US20050281230A1 - Support of plural chip rates in a cdma system - Google Patents

Support of plural chip rates in a cdma system Download PDF

Info

Publication number
US20050281230A1
US20050281230A1 US10/537,195 US53719505A US2005281230A1 US 20050281230 A1 US20050281230 A1 US 20050281230A1 US 53719505 A US53719505 A US 53719505A US 2005281230 A1 US2005281230 A1 US 2005281230A1
Authority
US
United States
Prior art keywords
timeslots
point
base station
chip
user equipment
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.)
Abandoned
Application number
US10/537,195
Other languages
English (en)
Inventor
Martin Beale
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.)
IPWireless Inc
Original Assignee
IPWireless Inc
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 IPWireless Inc filed Critical IPWireless Inc
Assigned to IPWIRELESS, INC. reassignment IPWIRELESS, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BEALE, MARTIN W.
Publication of US20050281230A1 publication Critical patent/US20050281230A1/en
Assigned to SOLECTRON CORPORATION reassignment SOLECTRON CORPORATION SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: IPWIRELESS, INC.
Assigned to NORTHROP GRUMMAN INFORMATION TECHNOLOGY, INC. reassignment NORTHROP GRUMMAN INFORMATION TECHNOLOGY, INC. SECURITY AGREEMENT Assignors: IPW HOLDINGS, INC., IPW PARENT HOLDINGS INC., IPWIRELESS PTE LIMITED, IPWIRELESS U.K. LIMITED, IPWIRELESS, INC.
Assigned to IPWIRELESS, INC. reassignment IPWIRELESS, INC. RELEASE BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). Assignors: FLEXTRONICS CORPORATION (FORMALLY KNOWN AS SOLECTRON CORPORATION)
Assigned to NORTHROP GRUMMAN INFORMATION TECHNOLOGY, INC. NOW KNOWN AS NORTHROP GRUMMAN SYSTEMS CORPORATION BY REASON OF MERGER reassignment NORTHROP GRUMMAN INFORMATION TECHNOLOGY, INC. NOW KNOWN AS NORTHROP GRUMMAN SYSTEMS CORPORATION BY REASON OF MERGER AMENDED AND RESTATED PATENT SECURITY AGREEEMENT Assignors: IPW HOLDINGS, INC., IPWIRELESS PTE LIMITED, IPWIRELESS U.K. LIMITED, IPWIRELESS, INC.
Assigned to IPWIRELESS, INC. reassignment IPWIRELESS, INC. RELEASE BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). Assignors: NORTHROP GRUMMAN SYSTEMS CORPORATION (SUCCESSOR BY MERGER TO NORTHROP GRUMMAN INFORMATION TECHNOLOGY, INC.)
Assigned to WIRELESS TECHNOLOGY SOLUTIONS LLC reassignment WIRELESS TECHNOLOGY SOLUTIONS LLC ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: IP WIRELESS, INC.
Priority to US13/046,081 priority Critical patent/US20110158221A1/en
Priority to US13/212,890 priority patent/US9094095B2/en
Assigned to IPWIRELESS, INC. reassignment IPWIRELESS, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: WIRELESS TECHNOLOGY SOLUTIONS LLC
Assigned to NVIDIA CORPORATION reassignment NVIDIA CORPORATION PATENT PURCHASE AGREEMENT Assignors: IP WIRELESS, INC., VC WORLDWIDE LTD.
Abandoned legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2618—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using hybrid code-time division multiple access [CDMA-TDMA]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2628—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using code-division multiple access [CDMA] or spread spectrum multiple access [SSMA]
    • H04B7/264—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using code-division multiple access [CDMA] or spread spectrum multiple access [SSMA] for data rate control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2201/00—Indexing scheme relating to details of transmission systems not covered by a single group of H04B3/00 - H04B13/00
    • H04B2201/69—Orthogonal indexing scheme relating to spread spectrum techniques in general
    • H04B2201/707—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation
    • H04B2201/70703—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation using multiple or variable rates
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
    • H04J2011/0003—Combination with other multiplexing techniques
    • H04J2011/0013—Combination with other multiplexing techniques with TDM/TDMA
    • 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
    • H04W88/08—Access point devices

