WO2011047357A1 - System and method for allocating resources in an extended bandwidth wireless network - Google Patents
System and method for allocating resources in an extended bandwidth wireless network Download PDFInfo
- Publication number
- WO2011047357A1 WO2011047357A1 PCT/US2010/052969 US2010052969W WO2011047357A1 WO 2011047357 A1 WO2011047357 A1 WO 2011047357A1 US 2010052969 W US2010052969 W US 2010052969W WO 2011047357 A1 WO2011047357 A1 WO 2011047357A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- extension portion
- system bandwidth
- resource blocks
- indication
- user equipment
- Prior art date
Links
Classifications
-
- 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
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0091—Signaling for the administration of the divided path
-
- 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
- H04L5/0044—Arrangements for allocating sub-channels of the transmission path allocation of payload
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
Definitions
- the present disclosure relates generally to communication systems, and more particularly, to a system and method for allocating resources to user equipment.
- Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, and broadcasts.
- Typical wireless communication systems may employ multiple-access technologies capable of supporting communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power).
- multiple-access technologies include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, single-carrier frequency divisional multiple access (SC-FDMA) systems, and time division synchronous code division multiple access (TD- SCDMA) systems.
- CDMA code division multiple access
- TDMA time division multiple access
- FDMA frequency division multiple access
- OFDMA orthogonal frequency division multiple access
- SC-FDMA single-carrier frequency divisional multiple access
- TD- SCDMA time division synchronous code division multiple access
- LTE Long Term Evolution
- UMTS Universal Mobile Telecommunications System
- 3 GPP Third Generation Partnership Project
- DL downlink
- UL uplink
- MIMO multiple- input multiple-output
- a method, an apparatus, and a computer program product for wireless communication are disclosed in which a base station provides an extended bandwidth having an extension portion and a non-extension portion.
- the base station can indicate for a particular user equipment (UE) to utilize only a portion of the extended bandwidth.
- the extended bandwidth can include multiplexed resources directed to a plurality of UEs, improving capacity and/or throughput.
- backwards compatibility with devices compatible with LTE Release 8 can be achieved, as those devices can be directed to utilize only the non- extension portion of the extended bandwidth.
- the base station indicates a system bandwidth that includes resource blocks associated with the non- extension portion and resource blocks associated with the extension portion, and the UE is not required to monitor more than a predetermined number of resource blocks to receive a downlink transmission.
- a method of wireless communication includes receiving from a base station an indication of a first system bandwidth.
- the first system bandwidth includes a subset of resource blocks associated with a second system bandwidth configured by the base station, and the second system bandwidth has a non-extension portion and an extension portion.
- the method includes communicating with the base station based on the first system bandwidth.
- a method of wireless communication includes determining a first system bandwidth that includes a subset of resource blocks associated with a second system bandwidth, where the second system bandwidth has an extension portion and a non-extension portion. The method further includes transmitting an indication of the first system bandwidth and communicating with a user equipment based on the first system bandwidth.
- an apparatus for wireless communication includes means for receiving from a base station an indication of a first system bandwidth, the first system bandwidth comprising a subset of resource blocks associated with a second system bandwidth configured by the base station, where the second system bandwidth includes a non-extension portion and an extension portion, and means for communicating with the base station based on the first system bandwidth.
- an apparatus for wireless communication includes means for determining a first system bandwidth comprising a subset of resource blocks associated with a second system bandwidth, where the second system bandwidth includes an extension portion and a non-extension portion, means for transmitting an indication of the first system bandwidth, and means for communicating with a user equipment based on the first system bandwidth.
- a computer program product includes a computer-readable medium having instructions for causing a computer to receive from a base station an indication of a first system bandwidth, the first system bandwidth comprising a subset of resource blocks associated with a second system bandwidth configured by the base station, the second system bandwidth including a non-extension portion and an extension portion, and instructions for causing a computer to communicate with the base station based on the first system bandwidth.
- a computer program product includes a computer-readable medium having instructions for causing a computer to determine a first system bandwidth comprising a subset of resource blocks associated with a second system bandwidth, the second system bandwidth including an extension portion and a non-extension portion, instructions for causing a computer to transmit an indication of the first system bandwidth, and instructions for causing a computer to communicate with a user equipment based on the first system bandwidth.
- an apparatus for wireless communication includes a processing system and a memory coupled to the processing system, wherein the processing system is configured to receive from a base station an indication of a first system bandwidth, the first system bandwidth comprising a subset of resource blocks associated with a second system bandwidth configured by the base station, the second system bandwidth including a non-extension portion and an extension portion, and communicate with the base station based on the first system bandwidth.
- an apparatus for wireless communication includes a processing system and a memory coupled to the processing system, wherein the processing system is configured to determine a first system bandwidth comprising a subset of resource blocks associated with a second system bandwidth, the second system bandwidth including an extension portion and a non-extension portion, transmit an indication of the first system bandwidth, and communicate with a user equipment based on the first system bandwidth.
- FIG. 1 is a diagram illustrating an example of a hardware implementation for an apparatus employing a processing system.
- FIG. 2 is a diagram illustrating an example of a network architecture.
- FIG. 3 is a diagram illustrating an example of an access network.
- FIG. 4 is a diagram illustrating an example of a downlink frame structure for use in an access network.
- FIG. 5 is a diagram illustrating an example of an uplink subframe structure.
- FIG. 6 is a diagram illustrating a frame having an extended bandwidth.
- FIG. 7 is a diagram illustrating extended bandwidth frames that maintain backward compatibility.
- FIG. 8 is a diagram illustrating the control region structure of frames having extended bandwidth.
- FIG. 9 is a diagram illustrating the multiplexing of resources amongst user equipment in the extension portion of an extended bandwidth frame.
- FIG. 10 is a diagram illustrating an example of a radio protocol architecture for the user and control plane.
- FIG. 11 is a diagram illustrating an example of an evolved Node B and user equipment in an access network.
- FIG. 12 is a flow chart illustrating exemplary processes in accordance with various aspects of the disclosure. DETAILED DESCRIPTION
- processors include microprocessors, microcontrollers, digital signal processors (DSPs), field programmable gate arrays (FPGAs), programmable logic devices (PLDs), state machines, gated logic, discrete hardware circuits, and other suitable hardware configured to perform the various functionality described throughout this disclosure.
- DSPs digital signal processors
- FPGAs field programmable gate arrays
- PLDs programmable logic devices
- state machines gated logic, discrete hardware circuits, and other suitable hardware configured to perform the various functionality described throughout this disclosure.
- One or more processors in the processing system may execute software.
- Software shall be construed broadly to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executables, threads of execution, procedures, functions, etc., whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise.
- the software may reside on a computer-readable medium.
- the computer-readable medium may be a non- transitory computer-readable medium.
