WO2014146427A1 - Procédé et appareil d'optimisation de rapport snpl - Google Patents

Procédé et appareil d'optimisation de rapport snpl Download PDF

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Publication number
WO2014146427A1
WO2014146427A1 PCT/CN2013/085168 CN2013085168W WO2014146427A1 WO 2014146427 A1 WO2014146427 A1 WO 2014146427A1 CN 2013085168 W CN2013085168 W CN 2013085168W WO 2014146427 A1 WO2014146427 A1 WO 2014146427A1
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WIPO (PCT)
Prior art keywords
snpl
report
value
adjustment amount
processor
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PCT/CN2013/085168
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English (en)
Inventor
Insung Kang
Surendra Boppana
Chao JIN
Yong Xie
Shaiau-He Shawn TSAI
Zhibin DANG
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Qualcomm Incorporated
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Publication of WO2014146427A1 publication Critical patent/WO2014146427A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H04W36/0085—Hand-off measurements
    • H04W36/0088—Scheduling hand-off measurements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/14—Reselecting a network or an air interface
    • H04W36/142—Reselecting a network or an air interface over the same radio air interface technology

Definitions

  • PCT/CN/2013/072883 entitled "METHOD AND APPARATUS FOR OPTIMIZING SNPL REPORTrNG" filed March 19, 2013, in the Receiving Office of China (RO/CN), and assigned to the assignee hereof and hereby expressly incorporated by reference herein.
  • aspects of the present disclosure relate generally to wireless communication systems, and more particularly, to an apparatus and method for optimizing Serving Neighboring cell Path Loss (SNPL) reporting to maximize High-Speed Uplink Packet Access (HSUPA) throughput, thereby providing consistent service in a wireless communication system.
  • SNPL Serving Neighboring cell Path Loss
  • HSUPA High-Speed Uplink Packet Access
  • Wireless communication networks are widely deployed to provide various communication services such as telephony, video, data, messaging, broadcasts, and so on.
  • Such networks which are usually multiple access networks, support communications for multiple users by sharing the available network resources.
  • UTRAN UMTS Terrestrial Radio Access Network
  • the UTRAN is the radio access network (RAN) defined as a part of the Universal Mobile Telecommunications System (UMTS), a third generation (3G) mobile phone technology supported by the 3rd Generation Partnership Project (3GPP).
  • UMTS Universal Mobile Telecommunications System
  • 3GPP 3rd Generation Partnership Project
  • the UMTS which is the successor to Global System for Mobile Communications (GSM) technologies, currently supports various air interface standards, such as Wideband- Code Division Multiple Access (W-CDMA), Time Division-Code Division Multiple Access (TD-CDMA), and Time Division-Synchronous Code Division Multiple Access (TD-SCDMA).
  • W-CDMA Wideband- Code Division Multiple Access
  • TD-CDMA Time Division-Code Division Multiple Access
  • TD-SCDMA Time Division-Synchronous Code Division Multiple Access
  • the UMTS also supports enhanced 3G data communications protocols, such as High Speed Packet Access (HSPA), which provides higher data transfer speeds and capacity to associated UMTS networks.
  • HSPA High Speed Packet Access
  • Such networks which are usually multiple access networks, support communications for multiple users, via wireless connected devices, by sharing the available network resources.
  • the choice of radio access is mostly determined by availability, application usage, and a preference to reduce dependence on cellular networks.
  • UE user equipment
  • Methods and apparatus for wireless communication for optimizing SNPL reporting to maximize HSUPA throughput relate to calculating a SNPL value at a UE and optimizing the SNPL value according to an optimized adjustment amount. The UE then generates a SNPL report based on the optimized SNPL value and transmits the SNPL report to a network.
  • a method for optimizing SNPL reporting to maximize HSUPA throughput includes calculating a SNPL value at a UE. Further, the method includes calculating an adjustment amount for the SNPL value via a SNPL optimization algorithm and optimizing the SNPL value based on the adjustment amount calculated by the SNPL optimization algorithm. Additionally, the method includes generating the SNPL report based on the optimized SNPL value and transmitting the SNPL report to a network.
  • the apparatus includes a processor configured to calculate a SNPL value at a UE. Further, the processor is configured to calculate an adjustment amount for the SNPL value via a SNPL optimization algorithm and optimize the SNPL value based on the adjustment amount calculated by the SNPL optimization algorithm. Additionally, the processor is configured to generate the SNPL report based on the optimized SNPL value and transmit the SNPL report to a network.
  • HSUPA throughput includes means for calculating a SNPL value at a UE. Further, the apparatus includes means for calculating an adjustment amount for the SNPL value via a SNPL optimization algorithm and means for optimizing the SNPL value based on the adjustment amount calculated by the SNPL optimization algorithm. Additionally, the apparatus includes means for generating the SNPL report based on the optimized SNPL value and means for transmitting the SNPL report to a network.
  • a computer-readable media for optimizing SNPL reporting to maximize HSUPA throughput includes machine- executable code for calculating a SNPL value at a UE. Further, the code may be executable for calculating an adjustment amount for the SNPL value via a SNPL optimization algorithm and executable for optimizing the SNPL value based on the adjustment amount calculated by the SNPL optimization algorithm. Additionally, the code may be executable for generating the SNPL report based on the optimized SNPL value and executable for transmitting the SNPL report to a network.
