WO2015078379A1 - 一种ue中的方法和用户设备 - Google Patents
一种ue中的方法和用户设备 Download PDFInfo
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- WO2015078379A1 WO2015078379A1 PCT/CN2014/092312 CN2014092312W WO2015078379A1 WO 2015078379 A1 WO2015078379 A1 WO 2015078379A1 CN 2014092312 W CN2014092312 W CN 2014092312W WO 2015078379 A1 WO2015078379 A1 WO 2015078379A1
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- scrambling
- initial value
- slot index
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- module
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J13/00—Code division multiplex systems
- H04J13/10—Code generation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03828—Arrangements for spectral shaping; Arrangements for providing signals with specified spectral properties
- H04L25/03866—Arrangements for spectral shaping; Arrangements for providing signals with specified spectral properties using scrambling
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/14—Direct-mode setup
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/69—Spread spectrum techniques
- H04B1/707—Spread spectrum techniques using direct sequence modulation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
- H04J11/0023—Interference mitigation or co-ordination
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J13/00—Code division multiplex systems
- H04J13/0007—Code type
- H04J13/0022—PN, e.g. Kronecker
- H04J13/0029—Gold
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J13/00—Code division multiplex systems
- H04J13/0007—Code type
- H04J13/0055—ZCZ [zero correlation zone]
- H04J13/0059—CAZAC [constant-amplitude and zero auto-correlation]
- H04J13/0062—Zadoff-Chu
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J2211/00—Orthogonal indexing scheme relating to orthogonal multiplex systems
- H04J2211/003—Orthogonal indexing scheme relating to orthogonal multiplex systems within particular systems or standards
- H04J2211/005—Long term evolution [LTE]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
- H04W88/04—Terminal devices adapted for relaying to or from another terminal or user
Definitions
- the present invention relates to a scheme for scrambling codes in device-to-device (D2D-Device to Device) communication, and more particularly to a LTE-Long Term Evolution D2D-based scrambling scheme.
- D2D-Device to Device device-to-device
- PUSCH-Physical Uplink Share Channel Physical Uplink Share Channel
- CQI- Channel Quality Indicator uses scrambling code operation:
- b(i), c(i) are the i-th bit of the scrambled data, the i-th bit of the data before the scrambling code, and the i-th bit of the scrambling sequence, respectively.
- c(i) is determined by the pseudo-random sequence (Gold Sequence). For details, refer to section 7.2 of TS-Technical Specification 36.211, where the initial value of the second m-sequence generator is:
- n RNTI , n s They are the RNTI-Radio Network Temporary Identifier of the UE, the index of the time slot of the PUSCH in the frame, the ID-Identifier of the UE, and q is 0 or 1-for the most identification. 2 code words.
- D2D-Device to Device In the traditional 3GPP version, data transmission takes place between the base station and the user equipment (UE-User Equipment). In 3GPP R12, device-to-device (D2D-Device to Device) communication is proposed and discussed. The essential feature of D2D is to allow data transmission between UEs. For FDD and TDD systems, 3GPP concluded at the 73rd meeting of the Radio Access Network Working Group (RAN1#73) that the UEs in the D2D system are not allowed to transmit and receive at the same time.
- RAN1#73 Radio Access Network Working Group
- the UE occupies a conventional uplink resource, that is, an uplink frequency band of an FDD and an uplink subframe of a subframe (TDD) for D2D communication (a TDD downlink subframe is to be further discussed).
- a TDD downlink subframe is to be further discussed.
- the subframe for D2D communication adopts the multiple access method of SC-FDMA.
- the physical channel for D2D communication is reused as much as possible.
- the structure of the LTE PUSCH includes channel coding, demodulation reference signals, cyclic redundancy check codes, scrambling codes, and the like.
- the initial value of the conventional PUSCH scrambling sequence generator is the physical ID and slot index of the serving cell of the UE by the RNTI of the UE.
- the allocation of the physical ID of the RNTI and the serving cell needs to be further optimized, mainly including:
- Radio Resource Control Idle state within the network coverage determine the RNTI?
- the base station distinguish whether the received signal is a D2D signal or an uplink signal of a neighboring cell?
- the present invention discloses a scrambling scheme in D2D communication.
- the invention discloses a method in a user equipment (UE), which comprises the following steps:
- first ID is an element in a set of integers from 0 to 65535
- second ID is an element in a set of integers from 504 to 3080
- slot index being an element in an integer set from 0 to 19.
