ZA200908521B - An apparatus comprising a circular buffer and method for assigning redundancy versions to a circular buffer - Google Patents

An apparatus comprising a circular buffer and method for assigning redundancy versions to a circular buffer

Info

Publication number
ZA200908521B
ZA200908521B ZA200908521A ZA200908521A ZA200908521B ZA 200908521 B ZA200908521 B ZA 200908521B ZA 200908521 A ZA200908521 A ZA 200908521A ZA 200908521 A ZA200908521 A ZA 200908521A ZA 200908521 B ZA200908521 B ZA 200908521B
Authority
ZA
South Africa
Prior art keywords
circular buffer
redundancy versions
assigning redundancy
assigning
buffer
Prior art date
Application number
ZA200908521A
Other languages
English (en)
Inventor
Yufei W Blankenship
T Keith Blankenship
Brian K Classon
Ajit Nimbalker
Original Assignee
Motorola Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Motorola Inc filed Critical Motorola Inc
Publication of ZA200908521B publication Critical patent/ZA200908521B/xx

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/12Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1812Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • H04L1/1819Hybrid protocols; Hybrid automatic repeat request [HARQ] with retransmission of additional or different redundancy
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03MCODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M13/00Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
    • H03M13/27Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes using interleaving techniques
    • H03M13/2703Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes using interleaving techniques the interleaver involving at least two directions
    • H03M13/271Row-column interleaver with permutations, e.g. block interleaving with inter-row, inter-column, intra-row or intra-column permutations
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03MCODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M13/00Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
    • H03M13/63Joint error correction and other techniques
    • H03M13/635Error control coding in combination with rate matching
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03MCODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M13/00Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
    • H03M13/63Joint error correction and other techniques
    • H03M13/635Error control coding in combination with rate matching
    • H03M13/6356Error control coding in combination with rate matching by repetition or insertion of dummy data, i.e. rate reduction
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/004Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056Systems characterized by the type of code used
    • H04L1/0067Rate matching
    • H04L1/0068Rate matching by puncturing
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/004Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056Systems characterized by the type of code used
    • H04L1/0071Use of interleaving
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/12Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1867Arrangements specially adapted for the transmitter end
    • H04L1/1874Buffer management

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Probability & Statistics with Applications (AREA)
  • Theoretical Computer Science (AREA)
  • Error Detection And Correction (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Information Transfer Systems (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
  • Information Transfer Between Computers (AREA)
  • Detection And Correction Of Errors (AREA)
ZA200908521A 2007-06-20 2009-12-01 An apparatus comprising a circular buffer and method for assigning redundancy versions to a circular buffer ZA200908521B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11/765,921 US7890834B2 (en) 2007-06-20 2007-06-20 Apparatus comprising a circular buffer and method for assigning redundancy versions to a circular buffer

Publications (1)

Publication Number Publication Date
ZA200908521B true ZA200908521B (en) 2010-08-25

Family

ID=39941691

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA200908521A ZA200908521B (en) 2007-06-20 2009-12-01 An apparatus comprising a circular buffer and method for assigning redundancy versions to a circular buffer

Country Status (12)

Country Link
US (1) US7890834B2 (cg-RX-API-DMAC7.html)
EP (3) EP2485426A1 (cg-RX-API-DMAC7.html)
JP (2) JP5499366B2 (cg-RX-API-DMAC7.html)
KR (2) KR101701083B1 (cg-RX-API-DMAC7.html)
CN (1) CN101682486B (cg-RX-API-DMAC7.html)
BR (1) BRPI0813136A2 (cg-RX-API-DMAC7.html)
CA (1) CA2689587C (cg-RX-API-DMAC7.html)
ES (1) ES2610818T3 (cg-RX-API-DMAC7.html)
MY (1) MY149949A (cg-RX-API-DMAC7.html)
RU (2) RU2467484C2 (cg-RX-API-DMAC7.html)
WO (1) WO2008157523A2 (cg-RX-API-DMAC7.html)
ZA (1) ZA200908521B (cg-RX-API-DMAC7.html)

