WO2004080006A2 - Amelioration de liaison inversee pour l'amrc 2000 revision d - Google Patents

Amelioration de liaison inversee pour l'amrc 2000 revision d Download PDF

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Publication number
WO2004080006A2
WO2004080006A2 PCT/IB2004/001231 IB2004001231W WO2004080006A2 WO 2004080006 A2 WO2004080006 A2 WO 2004080006A2 IB 2004001231 W IB2004001231 W IB 2004001231W WO 2004080006 A2 WO2004080006 A2 WO 2004080006A2
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WO
WIPO (PCT)
Prior art keywords
transmission rate
transmission
rate
bit
rcb
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PCT/IB2004/001231
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English (en)
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WO2004080006A3 (fr
Inventor
Mo-Han Fong
Jun Li
Ashvin H. Chheda
Sophie Vrzic
Hang Zhang
Ali Iraqi
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Nortel Networks Limited
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Application filed by Nortel Networks Limited filed Critical Nortel Networks Limited
Priority to CN200480012303XA priority Critical patent/CN101702960B/zh
Publication of WO2004080006A2 publication Critical patent/WO2004080006A2/fr
Publication of WO2004080006A3 publication Critical patent/WO2004080006A3/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0025—Transmission of mode-switching indication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/06—TPC algorithms
    • H04W52/12—Outer and inner loops
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/06—TPC algorithms
    • H04W52/16—Deriving transmission power values from another channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/28—TPC being performed according to specific parameters using user profile, e.g. mobile speed, priority or network state, e.g. standby, idle or non transmission
    • H04W52/286—TPC being performed according to specific parameters using user profile, e.g. mobile speed, priority or network state, e.g. standby, idle or non transmission during data packet transmission, e.g. high speed packet access [HSPA]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/38—TPC being performed in particular situations
    • H04W52/48—TPC being performed in particular situations during retransmission after error or non-acknowledgment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/38—TPC being performed in particular situations
    • H04W52/50—TPC being performed in particular situations at the moment of starting communication in a multiple access environment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
    • H04L1/0003—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/18—Negotiating wireless communication parameters
    • H04W28/22—Negotiating communication rate

Definitions

  • the present invention relates to packet data networks and, more particularly, the present invention relates to reverse link scheduling in the packet data networks.
  • Wireless communication service providers face some difficult challenges as the various networks are increasingly modified to work together to provide seamless end-to-end call connectivity across the various platforms.
  • Ever- increasing residential dial-up subscribers demand available modem (or ISDN) ports, or threaten to take their business elsewhere.
  • Internet service providers are deploying a large number of complex, port-dense network access servers (NASs) to handle thousands of individual dial-up connections.
  • NASs network access servers
  • small and large, as well as private and public, wireless data networks are being created to seamlessly interact with large wire line networks to enable users to establish point-to-point connections independent of terminal type and location.
  • voice networks have paved the way for the creation of data networks as users loaded the voice networks trying to transmit data, including streaming data (video and audio).
  • PSTNs Public Switched Telephone Networks
  • packet data networks including various versions of the Internet.
  • the wireless domain has had a parallel history.
  • Initial voice networks including Advanced Mobile Phone Service (AMPS), Time Division Multiple Access (TDMA), including North American TDMA and Global System for Mobile Communications (GSM) networks, were used to conduct data in a limited capacity. These networks are being replaced, however, by newer wireless data-only or data-centric networks, as well as mixed data and voice networks.
  • AMPS Advanced Mobile Phone Service
  • TDMA Time Division Multiple Access
  • GSM Global System for Mobile Communications
  • the structure and operation of wireless communication systems are generally known. Examples of such wireless communication systems include cellular systems and wireless local area networks, among others.
  • Equipment that is deployed in these communication systems is typically built to support standardized operations, i.e., operating standards. These operating standards prescribe particular carrier frequencies, modulation types, baud rates, physical layer frame structures, medium access control (MAC) layer operations, link layer operations, signaling protocols, etc. By complying with these operating standards, equipment interoperability is achieved.
  • operating standards prescribe particular carrier frequencies, modulation types, baud rates,
  • a regulatory body typically licenses a frequency spectrum for a corresponding geographic area (service area) that is used by a licensed system operator to provide wireless service within the service area.
  • the system operator Based upon the licensed spectrum and the operating standards employed for the service area, the system operator deploys a plurality of carrier frequencies (channels) within the frequency spectrum that support the subscriber units within the service area. Typically, these channels are equally spaced across the licensed spectrum. The separation between adjacent carriers is defined by the operating standards and is selected to maximize the capacity supported within the licensed spectrum without excessive interference. In most cases, severe limitations are placed upon the amount of co- channel and adjacent channel interference that may be caused by transmissions on a particular channel. In cellular systems, a plurality of base stations is distributed across the service area.
  • Each base station services wireless communications within a respective cell.
  • Each cell may be further subdivided into a plurality of sectors.
  • each base station supports forward link communications (from the base station to subscriber units) on a first set of carrier frequencies, and reverse link communications (from subscriber units to the base station) on a second set of carrier frequencies.
  • the first set and second set of carrier frequencies supported by the base station are a subset of all of the carriers within the licensed frequency spectrum.
  • carrier frequencies are reused so that interference between base stations using the same carrier frequencies is minimized and system capacity is increased.
  • base stations using the same carrier frequencies are geographically separated so that minimal interference results.
  • MSCs mobile station controllers
  • BSCs base station controllers
  • BTSs base station transceiver sets
  • GSM Global System for Mobile communications
  • CDMA Code Division Multiple Access
  • Extensive infrastructures e.g., ANSI-41 or MAP -based networks
  • ANSI-41 or MAP -based networks exist in the cellular wireless networks for tracking mobility, distributing subscriber profiles, and authenticating physical devices.
  • the MSC communicates with the BSC to prompt the BTS to generate paging signals to a specified mobile station within a defined service area typically known as a cell or sector (a cell portion).
  • the mobile station upon receiving the page request, responds to indicate that it is present and available to accept an incoming call.
  • the BSC upon receiving a page response from the mobile station, communicates with the MSC to advise it of the same.
  • the call is then routed through the BSC to the mobile station as the call setup is completed and the communication link is created.
  • a mobile station generates call setup signals that are processed by various network elements in a synchronized manner to authenticate the user as a part of placing the call.
  • next generation of cellular networks presently being developed is being modified from traditional systems to create the ability for mobile stations to receive and transmit data in a manner that provides greatly increased throughput rates.
  • mobile stations often referred to as mobile terminals or access terminals
  • mobile terminals or access terminals are being developed to enable a user to surf the web or send and receive e-mail messages through the wireless channel, as well as to be able to receive continuous bit rate data, including so called "streaming data”.