- the above-mentioned integer set of 0 to 65535 is a set of values of RNTI (hexadecimal numbers from 0000 to FFFF).
- the value range of the second ID is a formula for reusing the initial value of the existing PUSCH scrambling sequence generator and is calculated by replacing the cell physical ID with the second ID, and 504 to 3080 are reserved values that have not yet been allocated.
- the above integer set from 0 to 19 is a set of values of n s .
- the above method implements interference randomization of D2D data and LTE uplink data, and avoids serious interference caused by the same physical ID of the cell.
- the UE is outside the network coverage, and the second ID is a fixed value X.
- the X is -1.
- the UE is outside a network coverage, and the first ID is determined by an IMSI (International Mobile Equipment Identity) of the UE.
- IMSI International Mobile Equipment Identity
- the IMEI is a globally unique identifier of the UE, and obtaining the first ID by using the IMEI can effectively randomize the inter-user interference.
- the first ID is equal to mod (IMEI, 2 16 ).
- the UE is in a network coverage
- the second ID is a physical ID of the serving cell of the UE plus an offset value Y
- the Y is an integer
- the above aspect of the present invention enables the base station to distinguish whether the received signal is a D2D signal or an interference signal of a neighboring cell, which is advantageous for interference cooperative operation between base stations.
- the Y is 504.
- the slope of the first ID to the initial value is 16384, and the slope of the second ID to the initial value is 1.
- the calculation of the initial value reuses an initial value generation formula of a scrambling code sequence generator of the PUSCH, wherein the first ID and the second ID replace the n RNTI and the respectively which is
- the step A further includes the following steps:
- Sending a wireless signal indicates at least one of the following:
- the wireless signal comprises at least one of the following:
- the invention discloses a method in a UE, which comprises the following steps:
- first ID is an element in a set of integers from 0 to 65535
- second ID is an element in a set of integers from 504 to 3080
- slot index being an element in an integer set from 0 to 19.
- the UE is outside the network coverage, and the second ID is a fixed value X.
- the UE is outside a network coverage
- the first ID is determined by an IMEI of the UE.
- the UE is in a network coverage
- the second ID is a physical ID of the serving cell of the UE plus an offset value Y
- the Y is an integer
- the step A further includes the following steps:
- Receiving a wireless signal determines at least one of the following:
- the invention discloses a user equipment, characterized in that the device comprises:
- First module used to determine the initial value of the scrambling sequencer
- the second module used to generate a D2D scrambling sequence
- a third module for scrambling D2D data using the D2D scrambling code sequence to And sending the D2D data subjected to the scrambling operation.
- the initial value is determined by at least one of the following:
- the first module is further configured to send the wireless signal to indicate at least one of the following:
- the invention discloses a user equipment, characterized in that the device comprises:
- First module used to determine the initial value of the scrambling sequencer
- the second module used to generate a D2D scrambling sequence
- the third module is configured to receive the D2D data subjected to the scrambling operation and perform descrambling operation on the demodulated D2D data by using the D2D scrambling code sequence.
- the initial value is determined by at least one of the following:
- the first module is further configured to receive the wireless signal to determine at least one of the following:
- the present invention solves the problem of initialization of a scrambling code sequence generator in a D2D system.
- the D2D UE can reuse the initialization formula of the existing PUSCH scrambling code generator.
- the base station can distinguish between the D2D signal and the uplink signal.
- the IMEI is associated with the first ID, and the interference between the D2D signals is randomized.
- the invention can simultaneously support D2D UEs within the cell coverage and outside the cell coverage.
- FIG. 1 shows a flow chart for determining D2D communication in accordance with one embodiment of the present invention
- FIG. 2 is a block diagram showing the structure of a scrambling code processing apparatus in a user equipment according to an embodiment of the present invention
- FIG. 3 is a block diagram showing the structure of a descrambling processing apparatus in a user equipment according to an embodiment of the present invention
- Embodiment 1 illustrates a flow chart of D2D communication, as shown in FIG.
- UE U10 and UE U11 are two UEs for D2D communication.
- step S101 transmitting a wireless signal indicates at least one of the following:
- step S102 an initial value of the scrambling code sequence generator is determined, the initial value being determined by at least one of:
- the D2D data is scrambled using the D2D scrambling code sequence in step S104 and the D2D data subjected to the scrambling operation is transmitted.
- the scrambled D2D data is modulated and transmitted by UE U10 to UE U11.
