CN1163002C - Cellular internet protocol MODEM network - Google Patents
Cellular internet protocol MODEM network Download PDFInfo
- Publication number
- CN1163002C CN1163002C CNB998119423A CN99811942A CN1163002C CN 1163002 C CN1163002 C CN 1163002C CN B998119423 A CNB998119423 A CN B998119423A CN 99811942 A CN99811942 A CN 99811942A CN 1163002 C CN1163002 C CN 1163002C
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W99/00—Subject matter not provided for in other groups of this subclass
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W40/00—Communication routing or communication path finding
- H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
- H04W40/22—Communication route or path selection, e.g. power-based or shortest path routing using selective relaying for reaching a BTS [Base Transceiver Station] or an access point
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/26—Network addressing or numbering for mobility support
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
- H04W80/04—Network layer protocols, e.g. mobile IP [Internet Protocol]
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
An apparatus (100) according to the present invention is a cellular IP modem (150) which includes a baseband-to-intermediate frequency unit (153), and a radio frequency unit (154). The baseband-to-intermediate frequency unit (153) is configured to have a routing engine based on Cellular Internet Protocol. A method according to the present invention includes the steps of sending a data packet including routing information indicating an intermediate recipient other than a base station; receiving the packet at the intermediate recipient; and sending the packet in accordance with the routing information from the intermediate recipient to the base station. Additionally, a network architecture is described to support the creation of the Cellular IP network and its elements.
Description
Background of invention
TECHNICAL FIELD OF THE INVENTION
The present invention relates to the cellular radio data communication, particularly, relate to the cellular communication of using the special agreement that is referred to as cellular ip, and its network configuration.
Description of Related Art
Fig. 1 has provided an existing cellular data network 50.Internet service provider (ISP) 55 or general service provider provide the connection between each subscriber station 50,57 and the 58 internet business.Sub-district 49 and cellular service are created in base station 55, that is, subscriber station 50,57 and 58 provides service in sub-district 49 and by base station 55.Base station 55 connects subscriber station 50,58 and ISP55 by Radio Link.
Yet subscriber station 66 is perhaps outside the scope of base station 55, and perhaps in scope but because the blocking of building, as station 57 is blocked by building 56 and do not have the straight line sighting distance, therefore, subscriber station 57 and 66 can not be connected to ISP55.
Traditional solution is to set up another base station, or relaying is to the service of subscriber station 57 and 66.Yet this method needs the huge spending of cost and equipment, is necessary to seek a kind of more economical method of service being provided for subscriber station 57 and 66.
Brief summary of the invention
The present invention is directed to the other problem of these and prior art, propose a kind of honeycomb internet protocol (CIP) system.
According to a kind of embodiment, be a kind of cellular ip modulator-demodulator according to device of the present invention, comprise a base band-intermediate frequency unit and a radio frequency unit.Base band-intermediate frequency unit is configured to have the routing engine based on the honeycomb internet protocol.
According to another embodiment, comprise step according to method of the present invention: send the packet that comprises routing iinformation (that this routing iinformation represents is the intermediary recipient, rather than the base station); Receive grouping by the intermediary recipient; And send packets to the base station from the intermediary recipient by routing iinformation.
According to another embodiment, described a kind of network configuration, its supporting cellular IP network and its member's establishment.
The accompanying drawing summary
Fig. 1 is the block diagram of existing cellular network.
Fig. 2 is the block diagram according to cellular ip grouping of the present invention.
Figure MM-1 is new cellular ip network and member's block diagram thereof.
Figure MM-2 is according to of the present invention owing to the block diagram that blocks the subscriber station that does not have the straight line sighting distance.
Figure MM-3 is the block diagram of expression terminal use's arrangement.
Figure MM-4 is the block diagram of expression base station and member's thereof arrangement.
Figure MM-5 described with respect to the time, and how frequency is planned.
Fig. 3 is the frequency meter embodiment that is used to produce the sign indicating number spectrum.
