Control system and multiple access method in wireless communication system
First Claim
1. A wireless communication system for providing a service in time and frequency division duplexing modes, the system comprising:
- a wireless terminal for transmitting a duplexing mode determination factor when a call is established, receiving a command for at least one of a time division duplexing mode and a frequency division duplexing mode for reverse transmission, determining an access method and a hopping mode according to each of the time and frequency division duplexing modes, and establishing a forward channel and a reverse channel according to the set time or frequency division duplexing mode for reverse transmission to perform communication; and
a base station for receiving the duplexing mode determination factor from the wireless terminal when the call is established, setting the at least one of the time division duplexing mode and the frequency division duplexing mode for the reverse transmission, setting a time division duplexing mode for forward transmission according to the received duplexing mode determination factor, determining a frequency hopping mode and a multiple access mode, and communicating with the wireless terminal according to the determined frequency hopping mode and the determined multiple access mode.
1 Assignment
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Accused Products
Abstract
A multiple access method in a wireless communication system using a plurality of multiple access techniques is provided. When a call is established with a wireless terminal, the terminal transmits a duplexing mode determination factor to the base station to set a time or frequency division duplexing mode for reverse transmission and determine access and hopping modes according to each of the division duplexing modes, and establishes forward and reverse channels according to the set time or frequency division duplexing mode for reverse transmission to communicate with the base station. The base station receives the duplexing mode determination factor from the terminal, sets a time or frequency division duplexing mode for reverse transmission and sets a time division duplexing mode for forward transmission based on the received factor, and determines frequency hopping and multiple access modes to communicate with the terminal according to the determined frequency and multiple access modes.
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Citations
28 Claims
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1. A wireless communication system for providing a service in time and frequency division duplexing modes, the system comprising:
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a wireless terminal for transmitting a duplexing mode determination factor when a call is established, receiving a command for at least one of a time division duplexing mode and a frequency division duplexing mode for reverse transmission, determining an access method and a hopping mode according to each of the time and frequency division duplexing modes, and establishing a forward channel and a reverse channel according to the set time or frequency division duplexing mode for reverse transmission to perform communication; and a base station for receiving the duplexing mode determination factor from the wireless terminal when the call is established, setting the at least one of the time division duplexing mode and the frequency division duplexing mode for the reverse transmission, setting a time division duplexing mode for forward transmission according to the received duplexing mode determination factor, determining a frequency hopping mode and a multiple access mode, and communicating with the wireless terminal according to the determined frequency hopping mode and the determined multiple access mode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A call control method in a base station of a wireless communication system for communicating with a wireless terminal in time and frequency division duplexing modes, the method comprising the steps of:
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checking a duplexing mode determination factor received from the wireless terminal when a call is allocated to the wireless terminal; determining whether the wireless terminal is located in one of a local area and a remote area of the base station, based on the duplexing mode determination factor; if the wireless terminal is in the local area, allocating a time division duplexing channel to forward and reverse links of the wireless terminal; if the wireless terminal is in the remote area, allocating a time division duplexing channel to a forward link of the wireless terminal; determining a frequency hopping mode and a multiple access mode for the allocated channel; and allocating a frequency division duplexing channel to a reverse link of the wireless terminal to communicate with the wireless terminal. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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Specification