- a non-transitory computer-readable medium include, by way of example, a magnetic storage device (e.g., hard disk, floppy disk, magnetic strip), an optical disk (e.g., compact disk (CD), digital versatile disk (DVD)), a smart card, a flash memory device (e.g., card, stick, key drive), random access memory (RAM), read only memory (ROM), programmable ROM (PROM), erasable PROM (EPROM), electrically erasable PROM (EEPROM), a register, a removable disk, and any other suitable medium for storing software and/or instructions that may be accessed and read by a computer.
- a magnetic storage device e.g., hard disk, floppy disk, magnetic strip
- an optical disk e.g., compact disk (CD), digital versatile disk (DVD)
- a smart card e.g., a flash memory device (e.g., card, stick, key drive), random access memory (RAM), read only memory (ROM), programmable ROM
- the computer-readable medium may also include, by way of example, a transmission line, or any other suitable medium for transmitting software and/or instructions that may be accessed and read by a computer.
- the computer-readable medium may be resident in the processing system, external to the processing system, or distributed across multiple entities including the processing system.
- the computer-readable medium may be embodied in a computer-program product.
- a computer-program product may include a computer-readable medium in packaging materials.
- FIG. 1 is a block diagram of an exemplary hardware implementation for an apparatus 100 employing a processing system 114.
- the processing system 114 may be implemented with a bus architecture, represented generally by the bus 102.
- the bus 102 may include any number of interconnecting buses and bridges depending on the specific application of the processing system 114 and the overall design constraints.
- the bus 102 links together various circuits including one or more processors, represented generally by the processor 104, memory 116, and computer-readable media, represented generally by the computer-readable medium 106.
- the bus 102 may also link various other circuits such as timing sources, peripherals, voltage regulators, and power management circuits, which are well known in the art, and therefore, will not be described any further.
- a bus interface 108 provides an interface between the bus 102 and a transceiver 110.
- the transceiver 110 provides a means for communicating with various other apparatus over a transmission medium.
- a user interface 112 e.g., keypad, display, speaker, microphone, etc.
- the processor 104 is responsible for managing the bus 102 and general processing, including the execution of software stored on the computer-readable medium 106.
- the software when executed by the processor 104, causes the processing system 114 to perform the various functions described infra for any particular apparatus.
- the computer-readable medium 106 may also be used for storing data that is manipulated by the processor 104 when executing software.
- FIG. 2 is a diagram illustrating an LTE network architecture 200.
- the LTE network architecture 200 may be referred to as an Evolved Packet System (EPS) 200.
- the EPS 200 may include one or more user equipment (UE) 202, an Evolved UMTS Terrestrial Radio Access Network (E-UTRAN) 204, an Evolved Packet Core (EPC) 210, a Home Subscriber Server (HSS) 220, and an Operator's IP Services 222.
- the EPS can interconnect with other access networks, but for simplicity those entities/interfaces are not shown.
- the EPS provides packet-switched services, however, as those skilled in the art will readily appreciate, the various concepts presented throughout this disclosure may be extended to networks providing circuit-switched services.
- the various elements of EPS 200 may include apparatuses 100 (FIG. 1).
- the E-UTRAN includes the evolved Node B (eNB) 206 and other eNBs 208.
- eNB evolved Node B
- the eNB 206 provides user and control plane protocol terminations toward the UE 202.
- the eNB 206 may be connected to the other eNBs 208 via an X2 interface (i.e., backhaul).
- the eNB 206 may also be referred to by those skilled in the art as a base station, a base transceiver station, a radio base station, a radio transceiver, a transceiver function, a basic service set (BSS), an extended service set (ESS), or some other suitable terminology.
- the eNB 206 provides an access point to the EPC 210 for a UE 202.
- Examples of UEs 202 include a cellular phone, a smart phone, a session initiation protocol (SIP) phone, a laptop, a personal digital assistant (PDA), a satellite radio, a global positioning system, a multimedia device, a video device, a digital audio player (e.g., MP3 player), a camera, a game console, or any other similar functioning device.
- SIP session initiation protocol
- PDA personal digital assistant
- the UE 202 may also be referred to by those skilled in the art as a mobile station, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communications device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, or some other suitable terminology.
- the eNB 206 is connected by an SI interface to the EPC 210.
- the EPC 210 includes a Mobility Management Entity (MME) 212, other MMEs 214, a Serving Gateway 216, and a Packet Data Network (PDN) Gateway 218.
- MME Mobility Management Entity
- PDN Packet Data Network
- the MME 212 is the control node that processes the signaling between the UE 202 and the EPC 210.
- the MME 212 provides bearer and connection management. All user IP packets are transferred through the Serving Gateway 216, which itself is connected to the PDN Gateway 218.
- the PDN Gateway 218 provides UE IP address allocation as well as other functions.
- the PDN Gateway 218 is connected to the Operator's IP Services 222.
- the Operator's IP Services 222 include the Internet, the Intranet, an IP Multimedia Subsystem (IMS), and a PS Streaming Service (PSS).
- IMS IP Multimedia Subsystem
- PSS PS Streaming Service
- FIG. 3 is a diagram illustrating an example of an access network in an LTE network architecture.
- the access network 300 is divided into a number of cellular regions (cells) 302.
- One or more lower power class eNBs 308, 312 may have cellular regions 310, 314, respectively, that overlap with one or more of the cells 302.
- the lower power class eNBs 308, 312 may be femto cells (e.g., home eNBs (HeNBs)), pico cells, or micro cells.
- HeNBs home eNBs
- a higher power class or macro eNB 304 is assigned to a cell 302 and is configured to provide an access point to the EPC 210 for all the UEs 306 in the cell 302.
- the eNB 304 is responsible for all radio related functions including radio bearer control, admission control, mobility control, scheduling, security, and connectivity to the serving gateway 216 (see FIG. 2).
- OFDM frequency division duplexing
- TDD time division duplexing
- EV-DO and UMB are air interface standards promulgated by the 3rd Generation Partnership Project 2 (3GPP2) as part of the CDMA2000 family of standards and employs CDMA to provide broadband Internet access to mobile stations. These concepts may also be extended to Universal Terrestrial Radio Access (UTRA) employing Wideband- CDMA (W-CDMA) and other variants of CDMA, such as TD-SCDMA; Global System for Mobile Communications (GSM) employing TDMA; and Evolved UTRA (E-UTRA), Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, and Flash-OFDM employing OFDMA.
- UTRA Universal Terrestrial Radio Access
- W-CDMA Wideband- CDMA
- GSM Global System for Mobile Communications
- E-UTRA Evolved UTRA
- UMB Ultra Mobile Broadband
- IEEE 802.11 Wi-Fi
- WiMAX IEEE 802.16
- IEEE 802.20 Flash-OFDM employing OF
- UTRA, E-UTRA, UMTS, LTE and GSM are described in documents from the 3 GPP organization.
- CDMA2000 and UMB are described in documents from the 3GPP2 organization.
- the actual wireless communication standard and the multiple access technology employed will depend on the specific application and the overall design constraints imposed on the system.
- the eNB 304 may have multiple antennas supporting MIMO technology.