  • streaming data continuous bit rate data
  • cdma2000 One example of a system that is presently being deployed with voice and data capabilities is the cdma2000 network.
  • the cdma2000 network is developed from
  • the lxRTT standard defines CDMA operation for data transmissions.
  • IS-95 while designed primarily for voice services, can support simple data type applications, such as short message service (SMS). It can also support wireless Internet access through circuit switched data mode, with the data rate limited to 14.4 kb/s. However, it is unable to provide a majority of multi-media services users have come to expect with typical home-based broadband connections to the Internet.
  • lxRTT improves upon the design of IS-95. Voice capacity is approximately doubled and, in addition, lxRTT supports packet-based access to the Internet. The data rate in lxRTT is limited to 614.4 kb/s. This is the maximum available rate in theory to one user, though in practice a user will never get such a rate.
  • lxRTT is backwards compatible to IS-95.
  • One data-only network that is being developed is defined by the lxEV-DO standard, also known as IS-856.
  • the lxEV-DO standard defines a time burst system utilizing a 1.25 MHz carrier that is set at a carrier frequency that is adjacent to the frequencies used by the voice networks. In one particular network, a 1.67 millisecond (mS) burst is used for the forward link in a lxEV-DO network.
  • mS millisecond
  • Typical lxEV-DO networks include a Packet Data Service Node (PDSN) for performing routing and switching for a data packet or data packet stream, an Access Network Controller (ANC) that establishes and manages the wireless communication link with the mobile terminal, and a Packet Control Function (PCF) that is largely an interface device for converting signals between the packet domain and a wireless network that will be used for the communication link.
  • PDSN Packet Data Service Node
  • ANC Access Network Controller
  • PCF Packet Control Function
  • the lxEV-DO network is optimized for forward link data applications.
  • the next generation of lxRTT networks that are being deployed can communicate with voice and data networks but do not process data as efficiently as the networks formed according to the lxEV-DO standard. Newer networks are also being designed and have evolved from the lxEV-DO standard, including IxEV-DV (IS-2000 Release C), which is for transmitting data as well as voice.
  • IxEV-DV IS-2000 Release C
  • the first technology is lxEV-DO as mentioned above, which is geared towards data only application and is not backwards compatible to lxRTT.
  • This solution is designed to offer a user a peak throughput of 2.45 Mb/s in the forward link.
  • the second technology is an evolution of lxRTT, and is also known as cdma2000 Release C, or IxEV-DV.
  • This technology is backwards compatible to lxRTT, and as such can offer voice and data services to the users.
  • the peak rate offered by this second technology is 3.09 Mb/s.
  • Multiple access modulation techniques are some of the most efficient techniques for utilizing the RF spectrum. Examples of such modulation techniques include TDMA, frequency division multiple access and CDMA.
  • CDMA modulation employs a spread spectrum technique for the transmission of information.
  • a spread spectrum system uses a modulation technique that spreads a transmitted signal over a wide frequency band. This frequency band is typically substantially wider than the minimum bandwidth required for transmitting the signal.
  • the spread spectrum technique is accomplished by modulating each baseband data signal to be transmitted with a unique wideband spreading code. Using this technique, a signal having the bandwidth of only a few kilohertz can be spread over a bandwidth of more than a megahertz.
  • CDMA networks employ a system in which all transmissions occur in the same frequency band, it is well known that it is important to transmit at the lowest possible power that allows for the delivery of a communication signal at a certain level of accuracy or grade of service criteria.
  • the reason that it is important for base stations and mobile stations to transmit with a minimal level of power on the forward and reverse links is that each transmission adds to the noise level for all other receivers.
  • the per user power on the forward link is minimized there is more power available at the sector power amplifier for other users, thereby increasing the capacity of the system.
  • the reverse link if less power is used, apart from the interference benefits mentioned above, the mobile station can extend its battery life and/or range of transmission.
  • One cost of reducing transmission power levels is that the signal quality degrades with the lower power level.
  • Allowing signal quality to degrade will reduce transmission power levels, which reduces noise and interference to other users. However, this is unacceptable from a user's perspective when the signal quality degrades past a certain point. Improving signal quality beyond a certain point, on the other hand, does little to improve the user's perception of quality, but would greatly increase transmission power levels, which, in turn, would increase noise and interference to other users, causing their required power levels to increase in response. Ultimately, system throughput capacity is degraded in this scenario. Thus, it is desirable to control transmit power levels above the background noise to maintain a desired signal quality and to avoid unnecessary interference with other users.
  • the greater the number of users in a wireless network the overall noise and interference to other users is greater.
  • a mobile station transmitting on the reverse link to the base station must, at a minimum, transmit at a power level sufficient to overcome thermal noise and background interference (noise) for the communication signals to be received and demodulated by the base station.
  • the overall noise level increases thereby increasing a required transmission power level of the mobile station for its reverse link communication signal to successfully reach the base station.
  • This reverse link loading is also known as the rise over thermal (RoT) and is a metric or measurement that represents the total received power in the frequency band over the thermal noise floor.
  • RoT rise over thermal
  • the order in which users are allowed to access the network resources for a communication becomes a significant aspect of network design.
  • noise would increase as multiple users attempt to communicate at the same time, limiting each of the users' achievable data rate. If a system is implemented in which users are not scheduled in their attempt to communicate over a channel, then some users may not relinquish resources thereby not allowing others to communicate (or at least communicate on a timely basis).
  • scheduling algorithms are implemented in communication networks for allowing a more fair use of network resources.
  • Scheduling also is important to achieve network efficiency and, for example, to maximize network throughput.
  • a scheduler provides access to maximize network throughput while also considering quality of service considerations, such as the type of service level agreement a user has or even the identity of the user.
  • a communication controller schedules communications by the various terminals in the network.
  • a base station controller typically performs the task of scheduling reverse link communications from the mobile stations to the BTSs. While a BTS could easily schedule reverse link communications in its cell, the BTS cannot schedule reverse link communications in adjacent cells serviced by other BTSs. For a mobile station that is in hand-off, meaning that it is communicating with two or more BTSs as it transitions from one cell to another (communicating with one BTS to communicating with another BTS), the scheduling becomes more difficult. Accordingly, most wireless networks are developed to allow the base station controller (BSC) to perform scheduling among the various BTSs because it is able to coordinate the communications there between.
  • BSC base station controller
  • a base station schedules a reverse link transmission from the mobile station, and more particularly a data packet transmission from a mobile data terminal, it specifies a data rate and a corresponding power level.
