公开(公告)号：JP2001069549A

公开(公告)日：2001-03-16

申请号：JP2000213584

申请日：2000-07-14

Applicant: LUCENT TECHNOLOGIES INC

Inventor： HUANG CHING YAO ,  HUANG JOE ,  WU I-FONG ANTONIO ,  WU XIAO CHENG ,  YU BEE YUN

IPC: H04B7/26 ,  H04W36/12 ,  H04W36/18 ,  H04Q7/22 ,  H04J13/00

Abstract: PROBLEM TO BE SOLVED: To reduce the call loss rate under a radio frequency(RF) environment that varies dynamically by selecting the specific value of an additional parameter according to a decided quality standard, so as to use 1st and additional handoff parameters in a soft handoff process. SOLUTION: A system 10 includes a mover (MS) 12 and base stations BS1-BS4. It is decided whether the parameter selection rule of a part 1 is started with respect to at least one of members included in an active set. When this rule is started to the member, this rule is started to all members of the active set. Thus, the specific value of an additional parameter is selected according to a decided quality standard, so that the 1st and additional handoff parameters are used in a soft handoff process.

公开(公告)号：CA2313253A1

公开(公告)日：2001-01-15

申请号：CA2313253

申请日：2000-06-29

Applicant: LUCENT TECHNOLOGIES INC

Inventor： WU I-FONG ANTONIO ,  YU BEE YUN ,  HUANG CHING YAO ,  HUANG JOE ,  WU XIAO CHENG

IPC: H04B7/26 ,  H04W36/12 ,  H04W36/18 ,  H04Q7/38

Abstract: Soft handoffs in an IS-95 CDMA system or other wireless communication syst em are controlled using an enhanced set of soft handoff parameters which allow the system to adapt more readily to changing radio frequency (RF) conditions. In an illustrative embodiment, values for particular ones of the soft handoff parameters are selected in accordance with a set of rules, including rules such as, e.g., select the minimum value of add threshold among the members of an active set of pilots for a given mobile station; select the maximum value of drop threshold among the members of the active set; select the minimum value of drop threshold timer among the members of the active set; and selec t the minimum value of comparison threshold among the members of the active set. A quality measure is then determined for each of the members of the active set, based on one or more of the selected soft handoff parameter values and values of one or more additional parameters, e.g., add intercept, drop intercept and slope parameters, associated with those members. Particular values of the additional parameters are then selected based on th e quality measures. The selected parameter values are then utilized in a soft handoff process, e.g., in a soft handoff process in which the given mobile station is directed to handoff from a primary base station to another base station of the system.

公开(公告)号：DE60026457D1

公开(公告)日：2006-05-04

申请号：DE60026457

申请日：2000-07-03

Applicant: LUCENT TECHNOLOGIES INC

Inventor： HUANG CHING YAO ,  HUANG JOE ,  WU I-FONG ANTONIO ,  WU XIAO CHENG ,  YU BEE YUN

IPC: H04B7/26 ,  H04W36/12 ,  H04W36/18

Abstract: Soft handoffs in an IS-95 CDMA system or other wireless communication system are controlled using an enhanced set of soft handoff parameters which allow the system to adapt more readily to changing radio frequency (RF) conditions. In an illustrative embodiment, values for particular ones of the soft handoff parameters are selected in accordance with a set of rules, including rules such as, e.g., select the minimum value of add threshold among the members of an active set of pilots for a given mobile station; select the maximum value of drop threshold among the members of the active set; select the minimum value of drop threshold timer among the members of the active set; and select the minimum value of comparison threshold among the members of the active set. A quality measure is then determined for each of the members of the active set, based on one or more of the selected soft handoff parameter values and values of one or more additional parameters, e.g., add intercept, drop intercept and slope parameters, associated with those members. Particular values of the additional parameters are then selected based on the quality measures. The selected parameter values are then utilized in a soft handoff process, e.g., in a soft handoff process in which the given mobile station is directed to handoff from a primary base station to another base station of the system.

公开(公告)号：DE60026457T2

公开(公告)日：2006-09-14

申请号：DE60026457

申请日：2000-07-03

Applicant: LUCENT TECHNOLOGIES INC

Inventor： HUANG CHING YAO ,  HUANG JOE ,  WU I-FONG ANTONIO ,  WU XIAO CHENG ,  YU BEE YUN

IPC: H04B7/26 ,  H04W36/12 ,  H04W36/18

Abstract: Soft handoffs in an IS-95 CDMA system or other wireless communication system are controlled using an enhanced set of soft handoff parameters which allow the system to adapt more readily to changing radio frequency (RF) conditions. In an illustrative embodiment, values for particular ones of the soft handoff parameters are selected in accordance with a set of rules, including rules such as, e.g., select the minimum value of add threshold among the members of an active set of pilots for a given mobile station; select the maximum value of drop threshold among the members of the active set; select the minimum value of drop threshold timer among the members of the active set; and select the minimum value of comparison threshold among the members of the active set. A quality measure is then determined for each of the members of the active set, based on one or more of the selected soft handoff parameter values and values of one or more additional parameters, e.g., add intercept, drop intercept and slope parameters, associated with those members. Particular values of the additional parameters are then selected based on the quality measures. The selected parameter values are then utilized in a soft handoff process, e.g., in a soft handoff process in which the given mobile station is directed to handoff from a primary base station to another base station of the system.

公开(公告)号：WO2008094426A3

公开(公告)日：2008-09-25

申请号：PCT/US2008000876

申请日：2008-01-23

Applicant: LUCENT TECHNOLOGIES INC ,  AZADA MARIA RG ,  DOLAN MICHAEL FRANCIS ,  WU I-FONG ANTONIO

Inventor： AZADA MARIA RG ,  DOLAN MICHAEL FRANCIS ,  WU I-FONG ANTONIO

IPC: H04W36/14

CPC classification number: H04W36/0022

Abstract: A method and apparatus is described for coordinating the movement of communication traffic, e.g., a voice call, from a packet switched (PS) domain to a circuit switched (CS) domain in the case that the terminal device cannot communicate with the PS and CS radio technologies simultaneously. Such movement involves the parallel activities of moving the bearer traffic routing from the PS domain to the CS domain, and of moving the radio connection from the PS radio access network to the CS radio access network. An adjustable timer is used to delay either the movement of the terminal device from the PS radio technology to the CS radio technology, or to delay the movement of bearer traffic from the PS domain to the CS domain in order to minimize the gap in bearer traffic delivery to and from the terminal device. In addition, in the case of delaying the movement at the radio access level, additional signaling is described to obtain new radio data that can improve the success rate for movement between the radio access technologies.

Abstract translation: 描述了一种方法和设备，用于在终端设备不能与PS和CS进行通信的情况下协调通信业务（例如语音呼叫）从分组交换（PS）域到电路交换（CS）域的移动 无线电技术。 这种移动涉及将承载业务路由从PS域移动到CS域并将无线电连接从PS无线电接入网移动到CS无线电接入网的并行活动。 可调定时器用于延迟终端设备从PS无线电技术到CS无线电技术的移动，或延迟承载业务从PS域到CS域的移动，以最小化承载业务量的差距 传递到终端设备和从终端设备传递。 另外，在延迟无线电接入等级的移动的情况下，描述额外的信令以获得新的无线电数据，这可以提高无线电接入技术之间移动的成功率。