Families Citing this family (84)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7434138B2 (en) * 2005-06-27 2008-10-07 Agere Systems Inc. Structured interleaving/de-interleaving scheme for product code encoders/decorders
US8069400B2 (en) * 2007-08-13 2011-11-29 Broadcom Corporation Optimal circular buffer rate matching for turbo code
KR20090030378A (ko) * 2007-09-20 2009-03-25 삼성전자주식회사 이동통신 시스템에서 블럭 인터리빙을 위한 장치 및 방법
US7986741B2 (en) * 2007-09-28 2011-07-26 Samsung Electronics Co., Ltd. Method and apparatus of improved circular buffer rate matching for turbo-coded MIMO-OFDM wireless systems
RU2010112600A (ru) * 2007-10-01 2011-10-10 Панасоник Корпорэйшн (Jp) Устройство беспроводной связи и способ управления кольцевым буфером
WO2009048283A2 (en) * 2007-10-09 2009-04-16 Lg Electronics Inc. Method of transmitting data using constellation rearrangement
US8225165B2 (en) * 2007-10-12 2012-07-17 Industrial Technology Research Institute Methods and devices for encoding data in communication systems
WO2009057922A1 (en) * 2007-10-29 2009-05-07 Lg Electronics Inc. Method of data transmission using harq
US8234551B2 (en) * 2007-11-02 2012-07-31 Broadcom Corporation Single CRC polynomial for both turbo code block CRC and transport block CRC
US8532012B2 (en) * 2007-12-07 2013-09-10 Industrial Technology Research Institute Methods and devices for scalable reception in wireless communication systems
KR101476203B1 (ko) * 2008-01-08 2014-12-24 엘지전자 주식회사 성좌 재배열 이득을 보장하기 위한 harq 기반 신호 전송 방법
US8934890B2 (en) * 2008-01-11 2015-01-13 Texas Instruments Incorporated Transmission of data bursts on a constant data rate channel
US8665720B2 (en) * 2008-03-12 2014-03-04 Broadcom Corporation Method and system for determining limited soft buffer size on transport blocks for rate matching
JP5172943B2 (ja) * 2008-03-12 2013-03-27 パナソニック株式会社 無線通信装置、無線通信システム及び無線通信方法
US8514888B2 (en) * 2008-09-12 2013-08-20 Industrial Technology Research Institute Methods and devices for wireless broadcasting service communication environment
US8214696B2 (en) * 2009-02-02 2012-07-03 Lg Electronics Inc. Apparatus and method for transmitting signal using bit grouping in wireless communication system
KR101216102B1 (ko) 2009-02-02 2012-12-26 엘지전자 주식회사 무선 통신 시스템에서 비트 그룹핑을 이용하여 신호를 전송하기 위한 장치 및 그 방법
JPWO2010122699A1 (ja) * 2009-04-24 2012-10-25 パナソニック株式会社 無線通信装置及び無線通信方法
US8516351B2 (en) * 2009-07-21 2013-08-20 Ramot At Tel Aviv University Ltd. Compact decoding of punctured block codes
US8375278B2 (en) * 2009-07-21 2013-02-12 Ramot At Tel Aviv University Ltd. Compact decoding of punctured block codes
US9397699B2 (en) * 2009-07-21 2016-07-19 Ramot At Tel Aviv University Ltd. Compact decoding of punctured codes
US8516352B2 (en) * 2009-07-21 2013-08-20 Ramot At Tel Aviv University Ltd. Compact decoding of punctured block codes
US8290073B2 (en) * 2009-10-08 2012-10-16 Intel Corporation Device, system and method of communicating data over wireless communication symbols with check code
US8677209B2 (en) * 2009-11-19 2014-03-18 Lsi Corporation Subwords coding using different encoding/decoding matrices
US8537755B2 (en) * 2010-05-11 2013-09-17 Qualcomm Incorporated Rate matching device
