US20070066232A1 - Pilot grouping and route protocols in multi-carrier communication systems - Google Patents

Pilot grouping and route protocols in multi-carrier communication systems Download PDF

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US20070066232A1
US20070066232A1 US11523959 US52395906A US2007066232A1 US 20070066232 A1 US20070066232 A1 US 20070066232A1 US 11523959 US11523959 US 11523959 US 52395906 A US52395906 A US 52395906A US 2007066232 A1 US2007066232 A1 US 2007066232A1
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pilot
plurality
group
apparatus
pilot signals
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US11523959
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Peter Black
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Qualcomm Inc
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Qualcomm Inc
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00Modulated-carrier systems
    • H04L27/26Systems using multi-frequency codes
    • H04L27/2601Multicarrier modulation systems
    • H04L27/2602Signal structure
    • H04L27/261Details of reference signals
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/0001Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0026Transmission of channel quality indication
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/12Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16Arrangements 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
    • H04L1/1607Details of the supervisory signal
    • H04L1/1671Details of the supervisory signal the supervisory signal being transmitted together with control information
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00Modulated-carrier systems
    • H04L27/26Systems using multi-frequency codes
    • H04L27/2601Multicarrier modulation systems
    • H04L27/2602Signal structure
    • H04L27/261Details of reference signals
    • H04L27/2613Structure of the reference signals per se
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/0001Arrangements for dividing the transmission path
    • H04L5/0003Two-dimensional division
    • H04L5/0005Time-frequency
    • H04L5/0007Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0037Inter-user or inter-terminal allocation
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/005Allocation of pilot signals, i.e. of signals known to the receiver of common pilots, i.e. pilots destined for multiple users or terminals
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/0091Signaling for the administration of the divided path
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATIONS NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/16Performing reselection for specific purposes
    • H04W36/18Performing reselection for specific purposes for allowing seamless reselection, e.g. soft reselection
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATIONS NETWORKS
    • H04W74/00Wireless channel access, e.g. scheduled or random access
    • H04W74/04Scheduled or contention-free access

Abstract

Embodiments disclosed herein relate to methods and systems for pilot grouping, route protocols, and scheduling in multi-carrier communication systems. In an embodiment, an access terminal may group a plurality of pilot signals characterized by different frequencies into one or more pilot groups, each pilot grouping being identified by a plurality of parameters (e.g., a PN offset and a group ID). Each pilot group may include pilot signals having substantially the same coverage area. The access terminal may further select a representative pilot signal from each pilot group for pilot strength reporting. The access terminal may also use the pilot grouping for effective set management.