  • the data rate and power level are typically related.
  • the base station as a part of scheduling the reverse link communication, must determine an appropriate power level and, hence, rate to overcome thermal noise as well as overall noise from all communications.
  • the received signal power level must be able to sustain the data communication given the level of RoT in the system for the scheduling time instant.
  • the result of granting the transmission of the user must not overcome a specified RoT outage threshold in the system.
  • This threshold may increase the probability that other users, such as voice users, in the sector may not be able to close the reverse link reliably even when transmitting at maximum allowed power.
  • One problem with scheduling algorithms that are performed by a base station controller is that the scheduling algorithm may not respond quickly to the bursty nature of packet data transmission. For some communications, a slowly responding scheduling algorithm may be unacceptable because the packet data cannot be scheduled and transmitted fast enough to satisfy its throughput requirements since mobile data terminal stations using packet data resources maintain an always-on connection but tend to use network resources in a burst of packet data. There is a need, therefore, for a method and apparatus to efficiently provide dynamic scheduling of reverse link packet data transmission.
  • a method and an apparatus of the present invention allows for dynamic resource management in a packet data network to support dynamic scheduling of reverse link packet data transmissions to efficiently support bursty packet data traffic on the reverse link wherein the reverse link transmission of each mobile station is scheduled by the base station infrastructure to support dynamic scheduling operation by the base station.
  • the various embodiments of the invention initiate signaling and control information on the forward link and the reverse link to support the dynamic scheduling of the reverse link transmission. Dynamic scheduling of the reverse link transmission ensures efficient over-the-air resource multiplexing among bursty packet data users.
  • One method of the present invention includes receiving a PERSISTENCE bit with a transmission grant signal transmitted by a base station wherein the transmission grant signal includes a specified transmission rate.
  • the mobile station Based on a logic state of the PERSISTENCE bit, the mobile station transmits sub-packets of data packets at one of an incrementally adjusted transmission rate or an autonomous transmission rate.
  • the PERSISTENCE bit When the PERSISTENCE bit is set to a first logic state (logic zero in one embodiment of the invention), the sub-packets are transmitted at the autonomous transmission rate. If the PERSISTENCE bit is a logic 0, however, the MS may or may not, monitors the RCB for further rate adjustment information. Even if the MS looks at the RCB, the base rate will be no higher than the autonomous rate (instead of the assigned rate).
  • the autonomous transmission rate is the lowest transmission rate the mobile station is allowed to transmit without authorization from the base station.
  • the autonomous transmission rate is set during mobile station initialization but may be adjusted by the base station in overhead signaling messages.
  • the sub-packets are transmitted at an incrementally adjusted transmission rate wherein the incrementally adjusted transmission rate is the specified transmission rate incremented or decremented by a specified value.
  • a rate control bit (RCB) is transmitted by the base station on the forward link and is set to a value of one of a first value, a second value, or a third value, a+1, a 0, or a -lin the described embodiment of the present invention.
  • the mobile station increments the specified transmission rate by the specified value to produce an incrementally adjusted transmission rate. Conversely, when the RCB has is a third value of (-1 in the described embodiment), the mobile station decrements the incrementally adjusted transmission rate. An RCB second value of (0 in the described embodiment) instructs the mobile station not to adjust the transmission rate.
  • An alternate embodiment of the present invention includes an ALL_ACID_IND bit that is transmitted with the PERSISTENCE bit in the transmission grant signal in the described embodiment of the invention.
  • the ALL_ACID_1ND bit is often also referred to as an ALL_ARQ bit.
  • the PERSISTENCE bit functions as previously discussed, while the ALL_ACID_IND bit instructs the mobile station to adjust the incrementally adjusted transmission rate for either a single Hybrid Automatic Repeat Request (H-ARQ) channel or all H-ARQ channels.
  • H-ARQ Hybrid Automatic Repeat Request
  • the ALL_ACID_IND bit is in the first logic state (logic zero in the described embodiment), the mobile station adjusts the transmission rate only for the current H-ARQ channel.
  • the mobile station adjusts the transmission rate for all H-ARQ channels.
  • the specified transmission rate is adjusted by a specified value based on the value of the RCB wherein the RCB first value (+1 in the described embodiment) prompts the mobile station to increment specified transmission rate, while the RCB third value (-1 in the described embodiment)prompts the mobile station to decrement the specified transmission rate.
  • the RCB second value (0 in the described embodiment) instructs the mobile station to not adjust the transmission rate.
  • An alternate embodiment of the present invention provides for controlling the reverse link incremental power in the packet data network.
  • the mobile station uses the RCB in conjunction with a negative acknowledgement (NAK) to adjust a transmission- to-pilot ratio.
  • NAK negative acknowledgement
  • the transmission-to-pilot ratio is a fixed ratio of the packet data channel power to the pilot channel power.
  • the mobile station monitors the RCB for the first, second, and third values (+1, 0, -1, respectively, in the described embodiment), in order to change the transmission rate of subsequent sub-packets of the same data packet.
  • the transmission-to-pilot ratio is increased by a defined value.
  • the mobile station does not adjust the transmission-to-pilot ratio when the RCB is a second value (0 in the described embodiment).
  • the transmission-to-pilot ratio is decreased by the defined value when the RCB is a third value (-1 in the described embodiment).
  • Figure 1 is a functional block diagram of a communication network formed according to one embodiment of the present invention
  • Figure 2 is a functional block diagram of a mobile station according to one embodiment of the present invention
  • FIGS 3A and 3B illustrate graphs of traffic-to-pilot ratio adjustment according to one embodiment of the present invention
  • Figures 4A and 4B are diagrams of H-ARQ sequences for changing the transmission rate and traffic-to-pilot ratio according to one embodiment of the present invention. ;
  • FIGS 5A and 5B are diagrams of H-ARQ sequences for transmission rate adjustment according to one embodiment of the present invention.
  • Figures 6 A and 6B illustrate an alternate embodiment of the present invention
  • Figure 7 is a flowchart for a method of controlling reverse link incremental power in a packet data network according to one embodiment of the present invention
  • Figure 8 is a flowchart of a method for setting a reverse link transmission rate for a mobile station in a packet data network
  • Figure 9 is a flowchart of a method for setting a reverse link transmission rate for a mobile station in a packet data network.
  • FIG. 1 is a functional block diagram of a communication network formed according to one embodiment of the present invention.
  • communication network 10 includes mobile stations (MS) that are coupled to operatively communicate over a voice or a data packet network.
  • MS mobile stations
  • PSTN Public Switched Telephone Network
  • a mobile station, MS 22, is engaged in a data call (data packet session) according to IxEV-DV protocols over a wireless communication link, shown generally at 26.
