LTE UE Category and Class Definitions

 

A summary of the different LTE UE category parameters provided by the 3GPP Rel 8 standard is given in the tables below.

 

Category	1	2	3	4	5
Downlink	10	50	100	150	300
Uplink	5	25	50	50	75

LTE UE category data rates

Category	1	2	3	4	5
Downlink	QPSK, 16QAM, 64QAM
Uplink	QPSK, 16QAM				QPSK, 16QAM, 64QAM

LTE UE category modulation formats supported

Category	1	2	3	4	5
2 Rx diversity	Assumed in performance requirements across all LTE UE categories
2 x 2 MIMO	Not supported	Mandatory
4 x 4 MIMO	Not supported				Mandatory

LTE UE category MIMO antenna configurationsNote: Bandwidth for all categories is 20 MHz.

所以如果只是 10MHz 2×2 MIMO, 只有 Downstream 75MBits/s Upstream 20Mbits 左右的速度, 只需要用到 Category 3. 再高也沒有必要

Source:
LTE UE Category and Class Definitions

Update
http://lteuniversity.com/get_trained/expert_opinion1/b/raysulewski/archive/2013/01/16/how-fast-can-my-lte-smartphone-go.aspx