Description

    CLAIM OF PRIORITY UNDER 35 U.S.C. §119
  • This Application for Patent claims priority to Provisional Patent Application No. 60/719,760, entitled “Pilot Grouping and Route Protocols in Multi-carrier Communication Systems,” filed on Sep. 22, 2005, which is assigned to the Assignee hereof and hereby expressly incorporated by reference herein.
  • CROSS REFERENCE TO RELATED APPLICATIONS
  • This Application for Patent is related to U.S. patent application Ser. No. 11/156,202, filed on Jun. 17, 2005, entitled “Pilot Grouping and Set Management in Multi-carrier Communication Systems,” which claims priority under 35 U.S.C. §119 to Provisional Patent Application No. 60/659,856, filed on Mar. 8, 2005, entitled “Pilot Strength Reporting and Active/Candidate/Neighbor Set Management for Multi-carrier System.”
  • BACKGROUND
  • 1. Field
  • This disclosure relates generally to wireless communications. More specifically, embodiments disclosed herein relate to pilot grouping and reporting, route protocols, and scheduling in multi-carrier communication systems.
  • 2. Background
  • Wireless communication systems are widely deployed to provide various types of communication (e.g., voice, data, etc.) to multiple users. Such systems may be based on code division multiple access (CDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal frequency division multiple access (OFDMA), or other multiple access techniques. A communication system may be designed to implement one or more standards, such as IS-95, cdma2000, IS-856, W-CDMA, TD-SCDMA, and other standards.
  • As the demand for multimedia and high-rate data services rapidly grows, multi-carrier modulation has been attracted considerable attention in wireless communication systems. There lies a challenge to provide efficient and robust multi-carrier communication systems.
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 illustrates an embodiment of a multi-carrier communication system;
  • FIG. 2 illustrates an embodiment of a cell having multiple sectors in a multi-carrier communication system;
  • FIG. 3 illustrates an embodiment of several sectors and associated pilot signals in a multi-carrier communication system;
  • FIG. 4 illustrates an embodiment of pilot grouping in a multi-carrier communication system;
  • FIG. 5 illustrates a section of the embodiment of FIG. 4;
  • FIGS. 6A-6C illustrate an embodiment of set management in a multi-carrier communication system;
  • FIG. 7 illustrates an embodiment of traffic channel assignment in a multi-carrier communication system;
  • FIG. 8 illustrates an embodiment of scheduling in a multi-carrier communication system;
  • FIG. 9 illustrates a flow chart of a process, which may be used in an embodiment to implement pilot grouping and reporting in a multi-carrier communication system;
  • FIG. 10 illustrates a flow chart of a process, which may be used in connection with traffic channel assignment in a multi-carrier communication system;
  • FIG. 11 illustrates a flow chart of a process, which may be used in connection with scheduling in a multi-carrier communication system;
  • FIG. 12 illustrates a block diagram of an apparatus, in which some disclosed embodiments may be implemented;
  • FIG. 13 illustrates a block diagram of an apparatus, in which some disclosed embodiments may be implemented; and
  • FIG. 14 illustrates a block diagram of an apparatus, in which some disclosed embodiments may be implemented.
  • DETAILED DESCRIPTION
  • Embodiments disclosed herein relate to methods and systems for pilot grouping and reporting, route protocols, and scheduling in multi-carrier communication systems.
  • FIG. 1 illustrates an embodiment of a multi-carrier communication system 100. By way of example, various access terminals (ATs) 110, including ATs 110 a-110 c, are dispersed throughout the system. Each AT 110 may communicate with an access network (AN) 120 via one or more channels at different frequencies on a forward link and/or a reverse link at a given moment, as illustrated by double-sided arrows 130. For illustration and clarity, two double-sided arrows 130 are shown for each AT 110. There may be any number of channels (or frequencies) on the forward link or reverse link in a communication system. Further, the number of frequencies on the forward link (or “forward link frequencies”) need not be the same as the number of frequencies on reverse link (or “reverse link frequencies”).
  • AN 120 may further be in communication with a core network, such as a packet data network via a packet data serving node (PDSN) 140. In an embodiment, system 100 may be configured to support one or more standards, e.g., IS-95, cdma2000, IS-856, W-CDMA, TD-SCDMA, other multi-carrier standards, or a combination thereof.
  • An AN described herein may refer to the portion of a communication system configured to interface with a core network (e.g., a packet data network via PDSN 140 in FIG. 1) and route data between ATs and the core network, perform various radio access and link maintenance functions, control radio transmitters and receivers, and so on. An AN may include and/or implement the functions of a base station controller (BSC) (such as found in a 2nd, 3rd, or 4th generation wireless network), a base-station transceiver system (BTS), an access point (AP), a modem pool transceiver (MPT), a Node B (e.g., in a W-CDMA type system), etc.
  • An AT described herein may refer to various types of devices, including (but not limited to) a wireless phone, a cellular phone, a laptop computer, a wireless communication personal computer (PC) card, a personal digital assistant (PDA), an external or internal modem, etc. An AT may be any data device that communicates through a wireless channel and/or through a wired channel (e.g., by way of fiber optic or coaxial cables). An AT may have various names, such as access unit, subscriber unit, mobile station, mobile device, mobile unit, mobile phone, mobile, remote station, remote terminal, remote unit, user device, user equipment, handheld device, etc. Different ATs may be incorporated into a system. ATs may be mobile or stationary, and may be dispersed throughout a communication system. An AT may communicate with one or more ANs on a forward link and/or a reverse link at a given moment. The forward link (or downlink) refers to transmission from an AN to an AT. The reverse link (or uplink) refers to transmission from the AT to the AN.
  • A multi-carrier communication system described herein may include a frequency division multiplexing system, an orthogonal frequency division multiplexing system, or other multi-carrier modulation systems, where each carrier corresponds to a frequency range.
  • A cell may refer to a coverage area serviced by an AN. A cell may be divided into one or more sectors. One or more frequencies may be assigned to cover a cell. FIG. 2 illustrates an embodiment of a cell 200 in a multi-carrier communication system.
  • By way of example, cell 200 is shown to be divided into three sectors 210, 220, 230.
  • Three frequencies, f1, f2, f3, are assigned to cover cell 200. For illustration and clarity, cell 200 is shown as a cylinder, whose cross-section area corresponds with cell 200's coverage area, and whose height along an axis 240 corresponds with the frequency dimension of cell 200. As such, each wedge of the cylinder (across all frequencies) constitutes a sector. In other embodiments, cells may have different shapes, and may have any number of sectors. There may also be any number of frequencies allocated to a cell. For example, in some situations, multiple frequencies may be allocated to a cell covering a large coverage area, such as shown in FIG. 2. In other situations, one frequency may be allocated to a cell covering a small dense area (e.g., a “hot spot”).
  • A pilot signal (or “pilot”) described herein may be characterized (or specified) by a set of parameters, e.g., denoted as <PN offset, channel>(or <channel, PN offset>), where “channel” may refer to the frequency of the pilot signal. The term “channel” may be used herein interchangeably with the term “frequency.” Further, a “coverage area” of a pilot signal may refer to a “strength vs. distance” profile of the pilot signal.
  • In a single-carrier communication system, an AT is required to report the strengths of all the pilot signals received, as the pilot signals become strong or weak in strength. In a multi-carrier communication system, there may be multiple pilot signals associated with a sector, as shown in FIG. 2. If an AT were to report the strength of each pilot signal received (as in the single-carrier system), such would cause too many triggers for a pilot strength report (e.g., a route update message in an IS-856 type system) because there are more pilots signals and each of which may cross the reporting thresholds independently due to short-term fading; and each report would also be larger because there are more pilot signals to report. Further, many of these pilot signals may have comparable coverage areas and reporting one of them may provide sufficient information to the AN with regard to the set of pilot signals the AT is receiving. A need, therefore, exists for efficient management of pilot signals in multi-carrier communication systems.
  • Embodiments disclosed herein relate to methods and systems for pilot grouping and reporting, route protocols, and scheduling in multi-carrier communication systems.
  • FIG. 3 illustrates an embodiment of several sectors and associated pilot signals in a multi-carrier communication system 300. System 300 may generally include any number of sectors, each associated with one or more pilot signals having distinct frequencies. For illustration and clarity, three sectors 310, 320, 330 are explicitly shown. Also shown by way of example are pilot signals 311, 312 associated with sector 310, pilot signals 321-324 associated with sector 320, and pilot signals 331, 332 associated with sector 330. These pilot signals are shown in reference to a frequency axis 340, indicating that pilot signals associated with a given sector have different frequencies.
  • FIG. 3 further illustrates a strength vs. distance profile 350 presenting the coverage area of pilot signal 321 or 322, and a strength vs. distance profile 355 presenting the coverage area of pilot signal 323 or 324.
  • In an embodiment, an AN (not explicitly shown) serving sector 320 may assign a group identifier (or ID) to each of pilot signals 321-324 based on their coverage areas, such that the pilot signals having the substantially same coverage area share a common group ID. PN offset may be used as the group ID in one embodiment. For example, pilot signals 321, 322 may share a common group ID (or PN offset); pilot signals 323, 324 may also share a common group D (or PN offset). The AN may then transmit pilot signals 321-324 with the corresponding group IDs. Upon receiving pilot signals 321-324, an AT 360 may group pilot signals 321, 322 into a first pilot group and pilot signals 323, 324 into a second pilot group in accordance with their group IDs. AT 360 may select one pilot signal from each pilot group as a representative pilot signal for the group: e.g., pilot signal 321 may be selected as the representative pilot signal for the first pilot group, and pilot signal 324 may be selected as the representative pilot signal for the second pilot group. AT 360 may measure the strength of each received pilot signal, or at least one pilot signal from each pilot group (such as the representative pilot signal). AT 360 may include only the representative pilot signal (as opposed to the entire pilot group) in a pilot strength report, as further described below.
  • In FIG. 3, two pilot strength thresholds, “pilot-add” and “pilot-drop”, are marked on profiles 350, 355. These thresholds may be used to determine to which one of AT 360's candidate set and neighbor set each received pilot signal belong. For example, if the strength of a pilot signal received by AT 360 exceeds the pilot-add threshold, the pilot signal may potentially be added to AT 360's candidate set, as further described below. If the strength of a pilot signal received by AT 360 falls below the pilot-drop threshold, the pilot signal may be removed from AT 360's active set or candidate set.
  • In one embodiment, as AT 360 moves away from sector 320, it may first detect that the strengths of pilot signals 323, 324 in the second pilot group fall below the pilot-drop threshold, and later those of pilot signals 321, 322 in the first pilot group. (Such may be due to that pilot signals 321, 322 do not have counterparts in neighboring sectors 310, 330, hence being subject to less interference.) As a result, AT 360 may first send a pilot strength report for the representative pilot signal associated with the second pilot group and later a pilot strength report for the representative pilot associated with the first pilot group to the AN, in connection with these two events. The pilot strength report may include, e.g., the strength, the PN offset, and the frequency of the corresponding representative pilot signal. In another embodiment, as AT 360 moves closer to sector 320, AT 360 may first send a pilot strength report for the representative pilot signal associated with the first pilot group and later a pilot strength report for the representative pilot associated with the second pilot group to the AN (in connection with the sequential rise of the strengths of the pilot signals in these two groups).
  • Further, pilot signals in sectors 310, 330 may also be grouped in a similar manner. For example, pilot signals 311, 312 in sector 310 may form a pilot group. Pilot signals 331, 332 in sector 330 may also form a pilot group. In an embodiment, sector 320 (or the AN servicing it) may select one pilot signal from each pilot group in neighbor sectors 310, 330, e.g., pilot signal 311 and pilot signal 332, and advertise only the selected pilot signals from its neighbor sectors.
  • The pilot grouping and reporting thus described allows ATs to communicate effectively with an AN in a multi-carrier communication system, while avoiding excessive use of network resources. It further allows an AT to perform set management effectively, as further described below.
  • In some embodiments, a pilot group may be identified by a set of parameters, e.g., <PN offset, GroupID>, where GroupID denotes a group ID, and the pilot signals having substantially the same coverage area fall within the same pilot group. An AT may further select a single pilot from each pilot group as the representative pilot for the group, and send a pilot strength report (e.g., a route update message) only for the representative pilot. By grouping the pilots in this manner, the AT need not send multiple reports for the pilots having substantially the same coverage area.
  • FIG. 4 illustrates an embodiment of pilot grouping in a multi-carrier communication system. For illustration and clarity, each pilot is represented by a box labeled with <frequency, PN offset>; further, the area of each box is shown to be in relation (e.g., proportional) to the coverage area of the associated pilot. For example, pilot <f2, PN=b>is shown to have a larger coverage area than pilot <f1, PN=b>associated with the same sector, due to no adjacent channel interference.
