公开(公告)号：EP1595337A4

公开(公告)日：2006-07-05

申请号：EP04710293

申请日：2004-02-11

Applicant: INTERDIGITAL TECH CORP

Inventor： ZEIRA ELDAD ,  ZHANG GUODONG ,  TERRY STEPHEN E ,  MILLER JAMES M

IPC: H04L1/00 ,  H04W28/10 ,  H04W28/22 ,  H04B1/38

CPC classification number: H04W28/0236 ,  H04L1/0002 ,  H04L1/0015 ,  H04L1/0026 ,  H04L1/203 ,  H04L47/22 ,  H04W24/02 ,  H04W28/10 ,  H04W28/22 ,  H04W36/0011

Abstract: A wireless communication method and system for controlling the current data bit rate of a radio link (RL) to maintain the quality of the RL. The system includes a core network (CN), a radio network controller (RNC) and at least one wireless transmit/receive unit (WTRU). The RL is established between the RNC and the WTRU. The RNC establishes a guaranteed data bit rate, a maximum data bit rate and a current data bit rate associated with the RL. When the RNC senses an event which indicates that the quality of the RL has substantially deteriorated, the RNC reduces the value of the current data bit rate. Then, in a recovery process, if a similar event does not occur during an established waiting period, the RNC restores the current data bit rate back to the maximum data bit rate.

公开(公告)号：EP1550228A4

公开(公告)日：2005-11-23

申请号：EP03749778

申请日：2003-09-19

Applicant: INTERDIGITAL TECH CORP

Inventor： ZEIRA ELDAD ,  ZEIRA ARIELA

IPC: H04B1/707 ,  H04L1/00 ,  H04B1/10 ,  H04B1/38 ,  H04B7/00 ,  H04B7/02 ,  H04B7/12

CPC classification number: H04L1/0001 ,  H04B1/71075 ,  H04B7/022 ,  H04B2201/70701 ,  H04B2201/70702

Abstract: At least one desired communication signal is received by a receiver. The at least one desired communication signal is transmitted in a wireless format of a cell. A plurality of communication signals are received. Communication signals are selected from the plurality. The selected communication signals include each desired communication signal and at least one communication signal originating from another cell. A channel estimate is produced for each selected communication signal. Data is jointly detected for the selected communication signals.

Abstract translation: 至少一个期望的通信信号由接收器接收。 该至少一个期望的通信信号以小区的无线格式发送。 接收多个通信信号。 通信信号从多个中选择。 所选择的通信信号包括每个期望的通信信号和源自另一个小区的至少一个通信信号。 为每个选定的通信信号产生信道估计。 为选定的通信信号共同检测数据。

公开(公告)号：EP1388223A4

公开(公告)日：2009-08-26

申请号：EP02736755

申请日：2002-05-13

Applicant: INTERDIGITAL TECH CORP

Inventor： ZEIRA ELDAD ,  ZHANG GUODONG

IPC: H04B7/26 ,  H04J3/00 ,  H04W72/08 ,  H04B7/204

CPC classification number: H04W72/082 ,  H04B7/2618

Abstract: A physical channel of a user service is provided for assignment to a set of time slots in a hybrid time division multiple access/code division multiple access wireless communication system. A measure of interference is determined for each of the set of time slots. A fragmentation parameter is provided. The fragmentation parameter represents a preference for fragmenting user service physical channels over time slots. The user service physical channel is assigned to one of the set of time slots using the measured interference associated with each of the set of time slots and the fragmentation parameter.

公开(公告)号：EP1388263A4

公开(公告)日：2008-07-09

申请号：EP02729192

申请日：2002-05-14

Applicant: INTERDIGITAL TECH CORP

Inventor： TERRY STEPHEN E ,  DICK STEPHEN G ,  MILLER JAMES M ,  ZEIRA ELDAD ,  ZEIRA ARIELA

IPC: H04B1/707 ,  H04B7/005 ,  H04B7/26 ,  H04W52/14 ,  H04W52/22 ,  H04W52/24

CPC classification number: H04W52/146 ,  H04L5/1469 ,  H04W52/228 ,  H04W52/24 ,  H04W52/241 ,  H04W52/242 ,  H04W52/243 ,  H04W52/246 ,  H04W52/247 ,  H04W52/26 ,  H04W72/085 ,  H04W88/02 ,  H04W88/08 ,  Y02B60/50

Abstract: An uplink signal may be transmitted by a user equipment (UE) in a time interval using an uplink control channel. The uplink signal may include hybrid automatic repeat request (H-ARQ) control information related to received downlink data. If the UE determines that information indicating a coding and modulation is to be transmitted at a same time interval as the H-ARQ control information, the uplink signal may include the information that indicates the coding and modulation.

