EP1741237A1 - Procede de commande d'un processeur bande de base - Google Patents

Procede de commande d'un processeur bande de base

Info

Publication number
EP1741237A1
EP1741237A1 EP05736249A EP05736249A EP1741237A1 EP 1741237 A1 EP1741237 A1 EP 1741237A1 EP 05736249 A EP05736249 A EP 05736249A EP 05736249 A EP05736249 A EP 05736249A EP 1741237 A1 EP1741237 A1 EP 1741237A1
Authority
EP
European Patent Office
Prior art keywords
wlan card
data transmission
baseband processor
interface
implemented
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.)
Withdrawn
Application number
EP05736249A
Other languages
German (de)
English (en)
Inventor
Gunnar Nitsche
Jens Bretschneider
Matthias Hofmann
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.)
NXP BV
Original Assignee
Philips Semiconductors Dresden AG
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 Philips Semiconductors Dresden AG filed Critical Philips Semiconductors Dresden AG
Publication of EP1741237A1 publication Critical patent/EP1741237A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/021—Terminal devices adapted for Wireless Local Loop operation

Definitions

  • the invention relates to a method for controlling a baseband processor, wherein in a wireless network a respective first and second communicant, in whose respective host standardized data transmission rules are implemented, which ensure the regular data transmission between the first and second communicants of this wireless network, wherein data packets , which are transmitted and / or received via the HF (radio frequency) transmitting / receiving part of a WLAN card connected to the host via a WLAN card interface on electromagnetic signal paths, and the one arranged on the WLAN card Baseband processor performs the regular processing of the data packets.
  • HF radio frequency
  • WLAN cards wireless network cards
  • Each station forms a so-called radio cell with its wireless network card. It corresponds to the area covered by radio. In the simplest case, such a configuration is called “basic services facility” (BSS).
  • BSS basic services facility
  • a hub or switch is not absolutely necessary (ad hoc network).
  • W-AN wireless network
  • LAN wired network
  • AP access point
  • DS distribution system
  • An access point with at least one individual station also forms a radio cell. Additional cells increase the range of individual stations and access points.
  • the access point acts like a classic network bridge.
  • the W-LANs which are specified with regard to the rules for wireless networks according to the IEEE 802.11 standard but also according to the HiperLAN / 2 standard, are part of the known 802 definitions for local networks.
  • the WLAN standards as well as the standards for LANs, are specified on the bottom two layers of the seven-layer OSI (Open System Interconnect) model.
  • OSI Open System Interconnect
  • the two standards provide a similar radio interface, which is located in the first layer, the physical layer.
  • the two standards differ fundamentally in the access methods used, which are defined for the second layer above, the MAC (Medium Access Control) layer.
  • the MAC layer takes on typical functions that are otherwise located at higher layers: fragmentation, data packet repetition and the confirmation of the data packets.
  • a favorable way of increasing the efficiency of wireless networks that is emerging in the prior art is the property of being reconfigurable.
  • the radio interfaces involved in the data transmission can also adapt to the required quality of service and transmission situation of the existing networks of the infrastructure.
  • baseband processors now provide the necessary signals for data exchange in the W-LAN units
  • the implementation of such universal W-LAN communicators is mainly due to the problem that the control of a baseband processor is typically achieved through direct access by the hosts with its software on hardware registers of the processor circuit, can only be carried out to a limited extent.
  • the send data are processed into linked lists and the address of the start of the list is stored directly in the baseband processor.
  • the programming of the baseband processor could only be done together with the specific setting of the hardware of the wireless LAN communicators.
  • the TI ThunderLAN PCI Ethernet Controller SPWS018B can serve as an example.
  • the disadvantage of the prior art remains that when implementing WLAN networks with conventional WLAN products, in particular those with routines improve the quality of transmission in data communication according to the standards of IEEE 802.11 but also other W-LAN standards such as HiperLAN / 2, a distributed system is required, which depends on the interaction of the used W-LAN hardware with its Device-supported MAC (Media Access Control) functionalities (layer 2 of the OSI layer model) and the operating system used (stack and driver) of the end devices and partly also depends on the respective access point.