  • MS 30 is engaged in a voice session over a wireless communication link, shown generally at 34, with BTS 38 according to IxEV-DV protocols.
  • BTS 38 is generally coupled to communicate with ANC/BSC 42 (or with packet control function cards there within).
  • ANC access network controllers
  • BSC base station controllers
  • PCF Packet Control Function
  • ANC/BSC 42 wireless network cards are included to facilitate communications with mobile stations of differing protocols and types.
  • ANC/BSC 42 further includes a PCF 46 for communicating with MS 22 utilizing IxEV-DV protocols.
  • PCF 46 is processing data packets for IxEV-DV devices (such as MS 22 and Ms 30) and is also coupled directly to a Packet Data Serving Node (PDSN) 54 for routing packet data to packet data network 18.
  • PDSN Packet Data Serving Node
  • MS 22 that communicates over wireless communication link 26 according to IxEV-DV communication protocols, communicates with BTS 38 and with PCF 46 formed within ANC/BSC 42.
  • PCF 46 may readily be formed as a distinct device rather than within a rack of ANC/BSC 42.
  • PCF 46 may communicate with MS 22 through distinct radio equipment and, thus, through a BTS other than BTS 38 as shown herein.
  • ANC/BSC 42 is coupled to a Mobile Switching Center
  • MSC 50 for routing voice calls from MS 30 to PSTN 14 utilizing IxEV-DV protocols. Accordingly, calls routed through MSC 50 are directed either to other MSCs (not shown herein) or to external networks by way of PSTN 14.
  • ANC/BSC 42 dynamically schedules reverse link transmissions for MS 22 and MS 30.
  • ANC/BSC 42 monitors the RF environment and sets one of the PERSISTENCE bit and the ALL_ACH>_ ⁇ ND bit to incrementally adjust the reverse link specified transmission rate or to instruct MS 22 and/or MS 30 to fall back to the autonomous rate.
  • ANC/BSC 42 adjusts the traffic-to- pilot ratio to optimize the reverse link incremental power in the sectors served by ANC/BSC 42. Under the current standards, transmission rates are actually specified by a base station in terms of a traffic to pilot power ratio wherein the mobile station translates such specified power ration to a corresponding transmission rate.
  • FIG. 2 is a functional block diagram of a mobile station according to one embodiment of the present invention.
  • Mobile station 70 comprises transceiver circuitry 74, transmission logic 78 and a processor 82.
  • Transceiver circuitry 74 includes transmitter and receiver circuitry, including modulation/demodulation circuitry, for transmitting and receiving voice and/or packet data.
  • Processor 82 including a memory for storing operational logic and for temporary data storage, sends data to and receives data from transceiver circuitry 74. Additionally, processor 82 adjusts the modulation type and transmitted power of mobile station 70 according to control information received from a base station (not shown).
  • transceiver circuitry 74 can operate at one of three modulation formats in the IxEV-DV protocols: Quadrature Phase Shift Keying (QPSK), 8-ary Phase Shift Keying (8-PSK), and 16-Quadrature Amplitude Modulation (16-QAM).
  • QPSK Quadrature Phase Shift Keying
  • 8-PSK 8-ary Phase Shift Keying
  • 16-QAM 16-Quadrature Amplitude Modulation
  • the choice of modulation format and coding are varied dynamically according to the RF environmental conditions.
  • This Adaptive Coding and Modulation (ACM) maximizes the use of the RF spectrum by optimizing the choice of modulation and coding rates.
  • ACM Adaptive Coding and Modulation
  • Transmission logic 78 adjusts reverse link transmissions, including the transmission rate and a traffic-to-pilot ratio according to one of a PERSISTENCE bit and an ALL_ACID_ ⁇ ND bit received over a forward packet data channel.
  • MS 70 is operable to adjust the transmission-to-pilot ratio of the packet data channel in relation to the reverse link pilot channel after a transmitted sub-packet of a data packet receives a negative acknowledge (NAK) from the BS.
  • Data packets are divided into sub-packets and transmitted sequentially with a delay period between each transmission in order to provide an ample window for receiving an ACK or NAK.
  • Sub-packets of a data packet are generated by turbo coding the data packet at a rate of 1/N, where N is an integer, and interleaving the coded data packet. The coded interleaved data packet is then divided into sub-packets wherein each sub-packet further receives parity bits for error detection.
  • Each sub-packet is identified with a sub- packet identification.
  • a first sub-packet carries the most important information about the data packet, so it is usually sent first. Thereafter, the remaining sub-packets can be sent if additional transmissions are needed. The additional transmissions of sub-packets are needed if the base station sends a NAK after transmission of the sub-packet indicating the BS could not decode the sub-packet.
  • the BS is operable to reconstruct an entire data packet from a combination of a sub-packet and the parity bits.
  • transmission logic 78 examines the RCB for the RCB value that indicates an adjustment of the transmission-to-pilot ratio.
  • the transmission logic prompts the processor to increment an incrementally adjusted transmission rate.
  • the incrementally adjusted transmission rate is the specified transmission rate received in the transmission grant signal adjusted by a defined value.
  • the RCB value is set to a second value (0 in the described embodiment).
  • the transmission logic prompts the processor to decrement the incrementally adjusted transmission rate by the defined value. In any of these cases, adjustments to the transmission to pilot ratio are made for subsequent transmissions of the sub-packets.
  • the transmission logic is operable to interpret a PERSISTENCE bit that is included with the transmission grant signal to indicate mobile station 70 should transmit at one of an autonomous transmission rate or the incrementally adjusted transmission rate based upon the logic state of the PERSISTENCE bit.
  • the autonomous transmission rate is the lowest transmission rate mobile station 70 is allowed to transmit without authorization from the base station.
  • the transmission grant signal includes a 4-bit rate field that defines the transmission rate for mobile station 70. Processor 82 decodes the rate field and prompts transceiver circuitry 74 accordingly.
  • Transmission logic 78 evaluates the PERSISTENCE bit logic state and prompts processor 82 to set the transceiver circuitry 74 transmission rate to transmit sub-packets of a second data packet at one of the autonomous transmission rate or the incrementally adjusted transmission rate.
  • Transmission logic 78 evaluates the logic state of the PERSISTENCE bit and prompts transceiver circuitry 74 via processor 82 to transmit at the autonomous transmission rate when the PERSISTENCE bit is a first logic state (logic zero in the described embodiment).
  • the transmission logic 78 further looks at the value of the RCB.
