DUAL SYSTEM ACCESS WITH DIFFERENT FRAME RATES
Methods, systems, and apparatuses, including computer programs encoded on computer-readable media, are configured for spreading, using a first data spreader, first data into a first data frame using a first spreading factor. A first transmitter transmits the first data frame to a diplexer on a first frequency. A second data spreader spreads second data into a second data frame using a second spreading factor. A second transmitter transmits the second data frame to a diplexer on a second frequency different than the second frequency. A diplexer combines the first data frame and the second data frame. A first receiver receives on the first frequency, a third data frame from the diplexer. A second receiver receives on the second frequency a fourth data frame from the diplexer.
1 . A communication system comprising:
a first access point comprising:
a first data spreader that spreads first data into a first data frame using a first spreading factor to create first spread data;
a first transmitter configured to transmit the first spread data to a diplexer on a first frequency; and
a first receiver configured to receive third spread data from the diplexer;
a second access point comprising:
a second data spreader that spreads second data into a second data frame using a second spreading factor to create second spread data;
a second transmitter configured to transmit the second spread data to the diplexer on a second frequency different than the first frequency;
a second receiver configured to receive fourth spread data from the diplexer; and
the diplexer that combines the first spread data and the second spread data to create combined data, wherein the combined data is provided to antenna.
2 . The communication system of claim 1 , wherein a length of the first data frame is shorter than a length of the second data frame.
3 . The communication system of claim 1 , wherein the first spreading factor is shorter than the second spreading factor.
4 . The communication system of claim 1 , wherein the communication system further comprises the antenna used to transmit the combined data.
5 . The communication system of claim 1 , wherein the second data frame length is 2.3 seconds.
6 . The communication system of claim 5 , wherein the first data frame length is ⅛ of the second data frame length.
7 . The communication system of claim 1 , wherein the diplexer separates the third spread data and the fourth spread data.
8 . The communication system of claim 1 , wherein the third spread data is received while the second spread data is being transmitted.
9 . The communication system of claim 1 , wherein the first spread data and third spread data comprise a data transaction.
10 . The communication system of claim 9 , wherein the data transaction is a parking meter transaction.
11 . A method comprising:
spreading, using a first data spreader, first data into a first data frame using a first spreading factor;
transmitting, using a first transmitter, the first data frame to a diplexer on a first frequency;
spreading, using a second data spreader, second data into a second data frame using a second spreading factor;
transmitting, using a second transmitter, the second data frame to a diplexer on a second frequency different than the second frequency;
combining, using the diplexer, the first data frame and the second data frame;
receiving, using a first receiver on the first frequency, a third data frame from the diplexer;
receiving, using a second receiver on the second frequency, a fourth data frame from the diplexer.
12 . The method of claim 11 , wherein a length of the first data frame is shorter than a length of the second data frame.
13 . The method of claim 11 , wherein the first spreading factor is shorter than the second spreading factor.
14 . The method of claim 11 , wherein a single antenna used to transmit the combined data.
15 . The method of claim 11 , wherein the second data frame length is 2.3 seconds.
16 . The method of claim 15 , wherein the first data frame length is ⅛ of the second data frame length.
17 . The method of claim 11 , further comprising separating, using the diplexer, the third data frame and the fourth data frame.
18 . The method of claim 17 , wherein the third data frame is received while the second data frame is being transmitted.
19 . The method of claim 11 , wherein the first spread data and third spread data comprise a data transaction.
20 . The method of claim 19 , wherein the data transaction is a parking meter transaction.