111111111111111111111111111111111111111111111111111111111111111111111111111
`
`(12) United States Patent
`Maheshwari et al.
`
`(10) Patent No.:
`(45) Date of Patent:
`
`US 9,094,202 B2
`Jul. 28, 2015
`
`(56)
`
`References Cited
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`U.S. PATENT DOCU肌1ENTS
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`paragraph 5.3 .2.2
`
`(Continued)
`
`(54) UTILIZING HARQ FOR UPLINK GRANTS
`RECEIVED IN WIRELESS
`COMMUNICATIONS
`
`(75)
`
`Inventors: Shai1esh Maheshwari, San Diego, CA
`(US); Srividhya Krishnamoorthy, San
`Diego, CA (US); Vanitha A. Kumar,
`San Diego, CA (US); Arnaud Meylan,
`Bois-Colombes (FR)
`
`(73) Assignee: QUALCOMM Incorporated, San
`Diego, CA (US)
`
`( *) Notice:
`
`Subject to any disclaimer, the term ofthis
`patent is extended or a司justed under 35
`U.S.C. 154(b) by 1100 days.
`
`(21) Appl. No.: 12/501,219
`
`(22) Filed:
`
`Jul. 10, 2009
`
`(65)
`
`US2010/0037113Al
`
`Prior Publication Data
`Feb.ll , 2010
`
`Related U.S. Application Data
`
`(60) Provisional application No. 61/087， 307 ，自ledonAug
`8, 2008, provisional application No. 61/088,257, filed
`onAug. 12, 2008.
`
`(51)
`
`Int. CI.
`H04L 12/40
`H04L 1/16
`
`(2006.01)
`(2006.01)
`(Continued)
`
`(52) U.S. CI.
`CPC ............ H04L 1/1822 (2013.01); H04L 1/1657
`(2013.01); H04L 1/1812 (2013.01); H04L
`1/1829 (2013.01); H04L 1/1896 (2013.01)
`(58) Field of Classification Search
`None
`See application file for complete search history.
`
`500-飞
`
`PAFLV
`nudm
`vdnu
`
`mwωA
`m-u 飞J
`rz 叫
`
`ABSTRACT
`(57)
`Systems and methodologies are described that facilitate uti(cid:173)
`lizing hybrid automatic repeat/request (HARQ) in system
`accωcommunications. A HARQ entity is provided that
`manages a plurality ofHARQ processes, which can typically
`use new data indicators (NDI) to determine when received
`data is a new transmission or retransmission. For resource
`grants, the HARQ entity can determine whether the commu(cid:173)
`nication is a new transmission or retransmission based on the
`type of message that contains the grant. In addition, an
`address comprised within the message, a previous use ofthe
`HARQ process, and/or the like can further be utilized to
`determine whether the message is a new transmission or
`retransmission. Once deterr丑ined， the HARQ entity can pro(cid:173)
`vide the message to the appropriate HARQ process along
`with the indication of new transmission or retransmission.
`
`23 Claims, 11 Drawing Sheets
`
`mdMd
`ea
`A4410
`n
`lr?
`
` T m e --
`
`。D
`
`-yb
`
`恤 L
`
`mmh‘咽
`
`-fh-
`
`一
`
`阳whT
`mmu川
`UUV
`
`如i
`
`RECEIVE A COMMVNICATION COMPRISING A
`RESOVRCE GRANT FROM AN ACCESS POINT
`
`502
`
`DETERMINE WHETHERτ咀 ECOMMVNICATIONISA I _504
`NEW TRANSMISSION OR RETRANSMISSION BASED
`AT LEAST IN PART ON A TYPE OF THE
`COMMVNICATION
`
`PROVIDE THE COMMVNICATION TO A HARQ
`PROCESS ALONG WITH AN INDICATION OF NEW
`TRANSMISSION OR RETRANSMISSION BASED ON THE
`DETERMINATION
`
`I ....- 506
`
`SAMSUNG 1013-0001
`
`

