US20100195586A1 - Multiband-operation in wireless communication systems - Google Patents

Multiband-operation in wireless communication systems Download PDF

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Publication number
US20100195586A1
US20100195586A1 US12/366,025 US36602509A US2010195586A1 US 20100195586 A1 US20100195586 A1 US 20100195586A1 US 36602509 A US36602509 A US 36602509A US 2010195586 A1 US2010195586 A1 US 2010195586A1
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control channel
format
channel data
data
over
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Hyung-Nam Choi
Maik Bienas
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Intel Deutschland GmbH
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Infineon Technologies AG
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Application filed by Infineon Technologies AG filed Critical Infineon Technologies AG
Assigned to INFINEON TECHNOLOGIES AG reassignment INFINEON TECHNOLOGIES AG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BIENAS, MAIK, CHOI, HYUNG-NAM
Priority to DE102010000287.9A priority patent/DE102010000287B4/de
Priority to KR1020100010969A priority patent/KR101176712B1/ko
Priority to CN201010138175.0A priority patent/CN101820682B/zh
Priority to CN201410144344.XA priority patent/CN103874215B/zh
Publication of US20100195586A1 publication Critical patent/US20100195586A1/en
Assigned to Intel Mobile Communications Technology GmbH reassignment Intel Mobile Communications Technology GmbH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: INFINEON TECHNOLOGIES AG
Assigned to Intel Mobile Communications GmbH reassignment Intel Mobile Communications GmbH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: Intel Mobile Communications Technology GmbH
Priority to US14/179,717 priority patent/US9788308B2/en
Priority to US15/729,206 priority patent/US20180255533A1/en
Assigned to INTEL DEUTSCHLAND GMBH reassignment INTEL DEUTSCHLAND GMBH CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: Intel Mobile Communications GmbH
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • 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
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals

Definitions

  • LTE-A Long Term Evolution-Advanced
  • LTE-A Long Term Evolution-Advanced
  • LTE-A Long Term Evolution-Advanced
  • LTE networks employ packet-scheduling, which dynamically allocates resources to mobile communication device through time and frequency domain scheduling over a shared physical control channel.
  • Current LTE networks are unable to support mobile communication device having higher bandwidth capabilities than LTE mobile communication device.
  • a network capable of supporting mobile communication device with different bandwidth capabilities is desired.
  • Embodiments of the invention provide methods, wireless communication networks, and base stations that transmit control channel data of a first format over a control channel, wherein the control channel data of the first format conveys information related to data transmitted within a first frequency band and transmit control channel data over the control channel of a second format, wherein the control channel data of the second format conveys information related to data transmitted over one or more frequency bands, the one or more frequency bands having a combined bandwidth equal or greater than the first frequency band.
  • Embodiments further provide an apparatus comprising a transceiver, a processor, and a memory unit communicatively connected to the processor.
  • the memory unit includes computer code that when executed by the processor causes the wireless communication device to receive and interpret control channel data, wherein the control channel data includes a carrier frequency field and a physical resource block field.
  • FIG. 1A shows an example frame structure for use with embodiments of the invention
  • FIG. 1B shows an example physical resource block for use with embodiments of the invention
  • FIG. 2 shows an example message scheduling chart for use with embodiments of the invention
  • FIGS. 3A and 3B show, respectively, control channel data structure in accordance with an embodiment of the invention
  • FIG. 4 shows an architectural overview of an example network architecture in accordance with an embodiment of the invention
  • FIG. 5 shows an uplink and downlink frequency distribution in accordance with an embodiment of the invention
  • FIGS. 6A and 6B show, respectively, message sequence charts for multiband-operation in an LTE-A communication system in accordance with an embodiment of the invention.
  • FIG. 7 shows a block diagram of an example architecture for a wireless communication device for use with embodiments of the invention.
  • embodiments of the invention provide adapting control channel information to facilitate centralized and distributed scheduling of network resources for a network with mobile communication devices of differing bandwidth capabilities.
  • LTE and LTE-A support multiple access methods for uplink transmissions (from mobile communication device to base station) and downlink transmissions (from base station to mobile communication device).