JP2011249914A (ja) * 2010-05-24 2011-12-08 Panasonic Corp 無線送信装置、無線受信装置、無線送信方法及び無線受信方法
US8621289B2 (en) 2010-07-14 2013-12-31 Lsi Corporation Local and global interleaving/de-interleaving on values in an information word
CN101895374B (zh) * 2010-07-20 2012-09-05 华为技术有限公司 速率匹配方法及装置
US8402324B2 (en) 2010-09-27 2013-03-19 Lsi Corporation Communications system employing local and global interleaving/de-interleaving
US8724742B2 (en) * 2010-10-06 2014-05-13 Motorola Mobility Llc Method and apparatus for soft buffer management for carrier aggregation
US8976876B2 (en) 2010-10-25 2015-03-10 Lsi Corporation Communications system supporting multiple sector sizes
US8782320B2 (en) 2010-11-09 2014-07-15 Lsi Corporation Multi-stage interconnection networks having fixed mappings
US8588223B2 (en) 2010-11-09 2013-11-19 Lsi Corporation Multi-stage interconnection networks having smaller memory requirements
CN102215097B (zh) * 2011-06-01 2017-12-29 深圳市中兴微电子技术有限公司 一种管理混合自动重传请求缓存的方法及装置
CN111181708B (zh) * 2012-04-12 2022-09-02 北京三星通信技术研究有限公司 数据处理的方法及设备
CN103825669B (zh) 2012-11-16 2017-10-24 华为技术有限公司 数据处理的方法和装置
US9143291B2 (en) 2012-12-27 2015-09-22 Google Technology Holdings LLC Method and apparatus for device-to-device communication
US9185697B2 (en) 2012-12-27 2015-11-10 Google Technology Holdings LLC Method and apparatus for device-to-device communication
US9042938B2 (en) 2012-12-27 2015-05-26 Google Technology Holdings LLC Method and apparatus for device-to-device communication
US9370035B2 (en) 2013-08-12 2016-06-14 Google Technology Holdings LLC Methods and devices for mobile station device-to-device beacon window determination
US9392615B2 (en) 2013-08-20 2016-07-12 Google Technology Holdings LLC Methods and devices for allocating resources in device-to-device communication
US9727611B2 (en) * 2013-11-08 2017-08-08 Samsung Electronics Co., Ltd. Hybrid buffer management scheme for immutable pages
CN105637791A (zh) * 2014-05-27 2016-06-01 华为技术有限公司 一种循环映射方法和设备
CN105337684B (zh) * 2014-07-25 2019-09-13 华为技术有限公司 一种传输、存储下行数据的方法、基站及终端
CN106533611A (zh) * 2015-09-14 2017-03-22 中兴通讯股份有限公司 一种卷积码的数据发送方法及装置
CN105187162B (zh) * 2015-09-24 2018-04-27 北京思朗科技有限责任公司 一种多粒度并行解速率匹配方法和装置
US10784901B2 (en) 2015-11-12 2020-09-22 Qualcomm Incorporated Puncturing for structured low density parity check (LDPC) codes
CN108432167B (zh) * 2016-01-14 2021-07-30 苹果公司 对消息进行编码解码的装置、系统和计算机可读介质
US10541781B2 (en) * 2016-01-29 2020-01-21 Intel IP Corporation Rate matching using low-density parity-check codes
US9819445B1 (en) * 2016-05-05 2017-11-14 Mbit Wireless, Inc. Method and apparatus for joint rate matching and deinterleaving
US11043966B2 (en) 2016-05-11 2021-06-22 Qualcomm Incorporated Methods and apparatus for efficiently generating multiple lifted low-density parity-check (LDPC) codes
EP3264611A1 (en) 2016-05-12 2018-01-03 MediaTek Inc. Qc-ldpc coding methods and apparatus
US10454499B2 (en) 2016-05-12 2019-10-22 Qualcomm Incorporated Enhanced puncturing and low-density parity-check (LDPC) code structure
US9917675B2 (en) 2016-06-01 2018-03-13 Qualcomm Incorporated Enhanced polar code constructions by strategic placement of CRC bits
US10291354B2 (en) 2016-06-14 2019-05-14 Qualcomm Incorporated High performance, flexible, and compact low-density parity-check (LDPC) code