公开(公告)号：EP1779623A4

公开(公告)日：2007-10-31

申请号：EP05785474

申请日：2005-08-11

Applicant: INTERDIGITAL TECH CORP

Inventor： KWAK JAEYOUNG ,  OLESEN ROBERT LIND ,  BULTAN AYKUT ,  ZEIRA ELDAD ,  KOO CHANG-SOO ,  OZLUTURK FATIH ,  HUANG YUEJIN ,  PASAD KALPENDU R

IPC: H04J99/00 ,  H04L27/08

CPC classification number: H04L1/0606 ,  H04B7/0417 ,  H04B7/0626 ,  H04B7/0632 ,  H04B7/066 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0026 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/006 ,  H04L27/156 ,  H04L27/2626 ,  H04L2027/0046 ,  Y02D50/10

Abstract: The present invention is related to a method and apparatus for implementing space frequency block coding (SFBC) in an orthogonal frequency division multiplexing (OFDM) wireless communication system. The present invention is applicable to both a closed loop mode and an open loop mode. In the closed loop mode, power loading and eigen-beamforming are performed based on channel state information (CSI). A channel coded data stream is multiplexed into two or more data streams. Power loading is performed based on the CSI on each of the multiplexed data streams. SFBC encoding is performed on the data streams for each of the paired subcarriers. Then, eigen-beamforming is performed based on the CSI to distribute eigenbeams to multiple transmit antennas. The power loading may be performed on two or more SFBC encoding blocks or on each eigenmodes. Additionally, the power loading may be performed across subcarriers or subcarrier groups for weak eigenmodes.

Abstract translation: 本发明涉及一种用于在正交频分复用（OFDM）无线通信系统中实现空间频率块编码（SFBC）的方法和装置。本发明适用于这两种闭环模式和开环模式。 在闭环模式中，功率负载和自波束形成是基于信道状态信息（CSI）进行。 一种信道编码后的数据流被多路复用成两个或多个数据流。 电力负荷是基于CSI在每个复用数据流的执行。 SFBC编码执行对每个成对的副载波的数据流。 然后，自波束形成执行基于CSI分发自束多个发射天线。 功率负载可以在两个或更多个SFBC编码数据块或每个本征模式来执行。 另外，功率负载可以跨越子载波或子载波组来执行用于弱本征模式。

公开(公告)号：EP1565997A4

公开(公告)日：2006-05-03

申请号：EP03783659

申请日：2003-11-18

Applicant: INTERDIGITAL TECH CORP

Inventor： ZEIRA ELDAD ,  SHIN SUNG-HYUK

IPC: H04B7/005 ,  H04L12/56 ,  H04W16/10 ,  H04W16/14 ,  H04W28/04 ,  H04W52/00 ,  H04W52/28 ,  H04W52/54 ,  H04W72/08 ,  H04W74/04 ,  H04B7/00 ,  H04Q7/36

CPC classification number: H04W52/283 ,  H04W16/10 ,  H04W16/14 ,  H04W24/10 ,  H04W52/281 ,  H04W52/282 ,  H04W52/54 ,  H04W72/0446 ,  H04W72/06 ,  H04W72/082 ,  H04W74/04

Abstract: A method and system for assigning uplink (UL) slots (36-1 - 36-15) to optimize time division duplex (TDD) UL power. In order to assure proper power control gain, UL slots (36-1 - 36-15) are judiciously allocated close to the beacon slot. The UL slots (36-1 - 36-15) may be allocated based on channel sensing. All users are sorted in the order of reducing fading losses. Sorting information is also used to allocate the UL slots (36-1 - 36-15). The UL slots (36-1 - 36-15) may also be allocated based on signal interference information, code usage availability estimates and spread signal interference values. Alternatively, block error rate (BLER) and signal to interference ratio (SIR) measurements may be used to allocate the UL slots (36-1 - 36-15).

公开(公告)号：EP1391126A4

公开(公告)日：2004-06-23

申请号：EP02725658

申请日：2002-04-15

Applicant: INTERDIGITAL TECH CORP

Inventor： TERRY STEPHEN E ,  DICK STEPHEN G ,  MILLER JAMES M ,  ZEIRA ELDAD ,  ZEIRA ARIELA

IPC: H04B7/26 ,  H04J3/06 ,  H04L1/00 ,  H04L12/56 ,  H04W24/00 ,  H04W28/22 ,  H04W72/04 ,  H04W72/12 ,  H04B17/00 ,  H04Q7/20

CPC classification number: H04W72/087 ,  H04B17/24 ,  H04B17/309 ,  H04B17/382 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0026 ,  H04L1/0027 ,  H04W72/042 ,  H04W72/085 ,  H04W72/10 ,  H04W72/1231 ,  H04W72/1278

Abstract: A wireless digital communication method for communicating between a base station (12) and a plurality of user equipment mobile terminals (UEs 30) and employs adaptive modulation and coding to achieve improved radio resource utilization and provide optimum data rates for user services. Blocks of downlink (DL) data are received by the base station which requests downlink DL channel quality measurements only from those mobile terminals (30) with pending downlink transmissions. The UEs respond to the request by measuring and reporting DL Channel quality to the base station, which then allocates resources such that the UEs will make best use of radio resources. The base station notifies the UEs of the physical channel allocation indicating the modulation/coding rate and allocated slots followed by transmission of blocks of downlink data which are transmitted to the UEs.

