System and method for enhancing capacity for a wireless communication system
View Patent ↗A system and method for sharing a forward link time slot are disclosed. Information being sent to each user sharing a time slot in a 1× evolution data only (1×EV-DO) frame is assigned a number of Walsh codes and allocated an amount of transmit power. The total amount of transmit power used by a base transceiver station for a time slot is divided among the users. The number of Walsh codes and amount of transmit power assigned to each user sharing a time slot can be based upon the RF conditions being experienced by the user.
1. A method for transmitting information from a base transceiver station, the method comprising the acts of:
determining radio frequency conditions for a number of users;
assigning a number of Walsh codes to each of the number of users based on the determined radio frequency conditions; and
transmitting information to the number of users in a same time slot using the number of Walsh codes assigned to each user.
2. The method of claim 1 , wherein an amount of transmit power is assigned to each user based on the determined radio frequency conditions.
3. The method of claim 2 , wherein users with worse radio frequency conditions are assigned more transmit power than users with better radio frequency conditions.
4. The method of claim 1 , wherein the same time slot is transmitted in a 1× evolution data only (1×EV-DO) frame.
5. The method of claim 1 , wherein users with worse radio frequency conditions are assigned more Walsh codes than users with better radio frequency conditions.
6. A base transceiver station comprising:
logic which determines radio frequency conditions for a number of users;
logic which assigns a number of Walsh codes to each of the number of users, based on the determined radio frequency conditions; and
logic which transmits information to the number of users in a same time slot using the number of Walsh codes assigned to each user.
7. The base transceiver station of claim 6 , wherein an amount of transmit power is assigned to each user based on the determined radio frequency conditions.
8. The base transceiver station of claim 7 , wherein users with worse radio frequency conditions are assigned more transmit power than users with better radio frequency conditions.
9. The base transceiver station of claim 6 , wherein the same time slot is transmitted in a 1× evolution data only (1×EV-DO) frame.
10. The base transceiver station of claim 6 , wherein users with worse radio frequency conditions are assigned more Walsh codes than users with better radio frequency conditions.
11. A wireless communication device, comprising:
a transmitter which transmits information to a number of users in a single time slot; and
a processor including:
logic which determines radio frequency conditions for each of the number of users;
logic which assigns a number of Walsh codes to each of the number of users, based on the determined radio frequency conditions; and
logic which transmits information to the number of users in a same time slot using the number of Walsh codes assigned to each user.
12. The wireless communication device of claim 11 , wherein an amount of transmit power is assigned to each user based on the determined radio frequency conditions.
13. The wireless communication device of claim 12 , wherein users with worse radio frequency conditions are assigned more transmit power than users with better radio frequency conditions.
14. The wireless communication device of claim 11 , wherein the same time slot is transmitted in a 1× evolution data only (1×EV-DO) frame.
15. The wireless communication device of claim 11 , wherein users with worse radio frequency conditions are assigned more transmit power than users with better radio frequency conditions.
16. A computer-readable medium encoded with a computer program for transmitting information from a base transceiver station, the computer program comprising instructions for:
determining radio frequency conditions for a number of users;
assigning a number of Walsh codes to each of the number of users based on the determined radio frequency conditions; and
transmitting information to the number of users in a same time slot using the number of Walsh codes assigned to each user.
17. The computer-readable medium of claim 16 , wherein an amount of transmit power is assigned to each user based on the determined radio frequency conditions.
18. The computer-readable medium of claim 17 , wherein users with worse radio frequency conditions are assigned more transmit power than users with better radio frequency conditions.
19. The computer-readable medium of claim 16 , wherein the same time slot is transmitted in a 1× evolution data only (1×EV-DO) frame.
20. The computer-readable medium of claim 16 , wherein users with worse radio frequency conditions are assigned more Walsh codes than users with better radio frequency conditions.