  • transmission logic 78 prompts processor 82 to increment the incrementally adjusted transmission rate by the specified value. Conversely, if the value of the RCB is the third value (-1 in the described embodiment), transmission logic 78 prompts processor 82 to decrement the incrementally adjusted transmission rate by the specified value. If the value of the RCB is the second value (0 in the described embodiment), then the incrementally adjusted fransmission rate is not adjusted. Adjustments to the transmission rate based upon the received RCB value occur for subsequent transmissions of a sub-packet portion as described in greater detail herein.
  • the transmission grant signal includes the PERSISTENCE bit and an ALL_ACID_IND bit.
  • transmission logic 78 prompts transceiver circuitry 74 via processor 82 to transmit sub-packets of the second data packet at the autonomous transmission rate.
  • the PERSISTENCE bit is in the second logic state (logic one in the described embodiment)
  • mobile station 70 transmits sub-packets at the incrementally adjusted transmission rate in the method as previously described.
  • logic 78 incrementally adjusts the transmission rate for either all H-ARQ'channels or only the current H-ARQ channel based on a logic state of the ALL_ACID_IND bit received from the BS.
  • transmission logic 78 prompts processor 82 to incrementally adjust the transmission rate for the current H-ARQ channel only. If the ALL_ACID_IND bit is in a second logic state (logic one in the described embodiment), however, transmission logic 78 prompts processor 82 to incrementally adjust the transmission rate for all H-ARQ channels.
  • the addition of the ALL_ACID_IND bit to the transmission grant channel allows mobile station 70 to transmit each H-ARQ channel at the highest transmission rate available according to current conditions of the RF environment.
  • Figures 3 A and 3B illustrate graphs of traffic-to-pilot ratio adjustment for the reverse link pilot channel according to one embodiment of the present invention.
  • a reverse link pilot channel is transmitted at a specified reverse link power level, as shown at 90.
  • a forward link power control channel controls the power of the reverse link pilot channel.
  • a packet data channel power shown as 94, is transmitted at a fixed ratio relative to the reverse link pilot channel.
  • the BS set the reverse link power according to the specified fransmission rate.
  • the traffic-to-pilot ratio is the ratio of the packet data channel power to the reverse link pilot channel power.
  • the MS adjusts the packet data channel power by adjusting the traffic-to-pilot ratio by monitoring and evaluating the value of the RCB.
  • the mobile station interprets the value of the RCB as a traffic-to- pilot ratio adjustment control signal instead of a fransmission rate adjustment control signal during re-transmissions of sub-packets of the same data packet.
  • the RCB value is the first value (+1 in the describe embodiment)
  • the mobile station increments the traffic-to-pilot ratio (reverse link), effectively boosting the packet data channel power.
  • the RCB value is the third value (-1 in the describe embodiment)
  • the mobile station decrements the traffic- to-pilot ratio.
  • the RCB third value (0 in the describe embodiment) indicates no change in the traffic-to-pilot ratio.
  • the RCB signal field is used to transmit one of a plurality of signals according to specified conditions.
  • the mobile station is operable to properly interpret and respond to the data within the RCB signal field.
  • Figure 3B illustrates a change in the traffic-to-pilot ratio.
  • the RCB first value (+1 in the describe embodiment) has caused an increase in the traffic- to-pilot (reverse link) ratio which effectively increases the packet data channel power, shown as 98, since the pilot channel power, shown as 90, does not change and the traffic-to-pilot ratio has increased from the previous level, shown as 94, to the increased level, shown as 98.
  • This embodiment of the present invention gives the base station the flexibility to manage the Rise-over-thermal (RoT) and the MS traffic-to-pilot ratio during re-transmission.
  • Figures 4 A and 4B are diagrams of H-ARQ sequences for changing the transmission rate and traffic-to-pilot ratio according to one embodiment of the present invention.
  • the MS divides data packets into sub-packets prior to transmission. Data packets are transmitted on three H-ARQ channels with the sub-packets of the same data packet transmitted on the same H-ARQ channel.
  • the H-ARQ sequences of Figures 4A and 4B illustrate the interleaving of sub-packets.
  • a first data packet, A is divided into sub- packets Al, A2, and A3.
  • a second data packet, B is divided into sub-packets Bl, B2, and B3, while a third data packet, C, is divided into sub-packets Cl, C2, and C3.
  • the first sub- packets of each data packet are transmitted first (Al, Bl, Cl) followed by the second sub- packets (A2, B2, C2) and third sub-packets (A3, B3, C3). All sub-packets are shown in Figures 4A and 4B to illustrate the embodiment of the present invention, although the sequence of sub-packets of a data packet terminates as soon as an ACK is received from the base station indicating the base station has successfully decoded the sub-packet.
  • the MS interprets an RCB bit as traffic-to-pilot adjustment signal for a subsequent sub-packet. If the MS receives an ACK for the first sub-packet Al from the base station indicating the base station did successfully decode the sub-packet, the MS interprets an RCB bit as fransmission rate setting signal for a subsequent sub-packet of the next data packet. The MS receives the NAK and thereafter interprets the RCB value as an indication to adjust the traffic-to-pilot ratio for the current H-ARQ channel.
  • the MS interprets the RCB first value (+1 in the describe embodiment) as a signal to increment the traffic-to-pilot ratio, while the RCB third value (-1 in the describe embodiment) indicates a decrement to the traffic-to-pilot ratio.
  • the RCB second value (0 in the describe embodiment) indicates no change in the traffic-to-pilot ratio.
  • FIGs 5 A and 5B are diagrams of H-ARQ sequences for transmission rate adjustment according to one embodiment of the present invention.
  • the logic state of the PERSISTENCE bit is used to set the transmission rate for a following packet to one of the autonomous transmission rate or the specified transmission rate.
  • the autonomous rate is a defined transmission rate assigned by the BS at MS initialization and is the lowest transmission rate the MS is allowed to use without authorization from the BS.
  • the specified transmission rate is the transmission rate set by the BS in the 4-bit rate field of the transmission grant signal.
  • the MS uses the 4-bit rate field to determine the transmission rate if the transmission rate in not set for an autonomous rate mode of operation.
  • the PERSISTENCE bit is a one-bit field in the transmission grant signal and is used to instruct the MS to monitor the RCB or instruct the MS to drop back to the autonomous transmission rate at the end of the current H-ARQ sequence.
  • the PERSISTENCE bit is set to the first logic state (logic zero in the describe embodiment) thereby prompting the mobile station to drop back to the autonomous mode after successfully delivering the sub-packet as indicated by a received ACK.
  • the MS transmits the H-ARQ sequences and then monitors transmissions from the BS for one of an acknowledge (ACK) signal or negative acknowledge (NAK) signal.