  • the one or more aspects comprise the features hereinafter fully described and particularly pointed out in the claims.
  • the following description and the annexed drawings set forth in detail certain illustrative features of the one or more aspects. These features are indicative, however, of but a few of the various ways in which the principles of various aspects may be employed, and this description is intended to include all such aspects and their equivalents.
  • FIG. 1 is a schematic diagram illustrating an example aspect of call processing in a wireless communication system
  • FIG. 2 is a schematic diagram illustrating another exemplary aspect of call processing in a wireless communication system
  • FIG. 3 is a flow diagram illustrating the exemplary method for call processing in a wireless communication system
  • FIG. 4 is another flow diagram illustrating the exemplary method for call processing in a wireless communication system
  • FIG. 5 is a block diagram illustrating additional example components of an aspect of a computer device having a call processing component according to the present disclosure
  • FIG. 6 is a block diagram illustrating an example of a hardware implementation for an apparatus employing a processing system to perform the functions described herein;
  • FIG. 7 is a block diagram conceptually illustrating an example of a telecommunications system including a UE configured to perform the functions described herein;
  • FIG. 8 is a conceptual diagram illustrating an example of an access network for use with a UE configured to perform the functions described herein;
  • FIG. 9 is a conceptual diagram illustrating an example of a radio protocol architecture for the user and control planes for a base station and/or a UE configured to perform the functions described herein;
  • FIG. 10 is a block diagram conceptually illustrating an example of a Node B in communication with a UE in a telecommunications system configured to perform the functions described herein.
  • the UE may be granted a higher grant than other UEs.
  • the higher grant for the UE may result in higher UP A throughput for the UE.
  • HSUPA throughput may be limited by the grant even though UPH indicated that a UE should receive a higher grant and support for higher enhanced-uplink dedicated channel (E-DCH) transport format combination indicator (ETFCI).
  • E-DCH enhanced-uplink dedicated channel
  • EFCI transport format combination indicator
  • a wireless communication system 100 is configured to facilitate transmitting vast amount of data from a mobile device to a network.
  • Wireless communication system 100 includes at least one UE 114 that may communicate wirelessly with one or more network 112 via serving nodes, including, but not limited to, wireless serving node 116 over one or more wireless link 125.
  • the one or more wireless link 125 may include, but are not limited to, signaling radio bearers and/or data radio bearers.
  • Wireless serving node 116 may be configured to transmit one or more signals 123 to UE 114 over the one or more wireless link 125, and/or UE 1 14 may transmit one or more signals 124 to wireless serving node 116.
  • signal 123 and signal 124 may include, but are not limited to, one or more messages, such as transmitting a data from the UE 114 to the network via wireless serving node 116.
  • UE 114 may comprise a mobile apparatus and may be referred to as such throughout the present disclosure. Such a mobile apparatus or UE 114 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 terminal, a user agent, a mobile client, a client, or some other suitable terminology.
  • a mobile apparatus or UE 114 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
  • the one or more wireless nodes may include one or more of any type of network component, such as an access point, including a base station or node B, a relay, a peer-to-peer device, an authentication, authorization and accounting (AAA) server, a mobile switching center (MSC), a radio network controller (R C), etc.
  • the one or more wireless serving nodes of wireless communication system 100 may include one or more small base stations, such as, but not limited to a femtocell, picocell, microcell, or any other small base station.
  • a wireless communication system 100 is configured to include wireless communications between network 112 and UE 114.
  • the wireless communications system may be configured to support communications between a number of users.
  • Fig. 2 illustrates a manner in which network 112 communicates with UE 114 over wireless link 125.
  • the wireless communication system 100 can be configured for downlink message transmission or uplink message transmission, as represented by the up/down arrows between network 112 and UE 114.
  • a call processing component 150 within the network 112 resides a call processing component 150.
  • Call processing component 150 may be configured, among other things, to include a SNPL receiving component 152 capable of receiving a SNPL report from a UE.
  • SNPL receiving component 152 of located within network 112 is configured to receive optimized SNPL report 162 from UE 114 over wireless link 125.
  • the SNPL report 162 has been optimized by the process discussed below.
  • the call processing component 150 may be configured to include a resource grant calculating component 154 capable of calculating a resource grant for the UE based on the SNPL report.
  • resource grant calculating component 154 is configured to calculate resource grant 155 for UE 114 based on SNPL report 162.
  • resource grant calculating component 154 When calculating resource grant 155 for UE 114 based on SNPL report 162 for UE 114, resource grant calculating component 154 utilizes the following equation 1 :
  • Pe-base + ⁇ - SNPL ⁇ N 0 + RoT, where ⁇ min ( ⁇ ⁇ UPH) [0034] It should be noted that that P e -base is the power at nodeB and may be calculated as RxPWR - fisTFCi, No is the thermal noise, and RoT is the rise-over -thermal noise and is nodeB dependent.
  • resource grant calculating component 154 utilizes the equation
  • resource grant calculating component 154 may be able to calculate whether to increase or decrease a resource grant to a UE based on the SNPL report. For example, at the cell site of UE 114 where the SNPL is high, resource grant calculating component 154 increases the resource grant 155 to be allotted to UE 114. However, at the cell edge of UE 114 where the SNPL is low, resource grant calculating component 154 decreases the resource grant 155 to be allotted to UE 114.