Fig. 4 is according to bit stream modulation embodiment of the present invention.
Fig. 5 is according to RF part embodiment of the present invention.
Fig. 6 is according to demodulation embodiment of the present invention.
DESCRIPTION OF THE PREFERRED
Fig. 2 has provided the frame format of a cellular ip grouping.Grouping is a variable-length packets, and 512 bytes of maximum length are arranged.Grouping comprises the initial frame delimiter (SFD) of the preamble of one 7 byte, 1 byte, 9 byte destination addresses (DA), 9 byte source address (sa)s, 110 byte routing iinformation pieces (RIB), 6 byte type field, 6 byte status territories, 360 byte data territories and one 4 byte Cyclic Redundancy Check territory.
Preamble comprise alternately 1 and 0 determining conflict, and set up synchronously.
SFD comprises numerical value＜A5〉h, represent the beginning of a frame.
DA comprises 1 byte of expression such as the area of the position in the country that receives subscriber station, and 8 bits provide 256 (2
8) individual area.2 bytes are used for cell identifier in the expression area.16 bits provide 65,536 (2
16) individual sub-district; Receive the cellular ip address of subscriber station in 6 byte representation sub-districts.
SA and DA have similar territory, as long as replace receiving subscriber station with sending subscriber station.
RIB represent to divide into groups from the end user station to the base station the path that should adopt.Owing to contain 110 bytes at most, RIB can list nearly 10 links from the transmission subscriber station to the base station in detail when selecting route.
The grouping of frame type domain representation is control grouping or traffic packets.Particularly, 2 byte representation agreements of their beginning, ensuing 2 byte representation sub-protocols, 2 last byte representation business.For example, if 2 bytes of beginning be＜7777〉h, ensuing 2 bytes are＜0707〉h, this just represents one " firmware upgrade " order, the 3rd 2 bytes are provided with various signs.Another example, if the beginning 2 bytes be＜0800〉h, this just indicate ensuing 2 bytes will represent " tcp/udp " and the 3rd 2 byte will represent " service port number " (for example, the Email port is 25, the http port be 80 and the ftp port be 20).Other sub-protocol of cellular ip comprises route discovery protocols, Apple Talk Echo Protocol Apple Talk and Remote configuration agreement.
These information is represented in the status field, and for example: grouping is that ACK grouping or NACK grouping, the number that is in the packet of wait state, spread spectrum synchronizing information or grouping are local grouping or the grouping that is routed.Data field comprises the nearly data of 360 bytes.CRC comprises EDC error detection and correction information.
Route characteristics
Figure MM-2 has illustrated the route characteristics of honeycomb IP network 100.ISP102 provides the exchange of internet business for each subscriber station 104 and 106.Other base station has defined the sub-district 112 and 114 of cellular service respectively, that is, subscriber station 104 is sub-districts 100, and provides service etc. by base station 102.104 and 106 modulator-demodulator is connected to ISP102 in the sub-district.
The subscriber station that is labeled as house A is 100 outside in the sub-district, this or because it outside scope, though or because it in scope by as 107 building or other building block.In this case, subscriber station house A uses routing table to set up RIB, the communication link that expression is suitable.
Routing table can be static state or dynamic.When static routing, begin an installation at the cellular ip modulator-demodulator, routing table has just been determined.Subscriber station 116 has a routing table, and it also comprises the information that expression subscriber station house A is connected to the modulator-demodulator of the house B that is covered by base station 102 except comprising other all routing iinformations.If house B not in service range, may also have many additional lanes by as additional redundancy.