  • OFDMA Orthogonal Frequency Division Multiple Access
  • TDMA Time Division Multiple Access
  • 3GPP Third Generation Partnership Project
  • LTE Long Term Evolution
  • OFDMA in combination with TDMA OFDMA/TDMA
  • MCD mobile communication device
  • Uplink data transmission is based on Single Carrier Frequency Division Multiple Access (SC-FDMA) in combination with TDMA.
  • SC-FDMA Single Carrier Frequency Division Multiple Access
  • LTE and LTE-A also support the following duplexing methods: TDD, full-duplex FDD and half-duplex FDD.
  • Full-duplex FDD uses two separate frequency bands for uplink and downlink transmissions such as media data or control information.
  • Full-duplex FDD allows for uplink and downlink transmissions to occur simultaneously.
  • Half-duplex FDD also uses two separate frequency bands for uplink and downlink transmissions, but transmissions do not overlap in time.
  • TDD uses the same frequency band for both uplink and downlink transmissions.
  • FIG. 1A shows an example frame structure for use with embodiments of the invention.
  • Frame structure 100 is applicable to full-duplex FDD, half-duplex FDD, OFDMA, and SC-FDMA.
  • Each radio frame 102 is 10 ms long and consists of 20 slots 104 of length 0.5 ms, numbered from 0 to 19.
  • Subframe 106 is defined as two consecutive slots.
  • 10 subframes are available for downlink and uplink transmission in each 10 ms interval.
  • a slot 104 consists of 6 or 7 OFDMA symbols in downlink transmission and 6 or 7 SC-FDMA symbols in uplink transmissions.
  • the OFDMA and SC-FDMA symbols contain data as well as control information assigning network resources to a user.
  • FIG. 1B shows an example resource block for use with embodiments of the invention.
  • Physical resource block 120 is the smallest unit of allocation assigned by a base station or relay node for transmitting uplink or downlink data.
  • Downlink physical resource block 120 includes a matrix of 12 subcarriers 110 by 6 or 7 OFDM symbols 108 .
  • a resource element 112 corresponds to one OFDM symbol and one subcarrier.
  • a typical transmission in an LTE network will include multiples of 12 subcarriers being simultaneously transmitted, and thus many resource blocks are also being transmitted simultaneously.
  • an eNodeB signals the allocation of physical radio resources for data transmission on a Downlink Shared Channel (DL-SCH) and an Uplink Shared Channel (UL-SCH), through a control channel.
  • a control channel is a communication channel that carries at least control information. Examples of control information include, but are not limited to, number of allocated resource blocks in the frequency domain, modulation and coding scheme, transmit power control commands, Hybrid Automatic Repeat ReQuest process number, and Positive Acknowledgements/Negative Acknowledgements (HARQ ACK/NAK). Scheduling and data transport between MCD and a base station or a relay node in an LTE or LTE-A network occur over physical channels.
  • the Physical Uplink Shared Channel (PUSCH) carries user and control data on a UL-SCH transport channel. Resources for the PUSCH are allocated on a sub-frame basis.
  • the Physical Uplink Control Channel is a physical channel only. That is, no logical or transport channels are mapped to this channel. It carries the control information such as Hybrid Automatic Repeat ReQuest Positive Acknowledgements/Negative Acknowledgements (HARQ ACK/NAK) in response to downlink transmissions on PDSCH.
  • HARQ ACK/NAK Hybrid Automatic Repeat ReQuest Positive Acknowledgements/Negative Acknowledgements
  • the Physical Downlink Shared Channel (PDSCH) is used mostly for data and multimedia transport by carrying user and control data on DL-SCH. It occupies the OFDMA symbols in a subframe not occupied by Physical Downlink Control Channel.
  • the Physical Downlink Control Channel (PDCCH) carries the control information related to downlink transmissions such as resource allocation of DL-SCH. It also carries the control information related to uplink transmissions such as resource allocation of UL-SCH and Transmit Power Control commands for PUCCH and PUSCH. Due to the different types of control information to be transmitted over the PDCCH, the control information has been grouped into so-called downlink control information (DCI) formats. For example, a PDCCH with DCI format 0 is used for the scheduling resources for the PUSCH.
  • DCI downlink control information
  • the PDCCH is used by an eNodeB to inform the MCD about the resource allocation of PUSCH and PDSCH.