`

`US 9,094,202 B2
`Page 2
`
`UUW0000000000000
`////////////////
`AUAU'IAUAUAUAUAUAUAUAUAUAUAUAUAU AUAUAUAUAUAUAUAUAUAUAUAUAUAUAUAU
`
`2304348 C2
`RTWWWWWWWWWWWWW
`1111
`2313197 C2
`1362850 B
`2004064272 Al
`2006099225 Al
`2007011180 Al
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`W02007091831
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`2007119542 Al
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`7 年 7 年 7 年 7 年 7 年 7 年 7 年 7 年 7 年 7 年 7 年 7 年 7 年 7 年 7 年 7 年
`007 年 A斗呵/QJ11 ，3000unu--A 斗 A斗气 U 气 U 呵/
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`#59bis, R2-074477, Shanghai, China, Oct. 8-12, 2007.
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`XP007905045 Shanghai, China URL:h仕p://www.3gpp.org/ftp/tsg_
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`Park, et al., Provisional U.S. Appl. No. 60/945 ，090 ，直led Jun. 19,
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`and Transmitting Data in a Wireless Communication System"
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`2007, pp. 1-13, "Handling ofHFN Desynchronization".
`QUALCOMM EUlope et al: "Handling ofUplink Grant in Random
`Access Response" 3GPP Draft; RI-083439, 3rd Generation Partner(cid:173)
`ship Pr叮 ect (3GPP), Mobile Competence Centre ; 650, Route Des
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`3GPP TSG-RAN 孔TGl #53bis, RI-082551 , Jun. 30-Jul. 4, 2008,
`Warsaw, Poland.
`QUALCOMM EUlope: "Handling of Uplink Grant in Random
`Access Response" 3GPP Dra丘; RI-083186, 3rd Generation Partner(cid:173)
`ship Project (3GP酌， Mobile Competence Centre ; 650, Route Des
`Lucioles; F-06921 Sophia-Antipolis Cedex; France, no. Jeju; Aug
`13, 2008, XP050316617
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`(51)
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`
`SAMSUNG 1013-0002
`
`

`

`US 9,094,202 B2
`Page 3
`
`(56)
`
`References Cited
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`OTHER PUBLICATIONS
`
`QUALCOMM Europe: "NDI and Message 3" 3GPP Draft;
`R2-084156 NDI and MSG3 , 3RD Generation Partnership Project
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`XP050319292.
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`random access response 岛rmat" ， 3GPP TSG RAN WG2 Meeting
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`Access Control (MAC) protocol specificatio叫 3GPPTS25 .3 21 ver(cid:173)
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`Project; Technical Specification Group Radio Access Network;
`Evolved Universal Terrestrial Radio Access (E-UTRA) Medium
`
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`* cited by exarniner
`
`SAMSUNG 1013-0003
`
`

`

`u.s. Patent
`
`Jul. 28, 2015
`
`Sheet 1 of 11
`
`US 9,094,202 B2
`
`r 100
`
`HARQENTITY
`COMPONENT
`
`106
`
`WIRELESS NODE
`
`FIG.l
`
`SAMSUNG 1013-0004
`
`

`

`u.s. Patent
`
`Jul. 28, 2015
`
`Sheet 2 of 11
`
`US 9,094,202 B2
`
`200
`
`CO岛f岛1UNICATIONS APPARATUS
`
`ACCESS RESPONSE RECEIVING
`CO岛1PONENT
`
`CONTROL AND DATA
`RECEIVING CO岛1PONENT
`
`HARQ ENTITY CO岛1PONENT
`
`202
`
`204
`
`102
`
`FIG.2
`
`SAMSUNG 1013-0005
`
`

