Reusing frequencies of a fixed and/or mobile communications system
First Claim
1. A communications system, comprising:
- a first wireless communications system configured to provide wireless communications over short range wireless communications links using a first frequency band; and
a second wireless communications system configured to provide wireless communications using at least a portion of the first frequency band;
wherein the first wireless communications system is a Dedicated Short Range Communications (DSRC) system that is configured to provide information to/from transportation vehicles using a DSRC frequency band;
wherein the DSRC system comprises one or more road-side access points configured to exchange information with transceivers that are installed in vehicles such that frequencies used by the DSRC system are used at or near roads/highways by the DSRC system and remain unused by the DSRC system remote from the roads/highways;
wherein the second wireless communications system is not a DSRC system and is not configured to provide information to/from transportation vehicles; and
wherein the second wireless communications system comprises at least one base station that is located remote from the roads/highways and that is configured to use at least one frequency of the DSRC frequency band that remains unused by the DSRC system remote from the roads/highways.
13 Assignments
0 Petitions
Accused Products
Abstract
A communications system includes a first wireless communications system configured to provide wireless communications over a first frequency band, and a second wireless communications system configured to provide wireless communications using at least a portion of the first frequency band. The system includes an inter-system communications link between the first wireless communications system and the second wireless communications system. The inter-system communications link is used to coordinate the use of the first frequency band. The system further includes an interference reducer configured to reduce interference between the first wireless communications system and the second wireless communications system. Related methods are also disclosed.
134 Citations
21 Claims
-
1. A communications system, comprising:
-
a first wireless communications system configured to provide wireless communications over short range wireless communications links using a first frequency band; and a second wireless communications system configured to provide wireless communications using at least a portion of the first frequency band; wherein the first wireless communications system is a Dedicated Short Range Communications (DSRC) system that is configured to provide information to/from transportation vehicles using a DSRC frequency band; wherein the DSRC system comprises one or more road-side access points configured to exchange information with transceivers that are installed in vehicles such that frequencies used by the DSRC system are used at or near roads/highways by the DSRC system and remain unused by the DSRC system remote from the roads/highways; wherein the second wireless communications system is not a DSRC system and is not configured to provide information to/from transportation vehicles; and wherein the second wireless communications system comprises at least one base station that is located remote from the roads/highways and that is configured to use at least one frequency of the DSRC frequency band that remains unused by the DSRC system remote from the roads/highways. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A wireless communications method comprising:
-
providing short range wireless communications from a first wireless communications system using a frequency band; providing wireless communications from a second wireless communications system using at least a portion of the frequency band; wherein the first wireless communications system is a Dedicated Short Range Communications (DSRC) system that is configured to provide information to/from transportation vehicles using a DSRC frequency band; wherein the DSRC system comprises one or more road-side access points configured to exchange information with transceivers that are installed in vehicles such that frequencies used by the DSRC system are used at or near roads/highways by the DSRC system and remain substantially unused by the DSRC system remote from the roads/highways; wherein the second wireless communications system is not a DSRC system and is not configured to provide information to/from transportation vehicles; and wherein the second wireless communications system comprises at least one base station that is located remote from the roads/highways and that is configured to use at least one frequency of the DSRC frequency band that remains unused by the DSRC system remote from the roads/highways. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
-
-
18. A wireless communications system comprising:
-
at least one base station that is configured to provide wireless communications using at least some frequencies that are also used by a Dedicated Short Range Communications (DSRC) system that is configured to provide wireless communications over short range wireless communications links to/from transportation vehicles using a DSRC frequency band; wherein the DSRC system comprises one or more road-side access points configured to exchange information with transceivers that are installed in vehicles such that frequencies used by the DSRC system are used at or near roads/highways by the DSRC system and remain substantially unused by the DSRC system remote from the roads/highways; and wherein the at least one base station is not part of the DSRC system, is located remote from the roads/highways and is configured to use at least one frequency of the DSRC frequency band that remains unused by the DSRC system remote from the roads/highways. - View Dependent Claims (19)
-
-
20. A wireless communications system comprising:
-
at least one transmitter/receiver that is/are configured to transmit/receive information using at least some frequencies that are also used by a Dedicated Short Range Communications (DSRC) system that is configured to provide wireless communications over short range wireless communications links to/from transportation vehicles using a DSRC frequency band; wherein the DSRC system comprises one or more road-side access points configured to exchange information with transceivers that are installed in vehicles such that frequencies used by the DSRC system are used at or near roads/highways by the DSRC system and remain substantially unused by the DSRC system remote from the roads/highways; and wherein the at least one transmitter/receiver is/are not part of the DSRC system, is located remote from the roads/highways and is configured to use at least one frequency of the DSRC frequency band that remains substantially unused by the DSRC system remote from the roads/highways.
-
-
21. A wireless communications method comprising:
-
transmitting/receiving information via at least one transmitter/receiver using at least some frequencies that are also used by a Dedicated Short Range Communications (DSRC) system that is configured to provide wireless communications over short range wireless communications links to/from transportation vehicles using a DSRC frequency band; wherein the DSRC system comprises one or more road-side access points configured to exchange information with transceivers that are installed in vehicles such that frequencies used by the DSRC system are used at or near roads/highways by the DSRC system and remain substantially unused by the DSRC system remote from the roads/highways; and wherein the at least one transmitter/receiver is not part of the DSRC system, is located remote from the roads/highways and is configured to use at least one frequency of the DSRC frequency band that remains substantially unused by the DSRC system remote from the roads/highways.
-
Specification