  • the MCD can determine whether the resource allocation is intended for it or not by detecting its implicitly encoded identity.
  • PDCCH formats also referred to as DCI formats, have been specified.
  • the payload size for each DCI format is variable and depends mainly on the cell bandwidth.
  • Table 1 shows some examples of the DCI formats.
  • DCI formats used for scheduling PUSCH and PDSCH in FDD Payload size PDCCH formats Purpose (FDD) DCI format 0 PUSCH scheduling Range: 19 . . . 27 bits DCI format 1 Scheduling of one PDSCH codeword Range: 24 . . . 42 bits DCI format 1A Compact scheduling of one PDSCH codeword Range: 21 . . . 29 bits DCI format 1B Compact scheduling of one PDSCH codeword with Range: 22 . . . 32 bits precoding information DCI format 1C Very compact scheduling of one PDSCH codeword Range: 8 . . . 15 bits DCI format 1D Compact scheduling of one PDSCH codeword with Range: 22 . . .
  • DCI format 2 PDSCH scheduling in closed-loop spatial multiplexing Range 28 . . . 57 bits mode
  • DCI format 2A PDSCH scheduling in open-loop spatial multiplexing Range 25 . . . 53 bits mode
  • FIG. 2 shows an example message scheduling chart for use with embodiments of the invention.
  • Base station 202 transmits over PDCCH 206 to MCD 204 at Subframe #i indicating that the base station will transmit data over PDSCH 208 intended for MCD 204 .
  • a HARQ ACK/NAK is required to be transmitted by MCD 204 at Subframe #i+4 over the PUCCH 212 .
  • base station 202 transmits over PDCCH 210 with DCI format 0 to MCD 204 indicating to MCD 204 to adjust PUSCH 214 transmission scheduled for subframe #i+5.
  • LTE-A requires resource allocation of bandwidths larger than 20 MHz, for example up to 100 MHz of bandwidth.
  • FIG. 3A shows control channel data structure 300 in accordance with an embodiment of the invention.
  • Physical resource allocation information element 302 includes information as to which carrier frequencies (CFs) are to be used in an uplink or downlink transmission and the number of physical resource blocks (PRBs) allocated to each carrier frequency. These two elements enable an LTE-A network to assign PRBs over multiple carrier frequencies to an LTE-A MCD.
  • MCD ID element 304 includes an identification number of a MCD.
  • Payload size element 306 includes transport block size.
  • Modulation scheme element 308 includes information about which modulation scheme will be used, e.g., Quadrature Phase-Shift Keying (QPSK), 16-Quadrature Amplitude Modulation (QAM), 64-QAM.
  • HARQ information element 310 is implemented to send positive acknowledgement (ACK) or negative acknowledgement (NAK) signals, indicating whether a MCD received valid data or not.
  • ACK positive acknowledgement
  • NAK negative acknowledgement
  • one embodiment of the invention adapts the PDCCH structure to facilitate scheduling LTE and LTE-A MCDs.
  • the physical resource allocation information element of PDCCH formats are adapted to include information about the carrier frequency assigned to the LTE-A MCD in uplink or downlink transmission and the number of resource blocks allocated in each associated frequency band.
  • FIG. 3B shows control channel data structure 320 in accordance with another embodiment of the invention.
  • control channel data structure 320 is a PDCCH.
  • Control channel data structure 320 shares elements 302 - 310 (i.e., physical resource allocation information element 302 , MCD ID element 304 , payload size element 306 , modulation scheme element 308 , and HARQ information element 310 ) with control channel data structure 300 , but also includes RF transmission (for uplink) and/or RF reception (for downlink) bandwidth capabilities of an LTE-A MCD at element 312 .
  • Element 312 allows an LTE-A network to implement a distributed scheduling of network resources. That is, both base stations and relay nodes may allocate network resources to MCDs since a bandwidth capability of a MCD is known by the network.
  • FIGS. 3A and 3B are only two possible configurations within the scope of the invention and that there may be many variations or additions to this configuration.
  • carrier frequency and physical resource block information may be contained in separate element blocks and not in Physical resource allocation information element 302 .
  • FIG. 4 shows an architectural overview of an example network architecture in accordance with an embodiment of the invention.
  • Network 400 includes base station 404 , which provides coverage for cell 402 .