  • ACK acknowledge
  • NAK negative acknowledge
  • the PERSISTENCE bit set to a first logic state (logic zero in the described embodiment) in the grant rate channel indicates a switch to the autonomous transmission rate at the end of the current sub-packet sequence. If the MS receives a NAK after transmitting, the MS will not change the fransmission rate for the sequence of sub-packets of the same data packet so sub-packet A2 is transmitted at the previous transmission rate. When the ACK is received for sub-packet A2, ARQ1 falls back to the autonomous rate for the packets following the received ACK.
  • the BS acknowledges sub-packet Bl of data packet B so ARQ2 falls back to the autonomous transmission rate for all data packets that are transmitted after data packet B. After fall back, ARQ2 will continue to transmit at the autonomous rate, therefore the first sub-packets (El and FI) of data packet E and data packet F, respectively, are transmitted at the autonomous fransmission rate.
  • ARQ3 falls back to the autonomous transmission rate for the next data packet transmitted on ARQ3. If the PERSISTENCE bit is a logic 0, however, the MS may or may not, monitors the RCB for further rate adjustment information. Even if the MS looks at the RCB, the base rate will be no higher than the autonomous rate (instead of the assigned rate).
  • Figure 5B illustrates the incremental adjustment of the specified transmission rate when the PERSISTENCE bit is set to a second logic state (logic one in the described embodiment).
  • the MS is transmitting an H-ARQ sequence wherein the first sub-packet (Al) of data packet A is transmitted at the previously specified transmission rate. Because, in this example, sub-packet Al is negatively acknowledged (NAK) by the base station, the mobile station continues to transmit subsequent sub-packets of data packet A until a positive acknowledgement (ACK) is received. Once the ACK is received, the PERSISTENCE bit second logic state (logic one in one embodiment) prompts the MS to monitor the RCB for transmission rate adjustment.
  • NAK negative acknowledged
  • Each H-ARQ channel will monitor the RCB for that channel and adjust the specified fransmission rate as indicated by the value of RCB.
  • ARQ2 begins transmitting sub-packet Bl of data packet B while monitoring the RCB for ARQ2.
  • the RCB is a third value (-1 in the describe embodiment), instructing the mobile station to decrement a specified transmission rate by the defined value.
  • the defined increment and decrement values are established during mobile station initialization, but may be changed by the base station in forward link signaling messages.
  • the ARQ2 channel transmits the first sub- packet El of data packet E while monitoring the RCB for ARQ2.
  • the RCB first value (+1 in the describe embodiment) instructs the mobile station to increment the specified transmission rate by the defined value.
  • the inclusion of the PERSISTENCE bit in the grant rate channel allows the base station to dynamically increment or decrement the transmission rate to adapt to the changing RF environment, thereby maintaining a tighter control on RoT and background noise.
  • the RCB second value (0 in the describe embodiment) instructs the mobile station to maintain the specified transmission rate at the current transmission rate.
  • the described embodiment values of +1, -1 and 0 of the RCB maybe implemented in any manner consistent with forward link transmissions.
  • Figures 6 A and 6B illustrate an alternate embodiment of the present invention.
  • two bits are added to the grant rate channel, namely, the PERSISTENCE bit and an ALL_ACID_LND bit.
  • the ALL_ACID_IND bit instructs the mobile station to adjust the transmission rate for all H-ARQ sequences or only for the current H-ARQ sequence, depending on the logic state of the ALL_ACID_rND bit.
  • operation is based upon the ALL_ACID__IND bit set to logic one in the described embodiment, although one of average skill in the art recognizes an alternate logic scheme can be implemented to achieve identical results.
  • the first H-ARQ channel, ARQl receives an ACK from the base station for sub-packet Al of data packet A and begins to monitor the RCB for an ARQl transmission rate adjustment.
  • Sub-packets Bl and Cl of data packet B and data packet C, respectively, will be transmitted at the specified transmission rate until the RCB for H-ARQ channels ARQ2 and ARQ3 indicates the base station is requesting a change in the specified transmission rate.
  • the mobile station detects the RCB on the ARQl channel is the first value (+1 in the describe embodiment) indicating a request to increment the specified transmission rate.
  • the mobile station increments the ARQl specified transmission rate by the specified value.
  • the mobile station will only switch the specified fransmission rate for the H-ARQ channel only if the RCB for that channel indicates a change in the specified transmission rate.
  • ARQ2 transmits sub-packet El of data packet E at the specified transmission rate until the RCB, for ARQ2, is one of either the first or third values (+1 or -1, respectively in the describe embodiment).
  • ARQ3 channel transmits sub-packet Cl of data packet C and sub-packets FI and F2 of data packet F at the specified transmission rate.
  • Figure 6B illustrates the operation of H-ARQ sequences when the PERSISTENCE bit is in the second logic state and the ALL_ACID_IND bit is also in the second logic state.
  • the mobile station adjusts all H-ARQ sequences based on any H-ARQ channel RCB having one of the first value or the third value (+1 or -1, respectively, in the describe embodiment). For example, after transmitting sub-packet Al of data packet A, the mobile station receives an ACK indicating the base station successfully decoded the sub-packet and the mobile station continues to monitor the RCB for the transmission rate adjustment.
  • the mobile station When the mobile station detects the ARQl channel RCB at the first value (+1 in the describe embodiment), the mobile station increments the specified transmission rate by the defined value, producing the incrementally adjusted transmission rate. Since the ALL_ACID_IND bit is in the second logic state (logic one in the described embodiment), all H-ARQ channel transmission rates are incremented at the same time. Therefore, the incrementally adjusted transmission rate for ARQl channel is also applied to ARQ2 and ARQ3.
  • the mobile station transmits sub-packet Bl of data packet B, the ARQ2 transmission will be at the incrementally adjusted transmission rate. Thereafter, ARQ3 channel will transmit sub-packet Cl of data packet C at the incrementally adjusted transmission rate.
  • ALL_ACID_IND bit allows the mobile station to either increment a single H- ARQ channel or all H-ARQ channels based upon the current conditions in the RF environment. This dynamic adjustment of the specified transmission rate gives the base station greater flexibility in managing the packet data resources in its domain.
  • the assigned rates and incremental rate adjustments of the embodiments described herein represent a specified maximum rate at which a MS may transmit during a particular time slot.
  • the MS may not, however, have enough packets awaiting transmission to achieve the maximum rate or may not have enough power available to sustain the maximum transmission rate.
  • FIG. 7 is a flowchart for a method of controlling reverse link incremental power in a packet data network according to one embodiment of the present invention.
  • a mobile station receives a transmission grant signal wherein the transmission grant signal includes a transmission rate (step 200).