  • By way of example, GroupID=x and GroupID=y are shown to be associated with the pilots illustrated in FIG. 4. The sector associated with pilot <f1, PN=a>may advertise pilots <f1, PN=b, GroupID=x>and <f2, PN=b, GroupID=y>as neighbors. As such, the pilot grouping thus described allows the AN to get separate pilot strength reports from the AT when the coverage areas of the co-located pilots are different and to use the same pilot PN planning in the overlaid frequency.
  • In an embodiment, to take advantage of the additional coverage of pilot <f2, PN=b>, the AT may be allowed to point its data source control (DSC) channel to different cells (e.g., those in its active set) on different frequencies, such as DSC_f1 and DSC_f2 illustrated in FIG. 5. For example, if the AT is allowed to point its DSC only to the cell with PN=a, then it may get only the single carrier coverage as there is no coverage on frequency f2. On the other hand, if the AT is allowed to point its DSC only to the sector with PN=b on frequency f1, it may get a bad coverage associated with pilot <f1, PN=b>, because it is closer to pilot <f1, PN=a>.
  • FIGS. 6A-6C illustrate an embodiment of set management in a multi-carrier communication system. For clarity and illustration, each pilot signal is specified by <“PN offset|GroupID”, frequency>. By way of example, FIG. 6A shows that an AT (not explicitly shown) may initially have an active set 610 including a first pilot group and a second pilot group. The first pilot group includes two pilot signals specified by <x, f1>and <x, f2>, and the second pilot group includes two pilots specified by <y, f1>and <y, f2>. The AT may also have a candidate set 620, which may initially include, a third pilot group having one pilot specified by <z, f2>.
  • FIG. 6B illustrates one example, where a pilot specified by <z, f1>is added to active set 610. As a result, a pilot specified by <z, f2>is removed from candidate set 620, because both would belong to the same pilot group.
  • FIG. 6C illustrates another example, where a pilot specified by <x, f2>is removed from active set 610 and is not added to candidate set 620. This is because there remains another pilot specified by <x, f1>belonging to the first pilot group in active set 610.
  • The pilot grouping disclosed herein allows for efficient set management in a multi-carrier system. There may be other embodiments of set management.
  • FIG. 7 illustrates an embodiment of how information may be conveyed in the traffic channel assignment in a multi-carrier communication system. A traffic channel assignment (TCA) message from an AN to an AT may carry various types of information, including (but not limited to):
      • Pilots in the AT's active set.
      • Frequencies on which the AT may transmit.
      • <FeedbackMultiplexingIndex, RL frequencies>, where “FeedbackMultiplexingIndex” indicates how the following information related to multiple forward link (FL) channels may be multiplexed into a single reverse link (RL) channel: information such as cell selection, hybrid automatic repeat request (ARQ) acknowledgement (ACK), signal-to-noise-and-interference ratio (C/I) feedback, etc.
      • Data rate control (DRC) cover and DSC for each sector/cell in the AT's active set.
  • For example, one or more FL channels associated with a plurality (or first set) of frequencies, including FL channel 710 at FL_frequency_a, FL channel 720 at FL_frequency_b, FL channel 730 at FL_frequency_c, and FL channel 740 at FL_frequency_d, are to be transmitted from an AN to an AT (both not explicitly shown). One or more RL channels associated with a second set of frequencies, including RL channel 750 at RL_frequency_x, RL channel 760 at RL_frequency_y, and RL channel 770 at RL_frequency_z, are assigned to the AT. In an embodiment, the AN may assign a subset of the FL channels each to carry RL-related information (e.g., a reverse power control (RPC) bit stream) for each of the RL channels assigned to the AT. For example, FL channel 720 may be assigned to carry the RPC bit stream for RL channel 750, FL channel 730 may be assigned to carry the RPC bit stream for RL channel 760, and FL channel 740 may be assigned to carry the RPC bit stream for RL channel 770, such as illustrated in FIG. 7. Note, in this assignment, each pair of FL and RL channels need not have the same frequency.
  • In an embodiment, the AN may select one of the FL channels, e.g., FL channel 720, as the “primary FL channel,” and inform the AT to monitor the control channel carried by the primary FL channel (e.g., for supervision and other purposes). In this way, the AT may ignore other FL channels insofar as monitoring the control channel is concerned.
  • In some embodiments, an RL channel may also carry FL-related information for one or more FL channels. For example, as illustrated by dashed lines in FIG. 7, RL channel 750 may carry FL-related information for each of FL channels 710, 720, 730, which may include (but is not limited to) cell selection, sector selection, hybrid ARQ ACK, C/I feedback, etc.
  • FIG. 8 illustrates an embodiment of scheduler groups in a multi-carrier communication system. If a plurality of pilots belong to the same scheduler group, they may for example share the same sequence number (e.g., ARQ or “QuickNAK” sequence number) in multi-link radio link protocol (RLP), where the sequence number may be associated with detecting gap(s) in the data packet received through a single carrier. By way of example, pilots 810, 820, 830, 840 (shown with solid shading) may belong to the same scheduler group and share BTS queue 850 in the same scheduling, as shown on the left hand side of the figure.
  • In some embodiments, a plurality of pilots may belong to the same scheduler group under any of the following conditions:
      • The scheduler tags associated with the pilots are the same (such as illustrated in FIG. 8).
      • The pilots are in the same sub-active set of the AT (which may include potential sectors to which the AT may point its DRC cover) and belong to the sectors (e.g., sectors B and C) that are in softer handoff with each other (such as identified in the TCA message).
  • In some instances, if the TCA message does not specify the scheduler tag for a pilot in the active set of the AT, then the scheduler tag associated with that pilot may be assumed to be a number different from other scheduler tag(s) specified in the message.
  • FIG. 9 illustrates a flow diagram of a process 900, which may be used in an embodiment to implement pilot grouping and reporting in a multi-carrier communication system. Step 910 groups a plurality of pilot signals into one or more pilot groups, each pilot group being identified by a plurality of parameters (e.g., PN offset and GroupID, such as described above). Step 920 selects a representative pilot signal from each pilot group for pilot strength reporting (such as described above). Process 900 may further include measuring the strength of the representative pilot signal, as shown in step 930.
  • FIG. 10 illustrates a flow diagram of a process 1000, which may be used in connection with traffic channel assignment in a multi-carrier communication system. Step 1010 receive a message (e.g., a TCA message such as described above) indicating a plurality of forward link channels each carrying RL-related information for each of reverse link channels associated with an access terminal. Step 1020 assigns one of the reverse link channels to carry FL-related information associated with at least one of the forward link channels (such as described above).
  • FIG. 11 illustrates a flow diagram of a process 1100, which may be used in connection with scheduling in a multi-carrier communication system. Step 1110 groups a plurality of pilot signals into one or more scheduler groups in accordance with the sequence numbers of the pilot signals, wherein the pilot signals are characterized by a plurality of frequencies. Step 1120 associates each scheduler group with a transmission queue (such as described above).
  • FIG. 12 shows a block diagram of an apparatus 1200, which may be used to implement some disclosed embodiments (such as described above). By way of example, apparatus 1200 may include a receiving unit (or module) 1210 configured to receive a plurality of pilot signals characterized by a plurality of frequencies; a grouping unit 1220 configured to group the pilot signals into one or more pilot groups, each pilot group identified by a plurality of parameters (e.g., PN offset and GroupID, such as descried above); and a selecting unit 1230 configured to select a representative pilot signal from each pilot group for pilot strength reporting. Apparatus 1200 may further include a measuring unit 1240 configured to measure the strengths of the pilot signals (e.g., the strength of the representative pilot signal associated with each pilot group), and a reporting unit 1250 configured to configured to report the strength of the representative pilot signal for each pilot group to an AN (e.g., as the strengths, of the pilot signals in the pilot group exceed the pilot-add threshold, or fall below the pilot-drop threshold, such as described above). Apparatus 1200 may also include a DSC unit 1260 configured to determine/point the DSC associated with an AT to each of a plurality of cells on different frequencies (such as described above).
  • In apparatus 1200, receiving unit 1210, grouping unit 1220, selecting unit 1230, measuring unit 1240, reporting unit 1250, and DSC unit 1260 may be coupled to a communication bus 1270. A processing unit 1280 and a memory unit 1290 may also be coupled to communication bus 1270. Processing unit 1280 may be configured to control and/or coordinate the operations of various units. Memory unit 1290 may embody instructions to be executed by processing unit 1280. In some embodiments, memory unit 1290 may also store an AT's active set, candidate set, and neighbor set (such as described above).
  • FIG. 13 illustrates a block diagram of an apparatus 1300, which may be used to implement some disclosed embodiments (such as described above). By way of example, apparatus 1300 may include a receiving unit (or module) 1310 configured to receive a message (e.g., a TCA message described above) indicating a plurality of forward link channels each carrying RL-related information for each of reverse link channels associated with an access terminal; and a channel-assignment unit 1320 configured to assign one of the reverse link channels to carry FL-related information associated with at least one of the forward link channels (such as described above). Apparatus 1300 may further include a monitoring unit 1330 configured to monitor the control channel carried by one of the forward link channels (e.g., the primary FL channel described above).
  • In apparatus 1300, receiving unit 1310, channel-assignment unit 1320, and monitoring unit 1330 may be coupled to a communication bus 1340. A processing unit 1350 and a memory unit 1360 may also be coupled to communication bus 1340.
  • Processing unit 1350 may be configured to control and/or coordinate the operations of various units. Memory unit 1360 may embody instructions to be executed by processing unit 1350. Apparatus 1300 may for example be implemented in an, AT, or other communication devices.
  • FIG. 14 illustrates a block diagram of an apparatus 1400, which may be used to implement some disclosed embodiments (such as described above). By way of example, apparatus 1400 may include a grouping unit 1410 configured to group a plurality of pilot signals into one or more scheduler groups (e.g., in accordance with the sequence numbers of the pilot signals); and a scheduling unit 1420 configured to associate each scheduler group with a transmission queue (such as described above).
  • In apparatus 1400, grouping unit 1410 and scheduling unit 1420 may be coupled to a communication bus 1430. A processing unit 1440 and a memory unit 1450 may also be coupled to communication bus 1430. Processing unit 1440 may be configured to control and/or coordinate the operations of various units. Memory unit 1450 may embody instructions to be executed by processing unit 1440. Apparatus 1400 may for example be implemented in an AN, or other network elements.
  • Embodiments disclosed herein provide some embodiments of pilot signal grouping and reporting, set management, route protocols, and scheduling in a multi-carrier communication system. There are other embodiments and implementations.
  • Various units/modules in FIGS. 12-14 and other embodiments may be implemented in hardware, software, firmware, or a combination thereof. In a hardware implementation, various units may be implemented within one or more application specific integrated circuits (ASIC), digital signal processors (DSP), digital signal processing devices (DSPDs), field programmable gate arrays (FPGA), processors, microprocessors, controllers, microcontrollers, programmable logic devices (PLD), other electronic units, or any combination thereof. In a software implementation, various units may be implemented with modules (e.g., procedures, functions, and so on) that perform the functions described herein. The software codes may be stored in a memory unit and executed by a processor (or processing unit). The memory unit may be implemented within the processor or external to the processor, in which case it can be communicatively coupled to the processor via various means known in the art.
  • Various disclosed embodiments may be implemented in an AN, an AT, and other elements in multi-carrier communication systems.
  • Those of skill in the art would understand that information and signals may be represented using any of a variety of different technologies and techniques. For example, data, instructions, commands, information, signals, bits, symbols, and chips that may be referenced throughout the above description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.
  • Those of skill would further appreciate that the various illustrative logical blocks, modules, circuits, and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both. To clearly illustrate this interchangeability of hardware and software, various illustrative components, blocks, modules, circuits, and steps have been described above generally in terms of their functionality. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the overall system. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
  • The various illustrative logical blocks, modules, and circuits described in connection with the embodiments disclosed herein may be implemented or performed with a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general purpose processor may be a microprocessor, but in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices, e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration.
  • The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module may reside in Random Access Memory (RAM), flash memory, Read Only Memory (ROM), Electrically Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. In the alternative, the storage medium may be integral to the processor. The processor and the storage medium may reside in an ASIC. The ASIC may reside in an AT. In the alternative, the processor and the storage medium may reside as discrete components in an AT.
  • The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (33)

