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1.发明申请METHOD AND APPARATUS FOR CONNECTING DEVICES VIA AN AD HOC WIRELESS COMMUNICATION NETWORK 审中-公开用于通过无线通信网络连接设备的方法和装置
公开(公告)号：WO02054790A3
公开(公告)日：2003-01-09
申请号：PCT/EP0112964
申请日：2001-11-09
Applicant: IBM , IBM DEUTSCHLAND
Inventor： SALONIDIS THEODOROS , BHAGWAT PRAVIN , LAMAIRE RICHARD O
Abstract: A method for connecting two or more devices via a wireless communication channel is provided. In one embodiment, a method of connecting a first device to a second deviceincludes the steps of arbitrarily assigning one of twopossible states to each device, wherein in a first state, a device seeks to establish a connection with another device, and in a second state, the device renders itself available for connection with the other device; and alternating a present state of each device between the first state and the second state in accordance with a predefined probability distribution until either a predetermined timeout period has expired or a connection between the devices has been established, the length of time that each device remains in the first and second states being controlled by the probabilitydistribution. In a second embodiment, a method of forming a scatternet between a plurality of devices or nodes in an ad hoc wireless communication network is provided.
Abstract translation: 提供了一种通过无线通信信道连接两个或多个设备的方法。 在一个实施例中，将第一设备连接到第二设备的方法包括将任意两个可能状态中的一个任意地分配给每个设备的步骤，其中在第一状态下，设备尝试建立与另一设备的连接，并且处于第二状态 ，该设备自身可用于与另一设备连接; 并且根据预先确定的概率分布，在第一状态和第二状态之间交替每个设备的当前状态，直到预定的超时时间段已经过期或已经建立了设备之间的连接，每个设备保持的时间长度 第一和第二状态由概率分布控制。 在第二实施例中，提供了在自组织无线通信网络中的多个设备或节点之间形成分散网络的方法。
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公开(公告)号：CA2153443C
公开(公告)日：2001-12-11
申请号：CA2153443
申请日：1995-07-07
Applicant: IBM
Inventor： FLEEK ARTHUR E , LAMAIRE RICHARD O
Abstract: A method for use in a single cell of a wireless communication system of the type having a leader station that coordinates communication among a plurality of remote st ations that are in the cell. The method applies to systems that use slow frequency-hopping r adios and a Carrier Sense Multiple Access (CSMA) type protocol. In this context, the met hod allows a remote station to initially acquire the frequency-hopping pattern and time b ase of the leader station and to maintain frequency synchronization in the face of control inf ormation loss due to radio transmission effects (e.g., interference, noise or multipath fading ). In the acquisition phase, the remote station actively generates probe messages that are sent to the leader station so as to rapidly achieve frequency synchronization with the leader station.
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公开(公告)号：PL179099B1
公开(公告)日：2000-07-31
申请号：PL31667095
申请日：1995-09-08
Applicant: IBM
Inventor： FLEEK ARTHUR E , LAMAIRE RICHARD O
Abstract: A method for use in a single cell of a wireless communication system of the type having a leader station that coordinates communication among a plurality of remote stations that are in the cell. The method applies to systems that use slow frequency-hopping radios and a Carrier Sense Multiple Access (CSMA) type protocol. In this context, the method allows a remote station to initially acquire the frequency-hopping pattern and time base of the leader station and to maintain frequency synchronization in the face of control information loss due to radio transmission effects (e.g., interference, noise or multipath fading). In the acquisition phase, the remote station actively generates probe messages that are sent to the leader station so as to rapidly achieve frequency synchronization with the leader station.
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公开(公告)号：AT276614T
公开(公告)日：2004-10-15
申请号：AT01989447
申请日：2001-11-09
Applicant: IBM
Inventor： SALONIDIS THEODOROS , BHAGWAT PRAVIN , LAMAIRE RICHARD O
Abstract: A method for connecting two or more devices via a wireless communication channel is provided. In one embodiment, a method of connecting a first device to a second device includes the steps of arbitrarily assigning one of two possible states to each device, wherein in a first state, a device seeks to establish a connection with another device, and in a second state, the device renders itself available for connection with the other device; and alternating a present state of each device between the first state and the second state in accordance with a predefined probability distribution until either a predetermined timeout period has expired or a connection between the devices has been established, the length of time that each device remains in the first and second states being controlled by the probability distribution. In a second embodiment, a method of forming a scatternet between a plurality of devices or nodes in an ad hoc wireless communication network is provided.
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Patent Agency Ranking
公开(公告)号：AU2002227911A1
公开(公告)日：2002-07-16
申请号：AU2002227911
申请日：2001-11-09
Applicant: IBM
Inventor： SALONIDIS THEODOROS , BHAGWAT PRAVIN , LAMAIRE RICHARD O
Abstract: A method for connecting two or more devices via a wireless communication channel is provided. In one embodiment, a method of connecting a first device to a second device includes the steps of arbitrarily assigning one of two possible states to each device, wherein in a first state, a device seeks to establish a connection with another device, and in a second state, the device renders itself available for connection with the other device; and alternating a present state of each device between the first state and the second state in accordance with a predefined probability distribution until either a predetermined timeout period has expired or a connection between the devices has been established, the length of time that each device remains in the first and second states being controlled by the probability distribution. In a second embodiment, a method of forming a scatternet between a plurality of devices or nodes in an ad hoc wireless communication network is provided.