  • call processing component 150 may be configured to include resource grant transmitting component 156 capable of transmitting the resource grant to the UE.
  • resource grant transmitting component 156 is configured to transmit resource grant 155 to UE 114 over wireless link 125.
  • a call processing component 140 within the UE 114 resides a call processing component 140.
  • Call processing component 140 may be configured, among other things, to include a SNPL calculating component 142 capable of calculating a SNPL value at a UE.
  • SNPL calculating component 142 is configured to calculate SNPL value 143 at UE 114.
  • Call processing component 140 may be configured to include an adjustment amount calculating component 144 capable of calculating an adjustment amount for the SNPL value via a SNPL optimization algorithm.
  • adjustment amount calculating component 144 is configured to calculate adjustment amount 145 for SNPL value 143 via optimization algorithm 147.
  • Optimizing algorithm 147 calculates the adjustment amount 145 to optimize SNPL value 143 according to equation 2:
  • AsNPL (l-O.) *AsNPL + ⁇ supported - ⁇ grant when ⁇ supported > ⁇ grant
  • ASNPL (1-a) *ASNPL + 0, otherwise [0040]
  • a is the filter co-efficient
  • SNPL OPTIMIZED SNPL ca i c
  • a S NPL SNPL ca i c
  • a S NPL ⁇ supported and ⁇ grant are values in the dB domain.
  • mapping SNPL op ti m i ze d (denoted as Q in the following table) to the SNPL index reported to the network:
  • adjustment amount calculating component 144 only calculates an adjustment amount 145 (SNPL ca i c ) for SNPL value 143 when resource grant 155 given to UE 1 14 is limited and where there is an acknowledgment of available resource grants from network 1 12. However, when there is a non-acknowledgment of available resource grants from network 1 12, adjustment amount calculating component 144 does not calculate adjustment amount 145 (SNPL ca i c ) for SNPL value 143.
  • the SNPL value 143 may be adjusted only when the buffer of UE 1 14 is full.
  • the ASNPL may be limited. In other words, to reduce excessive interference during communication of UE 1 14 with network 1 12, there is a limit on the maximum value of the calculated adjustment amount 145 (SNPL CALC ).
  • Call processing component 140 may be configured to include a SNPL optimizing component 146 capable of optimizing the SNPL value based on the adjustment amount calculated by the SNPL optimization algorithm.
  • SNPL optimizing component 146 is configured to optimize SNPL value 143 based on adjustment amount 145 calculated by optimization algorithm 147.
  • Call processing component 140 may be configured to include a SNPL report generating component 148 capable of generating the SNPL report based on the optimized SNPL value.
  • SNPL report generating component 148 is configured to generate SNPL report 162 associated with SNPL value 143 after the SNPL value 143 has been adjusted and optimized by adjustment amount 145 calculated by optimization algorithm 147.
  • Call processing component 140 may be configured to include a SNPL transmitting component 149 capable of transmitting the SNPL report to a network after the SNPL report has been generated.
  • SNPL transmitting component 149 is configured to transmit SNPL report 162 to network 1 12 over wireless link 125.
  • ASNPL of equation 2 is reset to zero.
  • Fig. 3 is a flow diagram illustrating an exemplary method 300 described the process of call processing from the UE perspective.
  • method 300 includes a call processing component 140 for calculating a SNPL value.
  • SNPL calculating component 142 is configured to calculate SNPL value 143 at UE 1 14.
  • call processing component 140 includes calculating an adjustment amount for the SNPL value via a SNPL optimization algorithm. For example, after SNPL calculating component 142 calculates SNPL value 143, adjustment amount calculating component 144 is configured to calculate adjustment amount 145 for SNPL value 143 via optimization algorithm 147.
  • call processing component 140 includes optimizing the SNPL value based on the adjustment amount calculated by the SNPL optimization algorithm. For example, after adjustment amount calculating component 144 calculates adjustment amount 145 for SNPL value 143, SNPL optimizing component 146 is configured to optimize SNPL value 143 based on adjustment amount 145 calculated by optimization algorithm 147.
  • call processing component 140 includes generating the SNPL report based on the optimized SNPL value. For example, after SNPL optimizing component 146 optimizes SNPL value 143 based on adjustment amount 145 calculated by optimization algorithm 147, SNPL report generating component 148 is configured to generate SNPL report 162 associated with SNPL value 143 after the SNPL value 143 has been adjusted and optimized by adjustment amount 145 calculated by SNPL optimization algorithm 147.
  • call processing component 140 includes transmitting the SNPL report to a network after the SNPL report has been generated.
  • SNPL report generating component 148 generates SNPL report 162
  • SNPL transmitting component 149 is configured to transmit SNPL report 162 to network 112 over wireless link 125.
  • Fig. 4 is a flow diagram illustrating an exemplary method 400 described the process of call processing from the network perspective.
  • method 400 includes a call processing component 150 for receiving a SNPL report from a UE.
  • SNPL receiving component 152 of network 112 is configured to receive SNPL report 162 from UE 114 over wireless link 125.
