WO2002005493A2 - High-capacity integrated wireless backhaul for broadband access networks - Google Patents
High-capacity integrated wireless backhaul for broadband access networks Download PDFInfo
- Publication number
- WO2002005493A2 WO2002005493A2 PCT/US2001/020427 US0120427W WO0205493A2 WO 2002005493 A2 WO2002005493 A2 WO 2002005493A2 US 0120427 W US0120427 W US 0120427W WO 0205493 A2 WO0205493 A2 WO 0205493A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- communication link
- communication
- base station
- parameters
- wireless communication
- Prior art date
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
- H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/2854—Wide area networks, e.g. public data networks
- H04L12/2856—Access arrangements, e.g. Internet access
- H04L12/2858—Access network architectures
- H04L12/2859—Point-to-point connection between the data network and the subscribers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/24—Traffic characterised by specific attributes, e.g. priority or QoS
- H04L47/2441—Traffic characterised by specific attributes, e.g. priority or QoS relying on flow classification, e.g. using integrated services [IntServ]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/24—Traffic characterised by specific attributes, e.g. priority or QoS
- H04L47/2491—Mapping quality of service [QoS] requirements between different networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/10—Small scale networks; Flat hierarchical networks
- H04W84/14—WLL [Wireless Local Loop]; RLL [Radio Local Loop]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
- H04W84/22—Self-organising networks, e.g. ad-hoc networks or sensor networks with access to wired networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W92/00—Interfaces specially adapted for wireless communication networks
- H04W92/04—Interfaces between hierarchically different network devices
- H04W92/045—Interfaces between hierarchically different network devices between access point and backbone network device
Definitions
- This invention relates to wireless communication systems, such as those including integrated backhaul. //
- Wireless communication systems include sending information between a sender and a receiver using a wireless communication link.
- the sender modulates information onto a wireless communication channel (such as a frequency band reserved for wireless communication between the sender and the receiver), and the receiver demodulates that information from the wireless communication channel (so as to recover the original information).
- a wireless communication channel such as a frequency band reserved for wireless communication between the sender and the receiver
- CPE customer premises equipment
- Non-wireless communication systems might include a wire line or fiber communication system including routers and the Internet.
- Such backhaul connectivity might should advantageously include inter-cell communication, as well as communication between selected cells (more specifically, the base station controllers in selected cells) and the non-wireless communication system.
- attempts to integrate backhaul connectivity with known systems would suffer from similar drawbacks to those that are common to internal communication within wireless communication systems; these would include drawbacks described in the Incorporated Disclosures (see “Related Applications” below).
- the physical characteristics of the communication link between a first cell and a second cell can change substantially over relatively short periods of time, even though the physical location of the base station controllers for those cells is not substantially altered. This is particularly so for interference, such as co-channel interference (CO), and for multipath effects, such as reflections resulting in intrasymbol interference, intersymbol interference, and fading.
- interference such as co-channel interference (CO)
- multipath effects such as reflections resulting in intrasymbol interference, intersymbol interference, and fading.
- selection of a single set of such physical characteristics even when physical conditions of the lines of sight between the first cell and the second cell are known, can result in relatively ineffective or inefficient communication between cells.
- the invention provides a method and system for adaptive point-to- point, or point to point-to-point, communication between a wireless communication system and a non-wireless backhaul communication system.
- the invention also provides a method and system for adaptive point-to-point, or point to point-to-point, communication among multiple cells in a wireless communication system.
- the wireless communication system includes a set of parameters for the physical layer and the MAC layer for communication with the non- wireless backhaul communication system, similar to those parameters for communication within individual cells of the wireless communication system.
- selected base station controllers modify those parameters to provide connectivity with the non- wireless commumcation system.
- the selected base station controllers modify those parameters to provide connectivity for intercommunication among multiple cells in the wireless condition system. Those parameters are modified, for example, to optimize intercell or intracell communication without excessive interference with (other) intracell communication.
- the wireless communication system also includes a set of second parameters, for the IP layer and QoS (quality of service) administration of communication between the selected base station controller and the non-wireless backhaul communication system.
- the selected base station controller adaptively modifies this set of second parameters to provide connectivity with at least one router in the non-wireless backhaul communication system.
