Content deleted Content added
Added MoCA link. MoCA is also TDMA based with static and dynamic timeslot allocation. Tags: Visual edit Mobile edit Mobile web edit |
m Cleaned up using AutoEd |
||
Line 56:
TDMA (Time Division Multiple Access) is a communication method that allocates radio frequency (RF) bandwidth into discrete time slots, allowing multiple users to share the channel in a sequential manner. This approach not only improves spectrum efficiency compared to analog systems but also offers several specific advantages that enhance communication quality and system performance.<ref>{{Cite web |title=What is Time Division Multiple Access (TDMA)? |url=https://www.techtarget.com/searchnetworking/definition/TDMA |access-date=2024-10-28 |website=Networking |language=en}}</ref>
=== Advantages of TDMA
# '''Enhanced Spectrum Efficiency''': TDMA maximizes the use of available bandwidth by allowing multiple users to share the same channel without overlapping. Each user is assigned a specific time slot, ensuring that the channel's capacity is fully utilized, thereby increasing overall system efficiency.
Line 67:
# '''Improved Quality of Service (QoS)''': With the ability to assign specific time slots and manage user access dynamically, TDMA can enhance the overall quality of service. This can lead to reduced latency and increased throughput, ensuring that users experience reliable and efficient communication.
=== Disadvantages of TDMA
# '''Guard Intervals''': To prevent interference between adjacent TDMA slots, guard intervals must be added. These intervals, typically ranging from 30 to 50 microseconds, serve as buffers to ensure that transmissions do not overlap. However, this requirement for extra time means that the overall throughput of the system can be reduced, as valuable time is spent in guard intervals rather than transmitting data. This is particularly problematic in cellular networks where time and energy efficiency are paramount.<ref>{{Cite journal |last1=Nguyen |first1=Kien |last2=Golam Kibria |first2=Mirza |last3=Ishizu |first3=Kentaro |last4=Kojima |first4=Fumihide |date=2019-02-14 |title=Performance Evaluation of IEEE 802.11ad in Evolving Wi-Fi Networks |journal=Wireless Communications and Mobile Computing |volume=2019 |pages=1–11 |doi=10.1155/2019/4089365 |doi-access=free |issn=1530-8669}}</ref>
Line 79:
== Dynamic TDMA ==
In '''dynamic time-division multiple access''' ('''dynamic TDMA'''), a [[scheduling algorithm]] dynamically reserves a variable number of time slots in each frame to variable bit-rate data streams, based on the traffic demand of each data stream. Dynamic TDMA is used in
* [[HIPERLAN/2]] broadband radio access network.
* [[IEEE 802.16a]] WiMax
| |||