`

`可·∞-M》巳伟国畔
`
`』ZFN∞ψN。同情叩
`
`∞田园。。畔凶。同]=-
`
`国N
`可∞户。由hpeNAVN
`
`FIG.3
`
`102
`
`314
`
`312
`
`HARQ ENTITY COMPONENT
`
`RECEIVING CO岛1PONENT
`
`CONTROL CHANNEL
`
`SYSTEM ACCESS COMPONENT
`
`呐TIRELESSDEVICE
`
`304
`
`310
`
`308
`
`306
`
`CO岛亚PONENT
`
`HARQ CONTROL DATA
`
`CO岛1PONENT
`
`HARQ TRANSMISSION
`
`RACH COMPONENT
`
`引TIRELESSDEVICE
`
`302
`
`~300
`
`SAMSUNG 1013-0006
`
`

`

`u.s. Patent
`
`Jul. 28, 2015
`
`Sheet 4 of 11
`
`US 9,094,202 B2
`
`~400
`
`404
`
`RANDO岛1: ACCESS PREA岛1:BLE
`
`RANDO岛1: ACCESS RESPONSE
`
`SCHEDULED TRANS岛nSSION
`
`CONTENTION RESOLUTION
`
`FIG.4
`
`SAMSUNG 1013-0007
`
`

`

`u.s. Patent
`
`Jul. 28, 2015
`
`Sheet 5 of 11
`
`US 9,094,202 B2
`
`500-飞、
`
`RECEIVEACO岛f岛'IUNICATION CO岛'IPRISING A
`RESOURCEGRANTFRO岛亚 AN ACCESS POINT
`
`DETERMINE WHETHER THE COMMUNICATION IS A
`NEWTRANS即nSSTON OR RETRANS附nSSTON BASED
`AT LEAST IN PART ON A TYPE OF THE
`COM岛1UNICATION
`
`502
`
`504
`
`PROVIDE THE COMMUNICATION TO A HARQ
`PROCESS ALONG WITH AN INDICATION OF NEW
`TRANSMISSION OR RETRANSMISSION BASED ON THE
`DETERMINATION
`
`I _，.-雪06
`
`FIG.5
`
`SAMSUNG 1013-0008
`
`

`

`u.s. Patent
`
`600-、
`
`Jul. 28, 2015
`
`Sheet 6 of 11
`
`US 9,094,202 B2
`
`TRANS岛HTRANDO岛1: ACCESS PREA岛1:BLE
`
`RECEIVE RANDO岛1: ACCESS RESPONSE 呐TITH
`RESOURCE GRANT
`
`PROVIDE RANDO岛1: ACCESS RESPONSE TO HARQ
`PROCESS 呐TITHANE呐TTRANS岛HSSION INDICATION
`
`602
`
`604
`
`606
`
`FIG.6
`
`SAMSUNG 1013-0009
`
`

`

`u.s. Patent
`
`700-、
`
`Jul. 28, 2015
`
`Sheet 7 of 11
`
`US 9,094,202 B2
`
`TRANSMIT RANDOM ACCESS PREAMBLE
`
`RECEIVE CONTROL CHANNEL CO岛1MUNICATION
`呐11TH UPLINK GRANT ADDRESSED TO A TEMPORARY
`ADDRESS
`
`PROVIDE RANDO岛'1 ACCESS RESPONSE TO HARQ
`PROCESS 呐11TH A RETRANS岛'II SSION INDICATION
`
`702
`
`704
`
`706
`
`FIG.7
`
`SAMSUNG 1013-0010
`
`

