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11. 发明专利

AU4570800A Method for forming acknowledgement data in a wireless communication system, and a wireless communication system 未知
公开(公告)号：AU4570800A
公开(公告)日：2000-12-05
申请号：AU4570800
申请日：2000-05-10
申请人： NOKIA CORP
发明人： LAPPETELAINEN ANTTI , SMOLANDER VISA TAPIO
IPC分类号： H04L1/00 , H04L1/16 , H04L12/28 , H04L12/56 , H04L29/06 , H04L29/08 , H04W28/04 , H04W76/02 , H04L1/18 , H04Q7/38
摘要： The invention relates to a method in a wireless communication system (1) comprising wireless terminals (MT1-MT4), a communication channel (CH) and at, least one access point (AP1, AP2) and access point controller (AC1, AC2). The method comprises the steps of activating at least one data transmission connection between the wireless terminal (MT1-MT4) and the access point (AP1), in which information is transmitted in packets, forming data frames (FR) for the transmission of the packets, supplementing said data frame (FR) with at least one item of error checking data, in whose formation at least a part of the information contained in the data frame (FR) is used, converting said data frames (FR) into signals to be transmitted on the communication channel, receiving signals transmitted on the communication channel and converting them into data frames, forming reference.data corresponding to at least one item of error checking data on the basis of the information received in the data frame (FR), comparing the received error checking data with said reference data, and setting up an acknowledgement message, in which information on the received parts of the data frame (FR) is transmitted from the device (MT1-MT4) receiving the data frames to the device (AP1, AP2).

12. 发明专利

FI990811A0 未知
公开(公告)号：FI990811A0
公开(公告)日：1999-04-13
申请号：FI990811
申请日：1999-04-13
申请人： NOKIA CORP
发明人： LAPPETELAEINEN ANTTI , VAEISAENEN ARI , SMOLANDER VISA TAPIO
IPC分类号： H04L12/28 , H04L12/56 , H04W72/04 , H04W74/00 , H04L
摘要： The invention relates to a method in a wireless data transmission system (1) which comprises wireless terminals (MT1-MT4), at least a first access point (AP1) and a first access point controller (AC1), a second access point (AP2) and a second access point controller (AC2). In the data transmission, data frames are used. In the invention, two allocation strategies are defined of which two are selected at a time. From the data frames, a first starting point (TS11, TS21) and a second starting point (TS1n, TS2n) are determined. In order to select a strategy, it is examined whether there is other traffic on the channel. If other traffic can be detected, it is examined which allocation strategy is selected, and an allocation strategy which is different from that of the examined connection is selected for the connection to be set up. However, if traffic is not detected, it is possible to select the allocation strategy freely. In the first allocation strategy, the allocation of the time slots of the data field (D1, D2) is started from the first starting point (TS11, TS21) of the data field, and in the second allocation strategy, the allocation of the time slots of the data field is started from the second starting point (TS1n, TS2n) of the data field.

13. 发明专利

DE60037412D1 未知
公开(公告)号：DE60037412D1
公开(公告)日：2008-01-24
申请号：DE60037412
申请日：2000-05-10
申请人： NOKIA CORP
发明人： LAPPETELAEINEN ANTTI , SMOLANDER VISA TAPIO
IPC分类号： H04L1/18 , H04L1/00 , H04L1/16 , H04L12/28 , H04L12/56 , H04L29/06 , H04L29/08 , H04W28/04 , H04W76/02
摘要： The invention relates to a method in a wireless communication system (1) comprising wireless terminals (MT1-MT4), a communication channel (CH) and at, least one access point (AP1, AP2) and access point controller (AC1, AC2). The method comprises the steps of activating at least one data transmission connection between the wireless terminal (MT1-MT4) and the access point (AP1), in which information is transmitted in packets, forming data frames (FR) for the transmission of the packets, supplementing said data frame (FR) with at least one item of error checking data, in whose formation at least a part of the information contained in the data frame (FR) is used, converting said data frames (FR) into signals to be transmitted on the communication channel, receiving signals transmitted on the communication channel and converting them into data frames, forming reference.data corresponding to at least one item of error checking data on the basis of the information received in the data frame (FR), comparing the received error checking data with said reference data, and setting up an acknowledgement message, in which information on the received parts of the data frame (FR) is transmitted from the device (MT1-MT4) receiving the data frames to the device (AP1, AP2).

14. 发明专利

ES2263921T3 COMUNICACION INALAMBRICA DE CORTO ALCANCE. 未知
公开(公告)号：ES2263921T3
公开(公告)日：2006-12-16
申请号：ES03254867
申请日：2003-08-05
申请人： NOKIA CORP
发明人： REUNAMAKI JUKKA , SALOKANNEL JUHA , LAPPETELAINEN ANTTI , SMOLANDER VISA TAPIO
IPC分类号： H04L1/16 , H04L12/28 , H04L12/413 , H04L12/56
摘要： Método de funcionamiento de un dispositivo (120) en un sistema de comunicación inalámbrico, comprendiendo el método: la medición de un nivel de energía en un canal; la comparación (515, 540) de un valor medido del nivel de energía con un valor umbral de transmisión predefinido para determinar si se transmite un mensaje de anuncio periódico (200) por el canal; la transmisión (545, 520) del mensaje de anuncio periódico (200) por el canal si el valor medido del nivel de energía es inferior al valor umbral de transmisión predefinido; caracterizado: por que el sistema de comunicación inalámbrico es un sistema de comunicación inalámbrico de corto alcance; por que dicho canal es un canal de inicialización (350, 360); por que la etapa de medición (515) tiene lugar al comienzo del intervalo de transmisión periódico; por la recepción (560) de una respuesta (555) al mensaje de anuncio periódico (200) por el canal de inicialización (350), identificando la respuesta (555) un canal unidifusión para la recepción de datos; y por la transmisión (570) de los datos requeridos (575) a través del canal unidifusión identificado.