  • call processing component 150 includes calculating a resource grant for the UE based on the SNPL report. For example, after receiving a SNPL report from a UE, resource grant calculating component 154 is configured to calculate resource grant 155 for UE 114 based on the SNPL report 162.
  • call processing component 150 includes transmitting the resource grant to the UE.
  • resource grant transmitting component 156 is configured to transmit resource grant 155 to UE 114 over wireless link 125.
  • the executing method 300 and 400 may be UE 114 or network 112 (Fig. 1) executing the call processing component 140/150 (Figs. 1 and 2), or respective components thereof.
  • UE 114 and/or wireless serving node 116 of Figs. 1 and 2 may be represented by a specially programmed or configured computer device 580, wherein the special programming or configuration includes call processing component 140/150, as described herein.
  • computer device 580 may include one or more components for computing and transmitting a data from a UE 114 to network 112 via wireless serving node 116, such as in specially programmed computer readable instructions or code, firmware, hardware, or some combination thereof.
  • Computer device 580 includes a processor 582 for carrying out processing functions associated with one or more of components and functions described herein.
  • Processor 582 can include a single or multiple set of processors or multi-core processors.
  • processor 582 can be implemented as an integrated processing system and/or a distributed processing system.
  • Computer device 580 further includes a memory 584, such as for storing data used herein and/or local versions of applications being executed by processor 582.
  • Memory 584 can include any type of memory usable by a computer, such as random access memory (RAM), read only memory (ROM), tapes, magnetic discs, optical discs, volatile memory, non- volatile memory, and any combination thereof.
  • computer device 580 includes a communications component 586 that provides for establishing and maintaining communications with one or more parties utilizing hardware, software, and services as described herein.
  • Communications component 586 may carry communications between components on computer device 580, as well as between computer device 580 and external devices, such as devices located across a communications network and/or devices serially or locally connected to computer device 580.
  • communications component 586 may include one or more buses, and may further include transmit chain components and receive chain components associated with a transmitter and receiver, respectively, or a transceiver, operable for interfacing with external devices.
  • a receiver of communications component 586 operates to receive one or more data via a wireless serving node 116, which may be a part of memory 584.
  • computer device 580 may further include a data store 588, which can be any suitable combination of hardware and/or software, that provides for mass storage of information, databases, and programs employed in connection with aspects described herein.
  • data store 588 may be a data repository for applications not currently being executed by processor 582.
  • Computer device 580 may additionally include a user interface component 589 operable to receive inputs from a user of computer device 580, and further operable to generate outputs for presentation to the user.
  • User interface component 589 may include one or more input devices, including but not limited to a keyboard, a number pad, a mouse, a touch-sensitive display, a navigation key, a function key, a microphone, a voice recognition component, any other mechanism capable of receiving an input from a user, or any combination thereof.
  • user interface component 589 may include one or more output devices, including but not limited to a display, a speaker, a haptic feedback mechanism, a printer, any other mechanism capable of presenting an output to a user, or any combination thereof.
  • computer device 580 may include, or may be in communication with, call processing component 140, which may be configured to perform the functions described herein.
  • Fig. 6 is a block diagram illustrating an example of a hardware implementation for an apparatus 600 employing a processing system 614.
  • Apparatus 600 may be configured to include, for example, wireless communication system 100 (Figs. 1 and 2) and/or call processing component 140/150 (Figs. 1 and 2) implementing the components described above, such as SNPL receiving component 152, resource grant calculating component 154, resource grant transmitting component 156, SNPL report generating component 148, adjustment amount calculating component 144, SNPL optimizing component 146, and SNPL transmitting component 149.
  • the processing system 614 may be implemented with a bus architecture, represented generally by the bus 602.
  • the bus 602 may include any number of interconnecting buses and bridges depending on the specific application of the processing system 614 and the overall design constraints.
  • the bus 602 links together various circuits including one or more processors, represented generally by the processor 604, and computer-readable media, represented generally by the computer-readable medium 606.
  • the bus 602 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 608 provides an interface between the bus 602 and a transceiver 610.
  • the transceiver 610 provides a means for communicating with various other apparatus over a transmission medium.
  • a user interface 66 e.g., keypad, display, speaker, microphone, joystick
  • the processor 604 is responsible for managing the bus 602 and general processing, including the execution of software stored on the computer-readable medium 606.
  • the software when executed by the processor 604, causes the processing system 614 to perform the various functions described infra for any particular apparatus.
  • the computer-readable medium 606 may also be used for storing data that is manipulated by the processor 604 when executing software.
  • processor 604, computer-readable medium 606, or a combination of both may be configured or otherwise specially programmed to perform the functionality of the call processing component 140 (Figs. 1 and 2) as described herein.
  • a UMTS network includes three interacting domains: a Core Network (CN) 704, a UMTS Terrestrial Radio Access Network (UTRAN) 702, and User Equipment (UE) 710.
  • UE 710 may be configured to include, for example, the call processing component 140/150 (Figs. 1 and 2) implementing the components described above, such as SNPL receiving component 152, resource grant calculating component 154, resource grant transmitting component 156, SNPL report generating component 148, adjustment amount calculating component 144, SNPL optimizing component 146, and SNPL transmitting component 149.
  • the UTRAN 702 provides various wireless services including telephony, video, data, messaging, broadcasts, and/or other services.