  • the transmission rate is defined in a 4-bit rate field in the transmission grant signal transmitted by the base station.
  • the mobile station transmits sub- packets of a data packet at the received transmission rate until an acknowledge (ACK) is received from the base station (step 204).
  • ACK acknowledge
  • the data packet is coded and interleaved before being divided into sub-packets. Each sub-packet further receives a plurality of parity bits to aid in error detection.
  • the ACK transmitted by the base station acknowledges successful decoding of the sub-packet and further signals the mobile station to transmit a next data packet.
  • the contents of a data packet may be recreated by decoding the contents of a successfully received sub-packet. If, however, an ACK is not received from the base station, the method includes examining the RCB when a negative acknowledge (NAK) is received for the data packet sub-packet (step 208). When a NAK is received for the sub-packet, the method provides for interpreting the RCB as an adjustment indicator for the fransmission-to-pilot ratio.
  • NAK negative acknowledge
  • the method adjusts the fransmission-to-pilot ratio for the data packet sub- packets based upon a value of the RCB (step 212). Thereafter, the fransmission-to-pilot ratio is increased by a defined value when the RCB is a first value (step 216). The defined value is defined during call setup when the mobile station first establishes communication with the base station. The fransmission-to-pilot ratio is not changed when the RCB is a second value (step 220). Alternatively, the transmission-to-pilot ratio is decreased by the defined value when the RCB is a third value (step 224). Subsequent sub-packets of the data packet are transmitted at the adjusted transmission-to-pilot ratio (reverse link pilot ratio) until the ACK is received from the base station (step 228).
  • the fransmission-to-pilot ratio is increased by a defined value when the RCB is a first value (step 216).
  • the defined value is defined during call setup when the mobile station first establishes communication with
  • Figure 8 is a flowchart of a method for setting a reverse link transmission rate for a mobile station in a packet data network.
  • a mobile station receives a transmission grant signal transmitted by a base station wherein the transmission grant signal includes a specified transmission rate (step 240).
  • the transmission grant signal includes a 4-bit rate field that determines the specified transmission rate.
  • the specified transmission rate is selected by the base station to optimize packet data throughput based on the current RF environment.
  • the method further includes receiving a PERSISTENCE bit and an ALL ACID ND bit (step 244) wherein the PERSISTENCE bit and the ALL_ACID_IND bit are included in the transmission rate grant signal.
  • sub-packets of a first data packet are transmitted at the specified fransmission rate until an acknowledge (ACK) is received from the base station (step 248).
  • ACK acknowledge
  • the ACK transmitted by the base station indicates successful decoding of the sub-packet and further prompts the mobile station that the remaining sub- packets of the first data packet can be discarded and a new data packet can be transmitted.
  • sub-packets of a second data packet are transmitted at one of an incrementally adjusted transmission rate or an defined autonomous fransmission rate based on a logic state of the PERSISTENCE bit and a logic state of the ALL_ACID_LND bit (step 252).
  • the autonomous transmission rate is the lowest transmission rate that the mobile station can transmit without authorization from the base station and is established at mobile station initialization.
  • the incrementally adjusted transmission rate is the specified transmission rate determined by the transmission grant signal adjusted by a defined increment or decrement.
  • the sub-packets of the second data packet are transmitted at the defined autonomous rate when the PERSISTENCE bit is set to a first logic state (step 256). By setting the PERSISTENCE bit to the first logic state, a mobile station is authorized to transmit at the autonomous rate as soon as data is received in a mobile station buffer. Alternatively, the sub-packets are transmitted at the incrementally adjusted transmission rate when the PERSISTENCE bit is set to a second logic state (step 260).
  • the method uses a value of a rate control bit (RCB) to prompt the mobile station to increment the incrementally adjusted transmission rate, to decrement the incrementally adjusted fransmission rate, or to not adjust the incrementally adjusted transmission rate (step 264).
  • the incrementally adjusted transmission rate is incremented when the RCB is a first value.
  • the incrementally adjusted transmission rate is decremented when the RCB value is a third value.
  • the incrementally adjusted transmission rate is not adjusted when the RCB value is a second value.
  • the mobile station incrementally adjusts the incrementally adjusted transmission rate for H-ARQ channels based on a logic state of the ALL_ACID_IND bit.
  • the mobile station incrementally adjusts the incrementally adjusted transmission rate for only the current H-ARQ channel based on a first logic state of the ALL_ACID_IND bit and incrementally adjusts the incrementally adjusted transmission rate for all the H-ARQ channel based on a second logic state of the ALL_ACID IND bit (step 268).
  • the H-ARQ first logic state is defined to be logic one
  • the H-ARQ second logic state is defined to be logic zero.
  • the addition of the ALL_ACID_IND bit to the transmission grant signal allows flexibility in setting the transmission rate for the H-ARQ channels based on the current RF environment.
  • Figure 9 is a flowchart of a method for setting a reverse link transmission rate for a mobile station in a packet data network.
  • a transmission grant signal fransmitted by a base station includes a specified transmission rate (step 280). Additionally, a PERSISTENCE bit is received with the rate grant signal (step 284). Sub-packets of a first data packet are transmitted at the specified transmission rate until an acknowledge (ACK) is received from the base station (step 288). Thereafter, sub-packets of a second data packet are transmitted at one of an incrementally adjusted transmission or an autonomous transmission rate based on a value of the PERSISTENCE bit (step 292). The sub-packets of the second data packet are transmitted at the autonomous transmission rate when the PERSISTENCE bit is set to a first logic state (step 296).
  • the sub-packets of the second data packet are transmitted at the incrementally adjusted fransmission rate when the PERSISTENCE bit is set to a second logic state (step 300).
  • the incrementally adjusted transmission rate is adjusted based on a value of a rate control bit (RCB) (step 304). Thereafter, the RCB value prompts the mobile station to increment the incrementally adjusted transmission rate (step 308), or to decrement the incrementally adjusted transmission rate (step 312), or prompts the mobile station not to adjust the incrementally adjusted transmission rate (step 316).
  • the incrementally adjusted transmission rate is incremented when the RCB is a first value.
  • the incrementally adjusted transmission rate is decremented when the RCB value is a third value.
  • the incrementally adjusted transmission rate is not adjusted when the RCB value is a second value.