  1. 1. A method in a multi-carrier communication system, comprising:
    grouping a plurality of pilot signals into one or more pilot groups, each pilot group being identified by a plurality of parameters; and
    selecting a representative pilot signal from each pilot group for pilot strength reporting.
  2. 2. The method of claim 1, wherein the plurality of parameters include a PN offset and a group identifier.
  3. 3. The method of claim 1, wherein each pilot group includes one or more pilot signals having substantially the same coverage area.
  4. 4. The method of claim 1, wherein the pilot signals are characterized by a plurality of frequencies.
  5. 5. The method of claim 1, further comprising measuring a strength of the representative pilot signal.
  6. 6. The method of claim 5, further comprising reporting the strength of the representative pilot signal, if the strength of the representative pilot signal exceeds a predetermined threshold.
  7. 7. The method of claim 5, further comprising reporting the strength of the representative pilot signal, if the strength of the representative pilot signal falls below a predetermined threshold.
  8. 8. The method of claim 1, further comprising pointing a data source control (DSC) channel associated with an access terminal to each of a plurality of cells on different frequencies.
  9. 9. An apparatus adapted for multi-carrier communications, comprising:
    means for grouping a plurality of pilot signals into one or more pilot groups, each pilot group being identified by a plurality of parameters; and
    means for selecting a representative pilot signal from each pilot group for pilot strength reporting.
  10. 10. The apparatus of claim 9, wherein the plurality of parameters include a PN offset and a group identifier.
  11. 11. The apparatus of claim 9, wherein each pilot group includes one or more pilot signals having substantially the same coverage area.
  12. 12. The apparatus of claim 9, further comprising means for measuring a strength of the representative pilot signal.
  13. 13. The apparatus of claim 12, further comprising means for reporting the strength of the representative pilot signal, if the strength of the representative pilot signal exceeds a predetermined threshold.
  14. 14. The apparatus of claim 12, further comprising means for reporting the strength of the representative pilot signal, if the strength of the representative pilot signal falls below a predetermined threshold.
  15. 15. The apparatus of claim 9, wherein the pilot signals are characterized by a plurality of frequencies.
  16. 16. The apparatus of claim 9, further comprising means for pointing a data source control (DSC) channel associated with an access terminal to each of a plurality of cells on different frequencies.
  17. 17. A method in a communication system, comprising:
    receiving a message indicating a plurality of forward link channels each carrying reverse link-related information for each of reverse link channels associated with an access terminal; and
    assigning one of the reverse link channels to carry forward link-related information associated with at least one of the forward link channels.
  18. 18. The method of claim 17, wherein the forward link-related information includes at least one of a cell selection, a sector selection, an automatic repeat request (ARQ) acknowledgment (ACK), and a signal-to-noise-and-interference (C/I) feedback.
  19. 19. The method of claim 17, wherein the reverse link-related information includes a reverse power control (RPC) bit stream.
  20. 20. The method of claim 17, further comprising monitoring a control channel carried one of the forward link channels.
  21. 21. An apparatus adapted for multi-carrier communications, comprising:
    means for receiving a message indicating a plurality of forward link channels each carrying reverse link-related information for each of reverse link channels associated with an access terminal; and
    means for assigning one of the reverse link channels to carry forward link-related information associated with at least one of the forward link channels.
  22. 22. The apparatus of claim 21, wherein the forward link-related information includes at least one of a cell selection, a sector selection, an automatic repeat request (ARQ) acknowledgment (ACK), and a signal-to-noise-and-interference (C/I) feedback
  23. 23. The apparatus of claim 21, wherein the reverse link-related information includes a reverse power control (RPC) bit stream.
  24. 24. The apparatus of claim 21, further comprising means for monitoring a control channel carried one of the forward link channels.
  25. 25. A method in a multi-carrier communication system, comprising:
    grouping a plurality of pilot signals into one or more scheduler groups in accordance with sequence numbers of the pilot signals, the pilot signals characterized by a plurality of frequencies; and
    associating each scheduler group with a transmission queue.
  26. 26. The method of claim 25, wherein each scheduler group includes one or more pilot signals having a same sequence number.
  27. 27. The method of claim 26, wherein the sequence number is associated with detecting gaps in a received data packet.
  28. 28. The method of claim 25, wherein each scheduler group includes one or more pilot signals associated with a sub-active set of an access terminal.
  29. 29. The method of claim 28, wherein the pilot signals in each scheduler group are associated with a plurality of sectors in softer handoff.
  30. 30. An apparatus adapted for multi-carrier communications, comprising:
    means for grouping a plurality of pilot signals into one or more scheduler groups in accordance with sequence numbers of the pilot signals, the pilot signals characterized by a plurality of frequencies; and
    means for associating each scheduler group with a transmission queue.
  31. 31. The apparatus of claim 30, wherein each scheduler group includes one or more pilot signals having a same sequence number.
  32. 32. The apparatus of claim 30, wherein each scheduler group includes one or more pilot signals associated with a sub-active set of an access terminal.
  33. 33. The apparatus of claim 32, wherein the pilot signals in each scheduler group are associated with a plurality of sectors in softer handoff.
US11523959 2005-09-22 2006-09-19 Pilot grouping and route protocols in multi-carrier communication systems Abandoned US20070066232A1 (en)