  • the UTRAN 702 may include a plurality of Radio Network Subsystems (RNSs) such as an RNS 707, each controlled by a respective Radio Network Controller (RNC) such as an RNC 706.
  • RNC Radio Network Controller
  • the UTRAN 702 may include any number of R Cs 706 and R Ss 707 in addition to the R Cs 706 and RNSs 707 illustrated herein.
  • the RNC 706 is an apparatus responsible for, among other things, assigning, reconfiguring and releasing radio resources within the RNS 707.
  • the RNC 706 may be interconnected to other RNCs (not shown) in the UTRAN 702 through various types of interfaces such as a direct physical connection, a virtual network, or the like, using any suitable transport network.
  • Communication between a UE 710 and a Node B 708 may be considered as including a physical (PHY) layer and a medium access control (MAC) layer. Further, communication between a UE 710 and an RNC 706 by way of a respective Node B 708 may be considered as including a radio resource control (RRC) layer.
  • RRC radio resource control
  • the PHY layer may be considered layer 1 ; the MAC layer may be considered layer 2; and the RRC layer may be considered layer 3.
  • Information hereinbelow utilizes terminology introduced in the RRC Protocol Specification, 3 GPP TS 25.331, incorporated herein by reference.
  • the geographic region covered by the RNS 707 may be divided into a number of cells, with a radio transceiver apparatus serving each cell.
  • a radio transceiver apparatus is commonly referred to as a Node B in UMTS applications, but may also be referred to by those skilled in the art as a base station (BS), a base transceiver station (BTS), a radio base station, a radio transceiver, a transceiver function, a basic service set (BSS), an extended service set (ESS), an access point (AP), or some other suitable terminology.
  • BS basic service set
  • ESS extended service set
  • AP access point
  • three Node Bs 708 are shown in each RNS 707; however, the RNSs 707 may include any number of wireless Node Bs.
  • the Node Bs 708 provide wireless access points to a CN 704 for any number of mobile apparatuses.
  • a mobile apparatus include a cellular phone, a smart phone, a session initiation protocol (SIP) phone, a laptop, a notebook, a netbook, a smartbook, a personal digital assistant (PDA), a satellite radio, a global positioning system (GPS) device, 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
  • GPS global positioning system
  • multimedia device e.g., a digital audio player (e.g., MP3 player), a camera, a game console, or any other similar functioning device.
  • MP3 player digital audio player
  • the UE 710 is commonly referred to as a UE in UMTS applications, but 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 terminal, a user agent, a mobile client, a client, or some other suitable terminology.
  • the UE 710 may further include a universal subscriber identity module (USIM) 711, which contains a user's subscription information to a network.
  • USIM universal subscriber identity module
  • one UE 710 is shown in communication with a number of the Node Bs 708.
  • the DL also called the forward link, refers to the communication link from a Node B 708 to a UE 710
  • the UL also called the reverse link, refers to the communication link from a UE 710 to a Node B 708.
  • the CN 704 interfaces with one or more access networks, such as the UTRAN
  • the CN 704 is a GSM core network.
  • the various concepts presented throughout this disclosure may be implemented in a RAN, or other suitable access network, to provide UEs with access to types of CNs other than GSM networks.
  • the CN 704 includes a circuit-switched (CS) domain and a packet-switched
  • PS Packet- switched elements
  • MSC Mobile services Switching Centre
  • VLR Visitor location register
  • GGSN Gateway GPRS Support Node
  • EIR, HLR, VLR and AuC may be shared by both of the circuit- switched and packet-switched domains.
  • the CN 704 supports circuit-switched services with a MSC 712 and a GMSC 714.
  • the GMSC 714 may be referred to as a media gateway (MGW).
  • MGW media gateway
  • One or more RNCs, such as the RNC 706, may be connected to the MSC 712.
  • the MSC 712 is an apparatus that controls call setup, call routing, and UE mobility functions.
  • the MSC 712 also includes a VLR that contains subscriber-related information for the duration that a UE is in the coverage area of the MSC 712.
  • the GMSC 714 provides a gateway through the MSC 712 for the UE to access a circuit-switched network 716.
  • the GMSC 714 includes a home location register (HLR) 715 containing subscriber data, such as the data reflecting the details of the services to which a particular user has subscribed.
  • the HLR is also associated with an authentication center (AuC) that contains subscriber-specific authentication data.
  • AuC authentication center
  • the GMSC 714 queries the HLR 715 to determine the UE's location and forwards the call to the particular MSC serving that location.
  • the CN 704 also supports packet-data services with a serving GPRS support node (SGSN) 718 and a gateway GPRS support node (GGSN) 720.
  • GPRS which stands for General Packet Radio Service, is designed to provide packet-data services at speeds higher than those available with standard circuit- switched data services.
  • the GGSN 720 provides a connection for the UTRAN 702 to a packet-based network 722.
  • the packet-based network 722 may be the Internet, a private data network, or some other suitable packet-based network.
  • the primary function of the GGSN 720 is to provide the UEs 710 with packet-based network connectivity. Data packets may be transferred between the GGSN 720 and the UEs 710 through the SGSN 718, which performs primarily the same functions in the packet-based domain as the MSC 712 performs in the circuit-switched domain.