`

`可·∞-M》巳伟国畔
`
`』ZFN∞ψN。同情叩
`
`∞田园。。畔∞。同]{】
`
`f
`
`国N
`可∞户。由hpeNAVN
`
`FIG.8
`
`810
`
`MEMORY
`
`THECOM岛lUNICATION
`
`APPARATUS SPECIFIED IN
`ADDRESS RELA TED TO THE
`
`FOR DETERMINING AN
`
`ELECTRICAL C。如lPONENT
`
`OF THE COMMUNICATION
`LEAST IN PART ON A TYPE
`
`DETERMINED BASED AT
`
`RETRANS如HSSION
`
`NE明TTRANSMISSION OR
`WITH AN INDICATION OF
`HARQPROCESSALONG
`CO岛lMUNICATIONTO A
`
`FOR PROVIDING THE
`
`ELECTRICAL COMPONENT
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`REQUEST
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`SAMSUNG 1013-0011
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`

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`u.s. Patent
`
`Jul. 28, 2015
`
`Sheet 9 of 11
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`US 9,094,202 B2
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`SAMSUNG 1013-0012
`
`

`

`u.s. Patent
`
`Jul. 28, 2015
`
`Sheet 10 of 11
`
`US 9,094,202 B2
`
`1016
`
`1010
`
`1008
`
`1022
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`1024
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`FIG.I0
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`SAMSUNG 1013-0013
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`

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`SAMSUNG 1013-0014
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`