  • base station 404 is an LTE-Advanced eNodeB.
  • Base station 404 supports direct connections with LTE MCDs 406 and LTE-A MCDs 408 .
  • Relay nodes 410 and 412 may be deployed in the cell for providing additional coverage at cell-edge or coverage holes.
  • Relay nodes 410 and 412 may include a process and a memory unit.
  • LTE MCD 407 and LTE-A MCD 409 communicate with base station 404 via uplink and downlink transmissions through the intermediate relay nodes 410 and 412 .
  • the scheduling of uplink and downlink transmissions for LTE MCDs 406 and 407 may be performed by base station 404 applying an LTE physical control channel structure, as described in detail above in Table 1. But for scheduling transmissions for LTE-Advanced MCDs 408 and 409 , current LTE physical control channel structures cannot be applied and need to be modified. Current LTE physical control channel structures do not support bandwidths larger than 20 MHz, flexible spectrum usage, or spectrum sharing, all of which an LTE-A MCD and network may be capable of.
  • relay nodes 410 and 412 may be performed by relay nodes 410 and 412 .
  • relaying or multi-hop communication is one way to improve the coverage, throughput, and capacity for existing and future cellular communication systems at low deployment costs.
  • relay nodes 410 and 412 are deployed in the coverage area of the macro cell 402 for providing additional coverage at cell edge or coverage holes.
  • relay nodes 410 and 412 are adapted to function like a base station for MCDs 407 and 409 and/or adapted to function like a MCD for base station 404 .
  • base station 404 is an LTE-A eNodeB, which supports direct connections with LTE MCD 406 and LTE-A MCD 408 . Further, connections with LTE MCD 407 and LTE-A MCD 409 are supported through relay nodes 410 and 412 , respectively.
  • LTE MCD 406 and LTE MCD 407 support a maximum RF transmission/reception bandwidth of 20 MHz and operate only in 20 MHz uplink and downlink bandwidths.
  • LTE-A MCD 408 and LTE-A MCD 409 support a maximum RF transmission/reception bandwidth of 60 MHz and operate in a combined 25 MHz uplink band. In some embodiments, LTE-A MCD 408 and LTE-A MCD 409 operate in an overall 65 MHz downlink band. In some embodiments, the PDCCHs are transmitted in a frequency band shared by all MCDs (LTE MCD 406 , LTE MCD 407 , LTE-A MCD 408 , and LTE-A MCD 409 ).
  • Embodiments within the scope of the present invention encompass several types of relay nodes, which are categorized according to the functionality, mobility, and processing capabilities of the relay node.
  • a relay node may be categorized by the protocol layers the relay affects when relaying a signal, An L1 relay sends an amplified copy of its received signal and thus only affects the physical layer of an LTE or LTE-A network.
  • An L2 relay receives and decodes signals up to an L2 protocol level and transmits a re-encoded signal.
  • an L2 relay affects the physical layer and L2 protocol layers (e.g. MAC and RLC).
  • An L3 relay affects the physical, L2, and L3 protocol layers and receives and forwards IP packets.
  • a relay node may be also categorized according to the mobility of the relay node.
  • a Fixed Relay Node is permanently installed at a fixed location.
  • a Nomadic Relay Node is intended to function from a location that is fixed for only periods of time.
  • a Mobile Relay node is designed to function while in motion.
  • incorporating relaying functionality into the LTE-A system impacts both MCD and base stations.
  • One issue is the scheduling of physical radio resources for uplink and downlink transmission.
  • the resource allocation is determined by a relay node in cooperation with a base station. That is, the relay node is able to change and adapt the resource allocation in the frequency and/or time domain if required.
  • the PDCCH. formats as currently specified for LTE cannot support a distributed scheduling mode in an LTE-A network.
  • the PDCCH structure is adapted to include the RF transmission and reception capability of LTE-A MCDs.
  • Distributed scheduling between base stations and relay stations is supported by such a PDCCH structure because a relay station will be able to change and adapt network resources in ways that are within the RF transmission and reception capability of an LTE-A MCD.
  • the physical resource allocation information element of PDCCH formats are adapted to include information about the RE transmission/reception bandwidth capability of an LTE-Advanced MCD, information about the carrier frequency assigned to the MCD in uplink and downlink transmission, and the number of resource blocks allocated in the associated frequency band.