- those second parameters are adaptively modified in response to the entire channel between multiple customer premises equipment and the router. This allows the selected base station controller to optimize backhaul communication between customer premises equipment and the non- wireless backhaul communication system.
- the invention provides an enabling technology for a wide variety of applications for communication, so as to obtain substantial advantages and capabilities that are novel and non-obvious in view of the known art. Examples described below primarily relate to a wireless communication system, but the invention is broadly applicable to many different types of communication in which characteristics of the commumcation link are subject to change. //
- Figure 1 shows a block diagram of a system including an integrated backhaul capability using adaptive communication in a wireless communication system.
- Figure 2 shows a block diagram of a system including an integrated backhaul capability in a wireless communication system with access points.
- Figure 3 shows a block diagram of a system including an integrated backhaul capability in a system with access points in a mesh network.
- Figure 4 shows a block diagram of a system including an integrated backhaul capability including QoS and flow management.
- Figure 5 shows a block diagram of a system including an integrated backhaul capability with QoS and flow management, using access points.
- base station controller in general, a device for performing coordination and control for a wireless communication cell. There is no particular requirement that the base station controller must be a single device; in alternative embodiments, the base station controller can include a portion of a single device, a combination of multiple devices, or some hybrid thereof.
- communication link in general, an element for sending info ⁇ nation from a sender to a recipient.
- the communication links referred to are generally wireless line of sight point to point communication links, there is no particular requirement that they are so restricted.
- customer premises equipment in general, a device for performing communication processes and tasks at a customer location, and operating in conjunction with the base station controller within a wireless communication cell.
- the customer premises equipment must be a single device; in alternative embodiments, the customer premises equipment can include a portion of a single device, a combination of multiple devices, or some hybrid thereof.
- IP parameters in general, a set of characteristics or parameters relating to an IP layer for a communication link.
- MAC parameters in general, with reference to a wireless communication link, a set of characteristics or parameters relating to media access control of a communication link.
- MAC parameters can include (a) a number of payload data bytes assigned per message, (b) a frequency of acknowledgement messages and a number of message retransmission attempts, (c) a fraction of the communication link allocated to downstream versus upstream communication, and the like.
- physical parameters in general, with reference to a wireless communication link, a set of characteristics or parameters relating to physical transmission of information on a communication link.
- physical characteristics can include (a) a symbol transmission rate, (b) a number of payload data bits assigned per symbol, (c) a number of error detection or correction bits assigned per symbol, and the like.
- QoS parameters in general, a set of characteristics or parameters relating to QoS (quality of service) for a communication link.
- wireless communication system in general, a communication system including at least one communication link that uses wireless communication techniques.
- wireless transport layer in general, a set of protocols and protocol parameters for sending and receiving information using wireless transport.
- the wireless transport layer is part of a multilayer systems architecture, in which the wireless transport layer is built using a physical transport layer, and the wireless transport layer is used by a logical transport layer such as IP.
- a system using adaptive point-to-point wireless communication between cells in a wireless communication system operates as part of a cellular wireless communication system.
- the cellular wireless communication system includes a communication model in which devices coupled to a network (such as a computer network) intercommunicate using message signals.
- these message signals include sequences of packets or cells, which have header information and which conform to the OSI model.
- an application protocol (layer 5, such as FTP)
- layer 3 such as IP
- MAC media access control protocol
- layer 2 uses a physical transport technique
- the system using adaptive point-to-point wireless communication is described herein with regard to layer 1 and layer 2, particularly as it applies to interactions between layer 1 and layer 2 and between those layers and layer 3.
- concepts and techniques of the invention are also applicable to other layers of the OSI model. For example, there might be cases where the type of application in the application layer (layer 5) is detected and responded to, so as to improve communication. Adapting those concepts and techniques to such other layers would not require undue experimentation or further invention, and is within the scope and spirit of the invention.
- FIG. 1 shows a block diagram of a system including an integrated backhaul capability using adaptive communication in a wireless communication system.
- a system 100 includes a set of wireless communication cells 110.
- Each wireless communication cell 110 occupies a region of space and includes a base station controller 120 and one or more customer premises equipment 130.