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US11523959 US20070066232A1 (en) 2005-09-22 2006-09-19 Pilot grouping and route protocols in multi-carrier communication systems
AT06815255T AT478503T (en) 2005-09-22 2006-09-22 communication systems pilot grouping in multicarrier
CA 2786705 CA2786705C (en) 2005-09-22 2006-09-22 Pilot grouping and route protocols in multi-carrier communication systems
CN 200680034791 CN101406092B (en) 2005-09-22 2006-09-22 Pilot grouping and route protocols in multi-carrier communication systems
DE200660016298 DE602006016298D1 (en) 2005-09-22 2006-09-22 Pilot grouping in multicarrier-communication systems
KR20087009391A KR101004273B1 (en) 2005-09-22 2006-09-22 Pilot grouping and route protocols in multi-carrier communication systems
RU2008115520A RU2418393C2 (en) 2005-09-22 2006-09-22 Grouping of pilot signals and route protocols in communication systems on multiple carriers
ES10008592T ES2383854T3 (en) 2005-09-22 2006-09-22 Multicarrier communications system providing for grouping pilot signals in groups scheduler associated with a transmission queue
PCT/US2006/037131 WO2007038358A3 (en) 2005-09-22 2006-09-22 Pilot grouping and route protocols in multi-carrier communication systems
AU2006295388A AU2006295388B2 (en) 2005-09-22 2006-09-22 Pilot grouping and route protocols in multi-carrier communication systems
SG2009082256A SG158128A1 (en) 2005-09-22 2006-09-22 Pilot grouping and route protocols in multi-carrier communication systems
SG2009082249A SG158127A1 (en) 2005-09-22 2006-09-22 Pilot grouping and route protocols in multi-carrier communication systems
CA 2622463 CA2622463C (en) 2005-09-22 2006-09-22 Pilot grouping and route protocols in multi-carrier communication systems
JP2008532453A JP5175199B2 (en) 2005-09-22 2006-09-22 The pilot grouping and route protocol in a multi-carrier communication system
BRPI0616058A2 BRPI0616058A2 (en) 2005-09-22 2006-09-22 group of pilots and routing protocols in multicarrier communication systems
EP20060815255 EP1927226B1 (en) 2005-09-22 2006-09-22 Pilot grouping in multi-carrier communication systems
KR20107014354A KR101071596B1 (en) 2005-09-22 2006-09-22 Multi-path pilot grouping and protocol of the carrier communication system;
CA 2917280 CA2917280C (en) 2005-09-22 2006-09-22 Pilot grouping and route protocols in multi-carrier communication systems
EP20100008593 EP2247053B1 (en) 2005-09-22 2006-09-22 Communications system with traffic channel assignment
KR20107014356A KR101101723B1 (en) 2005-09-22 2006-09-22 Pilot grouping and route protocols in multi-carrier communication systems
ES10008593T ES2383855T3 (en) 2005-09-22 2006-09-22 Multicarrier communications system with traffic channel assignment
AT10008593T AT557557T (en) 2005-09-22 2006-09-22 Communication system with traffic channel assignment
EP20100008592 EP2247052B1 (en) 2005-09-22 2006-09-22 Multicarrier communications system with provision for grouping pilot signals into scheduler groups associated with a transmission queue
AT10008592T AT557556T (en) 2005-09-22 2006-09-22 A multi-carrier communication system comprising means for grouping pilot signals associated with a queue in planner groups
IL19016908A IL190169D0 (en) 2005-09-22 2008-03-13 Pilot grouping and route protocols in multi-carrier communication systems
NO20081610A NO20081610A (en) 2005-09-22 2008-04-01 Pilot Grouping and routing protocols in kommunikasjonssystmer with multiple carriers
AU2010236026A AU2010236026A1 (en) 2005-09-22 2010-10-26 Pilot grouping and route protocols in multi-carrier communications systems
JP2012246511A JP5563045B2 (en) 2005-09-22 2012-11-08 The pilot grouping and route protocol in a multi-carrier communication system
JP2012246512A JP5563046B2 (en) 2005-09-22 2012-11-08 The pilot grouping and route protocol in a multi-carrier communication system
US14108055 US20140269616A1 (en) 2005-09-22 2013-12-16 Pilot grouping and route protocols in multi-carrier communication systems
US15584920 US10075313B2 (en) 2005-03-08 2017-05-02 Pilot grouping and route protocols in multi-carrier communication systems