  • FIG. 5 shows an uplink and downlink frequency distribution in accordance with an embodiment of the invention.
  • an LTE-A radio cell operates in full-duplex FDD mode.
  • For uplink transmission of an LTE-A MCD an overall 25 MHz is allocated with two adjacent frequency bands 502 and 504 with respective carrier frequencies f 1 and f 2 .
  • For downlink transmission of an LTE-A MCD an overall 65 MHz are allocated consisting of four frequency bands: two adjacent bands 506 and 508 with respective carrier frequencies f 3 and f 4 , and two non-adjacent bands 510 and 512 with respective carrier frequencies f 5 and f 6 .
  • For uplink transmission of an LTE MCD 20 MHz is allocated via frequency band 504 with carrier frequency f 2 .
  • For downlink transmission of an LTE MCD 20 MHz is allocated via frequency band 506 with carrier frequency f 3 .
  • LTE MCDs and LTE-A MCDs operate over different bandwidths
  • downlink control information PDCCH for example
  • PDCCH downlink control information
  • FIG. 5 is one possible configuration within the scope of the invention and that there may be many variations or additions to this configuration. Variations within the scope of the invention include, but are not limited to, frequency bands larger or smaller than 5 MHz and 20 MHz, control channel information being transmitted over multiple carrier frequencies, and a total number of carrier frequencies being more or fewer than six.
  • FIG. 6A shows a message sequence chart for multiband-operation in an LTE-A communication system in accordance with an embodiment of the invention.
  • eNodeB 602 transmits PDCCH format 1 in a subframe over a 20 MHz frequency band for the downlink scheduling of LTE MCD 604 .
  • PDCCH format 1 allocates a definite number of resource blocks for the PDSCH within a 20 MHz frequency band.
  • LTE MCD 604 adjusts the associated PDSCH reception in the remaining OFDMA symbols of the subframe according to the received PDCCH format 1 information. Adjustments may include modulation and coding scheme and HARQ process number.
  • LTE-A PDCCH format 1 allocates a definite number of resource blocks for the PDSCH within downlink frequency bands with respective carrier frequencies f 3 , f 4 , and f 5 , as follows: Carrier frequency f 3 : N 1 resource blocks; Carrier frequency f 4 : N 2 resource blocks; Carrier frequency f 5 : N 3 resource blocks.
  • LTE-A MCD 606 Upon detection of LTE-A PDCCH format 1 in the first OFDMA symbols of the subframe, LTE-A MCD 606 adjusts the associated PDSCH reception in the remaining OFDMA symbols of the subframe according to the received PDCCH format 1 information.
  • FIG. 6B shows a message sequence chart for multiband-operation in an LTE-A communication system in accordance with an embodiment of the invention.
  • the downlink scheduling of LTE MCD 616 and LTE-A MCD 618 is partly conducted through intermediate NodeRs 612 and 614 .
  • NodeR 2 614 is able to adapt, in the frequency and/or time domains, resource allocation transmissions.
  • eNodeB 611 transmits PDCCH format 1 over a 20 MHz frequency band to NodeR 1 612 for the downlink scheduling of LTE MCD 616 .
  • PDCCH format 1 allocates a definite number of resource blocks RBs for the PDSCH within the 20 MHz frequency band.
  • NodeR 1 612 forwards the received PDCCH format 1 to LTE-MCD 616 .
  • LTE MCD 616 adjusts the associated PDSCH reception in the remaining OFDMA symbols of the subframe according to the received PDCCH format 1 information.
  • LTE-A PDCCH format 4 is formatted in accordance with an embodiment of the invention.
  • LTE-A PDCCH format 4 allocates a definite number of resource blocks for the PDSCH within downlink frequency bands with respective carrier frequencies f 3 , f 4 , and f 5 , as follows: Carrier frequency f 3 : N 1 resource blocks; Carrier frequency f 4 : N 2 resource blocks; Carrier frequency f 5 : N 3 resource blocks.
  • the RF transmission/reception bandwidth capability of LTE-A MCD 618 expressed as T MHz, is also included with LTE-A PDCCH format 4.
