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Wireless communication method, system and equipment

A technology for wireless communication and communication frames, which is applied in the directions of wireless communication, communication between multiple stations, electrical components, etc. It can solve the problem that the frame structure and communication method are no longer suitable for medium and short-distance wireless communication systems, channel capacity waste, user Experience reduction and other problems, to achieve the effect of flexible and variable frame structure, improve system efficiency and performance, and improve system efficiency

Active Publication Date: 2012-09-26
BEIJING NUFRONT MOBILE MULTIMEDIA TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Although the Femto system also allocates wireless resources for different terminals through scheduling for uplink and downlink communication, its statically configured frame structure cannot flexibly allocate wireless resources for uplink and downlink, and cannot adapt to service changes with a small granularity. When it is out of balance with resource allocation, it may cause long queues, reduce user experience, or cause waste of channel capacity
[0007] The frame structure and communication methods in these existing systems are no longer applicable to the newly defined short- and medium-range wireless communication systems, and more applicable implementation solutions need to be proposed

Method used

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  • Wireless communication method, system and equipment
  • Wireless communication method, system and equipment
  • Wireless communication method, system and equipment

Examples

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Embodiment 1

[0077] In the first embodiment, a system frame structure provided by the present invention is specifically described.

[0078] figure 1 It is a schematic diagram of a system frame structure provided by Embodiment 1 of the present invention. Such as figure 1 As shown, the abscissa represents time, and the ordinate represents frequency. A TDD frame includes a downlink subframe DL and an uplink subframe UL, and there is a downlink guard interval DGI and an uplink guard interval UGI between the downlink subframe and the uplink subframe. The downlink guard interval is a sending and receiving guard interval from a downlink subframe to an uplink subframe. The uplink guard interval UGI is a transceiving guard interval from an uplink subframe to a downlink subframe. The downlink subframe DL and the uplink subframe UP of the TDD frame are divided into different channels according to their functions, and each channel is divided into different fields according to their functions.

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Embodiment 2

[0134] In the second embodiment, based on figure 2 The frame structure of the system is combined with the working examples of the system to describe the workflow in detail.

[0135] figure 2 It is a schematic diagram of the system frame structure provided by Embodiment 2 of the present invention.

[0136]The specific workflow is described below, as follows:

[0137] After the AP is turned on, the working frequency and working bandwidth are selected, and the preamble sequence is sent within its working bandwidth.

[0138] The system statically configures 2 OFDM symbols for the preamble (1 OFDM symbol for the short preamble and 1 OFDM symbol for the long preamble), 1 OFDM symbol for the system information channel, and other channels are indicated by the system information channel.

[0139] The control information can be sent in a flexible manner, which supports sending the control information on the corresponding sub-channel according to the resource allocation result of ea...

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Abstract

The invention discloses a wireless communication method which comprises the following steps of: transmitting one or more communication frames between network equipment and terminal equipment, wherein each communication frame comprises a downlink subframe and an uplink subframe, and a guard interval is formed between the downlink subframe and the uplink subframe; and dynamically configuring structures of the downlink subframe and the uplink subframe in each frame in a process of transmitting the one or more communication frames, wherein a dynamically configured downlink subframe at least comprises a leading sequence, a system information channel, a control channel and a downlink transmission channel, and a dynamically configured uplink subframe at least comprises an uplink transmission channel. The invention also discloses a wireless communication system. The frame structure is dynamically configured, so that uplink and downlink wireless transmission resources can be dynamically allocated based on service requirements, and future data service requirements with rich kinds and different characteristics can be well dynamically met.

Description

technical field [0001] The invention belongs to the field of wireless communication, and in particular relates to a wireless communication method, system and equipment. [0002] Background technique [0003] In recent years, the wireless communication systems used in short and medium communication distances include wireless local area network WiFi technology based on 802.11 standard, Bluetooth system based on 802.15, and Femto technology for indoor applications derived from mobile communication systems. [0004] 802.11-based WiFi technology is the most widely used wireless network transmission technology today. Since the WiFi system adopts the carrier sense / collision avoidance (CSMA / CA, Carrier Sense Multiple Access with Collision Avoidance) mechanism, the system efficiency is low and the wireless resources are greatly wasted. The root cause of this problem is that the CSMA / CA mechanism is a contention-based random multiple access mechanism. Access points (AP, Access Point...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/04H04W72/12H04W74/08H04B7/26
Inventor 刘慎发王竞雷俊姚惠娟于晓燕曾勇波王加庆潘立军闫志刚鲍东山
Owner BEIJING NUFRONT MOBILE MULTIMEDIA TECH
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