- Each wireless communication cell 110 includes a generally hexagon- shaped region of local surface area, such as might be found in a metropolitan region. Use of generally hexagon-shaped regions is known in the art of wireless communication because they are able to tile a local region with substantially no gaps. However, although in a preferred embodiment the wireless communication cell 110 includes a generally hexagon-shaped region, there is no particular requirement for using that particular shape; in alternative embodiments it may be useful to provide another shape or tiling of the local surface area.
- the wireless communication cells 110 include at least a first cell 111 and a second cell 112, in which the second cell 112 is disposed sufficiently near to the first cell 111 to allow wireless communication between the first cell 111 and the second cell 112.
- a first base station controller 121 in the first cell 111
- a second base station controller 122 in the second cell 112 communicate using the methods and system 100 described herein.
- the first cell 111 is located relatively centrally with regard to a set of such second cells 112.
- the first cell 111 can be located in the center of a hexagon formed of such second cells 112.
- the base station controller 120 includes a processor, program and data memory, mass storage, and one or more antennas for sending or receiving information using wireless communication techniques.
- each customer premises equipment 130 includes a processor, program and data memory, mass storage, and one or more antennas for sending or receiving information using wireless communication techniques. // Communication among devices within the wireless communication cell
- each customer premises equipment 130 is conducted on one-to-one basis between each customer premises equipment 130 and the base station controller 120.
- the base station controller 120 communicates with each customer premises equipment 130, and each customer premises equipment 130 communicates with the base station controller 120.
- Customer premises equipment 130 do not communicate directly with other customer premises equipment 130.
- the system 100 also includes a non- wireless communication system 140, and a communication link 150 coupling the first base station controller 121 and the non- wireless communication system 140.
- the communication link 150 can include a wireless communication link, such as a wireless communication link between a base station controller 120 and customer premises equipment 130.
- the communication link 150 can include a non- wireless communication link, such as an OC-3 communication link, another fiber communication link, or another type of wire line communication link.
- the communication link 150 can include a combination of non- wireless communication sub-links and wireless communication sub-links, which operate in conjunction or in parallel so as two coupled the first base station controller 121 and the non- wireless communication system 140.
- the communication link 150 can include a plurality of separate individual communication paths 151, such as one or moreover, or some combination of, the following:
- each of the first individual communication path 151 and the second individual communication path 151 include non-wireless (fiber-optic) communication links from a selected base station controller 120 to the non- wireless communication system 140.
- the first individual communication path 151 or the second individual communication path 151 may include wireless communication links from one or more base station controllers 120 to the non- wireless commumcation system 140. //
- the non- wireless communication system 140 includes a fiber-optic network coupling the non- wireless communication system 140 to or from a router or switch.
- the router or switch is itself coupled to a computer communication network (such as an Internet, an intranet, an extranet, a virtual private network, or some other type of communication network).
- a computer communication network such as an Internet, an intranet, an extranet, a virtual private network, or some other type of communication network.
- the system performs adaptive control of point-to-point communication similarly to the technique described for adaptive control of point-to-multipoint communication in the Incorporated Disclosures.
- the first base station controller 121 maintains a set of physical parameters and MAC parameters for each (nearby) second base station controller 122.
- control of each parameter by the first base station controller 121 is independent and individual with regard to each second base station controller 122.
- the first base station controller 121 determines power level and modulation type for each second base station controller 122 without regard to power level and modulation type for any other second base station controller 122.
- the first base station controller 121 determines power level for a particular second base station controller 122 without regard for modulation type for that same second base station controller 122. //
- the system performs adaptive control of point-to-point communication between the first base station controller 121 and each (nearby) second base station controller 122. This achieves at least the following purposes:
- physical parameters and MAC parameters include the physical parameters described in the Incorporated Disclosures. These include: antenna selection, power level selection, channel selection, modulation type, symbol rate, error code type, and equalization parameters. // In a preferred embodiment, physical parameters and MAC parameters include the MAC parameters described in the Incorporated Disclosures. These include: message size, acknowledgment in the transmission, and TDD duty cycle.
- the first base station controller 120 maintains these physical parameters and MAC parameters, and adaptively modifies them with changing conditions on the communication link between the first base station controller 120 and nearby base station controllers 120.