  • An air interface for UMTS may utilize a spread spectrum Direct-Sequence
  • DS-CDMA Code Division Multiple Access
  • the spread spectrum DS- CDMA spreads user data through multiplication by a sequence of pseudorandom bits called chips.
  • the "wideband" W-CDMA air interface for UMTS is based on such direct sequence spread spectrum technology and additionally calls for a frequency division duplexing (FDD).
  • FDD uses a different carrier frequency for the UL and DL between a Node B 708 and a UE 710.
  • TDD time division duplexing
  • An HSPA air interface includes a series of enhancements to the 3G/W-CDMA air interface, facilitating greater throughput and reduced latency.
  • HSPA utilizes hybrid automatic repeat request (HARQ), shared channel transmission, and adaptive modulation and coding.
  • HARQ hybrid automatic repeat request
  • the standards that define HSPA include HSDPA (high speed downlink packet access) and HSUPA (high speed uplink packet access, also referred to as enhanced uplink, or EUL).
  • HSDPA utilizes as its transport channel the high-speed downlink shared channel (HS-DSCH).
  • the HS-DSCH is implemented by three physical channels: the high-speed physical downlink shared channel (HS-PDSCH), the high-speed shared control channel (HS-SCCH), and the high-speed dedicated physical control channel (HS-DPCCH).
  • HS-PDSCH high-speed physical downlink shared channel
  • HS-SCCH high-speed shared control channel
  • HS-DPCCH high-speed dedicated physical control channel
  • the HS-DPCCH carries the HARQ
  • the UE 710 provides feedback to the node B 708 over the HS-DPCCH to indicate whether it correctly decoded a packet on the downlink.
  • HS-DPCCH further includes feedback signaling from the UE 710 to assist the node B 708 in taking the right decision in terms of modulation and coding scheme and precoding weight selection, this feedback signaling including the CQI and PCI.
  • HSPA Evolved or HSPA+ is an evolution of the HSPA standard that includes MIMO and 64-QAM, enabling increased throughput and higher performance. That is, in an aspect of the disclosure, the node B 708 and/or the UE 710 may have multiple antennas supporting MIMO technology. The use of MIMO technology enables the node B 708 to exploit the spatial domain to support spatial multiplexing, beamforming, and transmit diversity.
  • MIMO Multiple Input Multiple Output
  • MIMO systems generally enhance data transmission performance, enabling diversity gains to reduce multipath fading and increase transmission quality, and spatial multiplexing gains to increase data throughput.
  • 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 710 to increase the data rate, or to multiple UEs 710 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) 710 with different spatial signatures, which enables each of the UE(s) 710 to recover the one or more the data streams destined for that UE 710.
  • each UE 710 may transmit one or more spatially precoded data streams, which enables the node B 708 to identify the source of each spatially precoded data stream.
  • Spatial multiplexing may be used when channel conditions are good. When channel conditions are less favorable, beamforming may be used to focus the transmission energy in one or more directions, or to improve transmission based on characteristics of the channel. This may be achieved by spatially precoding a data stream 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.
  • n transport blocks may be transmitted simultaneously over the same carrier utilizing the same channelization code. Note that the different transport blocks sent over the n transmit antennas may have the same or different modulation and coding schemes from one another.
  • Single Input Multiple Output generally refers to a system utilizing a single transmit antenna (a single input to the channel) and multiple receive antennas (multiple outputs from the channel).
  • a single transport block is sent over the respective carrier.
  • the multiple access wireless communication system includes multiple cellular regions (cells), including cells 802, 804, and 806, each of which may include one or more sectors.
  • the multiple sectors can be formed by groups of antennas with each antenna responsible for communication with UEs in a portion of the cell. For example, in cell 802, antenna groups 812, 88, and 816 may each correspond to a different sector. In cell 804, antenna groups 818, 820, and 822 each correspond to a different sector. In cell 806, antenna groups 824, 826, and 828 each correspond to a different sector.
  • the cells 802, 804 and 806 may include several wireless communication devices, e.g., User Equipment or UEs, which may be in communication with one or more sectors of each cell 802, 804 or 806.
  • UEs 830 and 832 may be in communication with Node B 842
  • UEs 834 and 836 may be in communication with Node B 844
  • UEs 838 and 840 can be in communication with Node B 846.
  • each Node B 842, 844, 846 is configured to provide an access point to a CN 704 (see Fig. 7) for all the UEs 830, 832, 834, 836, 838, 840 in the respective cells 802, 804, and 806.
  • Node Bs 842, 844, 846 and UEs 830, 832, 834, 836, 838, 840 respectively may be configured to include, for example, the call processing component 140/150 (Figs. 1 and 2) implementing the components described above, such as SNPL receiving component 152, resource grant calculating component 154, resource grant transmitting component 156, SNPL report generating component 148, adjustment amount calculating component 144, SNPL optimizing component 146, and SNPL transmitting component 149.
  • the call processing component 140/150 implementing the components described above, such as SNPL receiving component 152, resource grant calculating component 154, resource grant transmitting component 156, SNPL report generating component 148, adjustment amount calculating component 144, SNPL optimizing component 146, and SNPL transmitting component 149.