Definitions

  • This invention relates to code division multiple access (CDMA) systems, and particularly (though not exclusively) to wireless CDMA systems operating in time division duplex (TDD) mode.
  • CDMA code division multiple access
  • TDD time division duplex
  • CDMA code division multiple access communications
  • the existing method to manage the transition between operating at a lower chip rate and a higher chip rate is for the operator to fully roll out a lower chip rate network before rolling out a higher chip rate network. If there are “islands” of higher chip rate coverage, the network will be able to hand over (to the high chip rate network cells) users with equipment capable of operation at both the lower and higher chip rate who enter the “island”: this provides some element of backward compatibility between the low and high chip rate networks. During such a transition period, the network operator will provide some subscribers with user equipment that is capable of operating at both the lower and the higher chip rates.
  • the operator will only be able to use its lower chip rate network equipment to service the majority of users: only those (probably new) users that have been supplied with user equipment capable of operating at the higher chip rate will be able to get service from the higher chip rate network equipment.
  • CDMA code division multiple access
  • a base station for use in a code division multiple access (CDMA) system supporting a plurality of chip rates, as claimed in claim 47 .
  • CDMA code division multiple access
  • user equipment for use in a CDMA system supporting a plurality of chip rates, as claimed in claim 69 .
  • FIG. 1 shows a block schematic diagram illustrating a 3GPP radio communication system in which the present invention may be used
  • FIG. 2 shows a block schematic diagram illustrating a possible timeslot structure for a low chip rate system
  • FIG. 3 shows a block schematic diagram illustrating a possible timeslot structure for a high chip rate system
  • FIG. 4 shows a block schematic diagram illustrating a possible timeslot structure for a mixed chip rate system
  • FIG. 5 shows a block schematic diagram illustrating a possible timeslot structure for a mixed chip rate system with multiple switching points
  • FIG. 6 shows a block schematic diagram illustrating a possible timeslot structure for multi chip rate operation using a single low chip rate carrier
  • FIG. 7 shows a block schematic diagram illustrating a possible timeslot structure for multi chip rate operation using multiple low chip rate carriers.
  • a typical, standard UMTS Radio Access Network (UTRAN) system 100 is conveniently considered as comprising: a terminal/user equipment domain 110 ; a UMTS Terrestrial Radio Access Network domain 120 ; and an infrastructure domain 130 .
  • UTRAN Universal Terrestrial Radio Access Network
  • terminal equipment (TE) 110 A is connected to mobile equipment (ME) 110 B via the wired or wireless R interface.
  • the ME 110 B is also connected to a user service identity module (USIM) 110 C; the ME 110 B and the USIM 110 C together are considered as a user equipment (UE) 110 D.
  • the UE 110 D communicates data with a Node B (base station) 120 A in the radio access network domain ( 120 ) via the wireless Uu interface.
  • the Node B 120 A communicates with a radio network controller (RNC) 120 B via the Iub interface.
  • the RNC 120 B communicates with other RNC's (not shown) via the Iur interface.
  • the Node B 120 A and the RNC 120 B together form the UTRAN 120 C.
  • the RNC 120 B communicates with a serving GPRS service node (SGSN) 130 A in the core network domain 130 via the Iu interface.
  • SGSN serving GPRS service node
  • the SGSN 130 A communicates with a gateway GPRS support node 130 B via the Gn interface;
  • the SGSN 130 A and the GGSN 130 B communicate with a home location register (HLR) server 130 C via the Gr interface and the Gc interface respectively.
  • the GGSN 130 B communicates with public data network 130 D via the Gi interface.
  • the elements RNC 120 B, SGSN 130 A and GGSN 130 B are conventionally provided as discrete and separate units (on their own respective software/hardware platforms) divided across the radio access network domain ( 120 ) and the core network domain ( 130 ), as shown the FIG. 1 .
  • the RNC 120 B is the UTRAN element responsible for the control and allocation of resources for numerous Node B's 120 A; typically 50 to 100 Node B's may be controlled by one RNC.
  • the RNC also provides reliable delivery of user traffic over the air interfaces. RNC's communicate with each other (via the Iur interface) to support handover and macrodiversity.
  • the SGSN 130 A is the UMTS Core Network element responsible for Session Control and interface to the HLR.
  • the SGSN keeps track of the location of an individual UE and performs security functions and access control.
  • the SGSN is a large centralised controller for many RNCs.
  • the GGSN 130 B is the UMTS Core Network element responsible for concentrating and tunnelling user data within the core packet network to the ultimate destination (e.g., internet service provider—ISP).
  • ISP internet service provider
  • the system 100 is a multiple chip rate system employing a lower chip rate and a higher chip rate.
  • the chip rates are integer multiples of 3.84 Mcps: the lower chip rate is 3.84 Mcps and the higher chip rate is 7.68 Mcps.
  • communication on the wireless interface Uu between UE 110 D and Node B 120 A occurs in a variety of predefined channels.
  • the timeslot structure, for signalling on the wireless interface Uu between UE 110 D and Node B 120 A, for a lower chip rate system (assumed to be a chip rate of 3.84 Mcps in this example) could be assigned as shown in FIG. 2 .
  • a single frame 200 is shown containing 15 timeslots.
  • 5 timeslots (the right-most 5 timeslots depicted in the figure) are shown as uplink timeslots (for data transmitted in the direction from the user equipment to the network) and 10 timeslots (the left-most 10 timeslots depicted in the figure) are shown in the downlink (for data transmitted in the direction from the network to the user equipment).
  • One of the downlink timeslots (the left-most timeslot depicted in the figure), in this case labeled “3.84 beacon”, has a special purpose: it used to contain “beacon” data for performing a beacon function (as is well understood in a 3GPP system, and need not be described in further detail). However, it will be understood that in general this timeslot need not necessarily be used to perform a beacon function.
  • An example timeslot structure for a higher chip rate system (assumed to be a chip rate of 7.68 Mcps in this example) could be assigned as shown in FIG. 3 .
  • a single frame 300 is shown containing 15 timeslots (it is assumed for the purposes of this example that the timeslot duration and frame duration of the high chip rate and low chip rate systems are identical).
  • 5 timeslots (the right-most 5 timeslots depicted in the figure) are shown as uplink timeslots (for data transmitted in the direction from the user equipment to the network) and 10 timeslots (the left-most 10 timeslots depicted in the figure) are shown in the downlink (for data transmitted in the direction from the network to the user equipment).
  • One of the downlink timeslots (the left-most timeslot depicted in the figure), in this case labeled “7.68 beacon”, has a special purpose: it used to contain “beacon” data for performing a beacon function (as is well understood in a 3GPP system, and need not be described in further detail). However, it will be understood that in general this timeslot need not necessarily be used to perform a beacon function.
  • FIG. 4 shows a possible timeslot structure relating to the invention. This figure numbers the timeslots in increasing order. In a subsequent frame, the timeslot numbering would reset to zero for the first timeslot of that subsequent frame and the frame number would increment.
  • timeslots 0 - 8 are assigned to the lower chip rate (3.84 Mcps). 6 of these timeslots (timeslots 0 - 5 ) are downlink timeslots and 3 (timeslots 6 - 8 ) are uplink timeslots.
  • One of the lower chip rate downlink timeslots (timeslot 0 ) is shown as a special purpose timeslot (in this case, it is referred to as the “3.84 beacon” timeslot).
  • 6 timeslots (timeslots 9 - 14 ) are assigned to the higher chip rate (7.68 Mcps).
  • timeslots 9 - 12 are downlink and 2 (timeslots 13 and 14 ) are uplink timeslots.
  • timeslot 9 One of the higher chip rate downlink timeslots (timeslot 9 ) is shown as a special purpose timeslot (in this case, it is referred to as the “7.68 beacon” timeslot).
  • this UE would search for the special purpose (“3.84 beacon”) timeslot.
  • the UE finds the special purpose lower chip rate timeslot it will recognise the existence of the network cell (in this example, it is assumed that the network is a cellular system) and will camp on that cell.
  • the UE will signal to the network that it exists using the lower chip rate in one of the timeslots 6 - 8 .
  • the network will recognise that the UE is a low chip rate UE and will only assign it resources in timeslots 0 - 8 in the future (for instance, if it assigns the UE a dedicated resource, it might assign it a single downlink channel in timeslot 5 once per frame and a single uplink channel in timeslot 8 once per frame—note that in a CDMA system, multiple channels may be supported per timeslot).
  • this UE would search for the special purpose (“7.68 beacon”) timeslot and would ignore the lower chip rate special purpose (“3.84 beacon”) timeslot.