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Abstract

L'invention porte sur une station mobile qui transmet des sous-paquets à un taux de transmission spécifique ou autonome basé sur un bit de PERSISTANCE. La station mobile accroît, décroît, ou ne modifie pas le taux de transmission lorsque le bit de PERSISTANCE est un deuxième état logique et un bit de contrôle de taux (RCB) correspond à une première, deuxième, ou troisième valeur. Un autre mode de réalisation de l'invention comprend un bit ALL_ACID_IND qui donne pour consigne à la station mobile d'ajuster le taux de transmission spécifié soit pour un seul canal H-ARQ soit pour tous les canaux H-ARQ. Selon un autre mode de réalisation, la station mobile a recours au RCB associé à un NAK pour ajuster un rapport transmission-pilote. Après le NAK, la station mobile surveille la valeur du RCB pour augmenter le taux de transmission, décroître le taux de transmission, ou ne pas modifier le taux de transmission des sous-paquets suivants du même paquet de données.
PCT/IB2004/001231 2003-03-06 2004-03-05 Amelioration de liaison inversee pour l'amrc 2000 revision d WO2004080006A2 (fr)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1549099A2 (fr) * 2003-12-26 2005-06-29 Samsung Electronics Co., Ltd. Contrôle du débit dans le sens montant dans un réseau de communication mobile
EP1630974A1 (fr) * 2004-08-23 2006-03-01 Lucent Technologies Inc. Commande de puissance par boucle extérieure pour transmission de données à haute vitesse
EP1982478A1 (fr) * 2006-02-06 2008-10-22 Telefonaktiebolaget L M Ericsson (Publ) Optimisation de performance pour un canal de liaison montante dans un réseau de communication sans fil
EP2220780A1 (fr) * 2007-12-14 2010-08-25 Telefonaktiebolaget LM Ericsson Procédé et agencement pour régler une puissance d'émission par réglage d'un facteur de gain dans un système de communication
AU2011201300B2 (en) * 2005-03-29 2012-03-22 Ntt Docomo, Inc. Transmission rate control method, mobile station and radio network controller

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6151508A (en) * 1998-09-15 2000-11-21 Samsung Electronics, Co., Ltd. Reverse power control method in a cellular system
WO2001078269A1 (fr) * 2000-04-10 2001-10-18 Samsung Electronics Co., Ltd. Procede de mesure du taux de confusion d'un canal commun de paquets dans un systeme de communication amdc
US20010053140A1 (en) * 1999-11-29 2001-12-20 Sung-Ho Choi Apparatus and method for assigning a common packet channel in a CDMA communication system
EP1225780A2 (fr) * 2001-01-18 2002-07-24 Samsung Electronics Co., Ltd. Dispositif et procédé de contrôle de l'émission en direction amont dans un système de radiocommunication mobile
EP1231807A2 (fr) * 2001-02-12 2002-08-14 Lg Electronics Inc. Gestion du débit de données sur la voie montante de façon dédicacée pour chaque mobile
EP1257140A1 (fr) * 2001-05-08 2002-11-13 Lucent Technologies Inc. Procédé contrôlant la transmission montante dans un rèseau de communication sans fils
WO2003010984A1 (fr) * 2001-06-27 2003-02-06 Nortel Networks Limited Communication d'information de controle dans des systemes de communication sans fil
US20030081572A1 (en) * 2001-10-30 2003-05-01 Samsung Electronics Co., Ltd. Apparatus and method for controlling power of reverse channels in a mobile communication system

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6151508A (en) * 1998-09-15 2000-11-21 Samsung Electronics, Co., Ltd. Reverse power control method in a cellular system
US20010053140A1 (en) * 1999-11-29 2001-12-20 Sung-Ho Choi Apparatus and method for assigning a common packet channel in a CDMA communication system
WO2001078269A1 (fr) * 2000-04-10 2001-10-18 Samsung Electronics Co., Ltd. Procede de mesure du taux de confusion d'un canal commun de paquets dans un systeme de communication amdc
EP1225780A2 (fr) * 2001-01-18 2002-07-24 Samsung Electronics Co., Ltd. Dispositif et procédé de contrôle de l'émission en direction amont dans un système de radiocommunication mobile
EP1231807A2 (fr) * 2001-02-12 2002-08-14 Lg Electronics Inc. Gestion du débit de données sur la voie montante de façon dédicacée pour chaque mobile
EP1257140A1 (fr) * 2001-05-08 2002-11-13 Lucent Technologies Inc. Procédé contrôlant la transmission montante dans un rèseau de communication sans fils
WO2003010984A1 (fr) * 2001-06-27 2003-02-06 Nortel Networks Limited Communication d'information de controle dans des systemes de communication sans fil
US20030081572A1 (en) * 2001-10-30 2003-05-01 Samsung Electronics Co., Ltd. Apparatus and method for controlling power of reverse channels in a mobile communication system

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1549099A2 (fr) * 2003-12-26 2005-06-29 Samsung Electronics Co., Ltd. Contrôle du débit dans le sens montant dans un réseau de communication mobile
WO2005064819A1 (fr) * 2003-12-26 2005-07-14 Samsung Electronics Co., Ltd. Appareil et un procede de controle du debit inverse des donnees dans un systeme mobile de communication
EP1549099A3 (fr) * 2003-12-26 2005-12-07 Samsung Electronics Co., Ltd. Contrôle du débit dans le sens montant dans un réseau de communication mobile
AU2004310053B2 (en) * 2003-12-26 2007-10-25 Samsung Electronics Co., Ltd. Apparatus and method for controlling reverse rate in mobile communication system
US7738419B2 (en) 2003-12-26 2010-06-15 Samsung Electronics Co., Ltd Apparatus and method for controlling reverse rate in mobile communication system
EP1630974A1 (fr) * 2004-08-23 2006-03-01 Lucent Technologies Inc. Commande de puissance par boucle extérieure pour transmission de données à haute vitesse
AU2011201300B2 (en) * 2005-03-29 2012-03-22 Ntt Docomo, Inc. Transmission rate control method, mobile station and radio network controller
US8364160B2 (en) 2005-03-29 2013-01-29 Ntt Docomo, Inc. Transmission rate control method, mobile station and radio network controller
EP1982478A1 (fr) * 2006-02-06 2008-10-22 Telefonaktiebolaget L M Ericsson (Publ) Optimisation de performance pour un canal de liaison montante dans un réseau de communication sans fil
EP1982478A4 (fr) * 2006-02-06 2012-01-04 Ericsson Telefon Ab L M Optimisation de performance pour un canal de liaison montante dans un réseau de communication sans fil
EP2220780A1 (fr) * 2007-12-14 2010-08-25 Telefonaktiebolaget LM Ericsson Procédé et agencement pour régler une puissance d'émission par réglage d'un facteur de gain dans un système de communication
EP2220780A4 (fr) * 2007-12-14 2014-07-23 Ericsson Telefon Ab L M Procédé et agencement pour régler une puissance d'émission par réglage d'un facteur de gain dans un système de communication

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