  • NodeR 2 614 receives the PDCCH format 4 information and adapts the resource allocation, due to, for example, temporary bad channel conditions in frequency bands with respective carrier frequencies of f 3 and f 4 .
  • Another example for adaption the resource allocation is to evenly distribute the traffic load over all available carrier frequencies for reducing signal processing efforts at the transmitter and receiver.
  • An example adaption by NodeR 2 may then be as follows: Carrier frequency f 5 : M 1 resource blocks; Carrier frequency f 6 : M 2 resource blocks.
  • NodeR 2 614 transmits the adapted resource allocation on LTE-A PDCCH format 1 to LTE-A MCD 618 .
  • LTE-A MCD 618 Upon detection of LTE-A PDCCH format 1 in the first OFDMA symbols of the subframe, LTE-A MCD 618 adjusts the associated PDSCH reception in the remaining OFDMA symbols of the subframe according to the received PDCCH format 1 information.
  • a relay node may transmit data more or fewer than six carrier frequencies. Further, a relay node may be able to transmit both PDCCH format 1 and LTE-A PDCCH format 1.
  • FIG. 7 shows a block diagram of an example architecture for wireless communication device 700 (WCD).
  • WCD 700 is a device capable of receiving and/or transmitting signals over a wireless communication network. Examples include, but are not limited to, base stations, eNodeBs, relay stations, NodeRs, and mobile phones.
  • WCD 700 includes processor 702 , memory 704 , transceiver 706 , and network interface 708 , connected by bus 710 .
  • memory 704 may include random access memory 712 , such as conventional DRAM, and non-volatile memory 714 , such as conventional flash memory, for storing the firmware that operates WCD 700 , as well as other parameters and settings that should be retained by WCD 700 .
  • Transceiver 706 includes antenna 716 , which is used for communication wirelessly with one or more MCDs and/or WCDs.
  • network interface 708 connects the WCD 700 to the core network, and may be a conventional wired network interface, such as a DSL interface, an Ethernet interface, or a USB interface that connects to an external computer or network interface device for connection to the core network.
  • network interface 708 may be a wireless network interface that communicates with the core network via a wireless local-area network, a wireless metropolitan area network, or a wireless wide area network.
  • WCD 700 may include I/O devices, such as a display (not shown), a smart card interface, and a smart card (not shown), to verify that WCD 700 is authorized for operation, or a variety of indicator lights or LEDs (not shown), to indicate the current status of WCD 700 .
  • I/O devices such as a display (not shown), a smart card interface, and a smart card (not shown), to verify that WCD 700 is authorized for operation, or a variety of indicator lights or LEDs (not shown), to indicate the current status of WCD 700 .
  • an embodiment of the invention provides a method of transmitting data in a communication system that transmit control channel data of a first format over a control channel, wherein the control channel data of the first format conveys information related to data transmitted within a first frequency band.
  • the method further transmits control channel data of a second format over the control channel, wherein the control channel data of the second format conveys information related to data transmitted over one or more frequency bands, the one or more frequency bands having a combined bandwidth equal or greater than the first frequency band.
  • the one or more frequency bands include the first frequency band.
  • the control channel data of the first format is transmitted over the control channel with a first bandwidth
  • the control channel data of the second format is transmitted over the control channel with the first bandwidth.
  • control channel data of the first format is transmitted over the control channel with a first carrier frequency
  • control channel data of the second format is transmitted over the control channel with the first carrier frequency
  • control channel data of the first format is transmitted over the control channel with a first bandwidth
  • control channel data of the second format is transmitted over the control channel with a second bandwidth the second bandwidth being equal or greater than the first bandwidth
  • control channel data of the first format is transmitted over the control channel with a first carrier frequency
  • control channel data of the second format is transmitted over the control channel with a second carrier frequency, the second carrier frequency being a different frequency than the first carrier frequency
  • control channel data of the second format includes a carrier frequency field, the carrier frequency field being indicative of one or more carrier frequencies to be used in a transmission, and a physical resource block field, the physical resource block field being indicative of a number of physical resource blocks allocated to each one or more carrier frequencies to be used in the transmission.
  • control channel data of the second format includes a mobile communication device bandwidth field, the mobile communication device bandwidth field being indicative of a radio frequency transmission and/or reception bandwidth capability of a mobile communication device.