The network configuration feature
This network configuration adopts the collision detection multiple access structure (CSMA/CD) that has carrier sense of time slot, and wherein all users share whole bandwidth.Cellular ip can be realized in frequency-hopping spread spectrum.For example, each sub-district can be configured in 100 time slots broadcasting (or be equal to, 100 frequency hopping frequencies), that is, and and transmission per second saltus step 100 times.Each subscriber station in the sub-district and base station respectively dispose an initial number of transitions.Initial number of transitions is that any one user's modulator-demodulator begins to send grouping up to the saltus step numerical value that finishes, when any one user when sending grouping, other user waits for transmitting up to its and finishes, and is other saltus step time slot even other user uses.The advantage of this mode is that it has further reduced conflict between the modulator-demodulator, because short of other modulator-demodulator is transmitting grouping, each modulator-demodulator just begins transmission with the number of transitions of oneself.For example, if one wherein the modulator-demodulator probability that can begin to transmit conflict in the CSMA/CD net of grouping in any moment at random be x, if and the scheme of this fixed time benchmark is in 100 saltus steps " in this case jump ", then this will be further reduces conflict according to the factor of x/100.Number of transitions or setting when mounted, otherwise passing through the ISP base station is each station configuration.
This method minimizes conflict, because whether each station is available by monitoring the initial number of transitions that current transmission determines it.If available, this station begins to send by its initial number of transitions then; If unavailable, should wait at the station then.This method reduces conflict: there is identical initial number of transitions at (1) two station, and (2) they all want to send.
The subscriber station part
Figure MM-3 has provided user's modulator-demodulator 150 and computer 160 parts.Under sending mode, the grouping that computer 160 produces any agreement, modulator-demodulator is inserted in the cellular ip grouping, and modulator-demodulator 150 sends this grouping.Under receiving mode, modulator-demodulator 150 receives the cellular ip grouping, therefrom removes cellular ip information, and is sent to the computer 160 that carries out packet transaction.
Modulator-demodulator 150 comprises a radio frequency (RF) unit 154, " indoor or outdoors " antenna 155 and a base band-intermediate frequency (BIF) unit 153.RF unit 154 is modular, is configured at an easy rate on the predefined operating frequency.Predetermined frequency comprises the MMDS of 2.6GHz; The LMDS of 28GHz and two frequency ranges of 29GHz; The ISM of 902-928GHz, 2.4GHz and three frequency ranges of 5.7GHz; ITFS; MDS; And other dedicated frequency.
BIF unit 158 will be converted to from the base-band information of computer 160 and be fit to the intermediate frequency information that RF unit 154 is handled.Link between modulator-demodulator 150 and the computer 160 can be serial cable, parallel cable, scsi cable, Ethernet or universal serial bus cable.
Though the present invention is described according to " modulator-demodulator " and " computer ",, estimate that similar principle can be applicable on the integrating device that is similar to current existing cell phone and personal digital assistant along with the trend of miniaturization.In addition, estimate the present invention except the conversion that is applied to numerical data and transmitting, also can be applicable to analogue data (as, voice).
The ISP station arrangement
Figure MM-4 has provided the configuration of base station.Base station 109 comprises a gps antenna 113, GPS unit 112, a RF unit 111 and a computer motherboard 110.Basic GPS " HA Global Positioning Satellite receiver " 112 and 113 is used for making the base station that a general timing base is arranged.
Figure MM-1 has provided three sub-district (sub-district # 1, sub-district # 2 and sub-district #3) configuration, they all use GPS " HA Global Positioning Satellite " 100 to set up three universal reference between the base station, so at satellite moment t1, sub-district # 1 frequency of utilization F1, sub-district # 2 frequency of utilization F2, and sub-district # 3 frequency of utilization F3, at satellite t2 constantly, frequency will be by redistributing shown in the table # 1 among the figure MM-1, or the like.
Figure MM-5 has provided the satellite time frequency planning of three base stations.These characteristics allow our base station to reuse frequency in neighbor cell, have further improved the availability of frequency spectrum.
In a given sub-district (as the sub-district # 1 among the figure MM-1), it is synchronous with basic transfer station 101 that modulator-demodulator keeps, because basic transfer station 101 sends synchronization burst periodically.This synchronization burst helps the modulator-demodulator in the #1 of sub-district to follow the carrier wave saltus step of the basic transfer station 101 in the #1 of sub-district, because modulator-demodulator has determined according to their programming firmware which carrier frequency basic transfer station 101 will jump to, this is to realize by extract these carrier frequencies from the synchronization burst of basic transfer station 101.