- the first base station controller 120 uses a technique for maintenance and adaptive modification similar to that described with respect to the base station controller 120 and its communication links with customer premises equipment 130 in the Incorporated Disclosures.
- the hysteresis parameters shown in the Incorporated Disclosures might include a first set of values for adaptive control of point-to-point communication, and might include a second set of values for adaptive control of point to multipoint communication.
- Figure 2 shows a block diagram of a system including an integrated backhaul capability in a wireless communication system with access points.
- an individual base station controller 120 is coupled to a plurality of customer premises equipment 130 using a set of access points 210, as described in the Incorporated Disclosures.
- the access points 210 provide enhanced communication and enhanced connectivity between the base station controller 120 and customer premises equipment 130.
- the access points 210 are integrated into the backhaul capability of the wireless communication system 100.
- communication between customer premises equipment 130 and the non- wireless communication system 140 can include connectivity (between a base station controller 120 and one or more customer premises equipment 130) provided by one or more access points 210.
- access points 210 also allow customer premises equipment 130 to communicate with non- wireless communication system 140, such as by means of one or more base station controllers 120. Access Points in a Mesh Network
- Figure 3 shows a block diagram of a system including an integrated backhaul capability in a system with access points in a mesh network.
- the access points 210 coupling an individual base station controller 120 a plurality of customer premises equipment 130 can include a mesh network 220, as described in the Incorporated Disclosures.
- the mesh network 220 includes a plurality of access points 210, each inter-communicating so as to deliver messages between the base station controller 120 and customer premises equipment 130.
- the mesh network 220 thus provides enhanced communication and enhanced connectivity between the base station controller 120 and customer premises equipment 130.
- the mesh network 220 thus also provides enhanced communication and enhanced connectivity between customer premises equipment 130 and non- wireless communication system 140. //
- the mesh network 220 is integrated into the backhaul capability of the wireless communication system 100.
- communication between customer premises equipment 130 and the non- wireless communication system 140 can include connectivity (between a base station controller 120 and one or more customer premises equipment 130) provided by the mesh network 220.
- the mesh network 220 also allows customer premises equipment 130 to communicate with non- wireless communication system 140, such as by means of one or more base station controllers 120.
- Figure 4 shows a block diagram of a system including an integrated backhaul capability including QoS and flow management.
- the system 100 provides for an integrated backhaul capability with wireless communication, including an entire communication pathway.
- the integrated backhaul capability includes customer premises equipment 130, base station controllers 120, backhaul capability elements (such as the communication link 150 between a selected base station controller 120 and the non- wireless communication system 140), and a router or switch coupled to the non- wireless communication system 140.
- base station controllers 120 adaptively adjust wireless communication, including both physical parameters and MAC parameters, for a substantial fraction of the entire communication pathway. This includes backhaul capability elements, base station controllers 120, and customer premises equipment 130. (In systems where access points 210 or a mesh network 220 of access points 210 are employed, this includes the access points 210 or the mesh network 220.)
- Adaptive adjustment of wireless communication causes the coupling of wireless link layers throughout the system 100, including backhaul capability elements, base station controllers 120, and customer premises equipment 130.
- adaptive adjustment of wireless communication includes adjustment of physical parameters and MAC parameters for wireless communication including base station controllers 120 and customer premises equipment 130.
- Base station controllers 120 also adaptively adjust IP parameters, QoS (quality of service) parameters, and flow management parameters, also for substantial fraction of the entire communication pathway. This includes backhaul capability elements, base station controllers 120 and customer premises equipment 130.
- QoS quality of service
- base station controllers 120 also adaptively adjust IP parameters, QoS parameters, and flow management parameters, for communication including one or more routers or switches in the non-wireless communication system 140.
- base station controllers 120 can adjust communication between routers or switches in the non- wireless communication system 140 and all elements of the wireless communication system 100. This allows base station controllers 120 to optimize the integrated backhaul capability of the wireless communication system 100 with regard to parameters used at the IP layer of communication.
- adaptive adjustment of IP layer parameters causes the coupling of network layer elements throughout the system 100, including routers or switches, backhaul capability elements, base station controllers 120, and customer premises equipment 130.