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Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060205415A1 (en) * 2005-03-08 2006-09-14 Ramin Rezaiifar Pilot grouping and set management in multi-carrier communication systems
US20070176742A1 (en) * 2006-01-19 2007-08-02 Richard Gerard Hofmann Method of Associating Groups of Classified Source Addresses with Vibration Patterns
US20080170565A1 (en) * 2007-01-11 2008-07-17 Via Telecom Co. Ltd. Nak message transmission with quicknak indication
US20080214201A1 (en) * 2007-02-09 2008-09-04 Yonggang Fang Pilot grouping in wireless communication networks
US20080259800A1 (en) * 2007-04-16 2008-10-23 Alan Clark Method and System for Correlating Streams within a Packet Network
WO2009046458A1 (en) 2007-10-05 2009-04-09 Qualcomm Incorporated Method and apparatus for increasing efficiency of data packet transmission
US20100105336A1 (en) * 2008-10-24 2010-04-29 Qualcomm Incorporated Active set management with hotspot carriers
US20100113078A1 (en) * 2008-10-22 2010-05-06 Qualcomm Incorporated Scope of channel quality reporting region in a multi-carrier system
US20100135173A1 (en) * 2007-04-11 2010-06-03 Telefonaktiebolaget Lm Ericsson (Publ) Method for Implicit Conveying of Uplink Feedback Information
US20100199140A1 (en) * 2007-07-09 2010-08-05 Wook Bong Lee Method for transmitting data using harq
US20110044294A1 (en) * 2009-08-20 2011-02-24 Lie Gregory R Apparatus and Method of Searching Multi-Carrier Active Set Pilots
US8634766B2 (en) 2010-02-16 2014-01-21 Andrew Llc Gain measurement and monitoring for wireless communication systems
US9131420B2 (en) 2008-05-20 2015-09-08 Qualcomm Incorporated Pilot signal set management in a multi-carrier communication system
US20160308561A1 (en) * 2015-04-20 2016-10-20 Electronics And Telecommunications Research Institute Method of providing communication service and apparatus for performing the method
US9521567B2 (en) 2012-07-11 2016-12-13 Lg Electronics Inc. Method for performing measurement of terminal in wireless communication system and apparatus therefor
US10075313B2 (en) 2005-03-08 2018-09-11 Qualcomm Incorporated Pilot grouping and route protocols in multi-carrier communication systems

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8391400B2 (en) 2007-06-20 2013-03-05 Qualcomm Incorporated Control channel format indicator frequency mapping
CN101420727B (en) 2007-10-26 2010-12-29 中兴通讯股份有限公司 Method for implementing hard switching between access networks
US8804587B2 (en) * 2008-04-28 2014-08-12 Telefonaktiebolaget Lm Ericsson (Publ) Methods and arrangements for downlink multi-carrier power control in a wireless communications system
US9432158B2 (en) 2012-10-26 2016-08-30 Sharp Laboratories Of America, Inc. Systems and methods for handling a type-2 carrier

Citations (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5577022A (en) * 1994-11-22 1996-11-19 Qualcomm Incorporated Pilot signal searching technique for a cellular communications system
US5867478A (en) * 1997-06-20 1999-02-02 Motorola, Inc. Synchronous coherent orthogonal frequency division multiplexing system, method, software and device
US6151508A (en) * 1998-09-15 2000-11-21 Samsung Electronics, Co., Ltd. Reverse power control method in a cellular system
US6172993B1 (en) * 1996-12-28 2001-01-09 Daewoo Electronics Co., Ltd. Frame synchronization method and apparatus for use in digital communication system utilizing OFDM method
US6205132B1 (en) * 1996-02-22 2001-03-20 Korea Mobile Telecommunications Corp. Method for accessing a cell using two pilot channels in a CDMA communication system of an asynchronous or quasi-synchronous mode
US20020025001A1 (en) * 2000-05-11 2002-02-28 Ismaeil Ismaeil R. Method and apparatus for video coding
US6430414B1 (en) * 1999-12-29 2002-08-06 Qualcomm Incorporated Soft handoff algorithm and wireless communication system for third generation CDMA systems
US6456606B1 (en) * 1999-03-24 2002-09-24 Qualcomm Incorporated Handoff control in an asynchronous CDMA system
US20020159470A1 (en) * 2000-02-02 2002-10-31 Hiroyuki Atarashi Single-carrier/ds-cdma packet transmitting method, uplink packet transmitting method in multi carrier/ds-cdma mobile communication system, and structure of downlink channel in multi carrier/ds-cdma mobile comunication system
US6496531B1 (en) * 1999-09-02 2002-12-17 Lucent Technologies Inc. Method and system for controlling forward transmit power in a wireless system
US20030008663A1 (en) * 2001-04-24 2003-01-09 Stein Jeremy M. Method and apparatus for estimating the postion of a terminal based on identification codes for transmission sources
US20030035393A1 (en) * 2001-08-17 2003-02-20 Ragulan Sinnarajah Method and apparatus for call setup latency reduction
US20030174643A1 (en) * 2002-03-16 2003-09-18 Samsung Electronics Co., Ltd. Method and apparatus for allocating a pilot carrier adaptively in an orthogonal frequency division multiple access system
US6697629B1 (en) * 2000-10-11 2004-02-24 Qualcomm, Incorporated Method and apparatus for measuring timing of signals received from multiple base stations in a CDMA communication system
US20040160919A1 (en) * 2003-02-14 2004-08-19 Krishna Balachandran Signaling methods for wireless communication systems
US20040166887A1 (en) * 2003-02-24 2004-08-26 Rajiv Laroia Pilot signals for use in multi-sector cells
US20040190471A1 (en) * 1998-09-22 2004-09-30 Bender Paul E. Method and apparatus for rapid assignment of a traffic channel in digital cellular communication systems
US20050009528A1 (en) * 1999-10-21 2005-01-13 Mikio Iwamura Channel identifier assigning method and mobile communications system
US20050159185A1 (en) * 2002-03-28 2005-07-21 Katsuhiko Hiramatsu Base station apparatus and packet transmission method
US20050157801A1 (en) * 2004-01-21 2005-07-21 Gore Dhananjay A. Pilot transmission and channel estimation for an OFDM system with excess delay spread
US7085310B2 (en) * 2001-01-29 2006-08-01 Qualcomm, Incorporated Method and apparatus for managing finger resources in a communication system
US20060205415A1 (en) * 2005-03-08 2006-09-14 Ramin Rezaiifar Pilot grouping and set management in multi-carrier communication systems
US7420939B2 (en) * 2003-08-13 2008-09-02 Qualcomm Incorporated Methods and apparatus of power control in wireless communication systems