JP2019165269A (ja) * 2016-07-28 2019-09-26 シャープ株式会社 基地局装置、端末装置および通信方法
ES2787907T3 (es) * 2016-08-12 2020-10-19 Ericsson Telefon Ab L M Métodos de adaptación de velocidad para códigos LDPC
WO2018068001A1 (en) * 2016-10-06 2018-04-12 Intel Corporation Circular buffer rate matching for polar code
WO2018103638A1 (zh) * 2016-12-07 2018-06-14 华为技术有限公司 数据传输的方法、发送设备、接收设备和通信系统
CN108173621B (zh) * 2016-12-07 2022-06-14 华为技术有限公司 数据传输的方法、发送设备、接收设备和通信系统
US10581457B2 (en) 2017-01-09 2020-03-03 Mediatek Inc. Shift coefficient and lifting factor design for NR LDPC code
US10432227B2 (en) * 2017-01-24 2019-10-01 Mediatek Inc. Location of interleaver with LDPC code
US10630319B2 (en) 2017-01-24 2020-04-21 Mediatek Inc. Structure of interleaver with LDPC code
CN108400844B (zh) * 2017-02-04 2021-07-20 华为技术有限公司 信息处理的方法、装置、通信设备和通信系统
CN108400832B (zh) * 2017-02-06 2022-09-09 华为技术有限公司 数据处理方法和通信设备
WO2018141293A1 (en) * 2017-02-06 2018-08-09 Mediatek Inc. Method and apparatus for communication
US10348329B2 (en) * 2017-02-13 2019-07-09 Qualcomm Incorporated Low density parity check (LDPC) circular buffer rate matching
CN108574491B (zh) 2017-03-09 2020-02-21 华为技术有限公司 数据处理方法、数据处理装置和通信设备
KR20180107692A (ko) * 2017-03-22 2018-10-02 삼성전자주식회사 통신 또는 방송 시스템에서 harq 적용시 전송 방법 및 장치
CN114553368B (zh) 2017-03-22 2024-05-17 三星电子株式会社 在通信或广播系统中使用harq传输的装置和方法
US10567116B2 (en) 2017-05-12 2020-02-18 Mediatek Inc. Wireless communication using codebooks from a QC-LDPC code for shorter processing latency and improved decoder throughput efficiency
US10484011B2 (en) 2017-05-12 2019-11-19 Mediatek Inc. Shift-coefficient table design of QC-LDPC code for larger code block sizes in mobile communications
US10484013B2 (en) 2017-05-12 2019-11-19 Mediatek Inc. Shift-coefficient table design of QC-LDPC code for smaller code block sizes in mobile communications
US10312939B2 (en) 2017-06-10 2019-06-04 Qualcomm Incorporated Communication techniques involving pairwise orthogonality of adjacent rows in LPDC code
CN109150420B (zh) * 2017-06-19 2022-02-25 华为技术有限公司 信息处理的方法、装置、通信设备和通信系统
US12476733B2 (en) * 2017-06-19 2025-11-18 Qualcomm Incorporated Communication techniques with self-decodable redundancy versions (RVs) using systematic codes
CN110832799B (zh) 2017-07-07 2021-04-02 高通股份有限公司 应用低密度奇偶校验码基图选择的通信技术
CA3072373C (en) * 2017-08-10 2023-08-29 Nokia Technologies Oy Transmission of redundancy versions in block coding
WO2019100236A1 (en) * 2017-11-22 2019-05-31 Qualcomm Incorporated Circular buffer based hybrid automatic retransmission request for polar codes
US10680764B2 (en) 2018-02-09 2020-06-09 Qualcomm Incorporated Low-density parity check (LDPC) parity bit storage for redundancy versions
EP3857747A4 (en) * 2018-09-28 2022-01-26 ZTE Corporation BIT SELECTION FOR HYBRID AUTOMATIC REPEAT REQUESTS
WO2020114572A1 (en) * 2018-12-03 2020-06-11 Huawei Technologies Co., Ltd. Devices, methods and computer programs for spatial diversity via enhanced rate matching in wireless communications
CN117318879A (zh) * 2022-06-22 2023-12-29 大唐移动通信设备有限公司 数据传输方法、设备、装置及存储介质
US20250310023A1 (en) * 2024-03-26 2025-10-02 Qualcomm Incorporated Code designs for nonuniform sources