- MIMO technology enables the eNB 304 to exploit the spatial domain to support spatial multiplexing, beamforming, and transmit diversity.
- Spatial multiplexing may be used to transmit different streams of data simultaneously on the same frequency.
- the data steams may be transmitted to a single UE 306 to increase the data rate or to multiple UEs 306 to increase the overall system capacity. This is achieved by spatially precoding each data stream and then transmitting each spatially precoded stream through a different transmit antenna on the downlink.
- the spatially precoded data streams arrive at the UE(s) 306 with different spatial signatures, which enables each of the UE(s) 306 to recover the one or more data streams destined for that UE 306.
- each UE 306 transmits a spatially precoded data stream, which enables the eNB 304 to identify the source of each spatially precoded data stream.
- Beamforming may be used to focus the transmission energy in one or more directions. This may be achieved by spatially precoding the data for transmission through multiple antennas. To achieve good coverage at the edges of the cell, a single stream beamforming transmission may be used in combination with transmit diversity.
- OFDM is a spread-spectrum technique that modulates data over a number of subcarriers within an OFDM symbol.
- the subcarriers are spaced apart at precise frequencies. The spacing provides "orthogonality" that enables a receiver to recover the data from the subcarriers.
- a guard interval e.g., cyclic prefix
- the uplink may use SC-FDMA in the form of a DFT-spread OFDM signal to compensate for high peak-to-average power ratio.
- Various frame structures may be used to support the DL and UL transmissions.
- a structure of a frequency division duplex (FDD) DL radio frame 414 in a conventional LTE design (e.g., one following the 3GPP release 8 standard) will now be presented with reference to FIG. 4.
- the structure of the radio frame 414 for any particular application may be different depending on any number of factors, including the release of 3 GPP standards for LTE systems beyond release 8.
- the smallest addressable unit, called a resource block 408, includes twelve consecutive subcarriers 416 in frequency, and seven consecutive OFDM 418 symbols in time.
- the resource block 408 is thus generally 180 kHz in the frequency domain and 0.5- ms (or one slot 410) in the time domain.
- a sub frame 412 is also the minimum transmission time interval (TTI).
- TTI minimum transmission time interval
- each slot may include one of six different numbers of resource blocks 408 (i.e., 6, 15, 25, 50, 75, or 100 resource blocks 408).
- Six of the resource blocks 408 are generally configured to include information such as synchronization signals (PSS and SSS) and a physical broadcast channel (PBCH).
- PSS and SSS synchronization signals
- PBCH physical broadcast channel
- a 10-ms radio frame 414 is divided into ten 1-ms subframes 412, each subframe 412 including a plurality of resource blocks 408.
- each subframe is further divided in time into two 0.5-ms time slots 410, and each time slot 410 includes a number of OFDM symbols. This number may typically be 6 or 7 OFDM symbols, corresponding to the usage of an extended Cyclic Prefix or a normal Cyclic Prefix.
- Each resource block 408 further is divided in the frequency domain into a number of subcarriers 416, which may be spaced at 7.5 kHz or 15 kHz in different configurations. The total number of subcarriers depends on the channel bandwidth.
- a resource grid 450 may be used to represent resource blocks 408 in a subframe 412.
- the resource grid 450 is divided into multiple resource elements 406.
- a resource block 408 may contain 12 consecutive subcarriers 416 in the frequency domain and, for a normal cyclic prefix in each OFDM symbol, seven consecutive OFDM symbols 418 in the time domain, or 84 resource elements 406. That is, a resource element 406 is essentially one subcarrier and one OFDM symbol.
- a modulation symbol which represents the number of data bits, is mapped to one resource element 406. The number of bits carried by each resource element 406 depends on the modulation scheme. Thus, the more resource blocks 408 that a UE receives and the higher the modulation scheme, the higher the data rate for the UE.
- the UL radio frame 500 may include two subframes 510 each including two slots 520. Further, the radio frame 500 may be divided in frequency into a number of subcarriers 530, such that resource elements 540 include one OFDM symbol and one subcarrier. Resource blocks 550 are blocks of resource elements 540 in one slot 520. Moreover, similar to the DL radio frame, six resource blocks 550 among the resource blocks utilized in the uplink carrier are generally allocated for information such as a physical random access channel (PRACH), etc.
- PRACH physical random access channel
- each slot may be configured to include certain numbers of resource blocks (i.e., 6, 15, 25, 50, 75, or 100 resource blocks, corresponding to, e.g., approximately 1.4, 3, 5, 10, 15, or 20 MHz bandwidths).
- resource blocks i.e., 6, 15, 25, 50, 75, or 100 resource blocks, corresponding to, e.g., approximately 1.4, 3, 5, 10, 15, or 20 MHz bandwidths.
- an eNB when deployed, it typically adopts one of these system bandwidths and transmits signals accordingly.
- other numbers of resource blocks including any number of resource blocks from 6 up to 110, or even more than 110 resource blocks may be allocated to a particular carrier.
- the guard bands, described above, at the edges of the carrier may include additional resource blocks.
- An issue with the utilization of numbers of resource blocks other than the certain numbers described above is that the transmissions are no longer backwards- compatible. That is, if an eNB configured in accordance with a newer standard (e.g., in accordance with 3GPP release 9 or later, herein referred to as "New") signals a value other than the six possible system bandwidths described above, a UE configured in accordance with an earlier standard (e.g., in accordance with 3GPP release 8, hereafter referred to as "R8”) may not be able to handle the request or decode all of the data. However, to increase throughput it may be desired to utilize the increased available system bandwidth in New eNB deployments.
- a newer standard e.g., in accordance with 3GPP release 9 or later, herein referred to as "New
- R8 3GPP release 8
- FIG. 6 illustrates examples of subframes having a bandwidth extension wherein an extended bandwidth, i.e., an additional number of resource blocks, is utilized for transmission on either the uplink or downlink.
- a non-extension portion 612 includes one of the above-described, conventionally specified number of resource blocks, and is therefore recognized by a legacy R8 UE.
- the first extended bandwidth 610 further includes extension portions 614 that are symmetrically distributed at the respective edges of the non-extension portion 612, such that the non-extension portion 612 is centered between the extension portions 614.
- a New UE may be capable of recognizing and decoding the resource blocks within the extension portions 614, thus increasing the throughput for the New UE, in addition to providing a differentiated level of service unavailable to R8 UEs.
- Bandwidths 620 and 630 respectively illustrate other examples to show that the extension portions 624 and 634 need not symmetrically surround the non-extension portion 622 and 632, but may be on either side of the non-extension portion. Of course, other configurations may be utilized within the scope of this disclosure.
- an R8 UE may be signaled to utilize the resource blocks within the non-extension portion, and the New UE may be signaled of the availability of the resource blocks in the extension portion.
- the extension portions of the system bandwidth are only available to the New UEs, and an eNB can maintain backward compatibility with R8 UEs while providing improved and/or differentiated service to New UEs.
- FIG. 7 illustrates a radio frame 700 which may be applicable for either an uplink or downlink transmission.