- step S111 the receiving wireless signal determines at least one of the following:
- step S112 an initial value of the scrambling code sequence generator is determined, the initial value being determined by at least one of:
- the slot index is from 0 to 19.
- An element in an integer set wherein the first ID is an element in a set of integers from 0 to 65535, and the second ID is an element in a set of integers from 504 to 3080, the slot index is from 0 to 19.
- An element in an integer set The initial value and at least one of the following are linear relationships:
- the UE U10 is outside the network coverage, and the second ID Is a fixed value of X.
- Embodiment 2 exemplifies a structural block diagram of a scrambling code processing apparatus in a user equipment, as shown in FIG.
- the UE processing apparatus 400 is composed of a transmitting module 401, a generating module A402, and a scrambling module 403.
- the sending module 401 is configured to send a wireless signal indicating one or more of a first ID, a second ID, and a slot index.
- the sending module 401 is further configured to determine an initial value of the scrambling code sequence generator, the initial value being determined by one or more of the first ID, the second ID, and the slot index.
- the initial value and the first ID are linear relationships, and the initial value and the second ID are linear relationships.
- the generating module A402 is configured to generate a D2D scrambling code sequence.
- the scrambling code module 403 is configured to perform scrambling operation on the D2D data and transmit the D2D data subjected to the scrambling operation using the D2D scrambling code sequence.
- the first ID is an element in a set of values of the RNTI
- the slot index is an element in a set of values of n s
- the second ID is an element in a set of integers from 504 to 3080 or an element in a set of integers from -2576 to -1.
- Embodiment 3 exemplifies a structural block diagram of a descrambling processing apparatus in a user equipment, as shown in FIG.
- the UE processing apparatus 500 is composed of a receiving module 501, a generating module B502, and a descrambling module 503.
- the receiving module 501 is configured to receive the wireless signal to determine one or more of the first ID, the second ID, and the slot index.
- the receiving module 501 is further configured to determine an initial value of the scrambling code sequence generator, the initial value being determined by one or more of a first ID, a second ID, and a slot index.
- the initial value and the first ID are linear relationships
- the initial value and the second ID are linear relationships.
- the generating module B502 is configured to generate a D2D scrambling code sequence.
- the descrambling module 503 is configured to receive the scrambled D2D data and perform descrambling on the demodulated D2D data using the D2D scrambling sequence.
- the first ID is an element in a set of integers from 0 to 65535
- the second ID is an element in a set of integers from 504 to 3080, the slot index being an integer set from 0 to 19. An element of it.
