Multiplexing method and transceiver

• US 6,763,010 B1
• Filed: 07/26/1999
• Issued: 07/13/2004
• Est. Priority Date: 10/31/1997
• Status: Expired due to Term

• Current Assignee: Nokia Technologies Oy (Nokia Corporation)
• Original Assignee: Nokia Corporation
• Inventors: Piirainen, Olli, Niemelä, Kari
• Primary Examiner(s): Chin, Vivian
• Assistant Examiner(s): Yun, Eugene
• Application Number:
  US09/331,994
• Time in Patent Office: 1,814 Days
• Field of Search: 370/321, 370/326, 370/336, 370/337, 370/347, 370/345
• US Class Current: 370/337
• CPC Class Codes: H04B 7/2643 using time-division multiple access [TDMA] H04B7/2615, H04B7/2618 take precedence
• CPC Class Codes: H04L 5/12 the signals being represented by different phase modulations of a single carrier
• CPC Class Codes: H04L 5/22 using time-division multiplexing

Abstract

The invention relates to a multiplexing method and a transceiver used in a TDMA radio system. The transceiver sets up a connection to another transceiver by transmitting modulated signals in time slots. The transceiver comprises coding means for channel-coding a signal that consists of bits and that is formed into a communication signal, and interleaving means for interleaving the bits of the channel-coded Signal into blocks of a predetermined size. The transceiver also comprises multiplexing means that receive blocks from the interleaving means and that multiplex the interleaved blocks of at least two channel-coded signals together. The transceiver further comprises modulation means for modulating the blocks multiplexed by the multiplexing means with at least four-level modulation before the modulated signal blocks are transmitted as a communication signal in a time slot, so that the transmission speed of the communication signal and the number of the connections to be established can be increased.

Claims

1. A multiplexing method used in a TDMA radio system, in which method connections are set up by means of signals that are transmitted in time slots and that are modulated before the transmission, and wherein a signal consisting of bits is received and channel-coded into channel-coded signals each of which is interleaved into blocks of a predetermined size, the method comprising:

multiplexing at least two blocks together;

modulating said at least two blocks into the same time slot with a modulation method that is adapted to the number of the blocks to be modulated; and

transmitting the modulated blocks as a communication signal in the time slot, so that the transmission speed of the communication signal and the number of the connections to be established can be increased;

wherein when the blocks to be multiplexed are formed at different times, the blocks of two different channel-coded signals are multiplexed preferably such that the block formed first in the first signal and the block formed third in the second signal are modulated for transmission in the same time slot.

2. A multiplexing method used in a TDMA radio system, in which method connections are set up by means of signals that are transmitted in time slots and that are modulated before the transmission, and wherein a signal consisting of bits is received and channel-coded into channel-coded signals each of which is interleaved into blocks of a predetermined size, the method comprising:

multiplexing at least two blocks together;

modulating said at least two blocks into the same time slot with a modulation method that is adapted to the number of the blocks to be modulated; and

transmitting the modulated blocks as a communication signal in the time slot, so that the transmission speed of the communication signal and the number of the connections to be established can be increased;

wherein blocks formed of two different channel-coded signals are multiplexed such that the beginning of the multiplexing of blocks of one signal is postponed by half of the duration of the channel-coded signal.

3. A multiplexing method used in a TDMA radio system, in which method connections are set up by means of signals that are transmitted in time slots and that are modulated before the transmission, and wherein a signal consisting of bits is received and channel-coded into channel-coded signals each of which is interleaved into blocks of a predetermined size, the method comprising:

multiplexing at least two blocks together;

modulating said at least two blocks into the same time slot with a modulation method that is adapted to the number of the blocks to be modulated; and

transmitting the modulated blocks as a communication signal in the time slot, so that the transmission speed of the communication signal and the number of the connections to be established can be increased;

wherein blocks formed of two different channel-coded signals are multiplexed such that the beginning of the multiplexing of blocks of one signal is postponed by two blocks.

4. A multiplexing method used in a TDMA radio system, in which method connections are set up by means of signals that are transmitted in time slots and that are modulated before the transmission, and wherein a signal consisting of bits is received and channel-coded into channel-coded signals each of which is interleaved into blocks of a predetermined size, the method comprising:

multiplexing at least two blocks together;

modulating said at least two blocks into the same time slot with a modulation method that is adapted to the number of the blocks to be modulated; and

transmitting the modulated blocks as a communication signal in the time slot, so that the transmission speed of the communication signal and the number of the connections to be established can be increased;

wherein a multilevel modulation method is used if more than two blocks are modulated into the same time slot.

5. A multiplexing method used in a TDMA radio system, in which method connections are set up by means of signals that are transmitted in time slots and that are modulated before the transmission, and wherein a signal consisting of bits is received and channel-coded into channel-coded signals each of which is interleaved into blocks of a predetermined size, the method comprising:

multiplexing at least two blocks together;

modulating said at least two blocks into the same time slot with a modulation method that is adapted to the number of the blocks to be modulated; and

transmitting the modulated blocks as a communication signal in the time slot, so that the transmission speed of the communication signal and the number of the connections to be established can be increased;

wherein a four-level modulation method is used if two blocks are modulated into the same time slot.

6. A transceiver that is used in a TDMA radio system and sets up a connection to another transceiver by transmitting modulated signals in time slots and that receives a signal consisting of bits, and that comprises coding means for channel-coding the received signal into channel-coded signals, interleaving means for interleaving each channel-coded signal into blocks of a predetermined size, the transceiver comprising:

multiplexing means that receive blocks from the interleaving means and that multiplex at least two blocks together in the same timeslot; and

modulation means that modulate said at least two blocks based on the number of the blocks to be modulated, whereafter the modulated blocks are transmitted as a communication signal in the time slot, so that the transmission speed of the communication signal and the number of the connections to be established can be increased;

wherein blocks interleaved by the interleaving means are formed at different times, and the multiplexing means multiplexes the blocks of two different channel-coded signals such that the block formed first in the first channel-coded signal and the block formed third in the second channel-coded signal are multiplexed into the same time slot.

7. A transceiver that is used in a TDMA radio system and sets up a connection to another transceiver by transmitting modulated signals in time slots and that receives a signal consisting of bits, and that comprises coding means for channel-coding the received signal into channel-coded signals, interleaving means for interleaving each channel-coded signal into blocks of a predetermined size, the transceiver comprising:

multiplexing means that receive blocks from the interleaving means and that multiplex at least two blocks together in the same timeslot; and

modulation means that modulate said at least two blocks based on the number of the blocks to be modulated, whereafter the modulated blocks are transmitted as a communication signal in the time slot, so that the transmission speed of the communication signal and the number of the connections to be established can be increased;

wherein the multiplexing means multiplexes the blocks of two different channel-coded signals, the multiplexing means postpones the beginning of the multiplexing of blocks of one channel-coded signal by half of the duration of the channel-coded signal.

8. A transceiver that is used in a TDMA radio system and sets up a connection to another transceiver by transmitting modulated signals in time slots and that receives a signal consisting of bits, and that comprises coding means for channel-coding the received signal into channel-coded signals, interleaving means for interleaving each channel-coded signal into blocks of a predetermined size, the transceiver comprising:

multiplexing means that receive blocks from the interleaving means and that multiplex at least two blocks together in the same timeslot; and

modulation means that modulate said at least two blocks based on the number of the blocks to be modulated, whereafter the modulated blocks are transmitted as a communication signal in the time slots, so that the transmission speed of the communication signal and the number of the connections to be established can be increased;

wherein the multiplexing means multiplexes the blocks of two different channel-coded signals, the multiplexing means postpones the beginning of the multiplexing of blocks of one channel-coded signal by two blocks.

9. A transceiver that is used in a TDMA radio system and sets up a connection to another transceiver by transmitting modulated signals in time slots and that receives a signal consisting of bits, and that comprises coding means for channel-coding the received signal into channel-coded signals, interleaving means for interleaving each channel-coded signal into blocks of a predetermined size, the transceiver comprising:

multiplexing means that receive blocks from the interleaving means and that multiplex at least two blocks together in the same timeslot; and

modulation means that modulate said at least two blocks based on the number of the blocks to be modulated, whereafter the modulated blocks are transmitted as a communication signal in the time slot, so that the transmission speed of the communication signal and the number of the connections to be established can be increased;

wherein the modulation means modulates more than two blocks into the same time slot with a multilevel modulation method.

10. A transceiver that is used in a TDMA radio system and sets up a connection to another transceiver by transmitting modulated signals in time slots and that receives a signal consisting of bits, and that comprises coding means for channel-coding the received signal into channel-coded signals, interleaving means for interleaving each channel-coded signal into blocks of a predetermined size, the transceiver comprising:

multiplexing means that receive blocks from the interleaving means and that multiplex at least two blocks together in the same timeslot; and

modulation means that modulate said at least two blocks based on the number of the blocks to be modulated, whereafter the modulated blocks are transmitted as a communication signal in the time slot, so that the transmission speed of the communication signal and the number of the connections to be established can be increased;

wherein the modulation means modulates two blocks into the same time slot with a four-level modulation method.