- the illustrated radio frame 700 may be provided on one of a plurality of carriers.
- the radio frame 700 includes ten subframes 710, each subframe 710 having a bandwidth including an extension portion 720 and a non-extension portion 730 to enable multiplexing for R8 UEs configured in accordance with 3 GPP Release 8 specifications, and New UEs configured in accordance with 3GPP Release 9 or later specifications.
- the radio frame 700 takes the symmetric configuration of the bandwidth 610 illustrated in FIG. 6, however, other configurations are possible within the scope of this disclosure. Returning to FIG.
- the illustrated bandwidth may be considered to provide the extension portions 720 at the respective edges of the non-extension portion 730, e.g., within the guard band for R8 UEs.
- the non-extension portions 730 of subframes 0, 4, 5, and 9 are configured to include data addressed to R8 UEs only;
- the non-extension portions 730 of subframes 1, 3, 6, and 8 are configured to include data addressed to New UEs only;
- the non-extension portions 730 of subframes 2 and 7 are configured to include data addressed to a mix of R8 and New UEs.
- data in each of the extension portions 720 includes data exclusively addressed to New UEs, as these extension portions 720 are not accessible by R8 UEs, as described above.
- the particular layout of these subframes is only given here as an illustrative example; other sequences of data in the non-extension portions 730 may be utilized, or alternatively, all the non-extension portions may be reserved for R8 data or they may all be mixed R8 and New data.
- the above-described radio frame 700 provides for multiplexing of data directed for R8 and New UEs, while providing for improved throughput for New UEs by way of the extension portions 720.
- a R8-type control channel structure is not needed. Indeed, for the extension portions 720, it may be desired not to transmit any control information at all, reserving these portions for data transmissions to New UEs. That is, in an exemplary aspect of the disclosure, scheduling for New UEs may rely on R8 control channels in the non-extension portion 730 of a radio frame.
- downlink control signaling may be located in a control region including the first n OFDM symbols 418 of each subcarrier, where n ⁇ 3 for large system bandwidths (e.g., those with >10 resource blocks), and n ⁇ 4 otherwise. That is, the downlink control signaling (indicated by the shaded resource elements) may be located in OFDM symbols 0, 1, and 2 within the slot 410 labeled slot 0. The remaining OFDM symbols in the subframe (i.e., OFDM symbols 3-6 in slot 0 and OFDM symbols 0-6 in slot 1) are then available as a data region.
- FIG. 8 illustrates several backwards-compatible downlink subframes showing some examples of a control channel structure in accordance with various aspects of the disclosure.
- a non-extension portion includes a control channel portion 811 and a data portion 812.
- the data portion 812 in this example is limited to information directed to R8 UEs.
- Subframe 820 includes an extension portion 823 and a non-extension portion including a control channel portion 821 and a data portion 822.
- the data portion 822 includes a mix of information directed to R8 UEs and information directed to New UEs.
- Subframe 830 includes an extension portion 833 and a non-extension portion 832 that lacks a control portion, such that all of the OFDM symbols are dedicated to a data portion for a mix of R8 and New data.
- the respective extension portions 813, 823, and 833 include New data without any R8 control portion.
- an eNB When utilizing an extended bandwidth as discussed above, it may be desirable for an eNB to provide greater than 110 resource blocks on a downlink transmission.
- an R8 UE is generally limited to receiving 100 resource blocks, in accordance with the 3GPP standards, its transport block size is listed assuming that no more than 110 resource blocks will be transmitted on a carrier.
- the transport block table may require a redesign, which is generally not desired.
- an eNB may provide greater than 110 resource blocks on a downlink transmission while maintaining backwards compatibility with R8 UEs.
- this is enabled by configuring each New UE to monitor less than all resource blocks included on the downlink carrier.
- each New UE monitors only a subset of these resource blocks, i.e., 110 resource blocks.
- an R8 UE monitors 100 of the resource blocks, i.e., those in the non-extension portion, as this is generally its upper limitation according to R8 standards.
- a UE whether it is an R8 UE or a
- New UE monitors only a subset of the system bandwidth provided on a downlink carrier. That is, each UE may only see a portion of the bandwidth provided on the downlink carrier. Furthermore, different UEs may see different parts of the bandwidth provided on the downlink carrier. That is, a subset of New UEs within a cell may see a first portion of the bandwidth, while another subset of the New UEs within the cell may see a second portion of the bandwidth, different from the first portion. Moreover, the size of the respective portions of the bandwidth seen by different subsets of the New UEs within the cell may be the same size (e.g., the same number of resource blocks) or different sizes (e.g., different numbers of resource blocks).
- FIG. 9 is a diagram illustrating three examples of downlink frames 910, 920, and
- the bandwidth as a whole carries greater than 110 resource blocks in this example.
- the extension portions are distributed symmetrically about the non-extension portion, but as described above, other configurations are possible within the scope of this disclosure.
- the first frame 910 includes a non-extension portion having a data region 912 and a control region 911, and an extension portion 913.
- the extension portion 913 is exclusive of R8 resource elements, and is limited to carrying New LTE resource elements.
- the data region 912 can carry R8 resource elements, New resource elements, or a mix of R8 and New resource elements.
- the extension portion 913 carries greater than 10 resource blocks, the total system bandwidth available to a New UE is greater than 110 resource blocks.
- common signaling may be utilized for legacy R8 UEs and for New UEs to indicate the number of available resource blocks, it may be desired to instead limit the number of resource blocks that are indicated as being available to 110.
- the second and third frames 920 and 930 subdivide and allocate their respective extension portions amongst a plurality of New UEs, as discussed below.
- the second frame 920 includes a non-extension portion including a data region
- each of the respective extension portions 923 and 924 may be exclusive of R8 resource elements, and limited to carrying New resource elements.
- the data region 922 may carry R8 resource elements, New resource elements, or a mix of R8 and New resource elements.
- the extension portions 923 and 924 when considered individually or together, may include greater than 10 resource blocks such that the total system bandwidth is greater than 110 resource blocks.
- the first extension portion 923 is allocated to a first subset of the New UEs in the cell
- the second extension portion 924 is allocated to a second subset of the New UEs in the cell.
- the first extension portion 923 may include 10 resource blocks allocated to subset A, which may include one or more New UEs in the cell.
- subset A can receive information included in the non-extension portion and the first extension portion 923 to provide up to 110 resource blocks to a New UE in the first subset A.
- a New UE in the second subset B can receive information included in the non-extension portion and the second extension portion 924 to provide up to 110 resource blocks to the New UE in the second subset B.
- an R8 UE may receive up to 100 resource blocks in the non-extension portion.
- each of the extension portions is described as being of equal size; however, in other examples, the first extension portion 923 may be larger or smaller than the second extension portion 924, such that the subsets A and B may receive different numbers of resource blocks from the same radio frame.