  • Some embodiments of the invention provide a wireless communication network, the wireless communication network including a first mobile communication device, the first mobile communication device operating over a first frequency band, a second mobile communication device, the second mobile communication device operating over one or more frequency bands, the one or more frequency bands having a combined bandwidth equal or greater than the first frequency band, a base station.
  • the base station is configured to transmit control channel data of a first format over a control channel, wherein the control channel data of the first format conveys information related to data transmitted within the first frequency band.
  • the base station is further configured to transmit control channel data of a second format over the control channel, wherein the control channel data of the second format conveys information related to data transmitted over the one or more frequency bands.
  • the one or more frequency bands includes the first frequency band.
  • the base station is further configured to transmit control channel data of the first format over the control channel with a first bandwidth, and transmit control channel data of the second format over the control channel with the first bandwidth.
  • the base station is further configured to transmit control channel data of the first format over the control channel with a first carrier frequency, and transmit control channel data of the second format over the control channel with the first carrier frequency.
  • the base station is further configured to transmit control channel data of the first format over the control channel with a first bandwidth, and transmit control channel data of the second format over the control channel with a second bandwidth, the second bandwidth being equal or greater than the first bandwidth.
  • the base station is further configured to transmit control channel data of the first format over the control channel with a first carrier frequency, and transmit control channel data of the second format over the control channel with a second carrier frequency, the second carrier frequency being a different frequency than the first carrier frequency.
  • the information related to data transmitted over the one or more frequency bands includes a carrier frequency field, the carrier frequency field being indicative of one or more carrier frequencies to be used in a transmission, and a physical resource block field, the physical resource block field being indicative of a number of physical resource blocks allocated to each one or more carrier frequencies to be used in the transmission.
  • the information related to data transmitted over the one or more frequency bands further includes a mobile communication device bandwidth field, the mobile communication device bandwidth field being indicative of a radio frequency transmission and/or reception bandwidth capability of the second mobile communication device.
  • the wireless communication network further includes a relay node.
  • the relay node is configured to receive control channel data of the second format, decode control channel data of the second format, reconfigure control channel data of the second format, wherein the reconfiguration alters the information related to data transmitted over the one or more frequency bands, re-encode control channel data of the second format, and transmit the control channel data of the second format.
  • Some embodiments of the invention provide a base station for transmitting control channels in a communication system.
  • the base station is configured to generate control channel data of a first format, wherein the control channel data of the first format conveys information related to data to be transmitted within a first frequency band.
  • the base station is further configured to generate control channel data of a second format, wherein the control channel data of the second format conveys information related to data to be transmitted over one or more frequency bands, the one or more frequency bands having a combined bandwidth equal or greater than the first frequency band.
  • the base station is further configured to transmit control channel data of the first and second format over a control channel and transmit data in conformance with the control channel data of the first and second format.
  • Some embodiments of the invention provide a wireless communication device including a transceiver, a processor, and a memory unit communicatively connected to the processor.
  • the memory unit includes computer code that when executed by the processor causes the wireless communication device to receive control channel data, and computer code that when executed by the processor causes the wireless communication device to dynamically interpret the control channel data.
  • the control channel data includes a carrier frequency field, the carrier frequency field being indicative of one or more carrier frequencies to be used in a transmission and a physical resource block field, the physical resource block field being indicative of a number of physical resource blocks allocated to each one or more carrier frequencies to be used in the transmission.
  • control channel data further includes a mobile communication device bandwidth field, the mobile communication device bandwidth field being indicative of a radio frequency transmission and/or reception bandwidth capability of a mobile communication device.
  • the wireless communication device is a relay node. In some embodiments, the relay node is configured to reconfigure control channel data of the second format. In some embodiments, the wireless communication device is a mobile communication device. In some embodiments, the wireless communication device is a base station.

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CN201010138175.0A CN101820682B (zh) 2009-02-05 2010-02-05 无线通信系统中的多频带操作
CN201410144344.XA CN103874215B (zh) 2009-02-05 2010-02-05 演进型节点和无线装置
US14/179,717 US9788308B2 (en) 2009-02-05 2014-02-13 Multiband-operation in wireless communication systems
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US20140161077A1 (en) 2014-06-12
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US9788308B2 (en) 2017-10-10
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