  • the UE finds the special purpose higher chip rate timeslot it will recognise the existence of the network cell and will camp on that cell. The UE will signal to the network that it exists using the higher chip rate in the timeslot 13 or 14 .
  • the network will recognise that the UE is a high chip rate UE and will only assign it resources in timeslots 9 - 14 in the future (for instance, if it assigns the UE a dedicated resource, it might assign it a single downlink channel in timeslot 10 once per frame and a single uplink channel in timeslot 14 once per frame—note that in a CDMA system, multiple channels may be supported per timeslot).
  • the UE searches for the lower chip rate special purpose slot in preference to the higher chip rate special purpose slot. If the UE finds the lower chip rate special purpose slot, it will notify the cell of its existence and camp on the cell at the lower chip rate. The UE will inform the network of its capability to operate at the higher chip rate. The network may then decide to handover the UE to the higher chip rate network function. In this case, the UE camps on the higher chip rate in preference to the lower chip rate and the higher chip rate function in the network will allocate higher chip rate resource to the UE (from timeslots 9 - 14 in this example).
  • the UE displays some inflexibility between operating at the two chip rates: the UE is capable of changing only slowly from one chip rate to another, thus the network performs handover of dual mode equipment between the two chip rate networks and the different chip rate networks essentially operate independently.
  • the UE searches for the lower chip rate special purpose slot in preference to the higher chip rate special purpose slot. If the UE finds the lower chip rate special purpose slot, it will notify the cell of its existence and camp on the cell at the lower chip rate. The UE will inform the network of its capability to operate at the higher chip rate. The network may then allocate either lower chip rate (from timeslots 0 - 8 in this example) or higher chip rate resource (from timeslots 9 - 14 in this example) to the UE (a single allocation might even span the lower and higher chip rates such that a single allocation contains both lower chip rate and higher chip rate resource, e.g., timeslots 5 , 8 and 9 ).
  • the UE is capable of operating at both the lower and higher chip rates and can change between chip rates either every timeslot or every frame.
  • the lower chip rate and higher chip rate portions of the network are able to operate together (this arrangement may provide more capacity than when the higher and lower chip rate network functions operate independently due to trunking efficiency gains).
  • the UE In this second scenario, the UE must be aware of the chip rates that apply in the slots that it has been allocated.
  • the UE could autonomously detect the chip rate in the slot. This could be done by known methods such as spectral (frequency) analysis of the received data, analysis and comparison of the results of channel estimation, analysis of multi-user detector output, etc.—for example, in the case of channel estimation, channel estimates could be produced at 3.84 Mcps and 7.68 Mcps and then it could be assumed if the 3.84 Mcps channel estimate is better than the 7.68 Mcps channel estimate that the slot is actually 3.84 Mcps.
  • the UE could be told of the chip rate via higher layer signalling in an allocation message or could be told of the chip rate via broadcast higher layer signalling.
  • the UE could alternatively search for the higher chip rate special purpose slot in preference to the lower chip rate and the functionality in this case will be clear to those skilled in the art from the preceding description.
  • Embodiment 1 and Embodiment 2 described above in relation to FIG. 4 showed a slot structure with a single switching point between the lower chip rate system and the higher chip rate system (in the sense that the lower chip rate system occupied the low indexed timeslots and the high chip rate system occupied the high indexed timeslots), it will be appreciated that there may in fact be multiple switching points between low chip rate and high chip rate systems.
  • a slot structure (“Embodiment 3”) with multiple switching points is illustrated in FIG. 5 .
  • the timeslot structure of Embodiment 3 might be used for a variety of reasons.
  • the timeslot structure 500 of FIG. 5 might be used to allow for “synchronisation case 2”, which uses beacon slots per frame, one of the beacon slots being slot k, and the other being slot in k+8.
  • “synchronisation case 2” can facilitate inter-frequency and inter-system measurements (the UE can decode the beacon in the current frequency and then 8 slots later, it can look at the beacon on another frequency); it may also aid power control.
  • FIG. 5 illustrates aspects of the operation of the invention in the time domain. Aspects of the operation of the invention in the frequency domain are now considered. The following example embodiments relate to the example embodiments and main embodiment of the invention described previously.
  • the network operates within a spectral allocation of W high (for example, if the network supports operation at both 3.84 Mcps and 7.68 Mcps, then the spectral allocation for the network as a whole will be the bandwidth required to support a chip rate of 7.68 Mcps which is typically 10 MHz).
  • a timeslot frame structure 600 is employed and the network operates a single 3.84 Mcps network function in the lower chip rate timeslots (timeslots 0 - 8 ) and a single 7.68 Mcps network function in the higher chip rate timeslots (timeslots 9 - 14 ).
  • the spectrum of the 3.84 Mcps network function sits centrally in the spectrum allocation of the network as a whole (as illustrated by the waveforms depicted in the lower chip rate timeslots 0 - 8 in FIG. 6 ).
  • the carrier frequency of the 3.84 Mcps network function is the same as the carrier frequency of the 7.68 Mcps network function.
  • This arrangement may be advantageous when dual mode UEs can receive allocations at the two chip rates within the same frame.
  • the main benefit of this single low chip rate system in the low chip rate timeslots may be that Embodiments 1 and 2 fit more easily into this case.
  • synthesisers and other RF components
  • This Embodiment 4 may be used with Embodiments 1 and 2 described above.
  • a timeslot frame structure 700 is employed and the network operates two separate 3.84 Mcps network functions in the lower chip rate timeslots (timeslots 0 - 8 ) and a single 7.68 Mcps network function in the higher chip rate timeslots (timeslots 9 - 14 ).
  • two separate 3.84 Mcps network functions 710 and 720 ) coexist at the same time but are separated in frequency. As can be seen in FIG.
  • the waveforms depicted in the lower chip rate timeslots 0 - 8 in function 710 are centred on a higher frequency
  • the waveforms depicted in the lower chip rate timeslots 0 - 8 in function 720 are centred on a lower frequency offset from the higher frequency in function 710 .
  • the network has approximately twice the capacity at the lower chip rate than in the scenario described above (Embodiment 3).
  • the network can transfer users by handover operations between low chip rate carriers or between a low chip rate carrier and the high chip rate carrier and vice versa (according to the capabilities of the UE).
  • Embodiment 5 can be used with Embodiments 1 and 2 described above, though in the case of Embodiment 2 the UE will need to be informed of carrier frequencies and offsets of the one chip rate system relative to the other chip rate system (for example, if the UE is allocated timeslots 5 , 8 and 9 , the network will need to inform the UE of the carrier frequency of the higher chip rate system relative to the carrier frequency of the lower chip rate system).
  • the time slot allocations may be signalled to the UE via broadcast signalling (e.g., in system information blocks), via point to point signalling (e.g., defining the timeslot parameters for a single or a multiplicity of allocations).
  • the point to point signalling may be carried in radio resource control (RRC) messages, medium access control (MAC) messages (e.g., applied to High Speed Downlink Packet Access—HSDPA) or physical layer messages (similar to TFCI signalling).
  • RRC radio resource control
  • MAC medium access control
  • HSDPA High Speed Downlink Packet Access—HSDPA
  • HSDPA High Speed Downlink Packet Access—HSDPA
  • the UE may autonomously determine the chip rate applied in a timeslot.
  • each chip rate system may act independently of the other chip rate system (to the extent that any one chip rate would still function if the other chip rates were switched off in the frame: each chip rate is essentially controlled independently of the other chip rates), or one of the chip rates may operate collaboratively with another chip rate (the chip rates are controlled by a common controlling entity).
  • the number of lower chip rate functions may be proportional the ratio of the bandwidth of the higher chip rate system to the bandwidth of the lower chip rate system.
  • the method for supporting a plurality of chip rates in a CDMA system described above may be carried out in software running on a processor (not shown) in a Node B or UE, and that the software may be provided as a computer program element carried on any suitable data carrier (also not shown) such as a magnetic or optical computer disc.
  • CDMA code division multiple access