- the effective bandwidth for the subsets A and B may be asymmetrical. That is, because a New UE in one of the subsets is only monitoring one of the extension portions on one edge of the non-extension portion, the six resource blocks configured to include synchronization signals and a physical broadcast channel, which are typically included at the center of the bandwidth of the non-extension portion, are not at the center of the effective bandwidth. While a New UE may be configured to obtain the information in those resource blocks even though they are not in the center of the effective bandwidth, for various reasons it may be desired to configure the frame such that those resource blocks are in the center so that the effective bandwidth is symmetrical.
- the third frame 930 includes a non-extension portion including a data region 932 and a control region 931, and extension portions 933, 934, 935, and 936, configured so that the effective bandwidth is symmetrical. That is, as in frame 920, in frame 930, the respective extension portions are subdivided and allocated to a first subset A of New UEs and a second subset B of New UEs. However, here, the extension portion at the upper part of the non-extension portion is further subdivided between the two subsets A and B, and the extension portion at the lower part of the non-extension portion is subdivided between the two subsets A and B.
- extension portions 934 and 936 are allocated to subset B, and located at the proximate edges of the non-extension portion; and extension portions 933 and 935 are allocated to subset A, and located at the outer edges of the bandwidth of the frame 930.
- a New UE in subset A may be configured to receive information in a symmetrical bandwidth including the non-extension portion and the extension portions 933 and 935 at outer edges of the frame 930.
- a New UE in subset B may be configured to receive information in a symmetrical bandwidth including the non-extension portion and the extension portions 934 and 936 at the proximate edges of the non-extension portion.
- the number of resource blocks allocated to subset A may be the same or different from the number of resource blocks allocated to subset B.
- the number of resource blocks allocated to subset A at the top of the bandwidth in extension portion 933 may be different from the number of resource blocks allocated to subset A at the bottom of the bandwidth in extension portion 935.
- a New UE may be notified of which part or parts of the bandwidth it is to monitor and receive its respective resource blocks.
- the UE may receive explicit signaling identifying a subset of the resource blocks in the extension portion that it should monitor, e.g., by utilizing layer 3 (R C) signaling.
- R C layer 3
- one or more UEs may receive a broadcast message identifying the subset of the resource blocks they should monitor.
- the broadcast message may be a point-to-multipoint transmission commonly received by a plurality of receivers.
- a UE instead of receiving an instruction to monitor a particular subset of the resource blocks, a UE may be specified to only monitor a particular portion of the potentially available bandwidth.
- various UEs may be allocated to various subsets of the potentially available system bandwidth in accordance with a parameter, for example, a characteristic of a UE-specific radio network temporary identifier (R TI).
- R TI radio network temporary identifier
- a first UE with an even-numbered RNTI may monitor a first subset of the resource blocks in the extension portion
- a second UE with an odd-numbered RNTI may monitor a second subset of the resource blocks in the extension portion.
- the even/odd distinction is only one example, and other procedures may be utilized to distribute the resource blocks within the extension portion amongst a number of UEs, with any number of subsets of UEs being utilized.
- system bandwidth is greater than 110 resource blocks
- system bandwidth may be allocated as described above.
- Allocating the system bandwidth to particular subsets of users as described above in various aspects of the disclosure can provide an additional way for a service provider to provide differentiated services to different subsets of users, for example, having premium services only available to certain groups of users who may pay for such premium services. More broadly, aspects of the disclosure provide for multiplexing of system resources among a plurality of subsets of UEs, enabling an improved distribution of system resources among the UEs depending on factors such as system loading. Further, when a UE only monitors a portion of the radio frame, e.g., no more than 110 resource blocks, it can reduce the energy used by a particular UE, in that it may not required to monitor the entire system bandwidth, e.g., greater than 110 resource blocks.
- the radio protocol architecture may take on various forms depending on the particular application.
- An example for an LTE system will now be presented with reference to FIG. 10.
- FIG. 10 is a diagram illustrating an example of the radio protocol architecture for the user and control planes.
- Layer 1 is the lowest layer and implements various physical layer signal processing functions. Layer 1 will be referred to herein as the physical layer 1006.
- Layer 2 (L2 layer) 1008 is above the physical layer 1006 and is responsible for the link between the UE and eNB over the physical layer 1006.
- the L2 layer 1008 includes a media access control (MAC) sublayer 1010, a radio link control (RLC) sublayer 1012, and a packet data convergence protocol (PDCP) 1014 sublayer, which are terminated at the eNB on the network side.
- MAC media access control
- RLC radio link control
- PDCP packet data convergence protocol
- the UE may have several upper layers above the L2 layer 1008 including a network layer (e.g., IP layer) that is terminated at the PDN gateway 208 (see FIG. 2) on the network side, and an application layer that is terminated at the other end of the connection (e.g., far end UE, server, etc.).
- IP layer e.g., IP layer
- the PDCP sublayer 1014 provides multiplexing between different radio bearers and logical channels.
- the PDCP sublayer 1014 also provides header compression for upper layer data packets to reduce radio transmission overhead, security by ciphering the data packets, and handover support for UEs between eNBs.
- the RLC sublayer 1012 provides segmentation and reassembly of upper layer data packets, retransmission of lost data packets, and reordering of data packets to compensate for out-of-order reception due to hybrid automatic repeat request (HARQ).
- HARQ hybrid automatic repeat request
- the MAC sublayer 1010 provides multiplexing between logical and transport channels.
- the MAC sublayer 1010 is also responsible for allocating the various radio resources (e.g., resource blocks) in one cell among the UEs.
- the MAC sublayer 1010 is also responsible for HARQ operations.
- the radio protocol architecture for the UE and eNB is substantially the same for the physical layer 1006 and the L2 layer 1008 with the exception that there is no header compression function for the control plane.
- the control plane also includes a radio resource control (RRC) sublayer 1016 in Layer 3.
- RRC sublayer 1016 is responsible for obtaining radio resources (i.e., radio bearers) and for configuring the lower layers using RRC signaling between the eNB and the UE.
- FIG. 11 is a block diagram of an eNB 1110 in communication with a UE 1150 in an access network.
- a controller/processor 1175 implements the functionality of the L2 layer described earlier in connection with FIG. 10.
- the controller/processor 1175 provides header compression, ciphering, packet segmentation and reordering, multiplexing between logical and transport channels, and radio resource allocations to the UE 1150 based on various priority metrics.
- the controller/processor 1175 is also responsible for HARQ operations, retransmission of lost packets, and signaling to the UE 1150.
- the TX processor 1116 implements various signal processing functions for the
- the signal processing functions includes coding and interleaving to facilitate forward error correction (FEC) at the UE 1150 and mapping to signal constellations based on various modulation schemes (e.g., binary phase- shift keying (BPSK), quadrature phase-shift keying (QPSK), M-phase-shift keying (M-PSK), M-quadrature amplitude modulation (M-QAM)).