The frequency spectrum of coding
In aforesaid network configuration, the application of spread spectrum makes many sub-districts can coexist as in the same region.
According to the present invention,, a byte stream is delivered to the group of frequencies controller as code word so that produce the unique frequency spectrum relevant with this byte according to a predefined code table that is used to get in touch byte and frequency spectrum as shown in Figure 3.
Then a summing junction is delivered in the output of group of frequencies, so that produce frequency spectrum.For example, it will encourage bit 0, bit 1 and bit 2 if there are 3 bit bytes to arrive, and enable or forbid buffering area so as in frequency spectrum generation SIN function or do not produce SIN function.
In embodiment preferred as shown in Figure 4, bit 0 is byte streams of importing from computer to bit 7.I output is the output of excitation homophase spectrum of carrier, and Q output is the frequency spectrum output of the Q output of excitation quadrature carrier.
Any transmitter that in spread spectrum system, uses the coding spectrum modulation to set up, no matter be the direct sequence frequency hopping that is used for setting up the wireless computer communication of honeycomb internet, the wide area network that no matter is based on or is not based on the honeycomb internet protocol and no matter be the spread spectrum or the coding spectrum modulation that is used for wired compunication of spread spectrum not, all within the scope of the present invention.
Usually, the embodiment of the radio frequency part of coding frequency spectrum modulation receiver as shown in Figure 5.Antenna receiving signal and amplifying signal.Then, the signal outside any frequency band through the filter filtering, is carried out mixing with the frequency-hopping spread spectrum frequency of being determined by synthesizer again, this mates the same sequence of transmitter fully, so that produce IF output.
Demodulator as shown in Figure 6.Need to use the additional gain level to come electrode compensation.I/q demodulator is demodulated into two frequency spectrums with IF, promptly is respectively I coding frequency spectrum modulation spectrum and Q coding frequency modulation spectrum.To the encode phonological component of frequency spectrum modulation spectrum of tone decoding phase-locked loop is decoded into original bit, to form the byte of initial generation voice; And then send it to computer.
Claims (18)
1. one kind is transmitted the method that cellular data divides into groups in the intelligent cellular IP network, and described cellular data grouping comprises: be used to conflict a mensuration and a synchronous preamble; A frame start delimiter (SFD); A destination address (DA); A source address (sa); A routing iinformation piece (RIB); And information field, wherein when a transmission/receiving station is in that original transmission sub-district or target receive outside the sub-district or receives the sub-district and be subjected to shielding with respect to this original transmission sub-district or target, described RIB identification at least one intermediary recipient except the base station that receives described packet said method comprising the steps of:
Send described packet from one first transmission/receiving station; With
Receive described packet one second transmission/receiving station.
2. the method for claim 1, wherein also comprise when the described first or second transmission/receiving station is in that original transmission sub-district or target receive outside the sub-district or receives the sub-district and be subjected to shielding with respect to this original transmission sub-district or target, locate to receive this packet described intermediary recipient.
3. the information field that the process of claim 1 wherein comprises:
A type field represents that this grouping is control grouping or traffic packets;
A status field;
A data field; And
A Cyclic Redundancy Check territory comprises EDC error detection and correction information.
4. the method for claim 3, type field wherein comprises:
The protocol-identifier of one 2 byte;
The sub-protocol sign of one 2 byte; And
The service identification of one 2 byte.
5. the method for claim 3, status field wherein is configured to and can represents: this grouping is ACK grouping or NACK grouping, the number that is in the packet of wait state, spread spectrum synchronizing information, maybe this grouping is local grouping or the grouping that is routed.
6. the destination address that the process of claim 1 wherein comprises:
An expression receives the regional designator of subscriber station ground zone position;
A cell identifier of representing sub-district in this area; And
The cellular ip address of the described reception subscriber station in this sub-district.
