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Network chip and network transmission/reception device

A technology of network chips and receiving devices, applied in data exchange networks, instruments, electrical digital data processing, etc., can solve problems such as uncontrollable interruptions

Inactive Publication Date: 2008-02-06
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, the above-mentioned network chips cannot control the issuance of interrupts based on the content of received packets

Method used

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  • Network chip and network transmission/reception device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0205] A transmission / reception system 1b according to another preferred embodiment of the present invention will be described below with reference to the drawings.

[0206] As shown in FIG. 5, the transmission / reception system 1b includes a network transmission / reception device 10b and a base station 20b.

[0207] Network communication is performed between the network transmission / reception apparatus 10b and the base station 20b by transmitting / receiving packets using a radio transmission path.

[0208] As in the case of Embodiment 1, the network transmission / reception apparatus 10b receives real-time packets and non-real-time packets from the base station 20b. That is, the base station 20b transmits a packet limited in delay time and a packet not limited in delay time to the network transmission / reception device 10b.

[0209] The packet transmission performed by the network transmission / reception device 10b differs from the packet transmission performed by the network trans...

Embodiment 3

[0310] A transmission / reception system 1c according to another preferred embodiment of the present invention will be described below with reference to the drawings.

[0311] As shown in FIG. 9, the transmission / reception system 1c includes a network transmission / reception apparatus 10c and a base station 20c.

[0312] Network communication is performed between the network transmission / reception apparatus 10c and the base station 20c by transmitting / receiving packets using a radio transmission path.

[0313] The packets received by the network transmission / reception device 10c from the base station 20c are limited to non-real-time packets.

[0314] This embodiment discloses a technique for reducing interruptions when the network transmission / reception device 10c is connected to the base station 20c through the network and when the connection at the application level is not performed (for example, when the mobile phone is in standby mode).

[0315] Here, being connected via the...

Embodiment 4

[0390] A transmission / reception system 1d as another preferred embodiment of the present invention will be described below with reference to the drawings.

[0391] As shown in FIG. 13, the transmission / reception system 1d includes a network transmission / reception apparatus 10d and a base station 20d.

[0392] Network communication is performed between the network transmission / reception device 10d and the base station 20d by transmitting / receiving packets using a radio transmission path.

[0393] The packets received by the network transmission / reception apparatus 10d from the base station 20d are limited to non-real-time packets.

[0394] This embodiment discloses techniques to reduce interruptions when no network connection is in progress.

[0395] The base station 20d transmits the beacon packet to a specific network among the plurality of networks. The data structure of the beacon packet is the same as that shown in FIG. 10 , and its description is omitted here. In the f...

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Abstract

Provided is a network chip that controls issuance of interrupts based on the contents of the received packets. The network chip receives a data packet containing a type that indicates a realtime packet or a not-realtime packet, where the realtime packet needs consideration of delay time, and the not-realtime packet does not need consideration of delay time. The network chip obtains a type by analyzing the received packet. When the obtained type indicates a realtime packet, the network chip stores the received packet into a realtime reception packet buffer, and issues an interrupt to the CPU immediately; and when the obtained type indicates a not-realtime packet, it stores the received packet into a not-realtime reception packet buffer, and issues an interrupt to the CPU after a predetermined time period passes, or after the number of packets stored in the not-realtime reception packet buffer reaches a predetermined number.

Description

[0001] This application is based on application 2006-212342 filed in Japan, the contents of which are incorporated herein by reference. technical field [0002] The present invention relates to techniques for making a network chip control interrupts issued to a CPU (Central Processing Unit). Background technique [0003] It is known to configure network chips and network transmit / receive devices to reduce the number of interrupts sent from the network chip to the CPU, allowing the CPU to sleep for longer periods of time, thereby saving energy consumed by the device. [0004] For example, the following document D1, Japanese Patent Application Laid-Open No. 2005-267294, discloses such a technique. [0005] In this technique, a network chip receives a data packet (hereinafter simply referred to as a packet), and stores the received packet in a buffer. The network chip issues an interrupt to the CPU after a predetermined time period elapses from receiving the packet, or after t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/02H04L12/56G06F13/24
CPCH04L12/40013
Inventor 甾山武士入江诚隆长尾彰文吉田武史
Owner PANASONIC CORP
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