- FEC forward error correction
- BPSK binary phase- shift keying
- QPSK quadrature phase-shift keying
- M-PSK M-phase-shift keying
- M-QAM M-quadrature amplitude modulation
- Each stream is then mapped to an OFDM subcarrier, multiplexed with a reference signal (e.g., pilot) in the time and/or frequency domain, and then combined together using an Inverse Fast Fourier Transform (IFFT) to produce a physical channel carrying a time domain OFDM symbol stream.
- the OFDM stream is spatially precoded to produce multiple spatial streams.
- Channel estimates from a channel estimator 1174 may be used to determine the coding and modulation scheme, as well as for spatial processing.
- the channel estimate may be derived from a reference signal and/or channel condition feedback transmitted by the UE 1150.
- Each spatial stream is then provided to a different antenna 1120 via a separate transmitter 1118TX.
- Each transmitter 1118TX modulates an RF carrier with a respective spatial stream for transmission.
- each receiver 1154RX receives a signal through its respective antenna 1152.
- Each receiver 1154RX recovers information modulated onto an RF carrier and provides the information to the receiver (RX) processor 1156.
- the RX processor 1156 implements various signal processing functions of the
- the RX processor 1156 performs spatial processing on the information to recover any spatial streams destined for the UE 1150. If multiple spatial streams are destined for the UE 1150, they may be combined by the RX processor 1156 into a single OFDM symbol stream. The RX processor 1156 then converts the OFDM symbol stream from the time-domain to the frequency domain using a Fast Fourier Transform (FFT).
- FFT Fast Fourier Transform
- the frequency domain signal comprises a separate OFDM symbol stream for each subcarrier of the OFDM signal.
- the symbols on each subcarrier, and the reference signal is recovered and demodulated by determining the most likely signal constellation points transmitted by the eNB 1110. These soft decisions may be based on channel estimates computed by the channel estimator 1158. The soft decisions are then decoded and deinterleaved to recover the data and control signals that were originally transmitted by the eNB 1110 on the physical channel.
- the data and control signals are then provided to the controller/processor 1159.
- the controller/processor 1159 implements the L2 layer described earlier in connection with FIG. 10.
- the control/processor 1159 provides demultiplexing between transport and logical channels, packet reassembly, deciphering, header decompression, control signal processing to recover upper layer packets from the core network.
- the upper layer packets are then provided to a data sink 1162, which represents all the protocol layers above the L2 layer.
- Various control signals may also be provided to the data sink 1162 for L3 processing.
- the controller/processor 1159 is also responsible for error detection using an acknowledgement (ACK) and/or negative acknowledgement (NACK) protocol to support HARQ operations.
- ACK acknowledgement
- NACK negative acknowledgement
- a data source 1167 is used to provide upper layer packets to the controller/processor 1159.
- the data source 1167 represents all protocol layers above the L2 layer (L2).
- the controller/processor 1159 implements the L2 layer for the user plane and the control plane by providing header compression, ciphering, packet segmentation and reordering, and multiplexing between logical and transport channels based on radio resource allocations by the eNB 1110.
- the controller/processor 1159 is also responsible for HARQ operations, retransmission of lost packets, and signaling to the eNB 1110.
- Channel estimates derived by a channel estimator 1158 from a reference signal or feedback transmitted by the eNB 1110 may be used by the TX processor 1168 to select the appropriate coding and modulation schemes, and to facilitate spatial processing.
- the spatial streams generated by the TX processor 1168 are provided to different antenna 1152 via separate transmitters 1154TX. Each transmitter 1154TX modulates an RF carrier with a respective spatial stream for transmission.
- the UL transmission is processed at the eNB 1110 in a manner similar to that described in connection with the receiver function at the UE 1150.
- Each receiver 1118RX receives a signal through its respective antenna 1120.
- Each receiver 1118RX recovers information modulated onto an RF carrier and provides the information to a RX processor 1170.
- the RX processor 1170 implements the LI layer.
- the controller/processor 1159 implements the L2 layer described earlier in connection with FIG. 10. In the UL, the control/processor 1159 provides demultiplexing between transport and logical channels, packet reassembly, deciphering, header decompression, control signal processing to recover upper layer packets from the UE 1150. Upper layer packets from the controller/processor 1175 may be provided to the core network.
- the controller/processor 1159 is also responsible for error detection using an ACK and/or NACK protocol to support HARQ operations.
- the processing system 114 described in relation to FIG. 1 may include the eNB
- the processing system 114 may include the TX processor 1116, the RX processor 1170, and the controller/processor 1175. Further, the processing system 114 described in relation to FIG. 1 may include the UE 1150. In particular, the processing system 114 may include the TX processor 1168, the RX processor 1156, and the controller/processor 1159.
- FIG. 12 includes two flow charts 1200 and 1250 that illustrate respective methods of wireless communication in accordance with certain aspects of the disclosure.
- a UE e.g., UE 1150, see FIG. 11
- a UE may receive an indication of a first system bandwidth from a corresponding eNB (e.g., eNB 1110, see FIG. 11).
- the indication may be an explicit instruction such as a UE-specific unicast message, e.g., utilizing layer 3 RRC signaling; the indication may be a broadcast message directed to a number of UEs as a point-to-multipoint message; or the indication may be implicitly derived based at least in part on a characteristic of a UE-specific RNTI.
- the UE may receive an indication of a second system bandwidth from the corresponding eNB.
- the indication of the second system bandwidth may be provided in a similar fashion as the first indication, to indicate the extent of the extended bandwidth.
- the UE may communicate with the corresponding eNB based on the first system bandwidth, e.g., the portion of the second bandwidth allocated to the UE.
- an eNB e.g., eNB 1110, see FIG.
- the eNB determines a first system bandwidth, including a portion of a second system bandwidth (e.g., an extended bandwidth).
- the eNB transmits an indication of the first system bandwidth to a corresponding UE. As discussed immediately above, this indication may be UE-specific signaling, may be a broadcast message, or may be implicitly included in an RNTI assignment, in accordance with various aspects of the disclosure.
- the eNB may transmit an indication of the second system bandwidth in accordance with various aspects of the disclosure.
- the eNB communicates with the corresponding UE based on the first system bandwidth, e.g., the portion of the second bandwidth allocated to the UE.
- the apparatus 100 (e.g., the eNB 1110) includes means for determining a first system bandwidth including a portion of resource blocks associated with a second system bandwidth, the second system bandwidth including an extension portion and a non-extension portion, means for transmitting an indication of the first system bandwidth, and means for communicating with a user equipment based on the first system bandwidth.
- the aforementioned means may be the processing system 114 configured to perform the functions recited by the aforementioned means.
- the processing system 114 may include the TX Processor 1116, the RX Processor 1170, and the controller/processor 1175.
- the aforementioned means may be the TX Processor 1116, the RX Processor 1170, and the controller/processor 1175 configured to perform the functions recited by the aforementioned means.
- the apparatus 100 for wireless communication includes means for receiving from a base station an indication of a first system bandwidth, the first system bandwidth including a portion of resource blocks associated with a second system bandwidth configured by the base station, the second system bandwidth including a non-extension portion and an extension portion, and means for communicating with the base station based on the first system bandwidth.