- Figure 5 shows a block diagram of a system including an integrated backhaul capability with QoS and flow management, using access points.
- base station controllers 120 also adaptively adjust wireless communication, including both physical parameters and MAC parameters, for substantial fraction of the entire communication pathway, when that communication pathway includes access points 210 or mesh networks 220. This includes those elements described with reference to figure 4, plus any access points 210 and mesh networks 220 of access points 210.
- Adaptive adjustment of wireless communication causes the coupling of wireless link layers throughout the system 100, including any access points 210 and mesh networks 220 of access points 210.
- adaptive adjustment of wireless communication includes adjustment physical parameters and MAC parameters for wireless communication including base station controllers 120, access points 210, and customer premises equipment 130.
- Base station controllers 120 also adaptively adjust IP parameters, QoS parameters, and flow management parameters, as described with regard to figure 4, for any access points 210 and any mesh networks 220 of access points 210. This also includes communication between routers or switches in the non- wireless communication system, as well as any access points 210 and any mesh network 220 of access points 210, so as to form a completely integrated wireless communication system 100 having integrated backhaul capability with a non- wireless communication system 140.
- the invention has general applicability to various fields of use, not necessarily related to the services described above.
- these fields of use can include one or more of, or some combination of, the following:
- FDMA frequency division multiple access
- CDMA code division multiple access
- the invention is applicable to any non-wireless communication, in which relative effectiveness or efficiency of communication can be achieved from dynamically adjusting communication parameters, such as physical parameters or MAC parameters.
- the invention can be generalized to non- wireless communication communication using modems in which equalization parameters are to be dynamically adjusted.
- the invention is applicable to other wireless communication systems, such as satellite communication systems and (microwave tower or other) point to point transmission systems.
- the invention is applicable to both fixed wireless communication systems, in which customer premises equipment do not move relative to the base station controller 120, and to mobile wireless communication systems, and which customer premises equipment move substantially relative to the base station controller 120.
- Other and further applications of the invention in its most general form, will be clear to those skilled in the art after perusal of this application, and are within the scope and spirit of the invention. //
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP01950539A EP1297656A2 (en) | 2000-06-26 | 2001-06-26 | High-capacity integrated wireless backhaul for broadband access networks |
AU2001271518A AU2001271518A1 (en) | 2000-06-26 | 2001-06-26 | High-capacity scalable integrated wireless backhaul for broadband access networks |
JP2002509236A JP2004503179A (en) | 2000-06-26 | 2001-06-26 | High-capacity scalable integrated wireless backhaul for broadband access networks |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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US09/604,784 | 2000-06-26 | ||
US09/604,784 US7092363B1 (en) | 2000-06-26 | 2000-06-26 | High-capacity scalable integrated wireless backhaul for broadband access networks |
Publications (2)
Publication Number | Publication Date |
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WO2002005493A2 true WO2002005493A2 (en) | 2002-01-17 |
WO2002005493A3 WO2002005493A3 (en) | 2003-01-09 |
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Application Number | Title | Priority Date | Filing Date |
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PCT/US2001/020427 WO2002005493A2 (en) | 2000-06-26 | 2001-06-26 | High-capacity integrated wireless backhaul for broadband access networks |
Country Status (6)
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US (2) | US7092363B1 (en) |
EP (1) | EP1297656A2 (en) |
JP (1) | JP2004503179A (en) |
KR (1) | KR20030058956A (en) |
AU (1) | AU2001271518A1 (en) |
WO (1) | WO2002005493A2 (en) |
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US10499456B1 (en) | 2013-03-15 | 2019-12-03 | Tarana Wireless, Inc. | Distributed capacity base station architecture for broadband access with enhanced in-band GPS co-existence |
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Also Published As
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EP1297656A2 (en) | 2003-04-02 |
KR20030058956A (en) | 2003-07-07 |
US7092363B1 (en) | 2006-08-15 |
WO2002005493A3 (en) | 2003-01-09 |
US20060227720A1 (en) | 2006-10-12 |
AU2001271518A1 (en) | 2002-01-21 |
JP2004503179A (en) | 2004-01-29 |
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