US 8,553,612 B2 · Coexistence of wireless personal area network and wireless local area network

Abstract

Wireless transceiver apparatus for operating in a part of the RF spectrum which is shared with a co-located second wireless transceiver apparatus. The first wireless transceiver apparatus includes, a wireless transceiver unit; an arbitration interface for interfacing with an arbitration entity which arbitrates access to the shared part of the RF spectrum between the first wireless transceiver apparatus and the second wireless transceiver apparatus; wherein the arbitration interface is adapted to signal time periods when the wireless transceiver unit is operational, or requests to be operational; and wherein the arbitration interface is adapted to signal data about and commands to the arbitration entity during other time periods. An enhanced arbitration entity is adapted to automatically detect and switch between two modes of interference reduction, e.g. a first interference reduction means such as AFR, a second interference reduction means such as PTA. The arbitration entity gets the information of the first wireless transceiver via the arbitration interface.

Claims36

Dependent claims

A first wireless transceiver apparatus for operating in a part of a Radio Frequency (RF) spectrum which is shared with a co-located second wireless transceiver apparatus, the first wireless transceiver apparatus comprising:

a wireless transceiver unit adapted to support a plurality of different wireless links, at least one of the plurality of different wireless links having a link identifier;
an arbitration interface having a plurality of interface lines and adapted to interface with an arbitration entity which arbitrates access to the shared part of the RF spectrum between the first wireless transceiver apparatus and the second wireless transceiver apparatus;
wherein the arbitration interface is adapted to signal time periods when the wireless transceiver unit is operational, or requests to be operational;
and
wherein the arbitration interface is adapted to send data to the arbitration entity during other time periods, wherein the data includes at least the link identifier of one of the plurality of different wireless links and data associated with the link identifier.

2 more elements

An arbitration entity for arbitrating access to Radio Frequency (RF) spectrum which is shared between a first wireless transceiver apparatus adapted to support a plurality of different wireless links, at least one of the plurality of different wireless links having a link identifier, and a second wireless transceiver apparatus which is co-located with the first wireless transceiver apparatus, the arbitration entity comprising:

a first arbitration interface adapted to interface with the first wireless transceiver apparatus;
wherein the arbitration interface is adapted to receive a signal indicating time periods when a wireless transceiver unit of one of the wireless transceivers is operational, or requests to be operational, and wherein the arbitration interface is adapted to receive data from the first wireless transceiver apparatus during other time periods, wherein the data includes at least a link identifier of one of the plurality of different wireless links and data associated with the link identifier.

A method, by an arbitration entity, of mitigating interference between first and second co-located wireless transceiver apparatuses, each transceiver apparatus operating in a same Radio Frequency (RF) spectrum, at least the first transceiver apparatus maintaining a plurality of wireless links and operative in a first mode in which it signals to the arbitration entity time periods when the first wireless transceiver unit is operational, or requests to be operational, and a second mode in which it sends data to the arbitration entity during other time periods, wherein each transceiver apparatus is coupled to the arbitration entity via a respective arbitration bus, the method comprising:

receiving from the first transceiver apparatus, on the first arbitration bus operating in the second mode, serial data including information relevant to the operation of the first transceiver apparatus, wherein at least some data is associated with a particular link identifier;
storing data in a look-up table indexed by link identifiers;
receiving from the second transceiver apparatus, on the second arbitration bus, a request to be operational;
receiving from the first transceiver apparatus, on the first arbitration bus operating in the first mode, a request to be operational to service a particular link, and further receiving a link identifier;
indexing the look-up table with the received link identifier and retrieving data associated with the link identifier;
and
based on the retrieved data, making an arbitration decision between the first and second transceiver apparatuses being operational.

4 more elements

Dependencies are inferred from the claim text.

Coexistence of wireless personal area network and wireless local area network

Life of this patent

Coexistence of wireless personal area network and wireless local area network

Life of this patent

Abstract

Claims36