- the aforementioned means may be the processing system 114 configured to perform the functions recited by the aforementioned means.
- the processing system 114 may include the TX Processor 1168, the RX Processor 1156, and/or the controller/processor 1159.
- the aforementioned means may be the TX Processor 1168, the RX Processor 1156, and the controller/processor 1159 configured to perform the functions recited by the aforementioned means.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020127012530A KR101432774B1 (en) | 2009-10-15 | 2010-10-15 | System and method for allocating resources in an extended bandwidth wireless network |
JP2012534430A JP2013509047A (en) | 2009-10-15 | 2010-10-15 | System and method for resource allocation in extended bandwidth |
CN201080046049.0A CN102577220B (en) | 2009-10-15 | 2010-10-15 | For the system and method for Resources allocation in spread bandwidth wireless network |
EP10770686.3A EP2489148B1 (en) | 2009-10-15 | 2010-10-15 | System and method for allocating resources in an extended bandwidth wireless network |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US25210609P | 2009-10-15 | 2009-10-15 | |
US61/252,106 | 2009-10-15 | ||
US12/904,674 US8542605B2 (en) | 2009-10-15 | 2010-10-14 | System and method for allocating resources in an extended bandwidth wireless network |
US12/904,674 | 2010-10-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2011047357A1 true WO2011047357A1 (en) | 2011-04-21 |
Family
ID=43432175
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2010/052969 WO2011047357A1 (en) | 2009-10-15 | 2010-10-15 | System and method for allocating resources in an extended bandwidth wireless network |
Country Status (7)
Country | Link |
---|---|
US (1) | US8542605B2 (en) |
EP (1) | EP2489148B1 (en) |
JP (3) | JP2013509047A (en) |
KR (1) | KR101432774B1 (en) |
CN (1) | CN102577220B (en) |
TW (1) | TW201125408A (en) |
WO (1) | WO2011047357A1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013515452A (en) * | 2009-12-21 | 2013-05-02 | クゥアルコム・インコーポレイテッド | Method and apparatus for resource allocation by carrier extension |
CN103701744A (en) * | 2012-09-27 | 2014-04-02 | 普天信息技术研究院有限公司 | Interference detection method and device |
WO2014109566A1 (en) * | 2013-01-09 | 2014-07-17 | 엘지전자 주식회사 | Method and user equipment for receiving signal and method and base station for transmitting signal |
WO2015023604A1 (en) * | 2013-08-11 | 2015-02-19 | Coherent Logix, Incorporated | Broadcast/broadband convergence network |
US9673952B2 (en) | 2009-04-10 | 2017-06-06 | Qualcomm Inc. | Method and apparatus for supporting user equipments on different system bandwidths |
Families Citing this family (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101591829B1 (en) * | 2009-07-17 | 2016-02-04 | 엘지전자 주식회사 | Method of transmitting and receiving channel bandwidth information in a wireless communication system |
US8542605B2 (en) * | 2009-10-15 | 2013-09-24 | Qualcomm Incorporated | System and method for allocating resources in an extended bandwidth wireless network |
US9160513B2 (en) * | 2011-07-28 | 2015-10-13 | Qualcomm Incorporated | Method and apparatus for signaling control data of aggregated carriers |
US9209955B2 (en) * | 2011-10-11 | 2015-12-08 | Qualcomm Incorporated | Extension carrier as a bandwidth extension |
ES2749515T3 (en) * | 2012-11-02 | 2020-03-20 | Ericsson Telefon Ab L M | Flexible spectrum support in cellular wireless communications |
US8971906B2 (en) * | 2013-01-17 | 2015-03-03 | Qualcomm Incorporated | Hybrid interference alignment for mixed macro-FEMTO base station downlink |
CN110461014B (en) * | 2013-03-28 | 2024-03-15 | 华为技术有限公司 | Bandwidth allocation method, device, user equipment and base station |
JP6298263B2 (en) * | 2013-09-26 | 2018-03-20 | 株式会社Nttドコモ | Wireless base station, user terminal, and wireless communication method |
US10149292B2 (en) * | 2014-09-24 | 2018-12-04 | Qualcomm Incorporated | Systems and methods for efficient resource allocation in wireless communication networks |
US20160219584A1 (en) * | 2015-01-22 | 2016-07-28 | Texas Instruments Incorporated | High performance nlos wireless backhaul frame structure |
US10631352B2 (en) * | 2015-04-13 | 2020-04-21 | Telefonaktiebolaget Lm Ericsson (Publ) | Joint WAN and sidelink transmission methods for device-to-device capable user equipment |
JP6698702B2 (en) | 2015-05-22 | 2020-05-27 | リニアー テクノロジー エルエルシー | Low power sensor node operation in wireless network |
US20180077689A1 (en) * | 2016-09-15 | 2018-03-15 | Qualcomm Incorporated | Multiple bandwidth operation |
WO2018079572A1 (en) * | 2016-10-28 | 2018-05-03 | 株式会社Nttドコモ | User terminal and wireless communication method |
US10764871B2 (en) * | 2017-01-16 | 2020-09-01 | Qualcomm Incorporated | Extension of data transmission from ULRB to ULCB |
JP2020506645A (en) * | 2017-01-25 | 2020-02-27 | 日本電気株式会社 | Method and apparatus for indicating resource allocation |
US10334601B2 (en) * | 2017-03-24 | 2019-06-25 | Qualcomm Incorporated | Techniques for dual-mode operations in new radio |
US10555310B2 (en) | 2017-05-01 | 2020-02-04 | Qualcomm Incorporated | Forward compatibility in new radio systems |
US10554262B2 (en) * | 2017-05-12 | 2020-02-04 | Qualcomm Incorporated | Cross-sub-band quasi co-location signaling |
CN110831198B (en) * | 2018-08-10 | 2024-02-02 | 华为技术有限公司 | Bandwidth resource switching method, indication bandwidth resource switching method, terminal and network equipment |
KR20200043924A (en) | 2018-10-18 | 2020-04-28 | 연세대학교 산학협력단 | Method for enhancing stemness of mesoderm-derived human adult stem cells by exposure of non-thermal atmospheric pressure plasma |
CN109548087B (en) * | 2018-12-19 | 2023-02-03 | 新华三技术有限公司成都分公司 | Communication method and device |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010049754A1 (en) * | 2008-10-28 | 2010-05-06 | Nokia Corporation | Physical downlink control channel configuration for extended bandwidth systems |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7173919B1 (en) * | 1999-06-11 | 2007-02-06 | Texas Instruments Incorporated | Random access preamble coding for initiation of wireless mobile communications sessions |
US7070472B2 (en) * | 2001-08-29 | 2006-07-04 | Motorola, Inc. | Field emission display and methods of forming a field emission display |
ATE295057T1 (en) * | 2003-03-10 | 2005-05-15 | Cit Alcatel | METHOD FOR ROUTING MESSAGES BETWEEN MOBILE AND CELL CONTROL FUNCTIONAL UNITS FROM A DISTRIBUTED RADIO ACCESS NETWORK |
