CN1137561C

CN1137561C - Signal transmission method in radio network

Info

Publication number: CN1137561C
Application number: CNB011047194A
Authority: CN
Inventors: 黄志声; 欧瑞龙; 詹孝顺
Original assignee: ZHIJIE SCIENCE & TECHNOLOGY Co Ltd
Current assignee: ZHIJIE SCIENCE & TECHNOLOGY Co Ltd
Priority date: 2001-02-20
Filing date: 2001-02-20
Publication date: 2004-02-04
Anticipated expiration: 2021-02-20
Also published as: CN1371199A

Abstract

The present invention relates to a signal transmission method for a radio network, which is used for transmitting a signal between a primary access point (AP) and a secondary access point. The signal transmission method comprises the steps that a third access point is provided, and the third access point has the capabilities of receiving and sending out the signal transmitted between the primary access point and the secondary access point; when the primary access point transmits the signal to the secondary access point, the signal is first transmitted to the third access point and then transmitted to the secondary access point in a radio transmitting mode, and the signal is transmitted by means of the primary access point and the secondary access point.

Description

The signal transfer method of wireless network

The present invention relates to a kind of signal transfer method of wireless network.

The development of WLAN (wireless LAN) has become the rising star in the LAN, compared with traditional wired local area network, WLAN has many advantages, for example can remove the puzzlement of distribution from, client can be furnished any place in a particular space, for using portable digital product (for example notebook computer), and can be online in acceptable arbitrary corner and main frame easily, carry out communication or online, quite convenient.Therefore, WLAN will certainly outmatch the main flow that becomes LAN on traditional LAN in future.

Figure 1 shows that the framework of general WLAN.It is online with other wireless client 11 that each wireless client 11 in the WLAN can pass through receiving station AP (Access Point) 10, and then by hub (HUB) come with cable network 12 on each main frame 13 carry out online, wireless client 11 also can directly connect cable network 12 by main frame 13, and then carries out online with the network (for example world-wide web) of outside.Each wireless client 11 ornaments do not have the restriction in space in the zone that signal can reach, within 800 chis, all can connect line with main frame or AP usually, therefore, undertaken by radio area network online, convenient more than wired LAN.On hardware is equipped with, only need set up an AP, or add an AP interface card, and add a wireless network card 14 at wireless client at main frame, can utilize wireless transmission to reach the effect online with each main frame.Wherein, each wireless client in the

signal distributions scope

101 and 131 all can come and each main frame or 11 communications of each wireless client by the mode of wireless telecommunications, but wireless client 15 is because outside each signal distributions scope, so can only independently working, can't carry out online with other main frame 13 or wireless client 11.

See also Fig. 2.Second floor is a computer room in the information building, existing building, and the 3rd floor is an office, and the 4th floor is the research department.The computer of each floor has by the wireless mode of acceptance point 10 online, also has by cable network 12 online.

In existing wireless network architecture, each acceptance point (AP) is though can form a WLAN alone, and each other online still finished in wired mode.In the large-scale WLAN, many acceptance points (AP) are arranged usually, online if each acceptance point all comes in wired mode, WLAN will be had a greatly reduced quality in the advantage of exempting in the distribution puzzlement.

The objective of the invention is to the shortcoming that present each acceptance point of wireless network of basis still connects in wired mode, a kind of signal transfer method of wireless network is provided, it imports WLAN with the idea of relay station, it is online that each acceptance point also can be come wirelessly, makes large-scale WLAN be completely free of the puzzlement of distribution.

For achieving the above object, the signal transfer method of wireless network of the present invention, by means of one first acceptance point (AP, Access Point) transmits a signal and between the secondary destination, be characterized in, it comprises the following steps: to provide one the 3rd acceptance point, and it has the ability that receives the described signal that sends described first acceptance point and described secondary destination; And when described first acceptance point transmits described signal to described secondary destination, described signal is with a Wireless transmission mode, be sent to described the 3rd acceptance point earlier, be resent to described secondary destination, by means of transmitting described signal between described first acceptance point and the described secondary destination.

Further characteristics of the present invention are:

Described wireless network is a WLAN (Wireless LAN);

Each acceptance point and several wireless clients form a WLAN;

The running of described the 3rd acceptance point comprises the following steps: to receive a package; Whether the address, source of judging described package is consistent with described first acceptance point; Whether the destination address of judging described package is consistent with described secondary destination; And transmit described package;

The signal transfer method of described wireless network further comprises the following steps:

When described secondary destination transmits described signal to described first acceptance point, described signal is with a Wireless transmission mode, be sent to described relay station earlier, be resent to described first acceptance point, by means of transmitting described signal between described first acceptance point and the described secondary destination;

Described the 3rd acceptance point is a radio repeater station (Repeater);

The transmission of described signal meets the regulation of IEEE802.11.

Advantage of the present invention is: utilize relay station that each acceptance point on the wireless network needn't be linked with cable network again, directly pass through Wireless transmission mode, earlier package or signal are reached relay station, relend and help relay station to transfer to the purpose acceptance point, can exempt the puzzlement on each acceptance point distribution so fully, when the framework WLAN, also can become more efficient and flexibility is more arranged.Certainly, also relay station can be comprised in the acceptance point, like this, acceptance point (AP) is except forming the WLAN with some wireless clients, also can provide each AP between communication.

Be clearer understanding purpose of the present invention, characteristics and advantage, a preferred embodiment of the present invention be elaborated below in conjunction with accompanying drawing.

Fig. 1 is the framework one of existing WLAN;

Fig. 2 is the framework two of existing WLAN;

Fig. 3 is the WLAN planning chart with relay station of a preferred embodiment of the present invention;

Fig. 4 is the flow chart of the relay station transmission data of a preferred embodiment of the present invention.

See also Fig. 3.The signal transfer method of wireless network of the present invention is by means of one first acceptance point, 31 (AP, Access Point) transmits a signal and between the secondary destination 33, the 3rd acceptance point is a relay station 32, has the ability that receives the described signal that sends described first acceptance point 31 and described secondary destination 33, when described first acceptance point 31 sends a signal to described secondary destination 33, described signal is with a Wireless transmission mode, be sent to the relay station 32 of described the 3rd acceptance point earlier, be resent to described secondary destination 33, can break away from the bundle of cable network by the transmission between acceptance point and the acceptance point and obey, the distribution of whole large-scale LAN is greatly simplified.Fig. 3 is to be example with the plane floor, and its application also can expand between floor and the floor certainly, perhaps between building and the building.The example relay station, can make two originally can only by the online acceptance point of cable network (AP) become can directly carry out coming wirelessly online, therefore, can simplify problem on many circuit distributions, WLAN set up the more efficient and flexibility that also can become.

Fig. 4 is the flow chart of relay station transmission data of the present invention, at first import a package, comprise source address (SA in the package, Source Address) with destination address (DA, Destination Address), earlier judge from the address, source of package whether it surpasses the time of routing update, if surpass, then jump to the replacement routing update time, if do not surpass, the path of then further judging described input package whether be registered in form on content consistent, if inconsistent, also would be to abandon disregarding, if consistent, the package of then representing relay station and being received is signal or the data that former acceptance point transmits really, is therefore received.

Then reset the routing update time, be preset as 15 seconds.The source of package determine after, then to determine the destination of package, whether surpass the time of upgrading so judge the destination address in the package, surpassing then broadcasting (Broadcast) knows for all relay stations, if also do not surpass and then judge whether destination address is group address, if group address, then equally being broadcast to all relay stations knows, if not location, group location, do you why then judge destination (PortID (DA))? if Ethernet (Ether Net) just reaches Ethernet with signal, if acceptance point AP then reaches signal the acceptance point AP of appointment on the IEEE802.11 wireless network, if another relay station then reaches next relay station, if what is not, can't judge the place to go from destination address, then broadcast away, allow the user on the all-network claim.

If with Fig. 3 is example, the operation workflow of relay station 32 of the present invention is packages that first acceptance point 31 is transmitted, and is passed to secondary destination 33, and the mode of its enforcement is a lot of certainly, and Fig. 4 is one of them example.

Claims

1, a kind of signal transfer method of wireless network by means of transmitting a signal between one first acceptance point and the secondary destination, is characterized in that it comprises the following steps:

One the 3rd acceptance point is provided, and it has the ability that receives the described signal that sends described first acceptance point and described secondary destination; Its running comprises: whether the destination address that whether address, source of receive a package, judging described package consistent with described first acceptance point, judge described package is consistent and transmit described package with described secondary destination;

When described first acceptance point transmits described signal to described secondary destination, described signal is with a Wireless transmission mode, be sent to described the 3rd acceptance point earlier, be resent to described secondary destination, by means of transmitting described signal between described first acceptance point and the described secondary destination; And

When described secondary destination transmits described signal to described first acceptance point, described signal is with a Wireless transmission mode, be sent to relay station earlier, be resent to described first acceptance point, by means of transmitting described signal between described first acceptance point and the described secondary destination.

2, the signal transfer method of wireless network as claimed in claim 1 is characterized in that, described wireless network is a WLAN.

3, the signal transfer method of wireless network as claimed in claim 1 is characterized in that, each acceptance point and several wireless clients form a WLAN.

4, the signal transfer method of wireless network as claimed in claim 1 is characterized in that, described the 3rd acceptance point is a radio repeater station.

5, the signal transfer method of wireless network as claimed in claim 1 is characterized in that, the transmission of described signal meets the regulation of IEEE802.11.