7. the source address that the process of claim 1 wherein comprises:
An expression sends the regional designator of subscriber station ground zone position;
A cell identifier of representing sub-district in this area; And
The cellular ip address of the described transmission subscriber station in this sub-district.
8. the routing iinformation piece that the process of claim 1 wherein the routed path of representing to divide into groups from transmission/reception subscriber station to the base station.
9. the method for claim 8, routing iinformation piece wherein are configured to represent that nearly 10 are in the routing links that send between subscriber station and the base station.
10. the grouping that the process of claim 1 wherein is the variable length data grouping.
11. the method for claim 10, wherein this grouping has the maximum byte length of 512 bytes.
12. a method of selecting the packet route in the intelligent cellular IP network, wherein transmission/receiving station is in outside original transmission sub-district or the target reception sub-district, or has been subjected to shielding with respect to this original transmission sub-district or target reception sub-district, and the method comprising the steps of:
Transmission comprises the packet of routing iinformation piece (RIB), and this routing iinformation piece (RIB) comprises represents that at least one is not the intermediary recipient's of base station routing iinformation;
Receive this grouping by said at least one intermediary recipient; And
Send this by said routing iinformation from least one intermediary recipient and be grouped into the reception base station;
Wherein, described at least one intermediary recipient is a different transmission/receiving station in described sub-district.
13. the method for claim 12, routing iinformation wherein are according to the specific routing table of each transmission/receiving station is determined.
14. the method for claim 13, routing table wherein can be static state or dynamic.
15. a Cellular Networks that is used to send/receive the minimizing conflict of cellular ip packet comprises:
Be distributed in a plurality of sub-districts in the network, each sub-district is related with a definite frequency in the given moment;
Be positioned at the base station of each described sub-district, be configured to redistribute the frequency of neighbor cell, and send synchronization burst each sub-district in these a plurality of sub-districts periodically by general timing base; And
Be positioned at a plurality of user transmission/receiving station of each sub-district of these a plurality of sub-districts of network, each user transmission/receiving station is related with frequency hopping number separately, if Guan Lian frequency hopping number determines it is available with it, then transmission/receiving station wherein be configured to send on one's own initiative/receive packet, described packet comprises a routing iinformation piece (RIB), this routing iinformation piece (RIB) is identified at least one intermediary recipient except the base station that receives described packet in the network, and the synchronization burst that each the user transmission/receiving station in the respective cell in wherein a plurality of sub-district sent according to the cycle keeps and said base station synchronization.
16. the cellular network of claim 15, general timing base is wherein determined according to HA Global Positioning Satellite.
17. cellular modem comprises:
A radio frequency unit that is used to send/receive packet; And
A base band-intermediate frequency converting unit, it comprises a cellular network routing engine based on cellular ip, and is configured to the base-band information from computer is converted to the intermediate frequency information of handling for radio frequency unit;
Wherein modulator-demodulator is configured to the router in the cellular network, and described packet comprises a routing iinformation piece (RIB), and this routing iinformation piece (RIB) is identified at least one intermediary recipient except the base station that receives described packet in the network.
