Smartphones - Market share

As per the latest reports published by the comScore Google Android continued to lead among smartphone platforms, accounting for 53.6 percent of smartphone subscribers, while Apple secured 34.3 percent. For the three-month average period ending in October, device manufacturer Samsung ranked as the top OEM with 26.3 percent of U.S. mobile subscribers (up 0.7 percentage points).

Top Mobile OEMs

Share (%) of Mobile Subscribers
Jul-12Oct-12Point Change

Smartphone Platform Market Share
121.3 million people in the U.S. owned smartphones (51.9 percent mobile market penetration) 

Top Smartphone Platforms

Share (%) of Smartphone Subscribers
Jul-12Oct-12Point Change

Mobile Content Usage
In October, the percent of mobile subscribers in USA that used various types of contents are as follows - 
text messaging - 75.9 %(up 0.3 percentage points)
Downloaded applications -  54.5 % (up 1.9 percentage points), 
Browsers - 52.7% (up 1.5 percentage points).
Social networking sites or blogs - 39.4 % (up 1.5 percentage points) 
Game-playing - 34.1 % (up 0.3 percentage points), 
Listened to music on their phones -28.7 % (up 0.4 percentage points)

Tablet market forecast by IDC

International Data Corporation (IDC) has come out with latest quarterly forecasts for tablet market. As per IDC tablet market will increase its 2012 forecast for the worldwide tablet market to 122.3 million, up from its previous forecast of 117.1 million units. IDC also raised its 2013 forecast number to 172.4 million units, up from 165.9 million units. And by 2016 worldwide shipments should reach 282.7 million units, up from a previous forecast of 261.4 million units.

IDC also forecasts a decline in eReader market. IDC now expects 2012 eReader shipments to top out at 19.9 million units, down from the 27.7 million units that shipped in 2011.

As far as tablet operating system splits is concern, IDC now expects Android's worldwide tablet share to increase from 39.8% in 2011 to 42.7% for the full year of 2012. During that same time Apple's share will slip from 56.3% in 2011 to 53.8% in 2012. Long term, IDC predicts Windows-based tablets (including Windows 8 and Windows RT) will grab share from both iOS and Android, growing from 1% of the market in 2011 to 2.9% in 2012, on its way to 10.2% in 2016.

Tablet Operating Systems, Market Share Forecast and CAGR 2012-2016
Tablet OSMarket ShareCAGR 2012 - 2016
Grand Total100.0%100.0%23.3%
Source: IDC Worldwide Quarterly Tablet Tracker, December 5, 2012
Table Notes:
  • Windows shipments include Windows RT, Windows 8, and Windows 7 tablets.
  • Shipments include shipments to distribution channels or end users. OEM sales are counted under the vendor/brand under which they are sold.

Internet Bandwidth consumed in making VoIP calls

This one is bit technical. As many of us have started making voice calls on the IP in our smartphones, I thought many of you would be interested to know how much internet bandwidth is consumed if you make a one minute of Voive call on IP i.e. VoIP call. Caveat - Some of highly technical stuff required cross-authentication from Geeks  (Learnt this from Wiki)

Here you go.....

Number of Bytes Consumed in VOIP

To know exactly how many bytes a voice conversation consumes, one needs to know which codec her VoIP service is using. 

A codec is a compression engine that transforms your (analog) voice into digital data, removing the silent moments (which make up to half of all conversations), and do other things to render the data load as light as possible. A codec is an algorithm (sort of a computer program), most of the time installed as a software on a server or embedded within a piece of hardware (IP Phones), that is used to convert voice (in the case of VoIP) signals into digital data to be transmitted over the Internet or any network during a VoIP call.
The word codec comes from the composed words coder-decoder or compressor-decompressor. Codecs normally achieve the following three tasks :
  • Encoding – decoding
  • Compression – decompression
  • Encryption - Decryption

Encoding - decoding

Codec digitizes your analog voice to digital. When you talk over normal landline phone, your voice is transported in an analog way. But with VoIP, your voice is converted into digital signals. This conversion is technically called encoding, and is achieved by a codec. At destination, digitized voice is to be decoded back to its original analog state so that the other person can hear and understand it.

Compression – decompression

Bandwidth is a scarce commodity. To make the digitized voice less bulky, it is compressed. By compression, the same data is stored but using lesser space (digital bits). Once it reaches its destination, it is decompressed back to it original state before being decoded. 
Encryption – decryption
Encryption is one of the best tools for achieving security. It is the process of changing data into such a state that it no one can understand. This way, even if the encrypted data is intercepted by unauthorized people, the data still remains confidential. Once the encrypted data reaches destination, it is decrypted back to its original form. Often, when data is compressed, it already is encrypted to a certain extent, since it is altered from its original state.

Common VoIP Codecs

G.71164Delivers precise speech transmission. low processor requirements. Needs at least 128 kbps for two-way.
G.72248/56/64Adapts to varying compressions 
G.723.15.3/6.3High compression with high quality audio.  Lot of processor power.
G.72616/24/32/40An improved version of G.721 and G.723 (different from G.723.1)
G.7298Excellent bandwidth utilization. Error tolerant. License required.
GSM13High compression ratio. Free and available in many hardware and software platforms. 
iLBC15Robust to packet loss. Free
Speex2.15 / 44Minimizes bandwidth usage by using variable bit rate.
The approximate values for data consumption of the most common codecs used for VoIP are as follows:
Codec      BR                     NEB
G.711      64 Kbps      87.2 Kbps
G.729      8 Kbps        31.2 Kbps
G.723.1   6.4 Kbps      21.9 Kbps
G.723.1   5.3 Kbps      20.8 Kbps
G.726      32 Kbps      55.2 Kbps
G.726      24 Kbps      47.2 Kbps
G.728      16 Kbps      31.5 Kbps
iLBC         15 Kbps      27.7 Kbps

BR = Bit rate
NEB = Nominal Ethernet Bandwidth (one direction)

Note  - The G.729 codec is one of the best performing voice codecs and most good VoIP services use it.