  • Device-supported MAC Media Access Control
  • the inventive task is solved in that the control of the first and / or second communicant by the protocol module implemented in its respective host by means of the hardware driver also implemented in its respective host via the WLAN card interface over the hardware of the connected WLAN Card is made solely according to the conditions and specifications of a data transfer rule agreed between the protocol module and the baseband processor, regardless of the conditions and specifications of the operating system and the WLAN card interface.
  • a functional area with a software interface, which is implemented in accordance with the data transmission rule, and with a hardware interface is created in the WLAN card.
  • the aim of this solution is that the protocol software can be used for different chip versions without any significant change.
  • the hardware drivers can be used for various applications without any significant change. This also ensures that the protocol module is implemented in such a way that it has no operating system specifics.
  • the method can be used independently of the hardware interfaces between the host and the baseband processor.
  • An embodiment of the method provides that the functional area is equipped in such a way that the respective data transmission function is interpreted therein.
  • the communicating interface of the baseband processor is controlled in such a way that an associated BB (baseband) signal is provided by the baseband processor, with which the HF (radio frequency) transmission / reception part of the WLAN card is used Data transmission is guaranteed.
  • a further embodiment is characterized in that when the data transfer function for the WLAN card determined by the respective associated host changes during the operating state of the first and / or second communicant, this new data transmission function of the WLAN card is the same as when it is received of the original operating status for the WLAN card.
  • a variant of the further embodiment provides that, regardless of whether the implemented data transmission rules represent standards, the initialization and the change of the data transmission function for the WLAN card will each proceed in the same way.
  • Standards here can represent, for example, those in accordance with IEEE 802.11 or HiperLAN / 2.
  • a special variant of the further embodiment is characterized in that the interface of the baseband processor that communicates with the software interface of the functional area is designed as a 16-bit FIFO stack.
  • protocol module 5 and the hardware driver 6 are implemented in the host 4 of the first communicant 2.
  • the host 4 is connected to the WLAN card 9 in a communicating manner via a LAN card interfaces 12.
  • the WLAN card 9 is provided with the baseband processor 11 and the connected RF receiver 13.
  • the physical common connection conditions of the baseband processor 11 and the RF receiving part 13 are to be realized by the hardware interface 8.
  • the software conditions on the one hand from the hardware driver 6 and on the other hand from The baseband processor 11, and thus also the functional area 14 to be created, for which data exchange must be taken into account, are to be considered as agreed by the software interface 7.
  • This software interface 7 is formed, for example, by the two functions for sending and receiving the data transmission rule 10 (protocol).
  • the protocol module 5 implemented in the host 4 controls the first communicant 2 by using the hardware driver 6 via the WLAN card interface 12 to connect the hardware of the connected WLAN card 9 solely according to the conditions and specifications of one between the protocol module 5 and the data transmission rule 10 agreed to the baseband processor 11 is controlled.
  • This control takes place independently of the conditions and specifications of the operating system present in the host 4 and the implemented WLAN card interface 12.
  • the data transfer function 10 is recognized in the W-LAN card 9 in the baseband processor 11 and the functional area 14 is created in an execution phase with the software interface 7, which is implemented in accordance with the data transfer rule 10.
  • the functional area 14 is equipped in such a way that the respective data transmission function 10 is interpreted in such a way that the communicating interface of the baseband processor 11 is controlled via the software interface 7 of the functional area 14 in such a way that an associated BB (baseband) is processed by the baseband processor 11. Signal is provided with which the data transmission is ensured via an HF (radio frequency) transmitting / receiving part 13 of the WLAN card 9.
  • the communicating interface of the baseband processor 11 is designed as a 16-bit FIFO stack, for example.
  • I I baseband processor 12 LAN card interface (standardized according to PCLUSB)