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0940814B1 (en) * 1993-12-18 2003-06-25 Sony Corporation Data reproduction apparatus and data storage medium
GB9814960D0 (en) * 1998-07-10 1998-09-09 Koninkl Philips Electronics Nv Coding device and communication system using the same
US6628723B1 (en) * 1999-10-15 2003-09-30 Cisco Technology Coding rate reduction for turbo codes
ATE365345T1 (de) * 2001-02-06 2007-07-15 Nortel Networks Sa Mehrfachratenringpuffer und entsprechendes betriebsverfahren
WO2002091590A1 (en) * 2001-05-08 2002-11-14 Samsung Electronics Co., Ltd. Apparatus and method for generating codes in a communication system
KR20030004978A (ko) * 2001-07-07 2003-01-15 삼성전자 주식회사 이동 통신시스템에서 초기전송 및 재전송 방법
CN1672353A (zh) * 2002-08-01 2005-09-21 皇家飞利浦电子股份有限公司 数据传输中用于速率匹配的编码和解码
US7986741B2 (en) * 2007-09-28 2011-07-26 Samsung Electronics Co., Ltd. Method and apparatus of improved circular buffer rate matching for turbo-coded MIMO-OFDM wireless systems

Also Published As

Publication number Publication date
KR20100031575A (ko) 2010-03-23
JP5499366B2 (ja) 2014-05-21
EP2171908B1 (en) 2016-10-19
WO2008157523A3 (en) 2009-02-19
RU2604992C2 (ru) 2016-12-20
BRPI0813136A2 (pt) 2014-12-23
CA2689587C (en) 2012-11-13
EP2171908B9 (en) 2017-04-19
RU2467484C2 (ru) 2012-11-20
KR101701083B1 (ko) 2017-01-31
ES2610818T3 (es) 2017-05-03
CA2689587A1 (en) 2008-12-24
US20080320353A1 (en) 2008-12-25
EP2171908A2 (en) 2010-04-07
KR20160006249A (ko) 2016-01-18
JP5791161B2 (ja) 2015-10-07
JP2010529756A (ja) 2010-08-26
KR101593700B1 (ko) 2016-02-12
EP3136638A1 (en) 2017-03-01
WO2008157523A2 (en) 2008-12-24
RU2012118754A (ru) 2013-11-10
US7890834B2 (en) 2011-02-15
EP2485426A1 (en) 2012-08-08
CN101682486A (zh) 2010-03-24
MY149949A (en) 2013-11-15
RU2010101681A (ru) 2011-07-27
JP2014060814A (ja) 2014-04-03
CN101682486B (zh) 2013-04-10

Similar Documents

Publication Publication Date Title
ZA200908521B (en) An apparatus comprising a circular buffer and method for assigning redundancy versions to a circular buffer
GB2440425B (en) Method and apparatus for converting authentication-tokens
TWI317807B (en) Positioning apparatus and method
ZA201101889B (en) Method and apparatus for providing signaling of redundancy versions
EP2094222A4 (en) SUPPORT FOR A CPR DEVICE
GB0701221D0 (en) Method and apparatus for labelling property
GB201114727D0 (en) Method and apparatus for providing a navigation summary
PL2346765T3 (pl) Urządzenie i sposób do zbierania płaskich przedmiotów
GB2473149B (en) Apparatus and method for cache utilization
EP2055009A4 (en) METHOD AND DEVICE FOR TURBO CODING
EP2135247A4 (en) DEVICE AND METHOD FOR PROVIDING CONTENT DATA
EP1998803A4 (en) DEVICE AND METHOD FOR DEVELOPING VACCINES USING ULTRASONIC TECHNOLOGY
GB0911343D0 (en) A method, apparatus and computer program
ZA201003714B (en) Method and device for mechanically processing diamond
GB0911234D0 (en) A method, apparatus and computer program
GB0611038D0 (en) Apparatus and method for cluster recovery
EP2035657A4 (en) APPARATUS AND METHOD FOR INTERVENTION ON A WELL WITHOUT USING DRILLING APPARATUS
PL1995900T3 (pl) Układ przeplatania - urządzenie i sposób
GB0721967D0 (en) Task scheduling method apparatus and computer program
GB0700343D0 (en) A method and an apparatus for data streaming
GB0608667D0 (en) Methods and apparatus for configuring interface units
EP2193606A4 (en) METHOD AND APPARATUS FOR MULTI-DESCRIPTION ENCODING
GB0708734D0 (en) A Method and apparatus for data streaming
GB0700311D0 (en) A method and an apparatus for data streaming
IL186723A0 (en) Method and apparatus for self-licensing data