  • a serving cell change (SCC) or handover may occur in which communication with the UE 834 transitions from the cell 804, which may be referred to as the source cell, to cell 806, which may be referred to as the target cell.
  • Management of the handover procedure may take place at the UE 834, at the Node Bs corresponding to the respective cells, at a radio network controller 706 (see Fig. 7), or at another suitable node in the wireless network.
  • the UE 834 may monitor various parameters of the source cell 804 as well as various parameters of neighboring cells such as cells 806 and 802.
  • the UE 834 may maintain communication with one or more of the neighboring cells. During this time, the UE 834 may maintain an Active Set, that is, a list of cells that the UE 834 is simultaneously connected to (i.e., the UTRA cells that are currently assigning a downlink dedicated physical channel DPCH or fractional downlink dedicated physical channel F-DPCH to the UE 834 may constitute the Active Set).
  • an Active Set that is, a list of cells that the UE 834 is simultaneously connected to (i.e., the UTRA cells that are currently assigning a downlink dedicated physical channel DPCH or fractional downlink dedicated physical channel F-DPCH to the UE 834 may constitute the Active Set).
  • the standard may vary depending on the particular telecommunications standard being deployed.
  • the standard may include Evolution-Data Optimized (EV-DO) or Ultra Mobile Broadband (UMB).
  • 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.
  • the standard may alternately be 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), and Flash-OFDM employing OFDMA.
  • 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 radio protocol architecture may take on various forms depending on the particular application.
  • An example for an HSPA system will now be presented with reference to Fig. 9.
  • Fig. 9 is a conceptual diagram illustrating an example of the radio protocol architecture 900 for the user plane and the control plane of a user equipment (UE) or node B/base station.
  • architecture 900 may be included in a network entity and/or UE such as an entity within network 112 and/or UE 114 (Figs. 1 and 2).
  • the radio protocol architecture 900 for the UE and node B is shown with three layers 908: Layer 1, Layer 2, and Layer 3.
  • Layer 1 is the lowest lower and implements various physical layer signal processing functions.
  • Layer 1 includes the physical layer 906.
  • Layer 2 (L2 layer) is above the physical layer 906 and is responsible for the link between the UE and node B over the physical layer 906.
  • Layer 3 (L3 layer) includes a radio resource control (R C) sublayer 916.
  • the RRC sublayer 916 handles the control plane signaling of Layer 3 between the UE and the UTRAN.
  • the L2 layer includes a media access control (MAC) sublayer 910, a radio link control (RLC) sublayer 912, and a packet data convergence protocol (PDCP) 914 sublayer, which are terminated at the node B 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 including a network layer (e.g., IP layer) that is terminated at a PDN gateway 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 914 provides multiplexing between different radio bearers and logical channels.
  • the PDCP sublayer 914 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 node Bs.
  • the RLC sublayer 912 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 910 provides multiplexing between logical and transport channels.
  • the MAC sublayer 910 is also responsible for allocating the various radio resources (e.g., resource blocks) in one cell among the UEs.
  • the MAC sublayer 910 is also responsible for HARQ operations.
  • Fig. 10 is a block diagram of a communication system 1000 including a Node
  • a transmit processor 1020 may receive data from a data source 1016 and control signals from a controller/processor 1040.
  • the transmit processor 1020 provides various signal processing functions for the data and control signals, as well as reference signals (e.g., pilot signals).
  • the transmit processor 1020 may provide cyclic redundancy check (CRC) codes for error detection, coding and interleaving to facilitate forward error correction (FEC), 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), and the like), spreading with orthogonal variable spreading factors (OVSF), and multiplying with scrambling codes to produce a series of symbols.
  • BPSK binary phase-shift keying
  • QPSK quadrature phase-shift keying
  • M-PSK M-phase-shift keying
  • M-QAM M-quadrature amplitude modulation
  • OVSF orthogonal variable spreading factors
  • channel estimates may be derived from a reference signal transmitted by the UE 1050 or from feedback from the UE 1050.
  • the symbols generated by the transmit processor 1020 are provided to a transmit frame processor 1030 to create a frame structure.
  • the transmit frame processor 1030 creates this frame structure by multiplexing the symbols with information from the controller/processor 1040, resulting in a series of frames.
  • the frames are then provided to a transmitter 1032, which provides various signal conditioning functions including amplifying, filtering, and modulating the frames onto a carrier for downlink transmission over the wireless medium through antenna 1034.
  • the antenna 1034 may include one or more antennas, for example, including beam steering bidirectional adaptive antenna arrays or other similar beam technologies.
  • a receiver 1054 receives the downlink transmission through an antenna 1052 and processes the transmission to recover the information modulated onto the carrier.
  • the information recovered by the receiver 1054 is provided to a receive frame processor 1060, which parses each frame, and provides information from the frames to a channel processor 1094 and the data, control, and reference signals to a receive processor 1070.
  • the receive processor 1070 then performs the inverse of the processing performed by the transmit processor 1020 in the Node B 1010. More specifically, the receive processor 1070 descrambles and despreads the symbols, and then determines the most likely signal constellation points transmitted by the Node B 1010 based on the modulation scheme. These soft decisions may be based on channel estimates computed by the channel processor 1094.
  • the soft decisions are then decoded and deinterleaved to recover the data, control, and reference signals.