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Small-Scale Networks (AREA)

Abstract

L'invention concerne un procédé de commande d'un processeur bande de base, selon lequel, dans un réseau sans fil, des règles de transmission de données sont mises en oeuvre dans des hôtes respectifs pour un premier et un second communiquant, lesquelles garantissent la transmission de données conforme aux règles entre le premier et le second communiquant, dans ledit réseau sans fil. Des paquets de données sont émis et/ou reçus par l'intermédiaire de voies de signaux électromagnétiques, cela au moyen de la partie émettrice-réceptrice haute fréquence d'une carte W-LAN reliée à l'hôte au moyen d'une interface de carte W-LAN, le processeur bande de base, placé sur la carte W-LAN, exécutant la préparation des paquets de données conformément auxdites règles. Selon l'invention, la commande du premier et/ou second communiquant(s) se fait au moyen d'un module de protocole mis en oeuvre dans l'hôte concerné, cela à l'aide du pilote de matériel également mis en oeuvre dans l'hôte concerné, en évitant l'interface de carte W-LAN, le matériel de la carte W-LAN connectée fonctionnant seulement conformément aux conditions et restrictions d'une règle de transmission de données acceptée conjointement entre le module de protocole et le processeur bande de base, cela indépendamment des conditions et des restrictions du système d'exploitation et de l'interface de carte W-LAN,et une région fonctionnelle étant générée dans ladite carte W-LAN avec une interface matérielle et une interface logicielle qui est mise en oeuvre selon la règle de transmission de données.
EP05736249A 2004-04-29 2005-04-20 Procede de commande d'un processeur bande de base Withdrawn EP1741237A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004021306 2004-04-29
PCT/DE2005/000724 WO2005107163A1 (fr) 2004-04-29 2005-04-20 Procede de commande d'un processeur bande de base

Publications (1)

Publication Number Publication Date
EP1741237A1 true EP1741237A1 (fr) 2007-01-10

Family

ID=34965873

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05736249A Withdrawn EP1741237A1 (fr) 2004-04-29 2005-04-20 Procede de commande d'un processeur bande de base

Country Status (6)

Country Link
US (1) US20070291738A1 (fr)
EP (1) EP1741237A1 (fr)
JP (1) JP2007535249A (fr)
CN (1) CN100484067C (fr)
DE (1) DE112005001629A5 (fr)
WO (1) WO2005107163A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8634435B2 (en) * 2010-03-30 2014-01-21 Qualcomm Incorporation Short term policy creation and execution of policy executed between communication events of a radio access technology within a coexistence manager hardware/software implementation

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6992990B2 (en) * 2000-07-17 2006-01-31 Sony Corporation Radio communication apparatus
US7039038B2 (en) * 2001-01-18 2006-05-02 Texas Instruments Incorporated Adaptive fragmentation for wireless network communications
US7519030B2 (en) * 2001-11-19 2009-04-14 At&T Intellectual Property Ii, L.P. Adaptive MAC fragmentation and rate selection for 802.11 wireless networks
EP1315353A1 (fr) * 2001-11-23 2003-05-28 Thomson Licensing S.A. Procédé pour établir une connexion entre deux dispositfs via un pont connectant un sous-réseau de type HAVi et un autre sous-réseau
US7461164B2 (en) * 2002-02-08 2008-12-02 Dsp Group Inc. Medium access control with software -and hardware- based components in a wireless network

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2005107163A1 *

Also Published As

Publication number Publication date
WO2005107163A1 (fr) 2005-11-10
CN101010911A (zh) 2007-08-01
US20070291738A1 (en) 2007-12-20
JP2007535249A (ja) 2007-11-29
DE112005001629A5 (de) 2007-05-24
CN100484067C (zh) 2009-04-29

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