Family Cites Families (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2982856B2 (en) 1994-10-26 1999-11-29 エヌ・ティ・ティ移動通信網株式会社 Transmission power control method and transmission power control method communication device using
US5919382A (en) 1994-10-31 1999-07-06 Applied Materials, Inc. Automatic frequency tuning of an RF power source of an inductively coupled plasma reactor
US5602833A (en) 1994-12-19 1997-02-11 Qualcomm Incorporated Method and apparatus for using Walsh shift keying in a spread spectrum communication system
JPH09294287A (en) 1996-04-25 1997-11-11 Nippon Telegr & Teleph Corp <Ntt> Position measurement method and device
CN1236610C (en) 1997-07-01 2006-01-11 松下电器产业株式会社 QFDM transmission mode, transmitter and receiver thereof
US7184426B2 (en) * 2002-12-12 2007-02-27 Qualcomm, Incorporated Method and apparatus for burst pilot for a time division multiplex system
US6584087B1 (en) 1999-06-09 2003-06-24 Infineon Technologies North America Corp. Power control during inter-generation soft handoffs
JP3764612B2 (en) 1999-10-21 2006-04-12 株式会社エヌ・ティ・ティ・ドコモ Allocation method and mobile communication system channel identifier
DE60021281T2 (en) 1999-11-16 2005-12-22 Samsung Electronics Co. Ltd., Suwon Apparatus and method for power control in mobile communication system
JP3526254B2 (en) 2000-02-25 2004-05-10 株式会社エヌ・ティ・ティ・ドコモ Configuration of the downlink channel in a multi-carrier / ds-cdma mobile communication system
GB2366483A (en) 2000-08-21 2002-03-06 Lucent Technologies Inc A method of delivering packets to a roaming mobile
US7072315B1 (en) * 2000-10-10 2006-07-04 Adaptix, Inc. Medium access control for orthogonal frequency-division multiple-access (OFDMA) cellular networks
US20020118783A1 (en) * 2001-02-26 2002-08-29 Peter Cripps Smart antenna based spectrum multiplexing using a pilot signal
CN100548076C (en) 2001-04-24 2009-10-07 高通股份有限公司 Method and apparatus for estimating the position of a terminal based on identification codes for transmission sources
JP2002330096A (en) 2001-04-26 2002-11-15 Matsushita Electric Ind Co Ltd Mobile communication system and method for controlling mobile unit communication
WO2002087319A1 (en) 2001-05-01 2002-11-07 Neville Mlajen Klaric Fishing reel automatic line release clip
US6611510B2 (en) 2001-06-18 2003-08-26 Telcordia Technologies Inc. Method and system for soft handoff of mobile terminals in IP wireless networks.
US7269145B2 (en) * 2001-12-20 2007-09-11 Samsung Electronics Co., Ltd. Mode transition method for wireless data service in a mobile station
US7539162B2 (en) 2001-12-24 2009-05-26 Nortel Networks Limited Walsh code management in a code division multiple access cellular wireless communication system
US7235296B2 (en) 2002-03-05 2007-06-26 3M Innovative Properties Co. Formulations for coated diamond abrasive slurries
US20040203420A1 (en) * 2002-04-10 2004-10-14 Rick Roland R. Method and apparatus for calculating a representative measurement from multiple data measurements
CA2524695A1 (en) 2002-05-06 2003-11-20 Flarion Technologies, Inc. In packet-switched cellular networks
US8665734B2 (en) 2002-05-06 2014-03-04 Qualcomm Incorporated Methods and apparatus for uplink macro-diversity in packet-switched cellular networks
US7583637B2 (en) * 2003-01-31 2009-09-01 Alcatel-Lucent Usa Inc. Methods of controlling data rate in wireless communications systems
WO2004071042A1 (en) 2003-02-06 2004-08-19 Siemens Aktiengesellschaft Method and device for transmitting data in a multi-carrier system
KR100964669B1 (en) * 2003-05-10 2010-06-22 엘지전자 주식회사 Mobile Communication System and Method of Designing a MAC Channel at the Mobile Communication System
EP1489773A1 (en) 2003-06-16 2004-12-22 Mitsubishi Denki Kabushiki Kaisha Time scheduling with stop-and-wait ARQ process
US7206598B2 (en) 2003-07-25 2007-04-17 Qualcomm Incorporated Method and apparatus for a control channel power allocation in a communication system
KR100970632B1 (en) 2003-08-28 2010-07-15 엘지전자 주식회사 method of controlling traffic and data rate
US7426175B2 (en) * 2004-03-30 2008-09-16 Motorola, Inc. Method and apparatus for pilot signal transmission
US7508842B2 (en) * 2005-08-18 2009-03-24 Motorola, Inc. Method and apparatus for pilot signal transmission
US20070066232A1 (en) 2005-09-22 2007-03-22 Black Peter J Pilot grouping and route protocols in multi-carrier communication systems

Patent Citations (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5577022A (en) * 1994-11-22 1996-11-19 Qualcomm Incorporated Pilot signal searching technique for a cellular communications system
US6205132B1 (en) * 1996-02-22 2001-03-20 Korea Mobile Telecommunications Corp. Method for accessing a cell using two pilot channels in a CDMA communication system of an asynchronous or quasi-synchronous mode
US6172993B1 (en) * 1996-12-28 2001-01-09 Daewoo Electronics Co., Ltd. Frame synchronization method and apparatus for use in digital communication system utilizing OFDM method
US5867478A (en) * 1997-06-20 1999-02-02 Motorola, Inc. Synchronous coherent orthogonal frequency division multiplexing system, method, software and device
US6151508A (en) * 1998-09-15 2000-11-21 Samsung Electronics, Co., Ltd. Reverse power control method in a cellular system
US7630719B2 (en) * 1998-09-22 2009-12-08 Qualcomm Incorporated Method and apparatus for rapid assignment of a traffic channel in digital cellular communication systems
US20040190471A1 (en) * 1998-09-22 2004-09-30 Bender Paul E. Method and apparatus for rapid assignment of a traffic channel in digital cellular communication systems
US6456606B1 (en) * 1999-03-24 2002-09-24 Qualcomm Incorporated Handoff control in an asynchronous CDMA system
US6496531B1 (en) * 1999-09-02 2002-12-17 Lucent Technologies Inc. Method and system for controlling forward transmit power in a wireless system
US20050009528A1 (en) * 1999-10-21 2005-01-13 Mikio Iwamura Channel identifier assigning method and mobile communications system
US6430414B1 (en) * 1999-12-29 2002-08-06 Qualcomm Incorporated Soft handoff algorithm and wireless communication system for third generation CDMA systems
US20020159470A1 (en) * 2000-02-02 2002-10-31 Hiroyuki Atarashi Single-carrier/ds-cdma packet transmitting method, uplink packet transmitting method in multi carrier/ds-cdma mobile communication system, and structure of downlink channel in multi carrier/ds-cdma mobile comunication system
US20020025001A1 (en) * 2000-05-11 2002-02-28 Ismaeil Ismaeil R. Method and apparatus for video coding
US6697629B1 (en) * 2000-10-11 2004-02-24 Qualcomm, Incorporated Method and apparatus for measuring timing of signals received from multiple base stations in a CDMA communication system
US7085310B2 (en) * 2001-01-29 2006-08-01 Qualcomm, Incorporated Method and apparatus for managing finger resources in a communication system
US20030008663A1 (en) * 2001-04-24 2003-01-09 Stein Jeremy M. Method and apparatus for estimating the postion of a terminal based on identification codes for transmission sources
US20030035393A1 (en) * 2001-08-17 2003-02-20 Ragulan Sinnarajah Method and apparatus for call setup latency reduction
US20030174643A1 (en) * 2002-03-16 2003-09-18 Samsung Electronics Co., Ltd. Method and apparatus for allocating a pilot carrier adaptively in an orthogonal frequency division multiple access system
US20050159185A1 (en) * 2002-03-28 2005-07-21 Katsuhiko Hiramatsu Base station apparatus and packet transmission method
US20040160919A1 (en) * 2003-02-14 2004-08-19 Krishna Balachandran Signaling methods for wireless communication systems
US20040166887A1 (en) * 2003-02-24 2004-08-26 Rajiv Laroia Pilot signals for use in multi-sector cells
US7420939B2 (en) * 2003-08-13 2008-09-02 Qualcomm Incorporated Methods and apparatus of power control in wireless communication systems
US20050157801A1 (en) * 2004-01-21 2005-07-21 Gore Dhananjay A. Pilot transmission and channel estimation for an OFDM system with excess delay spread
US7339999B2 (en) * 2004-01-21 2008-03-04 Qualcomm Incorporated Pilot transmission and channel estimation for an OFDM system with excess delay spread
US20060205415A1 (en) * 2005-03-08 2006-09-14 Ramin Rezaiifar Pilot grouping and set management in multi-carrier communication systems
US20110176448A1 (en) * 2005-03-08 2011-07-21 Qualcomm Incorporated Pilot grouping and set management in multi-carrier communication systems