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Abstract
Description
Claims (19)
- 一种UE中的方法,其特征在于,包括如下步骤:A.确定扰码序列发生器的初始值,所述初始值由以下至少之一确定:-第一ID;-第二ID;-时隙索引;B.生成D2D扰码序列;C.使用所述D2D扰码序列对D2D数据进行扰码操作;其中,第一ID是从0到65535的整数集合中的一个元素,第二ID是从504到3080的整数集合中的一个元素,所述时隙索引是从0到19的整数集中的一个元素;所述初始值和以下至少之一是线性关系:-第一ID;-第二ID;-所述时隙索引。
- 根据权利要求1所述的UE中的方法,其特征在于,所述UE处于网络覆盖外,第二ID是固定值X。
- 根据权利要求1所述的UE中的方法,其特征在于,所述UE处于网络覆盖外,第一ID由所述UE的IMEI确定。
- 根据权利要求1所述的UE中的方法,其特征在于,所述UE处于网络覆盖内,第二ID是所述UE的服务小区的物理ID加上偏移值Y,所述Y是整数。
- 根据权利要求1所述的UE中的方法,其特征在于,第一ID到所述初始值的斜率是16384,第二ID到所述初始值的斜率是1。
- 根据权利要求1-5中任一项所述的UE中的方法,其特征在于,所述步骤A还包括如下步骤:A0.发送无线信号指示以下至少之一:-第一ID;-第二ID;-所述时隙索引。
- 根据权利要求1所述的UE中的方法,其特征在于,还包括如下 步骤:D.发送经过扰码操作的D2D数据。
- 一种UE中的方法,其特征在于,包括如下步骤:A.确定扰码序列发生器的初始值,所述初始值由以下至少之一确定:-第一ID;-第二ID;-时隙索引;B.生成D2D扰码序列;C.使用所述D2D扰码序列对解调出的D2D数据进行解扰操作;其中,第一ID是从0到65535的整数集合中的一个元素,第二ID是从504到3080的整数集合中的一个元素,所述时隙索引是从0到19的整数集中的一个元素;所述初始值和以下至少之一是线性关系:-第一ID;-第二ID;-所述时隙索引。
- 根据权利要求8所述的UE中的方法,其特征在于,所述UE处于网络覆盖外,第二ID是固定值X。
- 根据权利要求8所述的UE中的方法,其特征在于,所述UE处于网络覆盖外,第一ID由所述UE的IMEI确定。
- 根据权利要求8所述的UE中的方法,其特征在于,所述UE处于网络覆盖内,第二ID是所述UE的服务小区的物理ID加上偏移值Y,所述Y是整数。
- 根据权利要求8所述的UE中的方法,其特征在于,所述C,具体为:接收经过扰码操作的D2D数据,使用所述D2D扰码序列对解调出的D2D数据进行解扰操作。
- 根据权利要求8-12中任一项所述的UE中的方法,其特征在于,所述步骤A还包括如下步骤:A0.接收无线信号确定以下至少之一:-第一ID;-第二ID;-所述时隙索引。
- 一种用户设备,其特征在于,该用户设备包括:第一模块:用于确定扰码序列发生器的初始值;第二模块:用于生成D2D扰码序列;第三模块:用于使用所述D2D扰码序列对D2D数据进行扰码操作;其中,第一ID是从0到65535的整数集合中的一个元素,第二ID是从504到3080的整数集合中的一个元素,所述时隙索引是从0到19的整数集中的一个元素;所述初始值由以下至少之一确定:-第一ID;-第二ID;-时隙索引;所述初始值和以下至少之一是线性关系:-第一ID;-第二ID;-所述时隙索引。
- 根据权利要求14所述的用户设备,其特征在于,第一模块还用于发送无线信号指示以下至少之一:-第一ID;-第二ID;-所述时隙索引。
- 根据权利要求14所述的用户设备,其特征在于,第三模块:还用于发送经过扰码操作的D2D数据。
- 一种用户设备,其特征在于,该用户设备包括:第一模块:用于确定扰码序列发生器的初始值;第二模块:用于生成D2D扰码序列;第三模块:用于使用所述D2D扰码序列对解调出的D2D数据进行解扰操作;其中,第一ID是从0到65535的整数集合中的一个元素,第二ID是从504到3080的整数集合中的一个元素,所述时隙索引是从0到19 的整数集中的一个元素;所述初始值由以下至少之一确定:-第一ID;-第二ID;-时隙索引;所述初始值和以下至少之一是线性关系:-第一ID;-第二ID;-所述时隙索引。
- 根据权利要求17所述的用户设备,其特征在于,第一模块还用于接收无线信号确定以下至少之一:-第一ID;-第二ID;-所述时隙索引。
- 根据权利要求17所述的用户设备,其特征在于,第三模块:还用于接收经过扰码操作的D2D数据。
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US14/892,937 US20160112221A1 (en) | 2013-11-27 | 2014-11-23 | Method for ue and user equipment |
EP14865190.4A EP3076747A4 (en) | 2013-11-27 | 2014-11-26 | Method for ue and user equipment |
KR1020167011306A KR102302025B1 (ko) | 2013-11-27 | 2014-11-26 | Ue 사용자 장비를 위한 방법 |
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- 2014-11-26 CN CN201811579535.3A patent/CN111246446B/zh active Active
- 2014-11-26 KR KR1020167011306A patent/KR102302025B1/ko active IP Right Grant
- 2014-11-26 EP EP14865190.4A patent/EP3076747A4/en not_active Withdrawn
- 2014-11-26 WO PCT/CN2014/092312 patent/WO2015078379A1/zh active Application Filing
- 2014-11-26 CN CN201410697509.6A patent/CN104683969B/zh active Active
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Also Published As
Publication number | Publication date |
---|---|
KR102302025B1 (ko) | 2021-09-14 |
CN104683969B (zh) | 2019-03-29 |
US20160112221A1 (en) | 2016-04-21 |
CN111246446B (zh) | 2022-12-20 |
EP3076747A4 (en) | 2017-08-23 |
CN111246446A (zh) | 2020-06-05 |
KR20160091318A (ko) | 2016-08-02 |
EP3076747A1 (en) | 2016-10-05 |
CN104683969A (zh) | 2015-06-03 |
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