US7970602B2 (en) * | 2005-02-24 | 2011-06-28 | Panasonic Corporation | Data reproduction device |
US20070232349A1 (en) * | 2006-04-04 | 2007-10-04 | Jones Alan E | Simultaneous dual mode operation in cellular networks |
JP2008172366A (en) * | 2007-01-09 | 2008-07-24 | Sharp Corp | Base station device, terminal device, program, control information transmission method, and control information reception method |
JP2008244559A (en) * | 2007-03-26 | 2008-10-09 | Sharp Corp | Mobile station device, base station device, radio communication system, control information receiving method, control information transmission method and program |
US8861549B2 (en) | 2007-11-05 | 2014-10-14 | Telefonaktiebolaget Lm Ericsson (Publ) | Multiple compatible OFDM systems with different bandwidths |
EP2209224A4 (en) * | 2007-11-07 | 2013-06-26 | Alcatel Lucent Shanghai Bell | Method and device for scheduling resource between different tdd systems |
US8130847B2 (en) * | 2007-11-09 | 2012-03-06 | Motorola Mobility, Inc. | Closed-loop transmission feedback in wireless communication systems |
WO2009072842A2 (en) * | 2007-12-05 | 2009-06-11 | Lg Electronics Inc. | Method of allocating resources in wireless communication system |
US7688245B2 (en) * | 2008-07-11 | 2010-03-30 | Infineon Technologies Ag | Method for quantizing of signal values and quantizer |
US9225481B2 (en) * | 2008-08-11 | 2015-12-29 | Qualcomm Incorporated | Downlink grants in a multicarrier wireless communication system |
US8542605B2 (en) * | 2009-10-15 | 2013-09-24 | Qualcomm Incorporated | System and method for allocating resources in an extended bandwidth wireless network |
-
2010
- 2010-10-14 US US12/904,674 patent/US8542605B2/en not_active Expired - Fee Related
- 2010-10-15 KR KR1020127012530A patent/KR101432774B1/en active IP Right Grant
- 2010-10-15 WO PCT/US2010/052969 patent/WO2011047357A1/en active Application Filing
- 2010-10-15 CN CN201080046049.0A patent/CN102577220B/en not_active Expired - Fee Related
- 2010-10-15 TW TW099135288A patent/TW201125408A/en unknown
- 2010-10-15 JP JP2012534430A patent/JP2013509047A/en active Pending
- 2010-10-15 EP EP10770686.3A patent/EP2489148B1/en not_active Not-in-force
-
2014
- 2014-08-21 JP JP2014168528A patent/JP2015015735A/en active Pending
-
2015
- 2015-11-18 JP JP2015225804A patent/JP6356110B2/en not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010049754A1 (en) * | 2008-10-28 | 2010-05-06 | Nokia Corporation | Physical downlink control channel configuration for extended bandwidth systems |
Non-Patent Citations (2)
Title |
---|
HUAWEI: "Concept for downlink carrier aggregation in LTE-Advanced", 3GPP DRAFT; R1-083703, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, no. Prague, Czech Republic; 20080924, 24 September 2008 (2008-09-24), XP050317045 * |
QUALCOMM EUROPE: "Carrier Aggregation Operation in LTE-Advanced", 3GPP DRAFT; R1-083811, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, no. Prague, Czech Republic; 20080924, 24 September 2008 (2008-09-24), XP050317135 * |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9673952B2 (en) | 2009-04-10 | 2017-06-06 | Qualcomm Inc. | Method and apparatus for supporting user equipments on different system bandwidths |
JP2013515452A (en) * | 2009-12-21 | 2013-05-02 | クゥアルコム・インコーポレイテッド | Method and apparatus for resource allocation by carrier extension |
CN103701744A (en) * | 2012-09-27 | 2014-04-02 | 普天信息技术研究院有限公司 | Interference detection method and device |
CN103701744B (en) * | 2012-09-27 | 2016-12-21 | 普天信息技术研究院有限公司 | A kind of interference detection method and device |
WO2014109566A1 (en) * | 2013-01-09 | 2014-07-17 | 엘지전자 주식회사 | Method and user equipment for receiving signal and method and base station for transmitting signal |
US9756656B2 (en) | 2013-01-09 | 2017-09-05 | Lg Electronics Inc. | Method and user equipment for receiving signal and method and base station for transmitting signal |
WO2015023604A1 (en) * | 2013-08-11 | 2015-02-19 | Coherent Logix, Incorporated | Broadcast/broadband convergence network |
US10567971B2 (en) | 2013-08-11 | 2020-02-18 | Coherent Logix, Incorporated | Broadcast/broadband convergence network |
Also Published As
Publication number | Publication date |
---|---|
JP2013509047A (en) | 2013-03-07 |
CN102577220A (en) | 2012-07-11 |
JP2015015735A (en) | 2015-01-22 |
CN102577220B (en) | 2015-11-25 |
US8542605B2 (en) | 2013-09-24 |
US20110090809A1 (en) | 2011-04-21 |
KR101432774B1 (en) | 2014-08-21 |
EP2489148A1 (en) | 2012-08-22 |
JP6356110B2 (en) | 2018-07-11 |
KR20120085809A (en) | 2012-08-01 |
TW201125408A (en) | 2011-07-16 |
EP2489148B1 (en) | 2019-06-05 |
JP2016067019A (en) | 2016-04-28 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US8542605B2 (en) | System and method for allocating resources in an extended bandwidth wireless network | |
US9247547B2 (en) | Downlink and uplink resource element mapping for carrier extension | |
US10200985B2 (en) | Methods and apparatus for managing control and data transmissions for low cost user equipments | |
US20190028250A1 (en) | Managing cross-carrier scheduling in carrier aggregation with epdcch in lte | |
CN108964841B (en) | Method and apparatus for transport block size determination for new carrier types in LTE | |
US8780826B2 (en) | Continuous CDM/FDM structure for LTE uplink data | |
WO2015148001A1 (en) | Methods and apparatus for ul dm-rs overhead reduction | |
EP2502455A1 (en) | Subframe dependent transmission mode in lte-advanced | |
KR20200019785A (en) | METHOD AND APPARATUS FOR EFFICIENT USAGE OF DAI BITS FOR eIMTA IN LTE | |
WO2014168846A1 (en) | Methods and apparatus for employing multiple subframe configurations for harq operations | |
US9860888B2 (en) | UE category handling | |
US9775071B2 (en) | TDD configurations and eIMTA in LTE | |
EP2896152A1 (en) | Uplink ack/nack bundling enhancement for lte tdd enhanced interference management and traffic adaptation |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 201080046049.0 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 10770686 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2944/CHENP/2012 Country of ref document: IN |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2012534430 Country of ref document: JP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2010770686 Country of ref document: EP |
|
ENP | Entry into the national phase |
Ref document number: 20127012530 Country of ref document: KR Kind code of ref document: A |