  • the CRC codes are then checked to determine whether the frames were successfully decoded.
  • the data carried by the successfully decoded frames will then be provided to a data sink 1072, which represents applications running in the UE 1050 and/or various user interfaces (e.g., display).
  • Control signals carried by successfully decoded frames will be provided to a controller/processor 1090.
  • the controller/processor 1090 may also use an acknowledgement (ACK) and/or negative acknowledgement (NACK) protocol to support retransmission requests for those frames.
  • ACK acknowledgement
  • NACK negative acknowledgement
  • a transmit processor 1080 receives data from a data source 1078 and control signals from the controller/processor 1090 and provides various signal processing functions including CRC codes, coding and interleaving to facilitate FEC, mapping to signal constellations, spreading with OVSFs, and scrambling to produce a series of symbols.
  • Channel estimates may be used to select the appropriate coding, modulation, spreading, and/or scrambling schemes.
  • the symbols produced by the transmit processor 1080 will be provided to a transmit frame processor 1082 to create a frame structure.
  • the transmit frame processor 1082 creates this frame structure by multiplexing the symbols with information from the controller/processor 1090, resulting in a series of frames.
  • the frames are then provided to a transmitter 1056, which provides various signal conditioning functions including amplification, filtering, and modulating the frames onto a carrier for uplink transmission over the wireless medium through the antenna 1052.
  • the uplink transmission is processed at the Node B 1010 in a manner similar to that described in connection with the receiver function at the UE 1050.
  • a receiver 1035 receives the uplink transmission through the antenna 1034 and processes the transmission to recover the information modulated onto the carrier.
  • the information recovered by the receiver 1035 is provided to a receive frame processor 1036, which parses each frame, and provides information from the frames to the channel processor 1044 and the data, control, and reference signals to a receive processor 1038.
  • the receive processor 1038 performs the inverse of the processing performed by the transmit processor 1080 in the UE 1050.
  • the data and control signals carried by the successfully decoded frames may then be provided to a data sink 1039 and the controller/processor, respectively. If some of the frames were unsuccessfully decoded by the receive processor, the controller/processor 1040 may also use an acknowledgement (ACK) and/or negative acknowledgement (NACK) protocol to support retransmission requests for those frames.
  • ACK acknowledgement
  • NACK negative acknowledgement
  • the controller/processors 1040 and 1090 may be used to direct the operation at the Node B 1010 and the UE 1050, respectively.
  • the controller/processors 1040 and 1090 may provide various functions including timing, peripheral interfaces, voltage regulation, power management, and other control functions.
  • the computer readable media of memories 1042 and 1092 may store data and software for the Node B 1010 and the UE 1050, respectively.
  • a scheduler/processor 1046 at the Node B 1010 may be used to allocate resources to the UEs and schedule downlink and/or uplink transmissions for the UEs.
  • TD-SCDMA High Speed Downlink Packet Access
  • HSDPA High Speed Downlink Packet Access
  • HSUPA High Speed Uplink Packet Access
  • HSPA+ High Speed Packet Access Plus
  • LTE Long Term Evolution
  • LTE-A LTE-Advanced
  • CDMA2000 Evolution-Data Optimized
  • UMB Ultra Mobile Broadband
  • IEEE 802.11 Wi-Fi
  • IEEE 802.10 WiMAX
  • IEEE 802.20 Ultra- Wideband
  • Bluetooth Bluetooth
  • the actual telecommunication standard, network architecture, and/or communication standard employed will depend on the specific application and the overall design constraints imposed on the system.
  • 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 606 (Fig. 6).
  • the computer-readable medium 606 (Fig. 6) may be a non- transitory computer-readable medium.
  • a non-transitory computer-readable medium includes, 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 carrier wave, a transmission line, and 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.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
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Abstract

L'invention porte sur des procédés et un appareil de communication sans fil pour optimiser un rapport SNPL afin de maximiser le débit HSUPA. Des aspects des procédés et de l'appareil concernent le calcul d'une valeur SNPL au niveau d'un UE et l'optimisation de la valeur SNPL en fonction d'une quantité d'ajustement optimisée. L'UE génère alors un rapport SNPL sur la base de la valeur SNPL optimisée et transmet le rapport SNPL à un réseau.
PCT/CN2013/085168 2013-03-19 2013-10-14 Procédé et appareil d'optimisation de rapport snpl WO2014146427A1 (fr)

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CN101635933A (zh) * 2008-07-22 2010-01-27 大唐移动通信设备有限公司 一种测量路径损耗的方法、***及设备
CN102960034A (zh) * 2010-06-29 2013-03-06 高通股份有限公司 用于在无线通信中为设备发射功率设置上限的方法和装置

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US20090005075A1 (en) * 2007-06-29 2009-01-01 Margrave Geoffrey E Determining the location of a wireless mobile communications device
CN101527963A (zh) * 2008-03-05 2009-09-09 大唐移动通信设备有限公司 一种实现小区间干扰控制的资源分配方法及***
CN101635933A (zh) * 2008-07-22 2010-01-27 大唐移动通信设备有限公司 一种测量路径损耗的方法、***及设备
CN102960034A (zh) * 2010-06-29 2013-03-06 高通股份有限公司 用于在无线通信中为设备发射功率设置上限的方法和装置

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