Packet switch to provide code division, multiple access cellular service
First Claim
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1. In a wireless telecommunications network, a system for providing connectionless access for wireless communication between cell sites and the PSTN, said wireless communication using packets in a first format, said network comprising:
- a plurality of cell site termination means connected to each of said cell sites for creating and reading packets used in said wireless communication, each of said cell site termination means including means for prepending a destination address on said created packets;
a plurality of PSTN termination means connected to said PSTN, each of said PSTN termination means having means responsive to said destination address for receiving said created packet and translating said packets from said first format into a form used in said PSTN, said PSTN terminating means also having means responsive to receipt of data in a form used in said PSTN for translating said data into packets in said first format and prepending a destination address on said packets indicative of said cell site termination means;
said network being configured such said all translation into and out of said first format for a given wireless call is performed at one PSTN termination means in said network; and
packet switching means connected between each said cell site termination means and each said PSTN termination means responsive to said prepended destination addresses for transporting said packets between said cell site termination means and said one PSTN termination means to connect said wireless call to said PSTN, so that said one PSTN termination means remains the same for the duration of said call.
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Abstract
A system for relaying CDMA packetized data from a cell site or sites to a destination speech processor. The CDMA packetized data, is received at the cell site and is sent in its packetized form along with a destination address to a packet switch. A packet handler at the packet switch receives the CDMA data packets and forwards them on a packet bus. If the destination speech processor assigned to that call is connected to the packet bus, it recognizes its own address and processes the data packet.
122 Citations
8 Claims
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1. In a wireless telecommunications network, a system for providing connectionless access for wireless communication between cell sites and the PSTN, said wireless communication using packets in a first format, said network comprising:
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a plurality of cell site termination means connected to each of said cell sites for creating and reading packets used in said wireless communication, each of said cell site termination means including means for prepending a destination address on said created packets; a plurality of PSTN termination means connected to said PSTN, each of said PSTN termination means having means responsive to said destination address for receiving said created packet and translating said packets from said first format into a form used in said PSTN, said PSTN terminating means also having means responsive to receipt of data in a form used in said PSTN for translating said data into packets in said first format and prepending a destination address on said packets indicative of said cell site termination means; said network being configured such said all translation into and out of said first format for a given wireless call is performed at one PSTN termination means in said network; and packet switching means connected between each said cell site termination means and each said PSTN termination means responsive to said prepended destination addresses for transporting said packets between said cell site termination means and said one PSTN termination means to connect said wireless call to said PSTN, so that said one PSTN termination means remains the same for the duration of said call. - View Dependent Claims (2)
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3. A method for relaying CDMA packets between a cell in a cellular telephone system and the public switched telephone network, said method comprising the steps of:
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receiving a CDMA packet at a cell site; transmitting said CDMA packet to a packet switch, said packet switch having a packet bus, a packet handler connected to said packet bus, and a speech processing handler connected to said packet bus; said packet handler receiving said CDMA packet at said packet switch and moving said packet onto said packet bus; said speech processor receiving said CDMA packet from said bus, translating said CDMA packet into data usable by said public switched telephone network; and delivering said data to said public switched telephone network.
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4. A method for relaying CDMA packets between the public switched telephone network and a cell site, said method comprising the steps of:
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receiving data from said public switched telephone network at a packet switch, said packet switch having a packet bus, a packet handler connected to said packet bus, and a speech processor connected to said packet bus; said speech processor receiving said data from said public switched telephone network, translating said data into CDMA packets and moving said packet onto said packet bus; said packet handler receiving said CDMA packet from said packet bus; and said packet handler sending said CDMA packet to a cell site.
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5. A method for delivering a packet from a wireless cell site to a PSTN interface said wireless cell site and said PSTN interface both being connected to a packet switch, said method comprising the steps of:
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packetizing data representing the communication of a call at said cell site into a plurality of packets; prepending a destination address of said PSTN interface to each of said packets; sending said packets on said packet switch; and said PSTN interface recognizing its own destination address in said packets on said packet switch and taking said packets from said packet switch, said PSTN interface translating said packetized data representing the communication of said call into a form expected by said PSTN.
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6. In a wireless telecommunication system, said wireless telecommunication system comprising a plurality of cells, a method for achieving a soft handoff when a mobile station moves from one cell into another, said method comprising the steps of:
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packetizing data representing the communication of a call at a first one of said plurality of cells, and prepending a destination address of a PSTN interface to each of said packets from said first cell;
p1 packetizing data representing the communication of a call at a second one of said plurality of cells, and prepending said destination address of said PSTN interface to each of said packets from said second cell, wherein said packets from said second cell and said packets from said first cell comprise identical data;sending said packets from said first and second cells on a packet switch; said PSTN interface recognizing its own address in said packets from said first and second cells and removing said packets from said packet switch; said PSTN interface choosing one of said packets from said first and said second cell; and said PSTN interface translating said chosen packet into a form switchable by said switching network. - View Dependent Claims (7, 8)
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Specification