LOCAL AREA NETWORK TRANSLATING BI-DIRECTIONAL PACKET REPEATER

• US 20090154390A1
• Filed: 02/18/2009
• Published: 06/18/2009
• Est. Priority Date: 07/31/2003
• Status: Active Grant

• Current Assignee: Microsoft Technology Licensing LLC (Microsoft Corporation)
• Original Assignee: Microsoft Corporation
• Inventors: King, Wayne G.
• Granted Patent: US 8,085,701 B2
• Time in Patent Office: Days
• US Class Current: 370/315
• CPC Class Codes: H03D 7/161 all the frequency changers being connected in cascade
• CPC Class Codes: H04B 1/40 Circuits
• CPC Class Codes: H04B 7/15535 Control of relay amplifier gain amplifier gain control in general H03G3/00; gain control reducing self - or loop interference H04B7/15578
• CPC Class Codes: H04B 7/15542 Selecting at relay station its transmit and receive resources selection of wireless resources by user or terminal H04W72/02; arrangements affording multiple use of the transmission path by two-dimensional division of the resources H04L5/0003, or by allocating sub-channels H04L5/003
• CPC Class Codes: H04W 16/14 Spectrum sharing arrangements between different networks
• CPC Class Codes: H04W 16/26 Cell enhancers or enhancement, e.g. for tunnels, building shadow
• CPC Class Codes: H04W 4/18 Information format or content conversion, e.g. adaptation by the network of the transmitted or received information for the purpose of wireless delivery to users or terminals

Abstract

A translating bi-directional packet repeater includes a first antenna and a second antenna for receiving a wireless signal, amplifying it, and retransmitting it on a different channel. The channel associated with each of the antennas is separated in frequency sufficiently to ensure good isolation between the wireless signals that are received and then retransmitted. The wireless signal is down converted to an intermediate frequency (IF) that is passed through a band pass filter, and the filtered signal is then up converted and retransmitted on the different channel. A controller responds to a wireless signal on one of the antennas in selecting a path through the bi-directional amplifier and the antennas used to receive and retransmit the signal. The isolation between the received wireless signal and the retransmitted wireless signal is sufficient to avoid interference, and the retransmission takes place almost instantaneously to minimize the delay incurred.

Claims

1. A method for enabling wireless devices in a wireless network to better communicate by translating and retransmitting wireless signals, comprising the steps of:

(a) receiving a wireless signal from a first wireless device on a first channel operating on a first frequency, said wireless signal comprising data packets;

(b) down converting the wireless signal to an intermediate frequency signal;

(c) filtering the intermediate frequency signal to produce a filtered signal;

(d) up converting the filtered signal to produce an output signal at a second frequency used on a second channel, wherein the second frequency is substantially different than the first frequency; and

(e) retransmitting the data packets comprising the output signal as a wireless signal at the second frequency, for receipt by a second wireless device that is an intended recipient of the wireless signal transmitted from the first wireless devices wherein the method further comprises;

(f) receiving an acknowledgment wireless signal from the second wireless device on the second channel, which conveys an acknowledgment indicating that the output signal that was retransmitted has been received by the second wireless device;

(g) down converting the acknowledgment signal to an intermediate frequency signal that conveys the acknowledgment;

(h) filtering the intermediate frequency signal that conveys the acknowledgment to produce a filtered signal that conveys the acknowledgment;

(i) up converting the filtered signal that conveys the acknowledgment to produce an output signal at the first frequency that conveys the acknowledgment; and

(j) retransmitting the output signal that conveys the acknowledgment to the first wireless device at the first frequency and on the first channel.

2. The method of claim 1, wherein the step of receiving comprises the step of receiving the wireless signal on one of a first antenna and a second antenna that are spaced apart from each other, and wherein the step of retransmitting comprises the step of retransmitting the output signal on the other of the first antenna and the second antenna.

3. The method of claim 1, wherein a time interval between transmission of the wireless signal from the first wireless device and receipt of the acknowledgment by the first wireless device is less than a pre-specified acknowledgment interval, so that the first wireless device does not again transmit the same data packets to the second wireless device.

4. The method of claim 1, further comprising the step of amplifying the output signal before the step of retransmitting.

5. The method of claim 1, further comprising the step of amplifying the wireless signal before the step of down converting.

6. The method of claim 1, further comprising the step of amplifying the intermediate frequency signal before the step of filtering.

7. The method of claim 1, further comprising the step of providing an indication of a relative signal strength of the wireless signal received from the first wireless device.

8. The method of claim 1, further comprising the step of enabling a user to select the first channel and the second channel from among a plurality of available channels.