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
US10/537,195 2002-12-09 2003-12-09 Support of plural chip rates in a cdma system Abandoned US20050281230A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US13/046,081 US20110158221A1 (en) 2002-12-09 2011-03-11 Support of Plural Chip Rates in CDMA System
US13/212,890 US9094095B2 (en) 2002-12-09 2011-08-18 Support of plural bandwidths in a telecommunications system

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB0228613.6 2002-12-09
GB0228613A GB2396275B (en) 2002-12-09 2002-12-09 Support of plural chip rates in a CDMA system
PCT/GB2003/005361 WO2004054303A2 (en) 2002-12-09 2003-12-09 Support of plural chip rates in a cdma system

Related Child Applications (2)

Application Number Title Priority Date Filing Date
US13/046,081 Continuation US20110158221A1 (en) 2002-12-09 2011-03-11 Support of Plural Chip Rates in CDMA System
US13/212,890 Continuation US9094095B2 (en) 2002-12-09 2011-08-18 Support of plural bandwidths in a telecommunications system

Publications (1)

Publication Number Publication Date
US20050281230A1 true US20050281230A1 (en) 2005-12-22

Family

ID=9949287

Family Applications (3)

Application Number Title Priority Date Filing Date
US10/537,195 Abandoned US20050281230A1 (en) 2002-12-09 2003-12-09 Support of plural chip rates in a cdma system
US13/046,081 Abandoned US20110158221A1 (en) 2002-12-09 2011-03-11 Support of Plural Chip Rates in CDMA System
US13/212,890 Active 2025-06-22 US9094095B2 (en) 2002-12-09 2011-08-18 Support of plural bandwidths in a telecommunications system