Calculation of Bandwidth required
Example - for one minute of talk with the G.729 codec.

Now G.729 uses 8kpbs of sampling. Normally one packet of 20 Bytes is sent. With a sampling rate of 8kpbs this means that in one sec, 50 packets are to be sent.
If we are using frame relay protocol over ethernet, the overheads to be used are as follows - 
Frame relay - 6 Bytes(incl header and trailer)
RTP - 40 bytes (breakup 20 bytes of IP, RTP-12 & UDP - 8) [Note if cRTP is used these 40 Bytes can be converted into 4 Bytes]
Ethernet - 18 bytes
Therefore, for each packet of 20 bytes in this case 64 Bytes of protocol and other header bytes are added. Therefore total 84 Bytes will be send. Overall 50 such packets are semt per sec, therefore bit rate is 50*84*8= 33.6 kbps (Mentioned as ~32 kpbs)
This translates into 1920 kilobits (60 x 32) in one minute, which in turn is 240 kilobytes (KB) per minute (1 byte is 8 bits). Now that’s only for the data going out. Inbound data (which also counts) takes the same load, so one can double the figure to 480 KB. This gives a round value to 0.5 MB per minute of conversation.

However, there are many parameters, that are rather technical in nature, affecting the values above. Among them are the compression technology, the size (payload) of the voice packets, the intervals at which they are sent, packet overhead, network protocol used and whether silence suppression is used. (Pl refer table below). If silence suppression/voice activity detection is used, the bandwidth consumption may drop 50%

Packet voice transmission requirements
(Bits per second per voice channel)
CodecVoice bit rateSample timeVoice payloadPackets per secondEthernet
PPP or Frame Relay
G.71164 Kbps20 msec160 bytes5087.2 Kbps82.4 Kbps68.0 Kbps
G.71164 Kbps30 msec240 bytes33.379.4 Kbps76.2 Kbps66.6 Kbps
G.71164 Kbps40 msec320 bytes2575.6 Kbps73.2 Kbps66.0 Kbps
G.729A8 Kbps20 msec20 bytes5031.2 Kbps26.4 Kbps12.0 Kbps
G.729A8 Kbps30 msec30 bytes33.323.4 Kbps20.2 Kbps10.7 Kbps
G.729A8 Kbps40 msec40 bytes2519.6 Kbps17.2 Kbps10.0 Kbps
Note: RTP assumes 40-octets RTP/UDP/IP overhead per packet
Compressed RTP (cRTP) assumes 4-octets RTP/UDP/IP overhead per packet
Ethernet overhead adds 18-octets per packet
PPP/Frame Relay overhead adds 6-octets per packet
If we take the value of 50 kbps for any codec, it will give (after calculations and approximations) 0.75 MB per minute of conversation.

Search your favourite topic

3G (23) 4G (10) africa broadband (2) African Telecom (3) Aircell (4) airtel (20) Android (4) Apple (6) Asia Pacific Telecom market (8) bharti (7) broadband (39) Broadcasting (1) BSNL (10) CDMA (10) china mobile (37) China Telecom Market (13) cross media ownership (1) digital divide (3) DoCoMo (3) DoT (3) DTH (1) EDGE (2) Enterprise Telecom Business (5) ericsson (4) etisalat (1) European Telecom market (9) EVDO (1) FCC (2) fixed line market (1) fixed mobile convergence (2) forecasts for mobile market (5) GTL (1) HSPA (7) Huawei (2) idea (10) India 3G (47) India CDMA (50) India GSM (60) India Mobile (48) infrastructure sharing (6) International Long Distance (3) Internet service providers (3) Intra Circle Roaming (1) Ipad (1) IPTV (5) ITU (1) largetst telecom operator (6) latest telecom news (54) LG (2) LTE (10) M-commerce (4) Managed networks (2) Maxis (3) Middle Eastern telecom market (6) MIMO (1) mobile (21) mobile advertising (2) Mobile banking (5) mobile handsets (14) Motorola (3) MTNL (3) MVNO (2) Next Generation Networks (1) nokia (7) Nokia Siemens (1) number portability (6) OFDMA (1) QUALCOMM (1) Reliance Communications (16) RIM (2) Rural broadband (1) rural mobile infrastructure (9) Russia (1) Samsung (4) satellite communications (1) Smart Pad (1) Smartphone (3) Sony Ericsson (2) South East Asian Market (3) Spectrum (9) Spice (1) strategy for mobile operators (63) Symbian (1) Tablet (3) Tariff (1) Tata Communications (2) Tata Teleservices (5) TD-SCDMA (2) Telcordia (1) Tele-density (4) telecom equipment (22) Telecom growth projections (13) Telecom Market India (57) telecom market share (17) telecom operator strategy (40) telecom policy (32) Telecom regulation (7) telecom sector india (31) TRAI (13) Unique Identification Authority of India (1) US Telecom market (11) USO fund (4) VAS (2) verizon (6) Virgin (1) Vodafone (1) vodafone india (11) VoIP (5) VSNL (2) WAN (1) WCDMA (4) WiBro (1) WiFI (13) WiMAX (20) wireless broadband (43) wireless US (12) WMAN (1) Yota (1) Zain (1) ZTE (2)