Mobile TDMA/GSM system which uses a plurality of bits for the steal symbols/flags

• US 6,452,914 B2
• Filed: 06/11/2001
• Issued: 09/17/2002
• Est. Priority Date: 12/22/1998
• Status: Expired due to Fees

• Current Assignee: Nokia Networks (Nokia Corporation)
• Original Assignee: Nokia Networks (Nokia Corporation)
• Inventors: Niemelä, Kari
• Primary Examiner(s): VINCENT, DAVID ROBERT
• Application Number:
  US09/877,237
• Publication Number:
  US 20020009101A1
• Time in Patent Office: 463 Days
• Field of Search: 370/310, 370/321, 370/329, 370/330, 370/336-7, 370/345, 370/347, 370/350, 370/311, 370/474, 370/476, 370/478, 370/498, 370/503, 370/509, 370/514, 370/522, 370/523
• US Class Current: 370/337
• CPC Class Codes: H04W 16/06 Hybrid resource partitioning, e.g. channel borrowing
• CPC Class Codes: H04W 28/06 Optimizing the usage of the radio link, e.g. header compression, information sizing , discarding information system modifying transmission characteristic according to link quality by modifying frame length H04L1/0007; dynamic adaptation of the packet size for flow control or congestion control H04L47/365

Abstract

A signalling method in a wireless digital telecommunication system, where the signals between a base station and a terminal comprise bursts generated from symbols. The symbols comprise at least one stealing symbol indicating, if necessary, the use of a traffic channel for signalling. The symbols are generated from several bits by modulating and the stealing symbol is used for transmitting various signalling messages. A signalling message to be transferred is coded into a code word which is placed into one or more stealing symbols. The code word may be interleaved into the stealing symbols of several bursts. The method can be used, for example, for controlling the transmission power of the mobile station and the base station.

Claims

1. A signalling method in a wireless digital telecommunication system between a base station and a terminal, the method comprising steps:

generating the signals between the base station and the terminal from bursts comprising symbols, each of the symbols being generated from several bits by modulating;

indicating, if necessary, the use of a traffic channel for signalling by at least one stealing symbol comprised by the symbols; and

using said stealing symbol for transmitting different signalling messages.

2. A method as claimed in claim 1, wherein an 8-PSK-modulation is used for generating the symbols.

3. A method as claimed in claim 1, further comprising

forming a code word corresponding to the signalling message to be transferred using the stealing symbols; and

placing said code word into one or more stealing symbols.

4. A method as claimed in claim 3, wherein said code word is interleaved into the stealing symbols of several bursts.

5. A method as claimed in claim 4, further comprising

forming 24-bit code words from the signalling messages;

and

interleaving each of said code words into stealing symbols of four bursts.

6. A method as claimed in claim 1, wherein the method is used together with a separate signalling channel.

7. A method as claimed in claim 1, wherein the method is used for adjusting the transmission power of the mobile station and the base station.

8. A wireless digital telecommunication system for signalling between a base station and a terminal, in which system the signals to be transmitted on a radio connection between the base station and the terminal comprise bursts generated from symbols, each of the symbols are generated from several bits by modulating, which symbols comprise at least one stealing symbol, which indicate, if necessary, the use of a traffic channel for signalling, the system comprising

at least one transmitter, which comprises means that include a signalling message to be transmitted, means for coding different signalling messages, means for connecting the coded signalling message with the stealing symbols of the signal to be transmitted and means for modulating the signal so that each symbol comprises several bits, and that

at least one receiver, which comprises means for identifying the signalling message, means for demodulating the received signal comprising symbols, means for generating the coded signalling message from the stealing symbols in the received signal and means for decoding the coded signalling message.

9. A telecommunication system as claimed in claim 8, wherein the symbols are configured to be generated using an 8-PSK-modulation.

10. A telecommunication system as claimed in claim 9, wherein

the signalling message comprises a 24-bit code word, and that

the code word is configured to be interleaved into the stealing symbols of four bursts.

11. A telecommunication system as claimed in any one of claims 8 to 10, wherein the signalling messages comprise messages controlling the transmission power of the mobile station and the base station.