Cited By (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8150408B2 (en) 2005-03-08 2012-04-03 Qualcomm Incorporated Pilot grouping and set management in multi-carrier communication systems
US10075313B2 (en) 2005-03-08 2018-09-11 Qualcomm Incorporated Pilot grouping and route protocols in multi-carrier communication systems
US20060205415A1 (en) * 2005-03-08 2006-09-14 Ramin Rezaiifar Pilot grouping and set management in multi-carrier communication systems
US20070176742A1 (en) * 2006-01-19 2007-08-02 Richard Gerard Hofmann Method of Associating Groups of Classified Source Addresses with Vibration Patterns
US8077019B2 (en) * 2006-01-19 2011-12-13 Qualcomm Incorporated Method of associating groups of classified source addresses with vibration patterns
US20080170565A1 (en) * 2007-01-11 2008-07-17 Via Telecom Co. Ltd. Nak message transmission with quicknak indication
US8051190B2 (en) * 2007-01-11 2011-11-01 Via Telecom Co., Ltd. Nak message transmission with quicknak indication
US8102818B2 (en) * 2007-02-09 2012-01-24 Zte (Usa) Inc. Pilot grouping in wireless communication networks
US20080214201A1 (en) * 2007-02-09 2008-09-04 Yonggang Fang Pilot grouping in wireless communication networks
US8605607B2 (en) * 2007-04-11 2013-12-10 Telefonaktiebolaget Lm Ericsson (Publ) Method for implicit conveying of uplink feedback information
USRE46569E1 (en) * 2007-04-11 2017-10-10 Telefonaktiebolaget Lm Ericsson (Publ) Method for implicit conveying of uplink feedback information
US20100135173A1 (en) * 2007-04-11 2010-06-03 Telefonaktiebolaget Lm Ericsson (Publ) Method for Implicit Conveying of Uplink Feedback Information
US8699375B2 (en) * 2007-04-11 2014-04-15 Telefonaktiebolaget Lm Ericsson (Publ) Method for implicit conveying of uplink feedback information
US20130010660A1 (en) * 2007-04-11 2013-01-10 Telefonaktiebolaget Lm Ericsson (Publ) Method for Implicit Conveying of Uplink Feedback Information
WO2008130994A2 (en) * 2007-04-16 2008-10-30 Telchemy Incorporated Method and system for correlating streams within a packet network
WO2008130994A3 (en) * 2007-04-16 2009-07-30 Alan Clark Method and system for correlating streams within a packet network
US20080259800A1 (en) * 2007-04-16 2008-10-23 Alan Clark Method and System for Correlating Streams within a Packet Network
US20100199140A1 (en) * 2007-07-09 2010-08-05 Wook Bong Lee Method for transmitting data using harq
US8347164B2 (en) * 2007-07-09 2013-01-01 Lg Electronics Inc. Method for transmitting data using HARQ
US20090219891A1 (en) * 2007-10-05 2009-09-03 Srinivasan Balasubramanian Method and Apparatus for Increasing Efficiency of Data Packet Transmission
KR101122920B1 (en) * 2007-10-05 2012-03-20 콸콤 인코포레이티드 Method and apparatus for increasing efficiency of data packet transmission
WO2009046458A1 (en) 2007-10-05 2009-04-09 Qualcomm Incorporated Method and apparatus for increasing efficiency of data packet transmission
US8194617B2 (en) 2007-10-05 2012-06-05 Qualcomm Incorporated Method and apparatus for increasing efficiency of data packet transmission
US9131420B2 (en) 2008-05-20 2015-09-08 Qualcomm Incorporated Pilot signal set management in a multi-carrier communication system
US8948704B2 (en) * 2008-10-22 2015-02-03 Qualcomm Incorporated Scope of channel quality reporting region in a multi-carrier system
US20100113078A1 (en) * 2008-10-22 2010-05-06 Qualcomm Incorporated Scope of channel quality reporting region in a multi-carrier system
KR101529976B1 (en) * 2008-10-22 2015-06-18 퀄컴 인코포레이티드 Channel quality reporting for groups of carriers in a multi-carrier system
US8989675B2 (en) 2008-10-22 2015-03-24 Qualcomm Incorporated Scope of channel quality reporting region in a multi-carrier system
JP2015046894A (en) * 2008-10-22 2015-03-12 クゥアルコム・インコーポレイテッドQualcomm Incorporated Channel quality reporting for group of carriers in multi-carrier system
JP2013153478A (en) * 2008-10-22 2013-08-08 Qualcomm Inc Channel quality report for group of carrier in multi-carrier system
US20100105336A1 (en) * 2008-10-24 2010-04-29 Qualcomm Incorporated Active set management with hotspot carriers
US8175594B2 (en) * 2008-10-24 2012-05-08 Qualcomm Incorporated Active set management with hotspot carriers
US20110044294A1 (en) * 2009-08-20 2011-02-24 Lie Gregory R Apparatus and Method of Searching Multi-Carrier Active Set Pilots
US8599749B2 (en) * 2009-08-20 2013-12-03 Qualcomm Incorporated Apparatus and method of searching multi-carrier active set pilots
KR101376680B1 (en) * 2009-08-20 2014-04-01 퀄컴 인코포레이티드 Apparatus and method of searching multi-carrier active set pilots
CN102484629A (en) * 2009-08-20 2012-05-30 高通股份有限公司 Apparatus and method of searching multi-carrier active set pilots
US8909133B2 (en) 2010-02-16 2014-12-09 Andrew Llc Gain measurement and monitoring for wireless communication systems
US8634766B2 (en) 2010-02-16 2014-01-21 Andrew Llc Gain measurement and monitoring for wireless communication systems
US9521567B2 (en) 2012-07-11 2016-12-13 Lg Electronics Inc. Method for performing measurement of terminal in wireless communication system and apparatus therefor
US20160308561A1 (en) * 2015-04-20 2016-10-20 Electronics And Telecommunications Research Institute Method of providing communication service and apparatus for performing the method
US9847799B2 (en) * 2015-04-20 2017-12-19 Electronics And Telecommunications Research Institute Method of providing communication service and apparatus for performing the method

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