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公开(公告)号：CA2153443A1
公开(公告)日：1996-03-27
申请号：CA2153443
申请日：1995-07-07
Applicant: IBM
Inventor： FLEEK ARTHUR E , LAMAIRE RICHARD O
Abstract: A method for use in a single cell of a wireless communication system of the type having a leader station that coordinates communication among a plurality of remote stations that are in the cell. The method applies to systems that use slow frequency-hopping radios and a Carrier Sense Multiple Access (CSMA) type protocol. In this context, the method allows a remote station to initially acquire the frequency-hopping pattern and time base of the leader station and to maintain frequency synchronization in the face of control information loss due to radio transmission effects (e.g., interference, noise or multipath fading). In the acquisition phase, the remote station actively generates probe messages that are sent to the leader station so as to rapidly achieve frequency synchronization with the leader station.
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公开(公告)号：CA2115211A1
公开(公告)日：1994-10-20
申请号：CA2115211
申请日：1994-02-08
Applicant: IBM
Inventor： AHMADI HAMID , BANTZ DAVID F , BAUCHOT FREDERIC , KRISHNA ARVIND , LAMAIRE RICHARD O , NATARAJAN KADATHUR S
Abstract: A Medium Access (MAC) Protocol is utilized for wireless radio access for a plurality of remote stations to a base station on a LAN. The MAC protocol is based on a reservation scheme for user data traffic and a random access technique for control and signalling traffic. There is a time division fixed frame structure in which time is slotted, and time slots are grouped into fixed frames consisting of data and control subframes or periods. The fixed frame structure consists of three periods (A, B, and C) along with their respective headers. The first period, the A period, is the outbound channel which is used exclusively for data transfer from the base station to the remote stations. The following period, the B period, is the inbound channel that is used for contention-free data transfer from the remote stations to the base station. The allocation of the data slots in the A and B periods is performed by the base station. The last period of the frame, designated as the C period, is the control channel used for the transmission of reservation requests and data from the remote stations to the base station in a random-access contention mode using a slotted Aloha protocol. The duration of the three periods may be varied using a movable boundary technique. The base station estimates the number of actively transmitting remote stations utilizing feedback information from the remote stations. This estimate is broadcast to the remote stations as control indicia to control their transmission attempts in the C period, thus yielding high transmission efficiency.
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公开(公告)号：HK1071253A1
公开(公告)日：2005-07-08
申请号：HK05104196
申请日：2005-05-19
Applicant: IBM
Inventor： SALONIDIS THEODOROS , BHAGWAT PRAVIN , LAMAIRE RICHARD O
IPC: H04L20060101 , H04L12/28 , H04B7/24 , H04L12/56 , H04L29/08
Abstract: A method for connecting two or more devices via a wireless communication channel is provided. In one embodiment, a method of connecting a first device to a second device includes the steps of arbitrarily assigning one of two possible states to each device, wherein in a first state, a device seeks to establish a connection with another device, and in a second state, the device renders itself available for connection with the other device; and alternating a present state of each device between the first state and the second state in accordance with a predefined probability distribution until either a predetermined timeout period has expired or a connection between the devices has been established, the length of time that each device remains in the first and second states being controlled by the probability distribution. In a second embodiment, a method of forming a scatternet between a plurality of devices or nodes in an ad hoc wireless communication network is provided.
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公开(公告)号：CA2115211C
公开(公告)日：1997-09-23
申请号：CA2115211
申请日：1994-02-08
Applicant: IBM
Inventor： BANTZ DAVID F , LAMAIRE RICHARD O , KRISHNA ARVIND , NATARAJAN KADATHUR S , BAUCHOT FREDERIC J , AHMADI HAMID
Abstract: A Medium Access (MAC) Protocol is utilized for wireless radio access for a plurality of remote stations to a base station on a LAN. The MAC protocol is based on a reservation scheme for user data traffic and a random access technique for control and signalling traffic. There is a time division fixed frame structure in which time is slotted, and time slots are grouped into fixed frames consisting of data and control subframes or periods. The fixed frame structure consists of three periods (A, B, and C) along with their respective headers. The first period, the A period, is the outbound channel which is used exclusively for data transfer from the base station to the remote stations. The following period, the B period, is the inbound channel that is used for contention-free data transfer from the remote stations to the base station. The allocation of the data slots in the A and B periods is performed by the base station. The last period of the frame, designated as the C period, is the control channel used for the transmission of reservation requests and data from the remote stations to the base station in a random-access contention mode using a slotted Aloha protocol. The duration of the three periods may be varied using a movable boundary technique. The base station estimates the number of actively transmitting remote stations utilizing feedback information from the remote stations. This estimate is broadcast to the remote stations as control indicia to control their transmission attempts in the C period, thus yielding high transmission efficiency.
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