Family Applications After (2)

Application Number Title Priority Date Filing Date
US13/046,081 Abandoned US20110158221A1 (en) 2002-12-09 2011-03-11 Support of Plural Chip Rates in CDMA System
US13/212,890 Active 2025-06-22 US9094095B2 (en) 2002-12-09 2011-08-18 Support of plural bandwidths in a telecommunications system

Country Status (8)

Country Link
US (3) US20050281230A1 (ja)
EP (1) EP1574100B1 (ja)
JP (2) JP2006509451A (ja)
KR (2) KR101061089B1 (ja)
CN (2) CN102624443B (ja)
AU (1) AU2003292397A1 (ja)
GB (1) GB2396275B (ja)
WO (1) WO2004054303A2 (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101485118A (zh) * 2006-07-07 2009-07-15 艾利森电话股份有限公司 共存网络的资源分配
US20140192712A1 (en) * 2013-01-09 2014-07-10 Qualcomm Incorporated Methods and apparatus for controlling access points coupled to a common power source

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2396275B (en) 2002-12-09 2006-03-15 Ipwireless Inc Support of plural chip rates in a CDMA system
US9226289B2 (en) * 2012-12-18 2015-12-29 Qualcomm Incorporated Systems and methods to conserve power of machine-to-machine devices using a shared data channel
WO2014163569A1 (en) * 2013-04-05 2014-10-09 Telefonaktiebolaget L M Ericsson (Publ) Methods and network nodes for handling information associated with one or more umts cells
KR102491174B1 (ko) * 2017-03-20 2023-01-25 하이파이 유에스에이 인크. Cdma-기반 미디어 인터페이스
CN113316094B (zh) * 2020-02-26 2023-03-31 成都鼎桥通信技术有限公司 一种集群组短数据的发送方法和系统

Citations (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5371734A (en) * 1993-01-29 1994-12-06 Digital Ocean, Inc. Medium access control protocol for wireless network
US5446739A (en) * 1993-01-06 1995-08-29 Kabushiki Kaisha Toshiba Radio communication system
US5974042A (en) * 1997-02-28 1999-10-26 Motorola, Inc. Service detection circuit and method
US6018528A (en) * 1994-04-28 2000-01-25 At&T Corp System and method for optimizing spectral efficiency using time-frequency-code slicing
US6088578A (en) * 1998-03-26 2000-07-11 Nortel Networks Corporation Burst request method and apparatus for CDMA high speed data
US6115390A (en) * 1997-10-14 2000-09-05 Lucent Technologies, Inc. Bandwidth reservation and collision resolution method for multiple access communication networks where remote hosts send reservation requests to a base station for randomly chosen minislots
US6370160B1 (en) * 1998-12-29 2002-04-09 Thomson Licensing S. A. Base to handset epoch synchronization in multi-line wireless telephone
US6438155B1 (en) * 1998-07-13 2002-08-20 Hewlett-Packard Company Decoding chip streams
US6563859B1 (en) * 1999-03-01 2003-05-13 Fujitsu Limited Receiver and receiving method in multi-carrier spread-spectrum communications
US6741577B1 (en) * 1999-11-29 2004-05-25 Koninklijke Philips Electronics N.V. Inter-frequency handover in wireless CDMA systems
US6760365B2 (en) * 2001-10-11 2004-07-06 Interdigital Technology Corporation Acquisition circuit for low chip rate option for mobile telecommunication system
US20050075125A1 (en) * 2002-01-21 2005-04-07 Bada Anna Marina Method and mobile station to perform the initial cell search in time slotted systems
US6885691B1 (en) * 1999-08-02 2005-04-26 Lg Information & Communications, Ltd. Scrambling codes and channelization codes for multiple chip rate signals in CDMA cellular mobile radio communication system
US20050201319A1 (en) * 2004-02-17 2005-09-15 Samsung Electronics Co., Ltd. Method for transmission of ACK/NACK for uplink enhancement in a TDD mobile communication system
USRE38808E1 (en) * 1994-12-23 2005-10-04 Itt Manufacturing Enterprises, Inc. Cellular positioning system (CPS)
US6996162B1 (en) * 1999-10-05 2006-02-07 Texas Instruments Incorporated Correlation using only selected chip position samples in a wireless communication system
US7012908B2 (en) * 2000-09-05 2006-03-14 Hitachi Kokusai Electric Inc. CDMA base transceiver system
US7089008B1 (en) * 1999-08-06 2006-08-08 Nokia Corporation Inter-system handover
US7099375B2 (en) * 2001-07-02 2006-08-29 Ipwireless, Inc. Chip rate invariant detector
US7103310B2 (en) * 2002-05-30 2006-09-05 Nortel Networks Limited Method of restricting the use of a radio terminal and an associated restriction device
US7123942B2 (en) * 2001-07-25 2006-10-17 Nortel Networks Limited Radio station with closed-loop transmission diversity, and process for controlling transmission from such a station
US7200124B2 (en) * 2001-11-17 2007-04-03 Samsung Electronics Co., Ltd. Signal measurement apparatus and method for handover in a mobile communication system
US20070081489A1 (en) * 2005-10-10 2007-04-12 Ipwireless, Inc. Cellular communication system and method for coexistence of dissimilar systems
US20070104085A1 (en) * 2005-10-27 2007-05-10 Qualcomm Incorporated Varying scrambling/ovsf codes within a td-cdma slot to overcome jamming effect by a dominant interferer
US7327780B2 (en) * 2001-03-14 2008-02-05 Mercury Computer Systems, Inc. Wireless communications systems and methods for multiple operating system multiple user detection
US7362829B2 (en) * 2003-07-18 2008-04-22 Broadcom Corporation Multi-band single-carrier modulation
US7400894B2 (en) * 2002-10-28 2008-07-15 Siemens Aktiengesellschaft Method for decentralized synchronization in a self-organizing radio communication system
US7672674B2 (en) * 1988-08-04 2010-03-02 Broadcom Corporation Remote radio data communication system with data rate switching
US7894802B2 (en) * 2001-12-21 2011-02-22 Siemens Aktiengesellschaft Method for carrying out the network-side recognition of specific capabilities of subscriber stations in a communications system

