The deadlock between RangeS-S and RangeI-N

Hi Experts , We are getting deadlocks in ranges-s and range1-N lock types, do you have any suggestion to avoid the kay range deadlocks. below given is the deadlock graph,
<deadlock>
<victim-list>
<victimProcess id="process2e93b3708"/>
</victim-list>
<process-list>
   <process id="process2e93b3708" taskpriority="0" logused="2376" waitresource="OBJECT: 7:509960893:17 " waittime="1164" ownerId="1271085938"
transactionname="trans" lasttranstarted="2015-02-04T14:00:38.883" XDES="0x18f71f640" lockMode="X" schedulerid="8" kpid="108668" status="suspended"
   spid="78" sbid="2" ecid="0" priority="0" trancount="2" lastbatchstarted="2015-02-04T14:00:38.883" lastbatchcompleted="2015-02-04T14:00:38.883"
clientapp=".Net SqlClient Data Provider" hostname="RMCPSM03020" hostpid="704" loginname="olmo16556" isolationlevel="serializable (4)" xactid="1271085938"
currentdb="8" lockTimeout="4294967295" clientoption1="671090784" clientoption2="128056">
    <executionStack>
     <frame procname="" line="188" stmtstart="14528" stmtend="18172" sqlhandle="0x0300080037dbf7648e94760033a400000100000000000000">
     </frame>
    </executionStack>
    <inputbuf>
Proc [Database Id = 8 Object Id = 1693965111]    </inputbuf>
   </process>
   <process id="process74664a748" taskpriority="0" logused="4560" waitresource="KEY: 7:72057595643363328 (ffffffffffff)" waittime="1178" ownerId="1271085958"
transactionname="trans" lasttranstarted="2015-02-04T14:00:38.887" XDES="0x5f48f45e0" lockMode="RangeI-N" schedulerid="18" kpid="12532" status="suspended"
   spid="68" sbid="2" ecid="0" priority="0" trancount="2" lastbatchstarted="2015-02-04T14:00:38.887" lastbatchcompleted="2015-02-04T14:00:38.887"
clientapp=".Net SqlClient Data Provider" hostname="RMCPSM03020" hostpid="704" loginname="olmo16556" isolationlevel="serializable (4)" xactid="1271085958"
currentdb="7" lockTimeout="4294967295" clientoption1="673187936" clientoption2="128024">
    <executionStack>
     <frame procname="" line="273" stmtstart="19774" stmtend="27910" sqlhandle="0x030007003517ef742e389e007fa200000100000000000000">
     </frame>
     <frame procname="" line="145" stmtstart="11104" stmtend="11362" sqlhandle="0x0300080037dbf7648e94760033a400000100000000000000">
     </frame>
    </executionStack>
    <inputbuf>
Proc [Database Id = 8 Object Id = 1693965111]    </inputbuf>
   </process>
</process-list>
<resource-list>
   <objectlock lockPartition="17" objid="509960893" subresource="FULL" dbid="7" objectname="" id="lock36a1d2700" mode="IX" associatedObjectId="509960893">
    <owner-list>
     <owner id="process74664a748" mode="IX"/>
    </owner-list>
    <waiter-list>
     <waiter id="process2e93b3708" mode="X" requestType="wait"/>
    </waiter-list>
   </objectlock>
   <keylock hobtid="72057595643363328" dbid="7" objectname="" indexname="" id="lock348222900" mode="RangeS-S" associatedObjectId="72057595643363328">
    <owner-list>
     <owner id="process2e93b3708" mode="RangeS-S"/>
    </owner-list>
    <waiter-list>
     <waiter id="process74664a748" mode="RangeI-N" requestType="wait"/>
    </waiter-list>
   </keylock>
</resource-list>
</deadlock>
Shivraj Patil.

Shivraj, below is an example of using sp_getapplock to serialize access to the stored procedure. I generally recommend this only as a last resort to avoid deadlocks since it will allow only one execution of the proc at a time. Query and index
tuning are a better way to mitigate deadlock likelihood, if possilble. You mention there is no explicit SERIALIZABLE. Does that include the application code?
ALTER PROC dbo.usp_DeadlockProneCode
AS
SET XACT_ABORT ON;
DECLARE @return_code int;
BEGIN TRANSACTION;
EXEC @return_code = sp_getapplock
@Resource = 'dbo.usp_DeadlockProneCode'
, @LockMode = 'Exclusive'
, @LockOwner = 'Transaction';
IF @return_code < 0
BEGIN
RAISERROR('Unexpected return code %d from sp_getapplock', 16, 1, @return_code);
IF @@TRANCOUNT > 0 ROLLBACK;
RETURN @return_code;
END;
--deadlock prone code here
EXEC @return_code = sp_releaseapplock
@Resource = 'dbo.usp_DeadlockProneCode';
COMMIT TRANSACTION;
RETURN @return_code;
GO
Dan Guzman, SQL Server MVP, http://www.dbdelta.com

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