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`US 9,094,202 B2
`
`1
`UTILIZING HARQ FOR UPLINK GRANTS
`RECEIVED IN WIRELESS
`COMMUNICATIONS
`
`CROSS-REFERENCE
`
`卫lÏs application claims the benefit of U.S. Provisional
`Application Ser. No. 61/087,307, 自led Aug. 8, 2008, and
`讪削 "GR队AN盯TI时NME囚SSAG田E2ηFL口旧~IPS刊ND田D囚囚1."
`7 hl~r1 -~~，~-
`U.S. Provisional Application Ser. No. 61/088 ，257 ，自ledAug
`12, 2008, and entitled "GRANT IN MESSAGE 2 FLIPS
`NDI," the entireties ofwhich are incorporated herein by ref-
`erence.
`
`BACKGROUND
`
`2
`SUMMARY
`
`The following presents a simpli自己d summary of various
`aspωts of the claimed subject ma旧r in order to provide a
`5 basic understanding of such asp巳'cts. This summary is not an
`extensive overview of all contemplated aspects, and is
`inten~ed to neither identifY key or critical elements nor delin-
`H
`巳创at旬巳 th览巳 s比c∞op巳 ofs贝su比lch as叩p巳ωct臼s. It臼s sole pur甲pos臼巳 1βs tωopre巳s臼巳nt
`
`10 a prelude to the more detail巳d description that is presented
`later
`In accordance with one or more embodiments and corre(cid:173)
`ponding disclosure thereof, various aspects are described in
`connection with facilitating hybrid automatic repeat/request
`15 (HARQ) support for system access communications in wire(cid:173)
`less networks. In one ex缸口ple， where a resource grant is
`recelv巳，d in a system access response, a HARQ entity that
`processes HARQ communication can consider the received
`
`1. Field
`The present disclosure 乓叫lat阳巳创s ge阴阴巳臼en阳1
`mum比ca瓜副tions and more巳 s叩p巳ω阳cα1此a址all妙ytop严ro叮…V叽1凶n吨gHARQ 且四- 20 resource grant is received over an establisl时 control channel
`and/or indicates a temporary device address, the HARQ
`tionality for system access communications.
`II. Background
`entity can consider the grant as a retransmission since it can
`be inferred that the previous transmission has not reached its
`Wireless communication systems are widely deployed to
`provide various types of communication content such as, for
`destination. In yet another ex缸口ple， where a new data indi-
`example, voice, data, and so on. Typical wireless communi- 25 cator is present in a resource grant, the HARQ entity can
`ignore resource grants received on the established control
`cation systems may be multiple-access systems capable of
`supporting communication with multiple users by sharing
`channel indicating a temporary address in determining
`available system resources (e.g., bandwidth, transmit power,
`whether the indicator has been increment巳d. It is to be appre-
`..). Ex缸口ples of such multiple-access systems may include
`ciated that where the indicator is determined as incremented
`code division multiple access (CDMA) systems, time divi- 30 by the HARQ entity, this can indicate that the grant is a new
`transmission. In this regard, HARQ functionality can be
`sion multiple access (TDMA) systems, frequency division
`multiple access (FDMA) systems, orthogonal 企'equency divi -
`implemented for system access in wireless networks.
`sion multiple access (OFDMA) systems, and the like. Addi-
`According to relat巳，d aspects, a method for interpreting
`tionally, the systems can conform to specifications such as
`HARQ functionality in system access procedures is provided.
`third generation partnership project (3GPP), 3GPP long term 35 The method includes receiving a communication comprising
`evolution (LT凹， ultra mobile broadband (UM町， and/or
`a resource grant from an access point in a wireless network.
`multi-carrier wireless specifications such as evolution data
`The method also includes determining whether the commu-
`optimized (EV-DO), one or more revisions ther，巳of， etc.
`nication is a new transmission or retransmission based at least
`Generally, wireless multiple-access communication sys-
`in part on a type thereof and providing the communication to
`tems may simultaneously support communication for mul- 40 a HARQ process along with an indication of new transmis-
`sion or retransmission based on the determination
`tiple mobile devices. Each mobile device may communicate
`Another aspect relates to a wireless communications appa-
`with one or more base stations via transmissions on forward
`and reverse links. The forward link (or downlink) refers to the
`ratus. The wireless communications apparatus can include at
`communication link from base stations to mobile devices, and
`least one processor configured to receive a response to a
`the reverse lir业 (or uplink) refers to the communication link 45 system access request comprising a resource grant from one
`from mobile devices to base stations. Further, communica-
`or more access points in a wireless network and determine a
`type of the response. The processor is further configured to
`tions betweenmobile devices and base stations may be estab-
`lished via single-input single-output (SISO) systems, mul-
`provide the response to a HARQ process along with an indi-
`tiple-input single-output (MISO) systems, multiple-input
`cation of new transmission or retransmission based at least in
`multiple-output (MIMO) systems, and so forth. In addition, 50 part on the type of the response. The wireless communica-
`mobile devices can communicate with other mobile devices
`tions apparatus also comprises a memory coupled to the at
`(and/or base stations with other base stations) in peer-to-p臼r
`least one processor.
`wireless network configurations.
`Yet another aspect relates to a wireless communications
`Automatic repeatlrequest (ARQ) technologies, such as
`apparatus that facilitates utilizing HARQ communications in
`hybrid-ARQ (HARQ), can be used between mobile devices 55 system access procedures. The wireless communications
`apparatus can comprise means for receiving a communica-
`and base stations to facilitate successful communications. For
`example, the base station can transmit signals to a mobile
`tion from an access point in response to a system access
`device, and the mobile device can transmit control data back
`request. The wireless communications apparatus can addi-
`to the base station indicating whether or not it successfully
`tionally include means for providing the communication to a
`rωeived data within the signal. If not, the base station can 60 HARQ process along with an indication of new transmission
`retransmit the signal. To this end, devices utilizing HARQ can
`or retransmission determin巳，d based at least in part on a type of
`have a HARQ entity that receives the data and determines
`the communication.
`whether it is a new transmission or retransmission based on a
`Still another aspect relates to a computer progr缸口 product，
`n巳w data indicator (NDI) in the data. NDIs, however, are not
`which can have a computer-readable medium including code
`always present in transmissions between the mobile devices 65 for causing at least one computer to receive a communication
`and base stations, particularly for system access communica-
`comprising a resource grant from an access point in a wireless
`tions.
`network. The computer-readable medium can also comprise
`
`SAMSUNG 1013-0015
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`

