0008] S stands for Specific subframe (special subframe), which contains DwPTS (Downlink PilotTime Slot, downlink pilot time slot), and the first two OFDM (Orthogonal Frequency Division Multiplexing, Or...

Claims

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Application Information

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IPC IPC(8): H04B7/26H04J3/24
Inventor 袁明毕峰苟伟韩小江米德忠
Owner ZTE CORP
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