Abstract translation: 一种用于在基站（12）和多个用户设备移动终端（UE30）之间进行通信的无线数字通信方法，并采用自适应调制和编码来实现改进的无线电资源利用并为用户服务提供最佳数据速率。 下行链路（DL）数据块由基站仅从具有待决下行链路传输的那些移动终端（30）请求下行链路DL信道质量测量的基站接收。 UE通过测量并向基站报告DL信道质量来响应该请求，基站然后分配资源，使得UE将充分利用无线电资源。 基站通知UE指示调制/编码率和分配时隙的物理信道分配，随后传输发送给UE的下行链路数据块。

公开(公告)号：EP1842383A4

公开(公告)日：2013-01-23

申请号：EP06718848

申请日：2006-01-19

Applicant: INTERDIGITAL TECH CORP

Inventor： CHANDRA ARTY ,  LEVY JOSEPH S ,  GRANDHI SUDHEER A ,  ZEIRA ELDAD

IPC: H04W76/02 ,  H04W28/16 ,  H04W84/18

CPC classification number: H04W28/16 ,  H04W76/023 ,  H04W84/18

Abstract: A peer-to-peer communication system using a direct link setup (DLS) is disclosed. A mobile station (STA) establishes a direct communication link with another STA by sending a message requesting a DLS to an access point (AP), (i.e., a centralized controller). The AP may accept or reject the DLS request based on channel measurements. If the DLS request is accepted, the DLS is established such that the STAs may directly communicate with each other. An established DLS connection may be torn down by the AP sending a message including a DLS teardown request to one of the STAs, or based on channel measurements. The system may be an Ad hoc network comprising a plurality of STAs without an AP where each STA maintains a database of one-hop and two-hop STAs, and establishes a direct link to other STAs after informing neighboring STAs of an intention to establish a direct communication link.

公开(公告)号：EP1425871A4

公开(公告)日：2006-06-28

申请号：EP02768527

申请日：2002-08-13

Applicant: INTERDIGITAL TECH CORP

Inventor： ZEIRA ELDAD ,  ZEIRA ARIELA ,  TERRY STEPHEN E

IPC: H04W36/08 ,  H04B7/26 ,  H04W36/30

CPC classification number: H04W36/30

Abstract: A time division duplex method for determining whether to initiate handover of a mobile unit from a serving base station to a target base station, the method comprises receiving the broadcast channel (52) from the serving base station (BCHser); calculating (54) the serving base station received signal code power (RSCPser); receiving the broadcast channel (56) from the target base station (BCHtar); calculating the target base station (58) received signal code power (RSCPtar); determining interference signal code power (60) for the serving base station (ISCPser); determining interference signal code power (60) for the target base station (ISCPtar); calculating (62) RSCPser/ISCPser; calculating (62) RSCPtar/ISCPtar; and determining whether RSCPser/ISCPser is less than RSCPtar/ISCPtar, and if so, commencing handover (68) from the serving base station to the target base station.

公开(公告)号：EP1510019A4

公开(公告)日：2005-08-24

申请号：EP03738946

申请日：2003-05-21

Applicant: INTERDIGITAL TECH CORP

Inventor： ZEIRA ELDAD ,  LA SITA FRANK

IPC: H04B7/005 ,  H04W16/22 ,  H04W24/00 ,  H04W52/50 ,  H04W72/04 ,  H04B7/216 ,  H04Q7/36

CPC classification number: H04W52/50 ,  H04W16/22 ,  H04W24/00 ,  H04W72/08

Abstract: A wireless code division multiple access communication system is modeled. A plurality of snapshots is provided. Each snapshot has a plurality of user equipments (UEs) and base stations. The locations of the UEs in a snapshot vary between the snapshots. For each snapshot, the UEs are assigned to base stations. Resources are sequentially assigned to each UE or groups of UEs (step 28) and a transmission power level for each UE is determined (step 30). For each sequential assignment, an updated transmission power level for any previously assigned UEs is determined. Dropped, served and not admitted (blocked) UEs in the snapshot are determined. Statistics on the performance of the system are gathered using the determined dropped, served and blocked UEs.

Abstract translation: 建模无线码分多址通信系统。 提供了多个快照。 每个快照具有多个用户设备（UE）和基站。 快照中的UE的位置在快照之间变化。 对于每个快照，UE被分配给基站。 资源被顺序地分配给每个UE或UE组（步骤28），并确定每个UE的传输功率电平（步骤30）。 对于每个顺序分配，确定任何先前分配的UE的更新的传输功率电平。 丢弃，服务并且未被接纳（阻止）快照中的UE被确定。 使用确定的丢弃，服务和被阻止的UE收集系统性能的统计数据。