Family Cites Families (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4037575A1 (de) * 1990-11-26 1992-05-27 Iro Ab Optische fuehleinrichtung
JPH06276176A (ja) * 1993-03-18 1994-09-30 Fujitsu Ltd Ｃｄｍａ通信方式
US5600707A (en) * 1994-08-31 1997-02-04 Lucent Technologies Inc. Wireless channel setup using low bandwidth network for selecting high bandwidth data bearer channel of another network system for data transmission
JP3215018B2 (ja) * 1994-09-09 2001-10-02 三菱電機株式会社 移動通信システム
JP2897728B2 (ja) * 1996-07-16 1999-05-31 日本電気株式会社 無線ａｔｍ−ｌａｎにおける構内無線伝送方法とシステム
EP0841763B1 (en) * 1996-10-25 2003-12-10 Nokia Corporation Method for radio resource control
ATE304755T1 (de) * 1997-05-02 2005-09-15 Siemens Ag Tdma/cdma nachrichtenübertragungssystem mit anpassbarer datenrate
JP3058270B2 (ja) * 1998-04-22 2000-07-04 日本電気株式会社 Ｃｄｍａ通信方法、スペクトラム拡散通信システム、基地局、および端末装置
EP1104608A2 (en) * 1998-08-12 2001-06-06 SC- Wireless Inc. Method and apparatus for network control in communications networks
KR100383607B1 (ko) * 1998-09-14 2003-07-10 삼성전자주식회사 이동통신시스템에서다양한전송율을지원하는공통채널통신장치및방법
US6393012B1 (en) 1999-01-13 2002-05-21 Qualcomm Inc. System for allocating resources in a communication system
JP3845220B2 (ja) * 1999-02-09 2006-11-15 株式会社日立国際電気 Ｃｄｍａ受信機
JP2000286873A (ja) * 1999-03-30 2000-10-13 Seiko Epson Corp ネットワーク管理システム
US7006530B2 (en) * 2000-12-22 2006-02-28 Wi-Lan, Inc. Method and system for adaptively obtaining bandwidth allocation requests
US7245634B2 (en) * 2000-09-27 2007-07-17 Yen Robert C Wireless internet access with enhanced bandwidth capabilities
KR100547851B1 (ko) * 1999-12-29 2006-02-01 삼성전자주식회사 부호분할 다중접속 시스템에서 데이터 전송 방법
US6721267B2 (en) * 2000-08-01 2004-04-13 Motorola, Inc. Time and bandwidth scalable slot format for mobile data system
KR100525383B1 (ko) * 2000-10-30 2005-11-02 엘지전자 주식회사 이동통신 시스템의 방송 메시지 전송 방법
US6804528B1 (en) * 2000-11-03 2004-10-12 Lucent Technologies, Inc. Apparatus and method for use in the multicast of traffic data in wireless multiple access communications systems
US6930981B2 (en) * 2000-12-06 2005-08-16 Lucent Technologies Inc. Method for data rate selection in a wireless communication system
GB2396275B (en) 2002-12-09 2006-03-15 Ipwireless Inc Support of plural chip rates in a CDMA system
KR100970725B1 (ko) * 2003-09-17 2010-07-16 삼성전자주식회사 주파수 서브 밴드 할당방법 및 관리장치
US20070091922A1 (en) * 2005-10-21 2007-04-26 Steven Elliot Method and apparatus for adaptive bandwidth control with a bandwidth guarantee
US7885215B2 (en) * 2005-11-10 2011-02-08 Research In Motion Limited Method and apparatus for allocating communication resources to communicate data in a radio communication system