`

`US 9,094,202 B2
`
`BRIEF DESCRIPTION OF THE DRAWINGS
`
`4
`3
`ofhardware and software, software, or software in execution.
`code for causing the at least one computer to determine
`For example, a component can be, but is not limited to being,
`whether the communication is a new transmission or retrans-
`a process running on a processor, an integrated circuit, an
`mission based at least in part on a type thereof. Moreover, the
`obj 巳'Ct， an executable, a thread of execution, a program, and/or
`computer-readable mediur丑 can comprise code for causing
`the at least one computer to provide the communication to a 5 a computer. By way of illustration, both an application run-
`ning on a computing device and the computing device can be
`HARQ process along with an indication of new transmission
`a component. One or more components can reside within a
`or retransmission based on the determination.
`To the accomplishment ofthe foregoing and related ends,
`process and/or thread of execution and a component can be
`the one or more embodiments comprise the features herein-
`localized on one computer and/or distributed between two or
`after fully described and particularly pointed out in the 10 more computers. In addition, these components can execute
`claims. The following description and the annexed drawings
`from various computer readable media having various data
`set forth in detail cert~in illustrative aspects of the one or mo~e
`structures stored thereon. The components can communicate
`embodiments. These aspωts are indi~ative， however, ofbut a
`by way of local and/or remote processes such as in accor-
`few ofthe various ways in which the principles ofvarious
`~ancewithasignalhavingoneormoredatapackets(e.g. ， data
`embodiments may be employed and the described embodi- 15 fromonecomponentinteractingwithanothercomponentina
`local system, distributed system, and/or across a network
`ments are intended to i~cl~de all such aspects and their
`such as the Internet with other systems by way ofthe signal).
`equivalents.
`Furthermore, various aspects are described herein in con-
`nection with a wireless terminal and/or a base station. A
`20 wireless terminal can refer to a device providing voice and/or
`data connectivity to a user. A wireless terminal can be con-
`FIG. 1 is a block diagram of a system for communicating
`using hybrid automatic repeat/request (HARQ) in accordance
`nected to a computing device such as a laptop computer or
`desktop computer, or it can be a self contained device such as
`with various aspects.
`a personal digital assistant (PDA). A wireless terminal can
`FIG. 2 is an illustration of an example communications
`apparatus for employment within a wireless commnnications 25 also be called a system, a subscriber unit, a subscriber station,
`mobile station, mobile, remote station, access point, remote
`environment.
`terminal, access terminal, user terminal, user agent, user
`FIG. 3 illustrates an example wireless communication net-
`device, or user 叫uipment (UE). A wireless terminal can be a
`work that effectuates performing system access procedures
`subscriber station, wireless device, cellular telephone, PCS
`using HARQ.
`FIG. 4 illustrates ex缸口ple wireless communication system 30 telephone, cordless telephone, a Session Initiation Protocol
`(SIP) phone, a wireless localloop (WLL) station, a personal
`for commnnicating system access messages using HARQ.
`FIG. 5 is a f10w diagram of an example methodology that
`digital assistant (PDA), a handheld device having wireless
`connection capability, or other processing device connected
`facilitates utilizing HARQ in communicating system access
`to a wireless modem. A base station (e.g., access point or
`messages.
`FIG. 6 is a f10w diagram of an example methodology that 35 Evolved Node B (eNB)) can refer to a device in an access
`network that communicates over the air-interface, through
`implements HARQ for resource grants in random access
`one or more sectors, with wireless terminals. The base station
`responses.
`FIG. 7 is a f10w diagram of an example methodology for
`can act as a router between the wireless terminal and the rest
`ofthe access network, which can include an Internet Protocol
`providing HARQ for resource grants over control channels.
`FIG. 8 is a block diagram of an example apparatus that 40 (IP) network, by converting received air-interface frames to
`facilitates providing HARQ communication in system access
`IP packets. The base station also coordinates management of
`procedures.
`attributes for the air interface.
`Moreover, various functions described herein can be
`FIG. 9 is a block diagram of an example wireless commu-
`implemented in hardware, softwar已， firmware, or any combi-
`nication device that can be utilized to implement various
`45 nation thereof. If implemented in software, the functions can
`aspects of the fnnctionality described herein.
`be stor巳，d on or transmitted over as one or more instructions or
`FIG. 10 illustrates an example wireless multiple-access
`commnnication system in accordance with various aspects
`code on a computer-readable medium. Computer-readable
`set forth herein.
`media includes both computer storage media and communi-
`FIG. 11 is a block diagram illustrating an example wireless
`cationmedia including any medium that facilitates transfer of
`commnnication system in which various aspects described 50 a computer program from one place to another. A storage
`media can be any available media that can be accessed by a
`herein can fnnction.
`computer. By way of example, and not limitation, such com-
`puter-readable media can comprise RAM, ROM, EEPROM,
`CD-ROM or other optical disk storage, magnetic disk storage
`Various aspects of the claimed subject matter are now 55 or other magnetic storage devices, or any other medium that
`described with reference to the drawings, wherein like refer-
`can be used to carry or store desired progr缸口 code in the form
`ence numerals are used to refer to like elements throughout.
`of instructions or data structures and that can be accessed by
`In the following description, for purposes of explanation,
`a computer. Also, any connection is properly termed a com-
`puter-readable medium. For example, ifthe software is trans-
`numerous specific details are set forth in order to provide a
`thorough understanding of one or more asp巳'Cts. It may be 60 mitted from a website, server, or other remote source using a
`coaxial cable, fiberoptic cable, twisted pair, digital subscriber
`evident, however, that such aspect(s) may be practiced with-
`line (DSL), or wireless technologies such as ir证rared， radio,
`out these specific details. In other instanc郎， well-known
`and microwave, then the coaxial cable, fiber optic cable,
`structures and devices are shown in block diagram form in
`twisted pair, DSL, or wireless technologies such as infrared,
`order to facilitate describing one or more aspects.
`As used in this application, the terms "component," "mod- 65 radio, and microwave are included in the definition of
`ule," "system," and the like are intended to refer to a com-
`medium. Disk and disc, as used herein, includes compact disc
`puter-related entit弘巳ither hardware, firmware, a combination
`(CD), laser disc, optical disc, digital versatile disc (DVD) ,
`
`DETAILED DESCRIPTION
`
`SAMSUNG 1013-0016
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`

