11.
    发明专利
    未知

    公开(公告)号:DE69937472T2

    公开(公告)日:2008-08-21

    申请号:DE69937472

    申请日:1999-01-12

    Abstract: The present invention is a method and system of half-duplex wireless communication where a premises has a base station that services a defined communication cell. The base station transmits and receives Request to Send and Clear to Send announcements to and from mobile stations to indicate that the base station can send and receive data. A plurality of mobile stations send and receive data after transmitting and receiving Clear to Send and Request to Send announcements to and from the base station based on the respective time period in which the base station has received the Clear to Send and Request to Send announcements from respective mobile stations.

    12.
    发明专利
    未知

    公开(公告)号:DE69928357D1

    公开(公告)日:2005-12-22

    申请号:DE69928357

    申请日:1999-07-26

    Abstract: In a method of effectuating a change in the operation of a portable communication device such as a laptop or palmtop computer, a personal digital assistant (PDA), or a cellular telephone the device can communicate with a remote host or server using one of two or more different communication arrangements. Various signals indicative of the environment in which the device is operating are monitored, to anticipate or predict a change or transition from one communication arrangement to the other. If the change is determined to be both imminent and significant, the operation change is effected substantially simultaneously, by changing parameters in the transport and/or application protocol layer in the device.

    TWO-WAY WIRELESS MESSAGING SYSTEM WITH TRANSACTION SERVER

    公开(公告)号:CA2208887C

    公开(公告)日:2001-03-27

    申请号:CA2208887

    申请日:1997-06-25

    Abstract: A two-way wireless messaging system has a messaging network, and a two-way messaging device that originates, receives and replies to messages h aving dynamic message components to and from the messaging network. A transaction server is located within the messaging network for opening and tracking messages am ong various users of the two-way messaging system, and closing a transaction to prevent further message delivery and replies after a predetermined transaction is completed. A transaction can remain open until a reply has been received by every intended message re cipient; until a desired number of message recipient received a message; or until a specifi ed amount of time has expired.

    TWO-WAY WIRELESS MESSAGING SYSTEM WITH FLEXIBLE MESSAGING

    公开(公告)号:CA2209090A1

    公开(公告)日:1998-02-22

    申请号:CA2209090

    申请日:1997-06-25

    Abstract: A system and method for two-way wireless messaging is disclosed. A plurality of messages are stored within a user agent of the two-way messaging network. The messages correspond to those selected by a subscriber of a two-way messaging service. The messages are encoded and include control information. An originating message transfer code is transmitted from the two-way messaging device of the subscriber to the two-way messaging network. The originating message transfer code includes, among other things a message number and a modifier that specifies customizations that are to be applied to a message. The originating message code is then expanded within the user agent, and the expanded message is forwarded to desired destinations based on the content of the originating message transfer code. In one aspect of the present invention, the message can be encoded with at least one control tag and in another aspect of the invention, the message can be encoded with paired control tags that delimit the beginning and end portions of a message to which control should be applied.

    TWO-WAY WIRELESS MESSAGING SYSTEM WITH FLEXIBLE MESSAGING

    公开(公告)号:CA2209090C

    公开(公告)日:2000-12-19

    申请号:CA2209090

    申请日:1997-06-25

    Abstract: A system and method for two-way wireless messaging is disclosed. A plurality of messages are stored within a user agent of the two-way messaging network. The messages correspond to those selected by a subscriber of a two-way messagingservice. The messages are encoded and include control information. An originating message transfer code is transmitted from the two-way messaging device of the subscriber to the two-way messaging network. The originating message transfer code includes, among other things a message number and a modifier that specifies customizations that are to be applied to a message. The originating message code is then expanded within the user agent, and the expanded message is forwarded to desired destinations based on the content of the originating message transfer code. In one aspect of the present invention, the message can be encoded with at least one control tag and in another aspect of the invention, the message can be encoded with paired control tags that delimit the beginning and end portions of a message to which control should be applied.

    TWO-WAY WIRELESS MESSAGING SYSTEM WITH TRANSACTION SERVER

    公开(公告)号:CA2208887A1

    公开(公告)日:1998-02-12

    申请号:CA2208887

    申请日:1997-06-25

    Abstract: A two-way wireless messaging system has a messaging network, and a two-way messaging device that originates, receives and replies to messages having dynamic message components to and from the messaging network. A transaction server is located within the messaging network for opening and tracking messages among various users of the two-way messaging system, and closing a transaction to prevent further message delivery and replies after a predetermined transaction is completed. A transaction can remain open until a reply has been received by every intended message recipient; until a desired number of message recipient received a message; or until a specified amount of time has expired.

    TWO-WAY WIRELESS MESSAGING SYSTEM HAVING USER AGENT

    公开(公告)号:CA2205878A1

    公开(公告)日:1998-01-24

    申请号:CA2205878

    申请日:1997-05-22

    Abstract: A two-way wireless messaging system includes a messaging network having at least one user agent corresponding to a subscriber of a two-way wireless messaging service. The subscriber receives messages from the messaging network along a first communication channel. The user agent includes a plurality of messages stored therein wherein a predetermined message is stored in the user agent and forwarded to a desired destination in response to an originating message code that is received from a two-way messaging device of the subscriber along a second communication return channel. The originating message code can be expanded by the user agent. The messages stored by the user agent can be modified so that different messages can be forwarded to the predetermined destination. The user agent also maintains location information of the two-way messaging device of the subscriber.

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