GB1326696A - Transmitter-receiver for a radio telephone network linked to a wired telephone network - Google Patents

Transmitter-receiver for a radio telephone network linked to a wired telephone network

Info

Publication number
GB1326696A
GB1326696A GB1804071A GB1804071A GB1326696A GB 1326696 A GB1326696 A GB 1326696A GB 1804071 A GB1804071 A GB 1804071A GB 1804071 A GB1804071 A GB 1804071A GB 1326696 A GB1326696 A GB 1326696A
Authority
GB
United Kingdom
Prior art keywords
codes
concentrator
channel
receiver
telephone network
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB1804071A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alcatel CIT SA
Original Assignee
Alcatel CIT SA
Compagnie Industrielle de Telecommunication CIT Alcatel SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Alcatel CIT SA, Compagnie Industrielle de Telecommunication CIT Alcatel SA filed Critical Alcatel CIT SA
Publication of GB1326696A publication Critical patent/GB1326696A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

1326696 Automatic exchange equipment; radio signalling COMPAGNIE INDUSTRIELLE DES TELECOMMUNICATIONS CIT-ALCATEL 28 May 1971 [28 May 1970] 18040/71 Headings H4K and H4L A radio-telephone system includes fixed transmitting stations (concentrators) connected to a telephone system, which stations radiate a general call code signal to indicate a free channel in a plurality of channels. Such a system is described in Specification 1,297,071. The transmitter/receiver of a mobile subscriber includes comparison circuitry which compares successively received general call codes from each concentrator channel in turn until a coincidence is obtained when that concentrator channel is adapted for the call. In the system described, the first received call code is stored, suitably in a shift register 17, compared at 17<SP>1</SP> with the subsequently received second and third call codes stored at 21 to provide signals to a counter 23 whenever the stored codes are found to be identical. In the case described if the three codes are the same that concentrator channel is seized for the connection. If they are not identical the receiver is advanced to the next free channel radiating the general call code by pulse J and a further test made. If no coincidence is found after q successive explorations of the N channels the particular concentrator is abandoned. This number of explorations precludes abandonment when transient fading or masking occurs.
GB1804071A 1970-05-28 1971-05-28 Transmitter-receiver for a radio telephone network linked to a wired telephone network Expired GB1326696A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7019604A FR2087710A5 (en) 1970-05-28 1970-05-28

Publications (1)

Publication Number Publication Date
GB1326696A true GB1326696A (en) 1973-08-15

Family

ID=9056307

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1804071A Expired GB1326696A (en) 1970-05-28 1971-05-28 Transmitter-receiver for a radio telephone network linked to a wired telephone network

Country Status (8)

Country Link
BE (1) BE767187A (en)
CA (1) CA943275A (en)
DE (1) DE2126718C2 (en)
FR (1) FR2087710A5 (en)
GB (1) GB1326696A (en)
NL (1) NL175370C (en)
SE (1) SE367904B (en)
ZA (1) ZA713375B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2277849A (en) * 1993-05-06 1994-11-09 Spectronics Micro Syst Ltd Radio communication network
US6252859B1 (en) 1997-06-16 2001-06-26 Racal Communications Systems Limited Radio communications system
US8737351B2 (en) 2004-03-03 2014-05-27 The Trustees Of Columbia University In The City Of New York Methods and systems for reducing MAC layer handoff latency in wireless networks

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1416154A1 (en) * 1958-10-24 1969-06-04 Gen Precision Inc Electrical signaling system
BE625528A (en) * 1961-12-01
US3289083A (en) * 1963-05-28 1966-11-29 Ibm Frequency shift keyed data transmission system
GB1082734A (en) * 1964-04-30 1967-09-13 Int Standard Electric Corp Land-to-mobile telephone link
BE665912A (en) * 1964-06-26
DE1487986A1 (en) * 1966-07-21 1969-02-20 Standard Elek K Lorenz Ag Multi-frequency code signaling method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2277849A (en) * 1993-05-06 1994-11-09 Spectronics Micro Syst Ltd Radio communication network
GB2277849B (en) * 1993-05-06 1997-09-10 Spectronics Micro Syst Ltd Radio communication system
US6252859B1 (en) 1997-06-16 2001-06-26 Racal Communications Systems Limited Radio communications system
US8737351B2 (en) 2004-03-03 2014-05-27 The Trustees Of Columbia University In The City Of New York Methods and systems for reducing MAC layer handoff latency in wireless networks

Also Published As

Publication number Publication date
NL175370C (en) 1984-10-16
DE2126718A1 (en) 1971-12-02
NL7106964A (en) 1971-11-30
ZA713375B (en) 1972-01-26
CA943275A (en) 1974-03-05
FR2087710A5 (en) 1971-12-31
DE2126718C2 (en) 1985-04-25
NL175370B (en) 1984-05-16
BE767187A (en) 1971-11-16
SE367904B (en) 1974-06-10

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee