发明名称 |
SYSTEMS AND METHODS FOR PROVIDING PUSH TO TALK FEATURE FOR WIRELESS COMMUNICATION SYSTEMS |
摘要 |
Systems and methods are provided for allowing a first wireless unit and a second wireless unit to share a single communication channel including a transmit frequency and a receive frequency. The systems and methods allow fo r a more spectrally efficient transmission of Push To Talk mode calls over a Time Division Multiple Access system. The systems and methods include assigning the single communication channel to the first wireless unit and th e second wireless unit, so that the first wireless unit and the second wireles s unit may alternatively transmit on the transmit frequency, and the first wireless unit and the second wireless unit may monitor the receive frequency ; receiving a first transmission from the first wireless unit on the transmit frequency; sending a signal to the first wireless unit indicating to the fir st wireless unit to stop transmitting; sending a signal to the second wireless unit that the second wireless unit can send a second transmission on the transmit frequency; and receiving the second transmission from the second wireless unit on the transmit frequency. The systems include a first wireles s unit, a second wireless unit, and a base station. The first wireless unit transmits on a transmit frequency of a communication channel and monitors a receive frequency of the communication channel. The second wireless unit monitors the receive frequency.
|
申请公布号 |
CA2375428(A1) |
申请公布日期 |
2000.12.07 |
申请号 |
CA20002375428 |
申请日期 |
2000.05.16 |
申请人 |
BELLSOUTH INTELLECTUAL PROPERTY CORPORATION |
发明人 |
AUSTIN, MARK D.;HEUBEL, MICHAEL L. |
分类号 |
H04W84/08;(IPC1-7):H04Q7/28 |
主分类号 |
H04W84/08 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|