18. the cellular modem of claim 17, radio frequency unit wherein are configured to work at MMDS, LMDS, ISM, ITFS and MDS frequency spectrum.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US9572098P | 1998-08-07 | 1998-08-07 | |
| US60/095720 | 1998-08-07 | ||
| US14071799P | 1999-06-22 | 1999-06-22 | |
| US60/140717 | 1999-06-22 | ||
| CA002337371A CA2337371A1 (en) | 1998-08-07 | 2001-02-16 | Cellular internet protocol modem network |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1323473A CN1323473A (en) | 2001-11-21 |
| CN1163002C true CN1163002C (en) | 2004-08-18 |
Family
ID=27171470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB998119423A Expired - Fee Related CN1163002C (en) | 1998-08-07 | 1999-08-06 | Cellular internet protocol MODEM network |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP1101307A4 (en) |
| JP (1) | JP2002522950A (en) |
| CN (1) | CN1163002C (en) |
| CA (1) | CA2337371A1 (en) |
| WO (1) | WO2000008788A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6049593A (en) | 1997-01-17 | 2000-04-11 | Acampora; Anthony | Hybrid universal broadband telecommunications using small radio cells interconnected by free-space optical links |
| US6820201B1 (en) | 2000-08-04 | 2004-11-16 | Sri International | System and method using information-based indicia for securing and authenticating transactions |
| SE522101C2 (en) * | 2001-04-20 | 2004-01-13 | Swe Dish Satellite Sys Ab | A communication device and a link system for satellite communication |
| JP2003319442A (en) * | 2002-04-25 | 2003-11-07 | Nec Corp | Mobile communication system |
| CA2683759A1 (en) | 2007-04-13 | 2008-10-23 | Interdigital Technology Corporation | Method and apparatus for integrating a soft mobile voip client in a cellular pc card |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5673031A (en) * | 1988-08-04 | 1997-09-30 | Norand Corporation | Redundant radio frequency network having a roaming terminal communication protocol |
| US5159592A (en) * | 1990-10-29 | 1992-10-27 | International Business Machines Corporation | Network address management for a wired network supporting wireless communication to a plurality of mobile users |
| US5442633A (en) * | 1992-07-08 | 1995-08-15 | International Business Machines Corporation | Shortcut network layer routing for mobile hosts |
| US5327486A (en) * | 1993-03-22 | 1994-07-05 | Bell Communications Research, Inc. | Method and system for managing telecommunications such as telephone calls |
| US5353283A (en) * | 1993-05-28 | 1994-10-04 | Bell Communications Research, Inc. | General internet method for routing packets in a communications network |
| WO1994030028A1 (en) * | 1993-06-16 | 1994-12-22 | Com 21, Inc. | Multi protocol personal communications system |
| US5544222A (en) * | 1993-11-12 | 1996-08-06 | Pacific Communication Sciences, Inc. | Cellular digtial packet data mobile data base station |
| SE9304119D0 (en) * | 1993-12-10 | 1993-12-10 | Ericsson Ge Mobile Communicat | Devices and mobile stations for providing packaged data communication in digital TDMA cellular systems |
| US5793762A (en) * | 1994-04-12 | 1998-08-11 | U S West Technologies, Inc. | System and method for providing packet data and voice services to mobile subscribers |
| US5570367A (en) * | 1994-07-29 | 1996-10-29 | Lucent Technologies Inc. | Asymmetric protocol for wireless communications |
| US5606595A (en) * | 1994-08-19 | 1997-02-25 | Lucent Technologies Inc. | Equal access to inter-exchange carriers in a mobile wireless packet data communication system |
| US5657326A (en) * | 1994-12-20 | 1997-08-12 | 3Com Corporation | Radio based collision detection for wireless communication system |
| US5713075A (en) * | 1995-11-30 | 1998-01-27 | Amsc Subsidiary Corporation | Network engineering/systems engineering system for mobile satellite communication system |
-
1999
- 1999-08-06 CN CNB998119423A patent/CN1163002C/en not_active Expired - Fee Related
- 1999-08-06 EP EP99939034A patent/EP1101307A4/en not_active Withdrawn
- 1999-08-06 JP JP2000564321A patent/JP2002522950A/en not_active Withdrawn
- 1999-08-06 WO PCT/US1999/017793 patent/WO2000008788A1/en not_active Application Discontinuation
-
2001
- 2001-02-16 CA CA002337371A patent/CA2337371A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| WO2000008788A1 (en) | 2000-02-17 |
| EP1101307A1 (en) | 2001-05-23 |
| JP2002522950A (en) | 2002-07-23 |
| EP1101307A4 (en) | 2002-04-10 |
| CA2337371A1 (en) | 2002-08-16 |
| CN1323473A (en) | 2001-11-21 |
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