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Multi-access mode notification method and transmitting device for wireless link information transmission

A technology of information transmission and wireless link, applied in the field of multi-access notification method and its transmission device, which can solve the problems of no standardization and less research on notification methods, and achieve the effect of complete indication

Active Publication Date: 2014-03-19
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0019] At present, the research on the multiple access method based on the OFDM system is a hot spot, but there are few studies on the notification method of the multiple access method for the system using multiple multiple access methods, and there is no standardized and complete method to make the base station or terminal The sending and receiving ends can learn the multiple access method used by the other end to transmit wireless link information through effective and flexible overhead at the right time

Method used

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  • Multi-access mode notification method and transmitting device for wireless link information transmission
  • Multi-access mode notification method and transmitting device for wireless link information transmission
  • Multi-access mode notification method and transmitting device for wireless link information transmission

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0061] It is assumed that uplink information transmission in the system adopts two multiple access methods, that is, the SC-FDMA method of the existing system and the second multiple access method clustered SC-FDMA.

[0062] The base station and the terminal agree in advance on the indication signaling of the uplink multiple access mode, and the "0" of the 1-bit indication signaling indicates the SC-FDMA mode, and the "1" of the 1-bit indication signaling indicates the clustered SC-FDMA mode.

[0063] When a terminal in the non-cell handover state wants to access the system, it triggers a contention-based random access process, such as image 3 shown, including the following steps:

[0064] The base station notifies the terminal of its uplink multiple access mode through the downlink message of the random access process, including the following steps:

[0065] 310: The terminal (UE) will randomly select a random access preamble (Preamble code) and transmit it to the base stat...

example 2

[0071] Assuming that the uplink information transmission in the system adopts three multiple access methods, that is, SC-FDMA of the existing system, the second multiple access method clustered SC-FDMA, and the third multiple access method is N×SC-FDMA, here When there are multiple terminals in the system.

[0072] The base station and the terminal pre-agreed on the indication signaling of the uplink multiple access mode, and the "00" of the 2-bit indication signaling is used to indicate the SC-FDMA mode, and the "01" of the 2-bit indication signaling is used to indicate the clustered SC-FDMA mode. "10" of the 2-bit indication signaling indicates the N×SC-FDMA scheme.

[0073] When a terminal in the non-cell handover state wants to access the system, it triggers a contention-based random access process, such as Figure 4 shown, including the following steps:

[0074] 410: The terminal (UE) will randomly select a random access preamble (Preamble code) and transmit it to the b...

example 3

[0083] Assume that the uplink information transmission in the system adopts four multiple access methods, namely SC-FDMA of the existing system and the second multiple access method OFDMA, the third multiple access method clustered SC-FDMA and the fourth multiple access method N×SC-FDMA, there are multiple terminals in the system at this time.

[0084] The base station and the terminal pre-agreed on the indication signaling of the uplink multiple access mode, and the "00" of the 2-bit indication signaling is used to indicate the SC-FDMA mode, and the "01" of the 2-bit indication signaling is used to indicate the OFDMA mode. "10" of the bit indication signaling indicates the clustered SC-FDMA mode, and "11" of the 2-bit indication signaling indicates the N×SC-FDMA mode.

[0085] When there is a terminal in the cell switching state that wants to access the system, it triggers a non-contention-based random access process, such as Figure 5 shown, including the following steps: ...

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Abstract

The invention discloses a multi-access mode notification method and a transmitting device for wireless link information transmission, which are suitable for a wireless communication system using various multi-access modes. The method comprises the following steps that: a base station and a terminal make an agreement on indication signaling of an uplink multi-access mode in advance; and the base station adds the indication signaling into downlink information when transmitting the downlink information, wherein the indication signaling is used for indicating the multi-access mode of uplink information transmitted by the terminal; and the uplink information comprises control domain information and / or service domain information. The base station can timely notify the terminal of the multi-access mode for the uplink wireless link information transmission of the terminal, so the method properly solves the problem of notification of the multi-access mode under the condition that various multi-access modes are adopted and also arranges the notification expenditure according to the notification requirement of the multi-access mode so as to ensure complete and flexible indication of the multi-access mode.

Description

technical field [0001] The present invention relates to the indication of the link information interaction mode of the wireless communication system, in particular to the notification method and the transmitting device of the multiple access mode of wireless link information transmission in the new generation mobile communication system (LTE / LTE-Advanced, IMT-Advanced). Background technique [0002] In an Orthogonal Frequency Division Multiplexing (OFDM, Orthogonal Frequency Division Multiplexing) system, the data stream is decomposed into several sub-data streams and transmitted in an OFDM manner, so that each sub-data stream has a relatively low transmission bit rate, and then modulate each sub-data stream to the corresponding sub-carrier for parallel transmission. It should be pointed out that not only are the OFDM subcarriers mutually orthogonal, but also the subcarriers have 1 / 2 overlap with each other. [0003] In the LTE system, the peak-to-average power ratio (PAPR,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/26H04L27/26
Inventor 毕峰苟伟袁明
Owner ZTE CORP
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