Discontinuous Transmission CDMA System

Abstract

A method of transmitting in a second mode at least one data frame from a first node to a second node. Determining if there is data to be transmitted and if there is no data to be transmitted then transmitting from said first node to said second node no frame in the second mode. The first node receiving an indication that the first node should use a first mode and transmitting an acknowledgement in response to the indication. Switching from the second mode to the first mode and transmitting in the first mode at least one data frame from the first node to the second node. Then, further determining if there is data to be transmitted and if there is no data to be transmitted then transmitting from said first node to said second node at least one empty frame in the first mode.

1 . (canceled) 
     
     
         2 . A method comprising:
 transmitting in a first mode at least one data frame from a first node to a second node;   determining if there is data to be transmitted , wherein if there is no data to be transmitted, transmitting from said first node to said second node at least one empty frame in the first mode;   receiving, at the first node, an indication that the first node should use a second mode;   transmitting, from the first node, an acknowledgement in response to the indication;   switching, at the first node, from the first mode to the second mode in response to the receiving of the indication;   transmitting, in the second mode, at least one data frame from the first node to the second node; and   determining if there is data to be transmitted , wherein if there is no data to be transmitted, transmitting from said first node to said second node no frame in the second mode.   
     
     
         3 . The method of according to  claim 2  wherein the indication is different for the first mode and the second mode. 
     
     
         4 . The method according to  claim 2 , wherein the first node switches to the second mode from the first mode after the acknowledgement has been sent. 
     
     
         5 . A method comprising:
 transmitting in a second mode at least one data frame from a first node to a second node;   determining if there is data to be transmitted , wherein if there is no data to be transmitted, transmitting from said first node to said second node no frame in the second mode;   receiving, at the first node, an indication that the first node should use a first mode;   transmitting, from the first node, an acknowledgement in response to the indication;   switching, at the first node, from the second mode to the first mode in response to the receiving of the indication;   transmitting in the first mode at least one data frame from the first node to the second node; and   determining if there is data to be transmitted , wherein if there is no data to be transmitted, transmitting from said first node to said second node at least one empty frame in the first mode.   
     
     
         6 . The method according to  claim 5 , wherein the indication is different for the first mode and the second mode. 
     
     
         7 . The method according to  claim 5 , wherein the first node switches to the first mode from the second mode after the acknowledgement has been sent. 
     
     
         8 . An apparatus comprising:
 a memory to store data;   a processor coupled to the memory, the processor configured to:
 transmit in a first mode at least one data frame from a first node to a second node; 
 determine if there is data to be transmitted , wherein if there is no data to be transmitted, transmitting from said first node to said second node at least one empty frame in the first mode; 
 receive, at the first node, an indication that the first node should use a second mode; 
 transmit, from the first node, an acknowledgement in responsive to the indication; 
 switch, at the first node, from the first mode to the second mode; 
 transmit in the second mode at least one data frame from a first node to a second node; and 
 determine if there is no data to be transmitted , wherein if there is no data to be transmitted, transmitting from said first node to said second node no frame in the second mode. 
   
     
     
         9 . The apparatus of according  claim 8  wherein the indication is different for the first mode and the second mode. 
     
     
         10 . The apparatus according to  claim 8 , wherein the first node switches to the second mode from the first mode after the acknowledgement has been sent. 
     
     
         11 . The apparatus according to  claim 8  wherein the indication indicates the mode is not to be changed. 
     
     
         12 . The apparatus according to  claim 11  where the first node continues to operate in the first mode. 
     
     
         13 . The apparatus according to  claim 8  wherein the processor is further configured to:
 receive a second indication, wherein the second indication indicates switching from the second mode to the first mode; 
 determine data is available to be sent; and 
 transmit the data from the first node to the second node. 
 
     
     
         14 . An apparatus comprising:
 a memory for storing data;   a processor coupled to the memory, wherein the processor is configured to:   transmit in a second mode at least one data frame from a first node to a second node;   determine if there is data to be transmitted , wherein if there is no data to be transmitted, transmitting from said first node to said second node no frame in the second mode;   receive, at the first node, an indication that the first node should use a first mode;   transmit, from the first node, an acknowledgement in response to the indication;   switch, at the first node, from the second mode to the first mode in response to the receiving of the indication;   transmit in the first mode at least one data frame from the first node to the second node; and   determine if there is data to be transmitted , wherein if there is no data to be transmitted, transmitting from said first node to said second node at least one empty frame in the first mode.   
     
     
         15 . The apparatus of according  claim 14  wherein the indication is different for the first mode and the second mode. 
     
     
         16 . The apparatus according to  claim 14 , wherein the first node switches to the first mode from the second mode after the acknowledgement has been sent. 
     
     
         17 . The apparatus according to  claim 14  wherein the indication indicates the mode is not to be changed. 
     
     
         18 . The apparatus according to  claim 17  where the first node continues to operate in the second mode. 
     
     
         19 . The apparatus according to  claim 14  wherein the processor is further configured to:
 receive a second indication, wherein the second indication indicates switching from the second mode to the first mode; 
 determine data is available to be sent; and 
 transmit the data from the first node to the second node.