Patent Citations (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7672674B2 (en) * 1988-08-04 2010-03-02 Broadcom Corporation Remote radio data communication system with data rate switching
US5446739A (en) * 1993-01-06 1995-08-29 Kabushiki Kaisha Toshiba Radio communication system
US5371734A (en) * 1993-01-29 1994-12-06 Digital Ocean, Inc. Medium access control protocol for wireless network
US6018528A (en) * 1994-04-28 2000-01-25 At&T Corp System and method for optimizing spectral efficiency using time-frequency-code slicing
USRE38808E1 (en) * 1994-12-23 2005-10-04 Itt Manufacturing Enterprises, Inc. Cellular positioning system (CPS)
US5974042A (en) * 1997-02-28 1999-10-26 Motorola, Inc. Service detection circuit and method
US6115390A (en) * 1997-10-14 2000-09-05 Lucent Technologies, Inc. Bandwidth reservation and collision resolution method for multiple access communication networks where remote hosts send reservation requests to a base station for randomly chosen minislots
US6088578A (en) * 1998-03-26 2000-07-11 Nortel Networks Corporation Burst request method and apparatus for CDMA high speed data
US6438155B1 (en) * 1998-07-13 2002-08-20 Hewlett-Packard Company Decoding chip streams
US6370160B1 (en) * 1998-12-29 2002-04-09 Thomson Licensing S. A. Base to handset epoch synchronization in multi-line wireless telephone
US6563859B1 (en) * 1999-03-01 2003-05-13 Fujitsu Limited Receiver and receiving method in multi-carrier spread-spectrum communications
US6885691B1 (en) * 1999-08-02 2005-04-26 Lg Information & Communications, Ltd. Scrambling codes and channelization codes for multiple chip rate signals in CDMA cellular mobile radio communication system
US7089008B1 (en) * 1999-08-06 2006-08-08 Nokia Corporation Inter-system handover
US6996162B1 (en) * 1999-10-05 2006-02-07 Texas Instruments Incorporated Correlation using only selected chip position samples in a wireless communication system
US6741577B1 (en) * 1999-11-29 2004-05-25 Koninklijke Philips Electronics N.V. Inter-frequency handover in wireless CDMA systems
US7012908B2 (en) * 2000-09-05 2006-03-14 Hitachi Kokusai Electric Inc. CDMA base transceiver system
US7327780B2 (en) * 2001-03-14 2008-02-05 Mercury Computer Systems, Inc. Wireless communications systems and methods for multiple operating system multiple user detection
US7099375B2 (en) * 2001-07-02 2006-08-29 Ipwireless, Inc. Chip rate invariant detector
US7123942B2 (en) * 2001-07-25 2006-10-17 Nortel Networks Limited Radio station with closed-loop transmission diversity, and process for controlling transmission from such a station
US6760365B2 (en) * 2001-10-11 2004-07-06 Interdigital Technology Corporation Acquisition circuit for low chip rate option for mobile telecommunication system
US7200124B2 (en) * 2001-11-17 2007-04-03 Samsung Electronics Co., Ltd. Signal measurement apparatus and method for handover in a mobile communication system
US7894802B2 (en) * 2001-12-21 2011-02-22 Siemens Aktiengesellschaft Method for carrying out the network-side recognition of specific capabilities of subscriber stations in a communications system
US20050075125A1 (en) * 2002-01-21 2005-04-07 Bada Anna Marina Method and mobile station to perform the initial cell search in time slotted systems
US7103310B2 (en) * 2002-05-30 2006-09-05 Nortel Networks Limited Method of restricting the use of a radio terminal and an associated restriction device
US7400894B2 (en) * 2002-10-28 2008-07-15 Siemens Aktiengesellschaft Method for decentralized synchronization in a self-organizing radio communication system
US7362829B2 (en) * 2003-07-18 2008-04-22 Broadcom Corporation Multi-band single-carrier modulation
US20050201319A1 (en) * 2004-02-17 2005-09-15 Samsung Electronics Co., Ltd. Method for transmission of ACK/NACK for uplink enhancement in a TDD mobile communication system
US20070081489A1 (en) * 2005-10-10 2007-04-12 Ipwireless, Inc. Cellular communication system and method for coexistence of dissimilar systems
US20070104085A1 (en) * 2005-10-27 2007-05-10 Qualcomm Incorporated Varying scrambling/ovsf codes within a td-cdma slot to overcome jamming effect by a dominant interferer

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101485118A (zh) * 2006-07-07 2009-07-15 艾利森电话股份有限公司 共存网络的资源分配
US20090207815A1 (en) * 2006-07-07 2009-08-20 Telefonaktiebolaget Lm Ericsson (Publ) Resource allocation for co-existing networks
US9236938B2 (en) * 2006-07-07 2016-01-12 Telefonaktiebolaget L M Ericsson (Publ) Resource allocation for co-existing networks
US20140192712A1 (en) * 2013-01-09 2014-07-10 Qualcomm Incorporated Methods and apparatus for controlling access points coupled to a common power source
US9019895B2 (en) * 2013-01-09 2015-04-28 Qualcomm Incorporated Methods and apparatus for controlling access points coupled to a common power source

Also Published As

Publication number Publication date
JP2011024267A (ja) 2011-02-03
GB2396275A (en) 2004-06-16
CN102624443B (zh) 2018-01-30
AU2003292397A8 (en) 2004-06-30
US20110299507A1 (en) 2011-12-08
GB0228613D0 (en) 2003-01-15
US9094095B2 (en) 2015-07-28
WO2004054303A2 (en) 2004-06-24
KR101004053B1 (ko) 2010-12-31
AU2003292397A1 (en) 2004-06-30
EP1574100B1 (en) 2019-10-30
JP5601967B2 (ja) 2014-10-08
KR101061089B1 (ko) 2011-09-01
JP2006509451A (ja) 2006-03-16
GB2396275B (en) 2006-03-15
CN1723636A (zh) 2006-01-18
WO2004054303A3 (en) 2005-02-10
EP1574100A2 (en) 2005-09-14
CN102624443A (zh) 2012-08-01
KR20050085405A (ko) 2005-08-29
US20110158221A1 (en) 2011-06-30
KR20100081357A (ko) 2010-07-14

