公开(公告)号：MY174303A

公开(公告)日：2020-04-06

申请号：MYPI2011002860

申请日：2009-06-30

Applicant: MIMOS BERHAD

Inventor： SHAHIRINA MOHD TAHIR ,  MOHAMMED ABDO SAEED ,  MOHAMAD YUSRI MOHAMAD YUSOF ,  LOW SWEE LEONG ,  MOHAMAD ZARIN ABDUL AZIZ ,  AZMI YAACOB ,  WAN ZAWAWI ,  SYAIFUL HAZLI HAMDAN

Abstract: A method of producing signals to emulate TETRA direct mode physical layer to a broadband network, particularly WiMAX network is disclosed. Frames of broadband signals are arranged as a time slot to form a direct mode multiframe, said multiframe is made up of 18 direct mode frames according to TETRA direct mode specification. Two time slots are provided for a call transaction, a first and third time slot within a direct mode frame, for every communication channel. A proper modulation is later assigned for each direct mode burst including linearization burst, synchronization burst and normal burst. The preamble of direct mode burst shall be different from the one used for WiMAX.

公开(公告)号：MY185809A

公开(公告)日：2021-06-10

申请号：MYPI2012700869

申请日：2012-11-02

Applicant: MIMOS BERHAD

Inventor： AZMI YAACOB ,  OOI HOEY YEW ,  AHMAD ZAKI ABU BAKAR ,  PUTRI SHAHNIM KHALID

IPC: H04W4/90

Abstract: Described herein are a system (100) and a method (200) that permit dynamic regrouping of call groups (107) (108) on an IP-based wireless communication network (114), wherein each of the call groups consists of a plurality of members having mobile stations (109) (110) (111) (112). In other words, the dynamic regrouping of the present invention permits the members of different call groups (107) (108) to communicate with each other during the occurrence of an event, e.g. an emergency event, without prior knowledge of each other identity. In general, the call groups (107) (108) are clustered together by a dynamic regrouping server (DRS) (102) to form a virtual group (113), which allows direct transmission of data from a base station (105) (106) to the members having mobile stations (109) (110) (111) (112) within the selected call groups (107) (108) via the said virtual group (113).

公开(公告)号：MY172756A

公开(公告)日：2019-12-11

申请号：MYPI2012001704

申请日：2012-04-16

Applicant: MIMOS BERHAD

Inventor： AZMI YAACOB ,  PUTRI SHAHNIM KHALID

IPC: H04L1/00 ,  H04W4/08 ,  H04W72/00

Abstract: A method where the base station (BS) will ensure the best quality of the multicast data is transmitted by dynamically changing the modulation and coding scheme by which the multicast data is sent to the mobile stations (MS), depending on the factors related to the channel condition of the area the MS have moved to, dynamically moving the MS to a new group based on the modulation and coding scheme that has been selected, assigning a new multicast address to the new group, and the movement of the MS is locally done by the BS, without the intervention of the Access Service Network Gateway (ASN-GW).

公开(公告)号：MY161005A

公开(公告)日：2017-03-31

申请号：MYPI2011700208

申请日：2011-12-29

Applicant: MIMOS BERHAD

Inventor： AZMI YAACOB ,  NORDIN BIN RAMLI ,  HAFIZAL BIN MOHAMAD @ DIN ,  WAHIDAH BINTI HASHIM ,  AHMAD ZAKI BIN ABU BAKAR

IPC: H04W88/00 ,  H04W84/00

Abstract: The present invention relates to a wireless communication system. The wireless communication system is equipped with multiple antennas (210, 310) to work with lower number of radio in a wireless mesh network. The wireless communication system includes an enhanced mesh coordinated channel access (MCCA) module (223, 323) to provide reservation of contention free time slots and to map the direction of source and destination nodes in the wireless mesh network. Moreover, the wireless communication system further includes an antenna selection module (250, 350) to select the appropriate antenna (210, 310) to be employed during transmission and reception of data in the wireless mesh network. In order to ensure synchronization between the MCCA module (223, 323) and the antenna selection module (250, 350), a synchronization module (260, 360) is provided in the wireless communication system.

公开(公告)号：MY178243A

公开(公告)日：2020-10-07

申请号：MYPI2015701235

申请日：2015-04-17

Applicant: MIMOS BERHAD

Inventor： AZMI YAACOB ,  PUTRI SHAHNIM KHALID ,  OOI HOEW YEW ,  AHMAD ZAKI ABU BAKAR

Abstract: The present invention relates to an improved system and method for managing a talkgroup in an intelligent cloud communication network. The present invention allows participation of any mobile stations having diversity in term of hardware and architectures in the talkgroup on wireless communication networks such as WiMAX, Wi-Fi, LTE, etc., and maintain the talkgroup communication between the mobile stations (200) during the network downtime. The system comprises a cloud base station (400) connected to the base station (100) comprising a master cloud arbitrator (401) and a cell site cloud arbitrator (402). The master cloud arbitrator (401) comprises a primary talkgroup controller (401a) for processing a talkgroup request received from the base station (100). The cell site cloud arbitrator (402) comprises a secondary talkgroup controller (402a) for processing the talkgroup request redirected from the primary talkgroup controller (401a) during a connection failure to the master cloud arbitrator (401) via a local mesh network formed by the base station (100) and the backhaul point (300). Figure 1

公开(公告)号：MY168829A

公开(公告)日：2018-12-04

申请号：MYPI2010700081

申请日：2010-11-09

Applicant: MIMOS BERHAD

Inventor： WAHIDAH HASHIM ,  AZMI YAACOB ,  NORDIN RAMLI

Abstract: A method of detecting signals transmitted using differential cyclic delay diversity is provided, the method includes the steps of computing a plurality of fading coefficient matrices (101), wherein the fading coefficient matrices (101) are generated using received sequences of Nm observation symbols; determining possible transmitted symbol based on communication data (102), wherein the communication data (102) is a set Sv(n) of possible information symbols; computing transmitted symbol based on an algorithm (103), wherein the transmitted symbol is able to be computed by solving an optimisation problem; and determining maximum value of estimated symbol sequence (104), wherein the maximum value is maximum likelihood detection that is specifying used in finding the transmitted symbol; wherein the transmitted symbols are based on communication data such as M-ary communication data and the method is a Multiple Symbol Differential Detection (MSDD) for wireless communication.