`

`US 9,094,202 B2
`
`5
`6
`f10ppy disk and blu-ray disc (BD), where disks usually repro-
`applications to consume the 出ta. Where the data is a retrans-
`mission, the HARQ process can combine the data with data
`duce data magnetically and discs reproduce data optically
`previously rωeived. In either case, the HARQ entity compo-
`with lasers. Combinations of the above should also be
`nent 102 can transmit an acknowledgement (ACK) indicating
`included within the scope of computer-readable media.
`飞1arious techniques described herein can be used for vari- 5 the data was r巳，ceived successfully, or a non-acknowledge-
`ment (NAK) indicating data receipt was unsuccessful, back to
`ous wireless communication systems, such as Code Division
`Multiple Access (CDMA) systems, Time Division Multiple
`the wireless node 106. In one ex缸口ple， determining whether
`Access (TDMA) systems, Frequency Division Multiple
`data is successfully or unsuccessfully received can entail
`Access (FDMA) systems, Orthogonal Frequency Di\也lOn
`a忧empting to d巳，code and/or demodulate the data 企om a
`Multiple Access (OFDMA) systems, Single Carrier FDMA 10 received signal. Where a NAK is rωeived， for example, the
`(SC-FDMA) systems, and other such systems. The terms
`wireless node 106 can retransmit data speci市ing the same
`process identifier, and a false NDI, to the HARQ entity com-
`"system" and "network" are often used herein interchange-
`ponent 102. Thus, based at least in part on the NDI (e.g.,
`ably. A CDMA system can implement a radio tech