Similar Documents

Publication Publication Date Title
US9094095B2 (en) Support of plural bandwidths in a telecommunications system
US6625132B1 (en) Idle intersystem roaming determination and system reselection in a CDMA wireless communication system
US8184596B2 (en) Resource allocation and network sharing between a multiple of 3G-service providers
US6594242B1 (en) Broadcasting of two generation cellular system control channel information over a three generation control channel to support roaming and handover to two generation cellular networks
US5991627A (en) Control of handover and transmission power control of mobile station in a mobile telecommunications system
US7349373B2 (en) Apparatus and method for determining soft or softer handoff in mobile communication system
US6570861B1 (en) Method and apparatus for assigning use of a radio frequency communication resource
WO2001050807A1 (en) Channel assignment based on service type and user location in a cellular communication system with multiple frequency reuse groups
JP2006514519A (ja) 隣接セルサーチウィンドウの拡張を行うためのシステム及び方法
JPH11513857A (ja) 通信システムにおける時間分散を補償するための方法
US8614964B1 (en) Specification of forward-link rate control based on neighbor load
US9775118B2 (en) Offset to data rate control based on transmission power in neighbor sector
EP1698187A2 (en) Cell selection on transitioning from dedicated mode in wireless communications devices
CN1638350B (zh) 用于在无线电信系统中控制资源的方法、系统和计算机程序
KR100824230B1 (ko) 셀룰러 통신 시스템에서 셀 선택을 제어하기 위한 방법 및장치
US8554236B2 (en) Method for transmitting data and transmitter
KR20060056212A (ko) 직교 주파수 다중 접속 방식의 무선 통신 방법 및 시스템
MXPA98003048A (en) Method for registering system and reselling celu

Legal Events

Date Code Title Description
AS Assignment

Owner name: IPWIRELESS, INC., CALIFORNIA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:BEALE, MARTIN W.;REEL/FRAME:016870/0649

Effective date: 20050602

AS Assignment

Owner name: SOLECTRON CORPORATION,CALIFORNIA

Free format text: SECURITY INTEREST;ASSIGNOR:IPWIRELESS, INC.;REEL/FRAME:017144/0440

Effective date: 20051025

Owner name: SOLECTRON CORPORATION, CALIFORNIA

Free format text: SECURITY INTEREST;ASSIGNOR:IPWIRELESS, INC.;REEL/FRAME:017144/0440

Effective date: 20051025

AS Assignment

Owner name: NORTHROP GRUMMAN INFORMATION TECHNOLOGY, INC., CAL

Free format text: SECURITY AGREEMENT;ASSIGNORS:IPWIRELESS, INC.;IPWIRELESS U.K. LIMITED;IPW PARENT HOLDINGS INC.;AND OTHERS;REEL/FRAME:022126/0215

Effective date: 20081224

Owner name: NORTHROP GRUMMAN INFORMATION TECHNOLOGY, INC.,CALI

Free format text: SECURITY AGREEMENT;ASSIGNORS:IPWIRELESS, INC.;IPWIRELESS U.K. LIMITED;IPW PARENT HOLDINGS INC.;AND OTHERS;REEL/FRAME:022126/0215

Effective date: 20081224

AS Assignment

Owner name: IPWIRELESS, INC., CALIFORNIA

Free format text: RELEASE BY SECURED PARTY;ASSIGNOR:FLEXTRONICS CORPORATION (FORMALLY KNOWN AS SOLECTRON CORPORATION);REEL/FRAME:022137/0693

Effective date: 20081219

Owner name: IPWIRELESS, INC.,CALIFORNIA

Free format text: RELEASE BY SECURED PARTY;ASSIGNOR:FLEXTRONICS CORPORATION (FORMALLY KNOWN AS SOLECTRON CORPORATION);REEL/FRAME:022137/0693

Effective date: 20081219

AS Assignment

Owner name: NORTHROP GRUMMAN INFORMATION TECHNOLOGY, INC. NOW

Free format text: AMENDED AND RESTATED PATENT SECURITY AGREEEMENT;ASSIGNORS:IPWIRELESS, INC.;IPWIRELESS U.K. LIMITED;IPW HOLDINGS, INC.;AND OTHERS;REEL/FRAME:024233/0065

Effective date: 20091103

AS Assignment

Owner name: IPWIRELESS, INC.,CALIFORNIA

Free format text: RELEASE BY SECURED PARTY;ASSIGNOR:NORTHROP GRUMMAN SYSTEMS CORPORATION (SUCCESSOR BY MERGER TO NORTHROP GRUMMAN INFORMATION TECHNOLOGY, INC.);REEL/FRAME:024305/0231

Effective date: 20100423

Owner name: WIRELESS TECHNOLOGY SOLUTIONS LLC,NEW YORK

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:IP WIRELESS, INC.;REEL/FRAME:024305/0492

Effective date: 20100423

Owner name: WIRELESS TECHNOLOGY SOLUTIONS LLC, NEW YORK

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:IP WIRELESS, INC.;REEL/FRAME:024305/0492

Effective date: 20100423

Owner name: IPWIRELESS, INC., CALIFORNIA

Free format text: RELEASE BY SECURED PARTY;ASSIGNOR:NORTHROP GRUMMAN SYSTEMS CORPORATION (SUCCESSOR BY MERGER TO NORTHROP GRUMMAN INFORMATION TECHNOLOGY, INC.);REEL/FRAME:024305/0231

Effective date: 20100423

AS Assignment

Owner name: IPWIRELESS, INC., CALIFORNIA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:WIRELESS TECHNOLOGY SOLUTIONS LLC;REEL/FRAME:027910/0649

Effective date: 20120301

AS Assignment

Owner name: NVIDIA CORPORATION, CALIFORNIA

Free format text: PATENT PURCHASE AGREEMENT;ASSIGNORS:IP WIRELESS, INC.;VC WORLDWIDE LTD.;REEL/FRAME:028260/0218

Effective date: 20120427

STCB Information on status: application discontinuation

Free format text: ABANDONED -- AFTER EXAMINER'S ANSWER OR BOARD OF APPEALS DECISION