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Band allocating method

A frequency band allocation and frequency band technology, which is applied in the field of frequency band allocation, can solve problems such as the inability to reduce the packet reciprocating delay time, the RTT response time, and the inability to guarantee the output of the RTT measurement command signal 1 and the RTT response command signal, etc., to achieve the effect of reducing the response time

Inactive Publication Date: 2012-06-13
PANASONIC CORP
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0010] However, in the above-mentioned band allocation method for packet communication, when the HCCA period T of transmitting content data from the source device to the sink device HCCA When the proportion of the entire period is large, that is, when the frequency band for other communications is not sufficiently allocated due to the flow of content data, the output of the RTT measurement command signal 1 and the RTT response command signal 2 cannot be guaranteed, and the packet round-trip delay time cannot be reduced. The issue of minimizing the response time of RTT

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no. 1 Embodiment approach

[0056] figure 1 It is a block diagram showing the configuration of a wireless communication system for transmitting a wireless signal having AV stream data using the band allocation method for packet communication according to the first embodiment of the present invention, figure 2 It is a sequence diagram showing the band allocation method for packet communication according to the first embodiment. also, figure 1 The configuration of the wireless communication system is applicable to the first to fifth embodiments.

[0057] The frequency band allocation method for packet communication and the communication system using the method according to the first embodiment are characterized in that when measuring the packet round-trip delay time RTT from the source device 10 to the sink device 30, the source device 10 to the sink device 30 The frequency band management unit 37 of the wireless communication network of the wireless communication system in the controller 31 transmits...

no. 2 Embodiment approach

[0079] image 3 It is a sequence diagram showing the band allocation method for packet communication according to the second embodiment of the present invention. Additionally, the figure 1 The wireless communication system adopts the figure 1 as well as figure 2 The same sign of the sign. The bandwidth allocation method for packet communication of the second embodiment differs from that of the first embodiment in the following points.

[0080] (1) The frequency band management unit 37 allocates the reservation period of the RTT measurement command signal 1 instead of the contention period Trandom in the time period from 1 / 4 point B of the cycle Tbeacon of the beacon signal 4 to the time when the predetermined time period Tpre has elapsed. Tsource.

[0081] (2) The frequency band management unit 37 distributes the RTT response command signal instead of the reservation period Tsource of the RTT measurement command signal 1 during the time period from the midpoint A of th...

no. 3 Embodiment approach

[0090] Figure 4 It is a sequence diagram showing a band allocation method for packet communication according to the third embodiment of the present invention. Additionally, the figure 1 The wireless communication system adopts the figure 1 as well as figure 2 The sign of the same sign. The band assignment method for packet communication of the third embodiment differs from that of the first embodiment in the following points.

[0091] (1) The band management unit 37 assigns the contention period Trandom to a time period from after the beacon signal 4 to when a predetermined time period Tpre elapses.

[0092] (2) The frequency band management unit 37 allocates the reserved period Tsource of the RTT measurement command signal 1 to the time period from the midpoint A of the period Tbeacon in which the beacon signal 4 is allocated to the time D when a predetermined time period Tpre elapses.

[0093] (3) The frequency band management unit 37 allocates the reservation perio...

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Abstract

When the packet go-and-return delay time RTT of a go-and-return packet from a source device (10) to a sink device (30) is measured, the source device (10) requires a band management section (37) of the network to allocate a band for the go-and-return packet, the band management section (37) transmits the reservation time Tsource for sending a packet from the source device (10) to the sink device (30) and the reservation time Tsink for returning the packet from the sink device (30) to the source device (10) by means of a beacon signal, the reservation time Tsource is allocated to the period oftime from the middle point of the period Tbeacon of the beacon signal, and the reservation time Tsink is allocated to the middle point between the reservation time Tsource and the beacon signal immediately after the reservation time Tsource.

Description

technical field [0001] The present invention relates to a frequency band allocation method for packet communication and a communication system using the method. In particular, in a communication system that transmits packet data of content that requires copyright protection, for example, it is used for measuring video and audio equipment (hereinafter referred to as AV equipment.), that is, between a source (source) device and a sink (sink) device. A method for allocating frequency bands for packet communications with a packet round-trip delay time RTT (Round Trip Time) and a communication system using the method. Background technique [0002] At present, digital system infrastructure (network infrastructure) is equipped with digital broadcasting and high-speed Internet, and at the same time, large-capacity recording media such as DVD and BD are popularized, and anyone can easily obtain digital content without deterioration through the network. . In this context, the method...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/56H04W72/04H04N21/2385H04N21/647H04W24/06H04W4/06H04W72/10H04W72/14H04W84/12
CPCH04W24/08H04L47/80H04L43/0864H04L47/10H04L47/824H04N21/2385H04W72/0493H04N21/64738H04L47/72H04W72/0406H04L12/5695H04L47/826H04L47/788H04W72/085H04W28/26H04W72/04H04L47/70H04W72/20
Inventor 龙田明浩船引诚大植裕司崎村俊夫
Owner PANASONIC CORP
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