15. 发明专利

DE60305108D1 未知
公开(公告)号：DE60305108D1
公开(公告)日：2006-06-14
申请号：DE60305108
申请日：2003-08-05
申请人： NOKIA CORP
发明人： REUNAMAEKI JUKKA , SALOKANNEL JUHA , LAPPETELAEINEN ANTTI , SMOLANDER VISA TAPIO
IPC分类号： H04L12/28 , H04L1/16 , H04L12/413 , H04L12/56
摘要： Systems and methods for a communication system implementing a short range communication link between devices advertising available information and services, and user devices which may initiate a request for further information or services. The communication system provides a low power solution utilizing an optimized combination of a carrier sensing and frequency division multiple access to avoid collisions. The optimization involves the use of a random mean zero value offset appended to the advertising devices' transmission frames. The offset increases the likelihood that a first advertising device will recognize the transmissions of another advertiser's transmissions (i.e., determining that a channel is busy) and avoid unnecessary transmissions that will result in collisions. Upon recognition, the first advertiser may shift its transmission frame accordingly, thereby avoiding transmission collisions between advertisers. The communication system may be implemented in either a StandAlone LowRate system, or in a device with a pre-existing operational Bluetooth implementation.

16. 发明专利

AU1527401A A method for transmitting measurement data in a wireless communication system and a wireless communication system 未知
公开(公告)号：AU1527401A
公开(公告)日：2001-05-30
申请号：AU1527401
申请日：2000-11-15
申请人： NOKIA CORP
发明人： LAPPETELAINEN ANTTI , SMOLANDER VISA TAPIO , SALOKANNEL JUHA
IPC分类号： H04B17/00 , H04B7/08 , H04B7/26 , H04L12/28

17. 发明专利

AU3967800A Method in a wireless data transmission system and a wireless data transmission system 未知
公开(公告)号：AU3967800A
公开(公告)日：2000-11-14
申请号：AU3967800
申请日：2000-04-12
申请人： NOKIA CORP
发明人： LAPPETELAINEN ANTTI , VAISANEN ARI , SMOLANDER VISA TAPIO
IPC分类号： H04L12/28 , H04L12/56 , H04W72/04 , H04W74/00 , H04Q7/38 , H04B7/26
摘要： The invention relates to a method in a wireless data transmission system (1) which comprises wireless terminals (MT1-MT4), at least a first access point (AP1) and a first access point controller (AC1), a second access point (AP2) and a second access point controller (AC2). In the data transmission, data frames are used. In the invention, two allocation strategies are defined of which two are selected at a time. From the data frames, a first starting point (TS11, TS21) and a second starting point (TS1n, TS2n) are determined. In order to select a strategy, it is examined whether there is other traffic on the channel. If other traffic can be detected, it is examined which allocation strategy is selected, and an allocation strategy which is different from that of the examined connection is selected for the connection to be set up. However, if traffic is not detected, it is possible to select the allocation strategy freely. In the first allocation strategy, the allocation of the time slots of the data field (D1, D2) is started from the first starting point (TS11, TS21) of the data field, and in the second allocation strategy, the allocation of the time slots of the data field is started from the second starting point (TS1n, TS2n) of the data field.

18. 发明专利

FI991102A 未知
公开(公告)号：FI991102A
公开(公告)日：2000-11-13
申请号：FI991102
申请日：1999-05-12
申请人： NOKIA CORP
发明人： LAPPETELAEINEN ANTTI , SMOLANDER VISA TAPIO
IPC分类号： H04W28/04 , H04W24/08 , H04Q7/00 , H04Q7/38

19. 发明专利

FI990811A 未知
公开(公告)号：FI990811A
公开(公告)日：2000-10-14
申请号：FI990811
申请日：1999-04-13
申请人： NOKIA CORP
发明人： LAPPETELAEINEN ANTTI , VAEISAENEN ARI , SMOLANDER VISA TAPIO
IPC分类号： H04L12/28 , H04L12/56 , H04W72/04 , H04W74/00 , H04L
摘要： The invention relates to a method in a wireless data transmission system (1) which comprises wireless terminals (MT1-MT4), at least a first access point (AP1) and a first access point controller (AC1), a second access point (AP2) and a second access point controller (AC2). In the data transmission, data frames are used. In the invention, two allocation strategies are defined of which two are selected at a time. From the data frames, a first starting point (TS11, TS21) and a second starting point (TS1n, TS2n) are determined. In order to select a strategy, it is examined whether there is other traffic on the channel. If other traffic can be detected, it is examined which allocation strategy is selected, and an allocation strategy which is different from that of the examined connection is selected for the connection to be set up. However, if traffic is not detected, it is possible to select the allocation strategy freely. In the first allocation strategy, the allocation of the time slots of the data field (D1, D2) is started from the first starting point (TS11, TS21) of the data field, and in the second allocation strategy, the allocation of the time slots of the data field is started from the second starting point (TS1n, TS2n) of the data field.

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